Working circuit based on load modulation, chip and atomization device

Abstract

The invention discloses a working circuit based on load modulation, a chip and an atomization device. The working circuit comprises a modulation circuit, an energy control module and a first controller. The signal input port in the working circuit is used for being connected with a load element outside the working circuit in parallel; the modulation circuit is connected with the energy control module; the first controller is respectively connected with the modulation circuit and the energy control module; the first controller is used for driving the current in the load element to change by controlling a modulation circuit so as to carry out modulation; and the energy control module is used for charging a capacitor externally connected with the working circuit by using an input signal of the working circuit and gating the capacitor externally connected with the working circuit to supply power to the modulation circuit.

Description

Technical Field

[0001] This application relates to the technical field of load circuits, specifically to load modulation-based operating circuits, chips, and atomizing devices. Background Technology

[0002] In existing technologies, the power supply and load components of atomizing devices are connected using a two-wire connection. The atomizing device uses a power supply terminal and a ground terminal connected to a heating wire installed in the load component. The heating wire has a resistance of approximately 1 ohm, which is sufficient to heat and atomize the liquid.

[0003] Chinese invention patent application number CN202222357787.X discloses an atomizing device for an atomizing apparatus. The proposed solution is to control the switching on and off of a switch according to a certain timing to modulate the data to be transmitted, thereby realizing communication between two chips in the atomizing device. The communication process is not affected by the large current generated during atomization, and there is no need to turn off the atomization function during communication. However, it does not consider the charging requirements. During the modulation and communication process, the power is easily consumed and cannot be replenished in time, making it difficult to guarantee the data communication between the two parties. Summary of the Invention

[0004] This application discloses a working circuit, chip, and atomizing device based on load modulation, and the specific technical solution is as follows: The load modulation-based operating circuit includes a modulation circuit, an energy control module, and a first controller. The input signal port of the operating circuit is used to connect load elements external to the operating circuit in parallel. The modulation circuit is connected to the energy control module. The first controller is connected to both the modulation circuit and the energy control module. The first controller is used to control the current change in the load element by controlling the modulation circuit to perform modulation. The energy control module is used to charge the capacitor connected external to the operating circuit using the input signal of the operating circuit, and to select the capacitor connected external to the operating circuit to supply power to the modulation circuit. In summary, the operating circuit disclosed in this application provides stable power supply to the parallel-connected load elements and uses the modulation circuit for modulation to maintain normal data communication when the load elements are working. Furthermore, it uses an external capacitor for energy storage and power replenishment, enhancing the expandability and functional reusability of the peripheral components of the operating circuit. This solves the power consumption and charging problems that occur during modulation communication, ensuring stable data communication, and also achieving information interaction and charging through parallel load connection to simplify circuit manufacturing costs.

[0005] A chip with the aforementioned working circuit internally is disclosed. The chip may not integrate the rectifier bridge circuit; however, integrating the rectifier bridge circuit would allow for identification of positive and negative signals generated by external devices connected to the first and second input terminals in either direction. Regardless of whether the rectifier bridge circuit is integrated, the chip can provide stable power to parallel-connected load components. The chip utilizes a modulation circuit for modulation to maintain normal data communication while the load components are operating. Furthermore, the chip uses external capacitors for energy storage and power replenishment, enhancing the expandability and functional reusability of peripheral components. This solves the problem of increased peripheral component count due to data modulation and demodulation, reducing chip manufacturing costs and consequently lowering the manufacturing cost of products assembled with the chip.

[0006] An atomizing device includes a first circuit and a second circuit. The first circuit includes the chip or the working circuit. The first circuit also includes a load element and a capacitor. The second circuit includes a second controller, a power supply, a first switch, and a second switch. The working circuit has a first input terminal, a second input terminal, a power supply terminal, and a ground terminal. The capacitor is connected in parallel to the power supply terminal and the ground terminal. The two ends of the load element are connected in parallel to the first input terminal and the second input terminal. The power supply is connected to the first input terminal through the first switch and the second switch. The second controller is connected to the second input terminal to provide a data path for communication between the second controller and the first circuit. The second controller is used to control the power supply to charge the first circuit by turning on the first switch and / or the second switch before communicating with the first circuit. The second controller is used to detect whether a synchronous reset signal sent by the first circuit is received when the power supply is charging the first circuit. When the synchronous reset signal sent by the first circuit is detected, the second switch is kept on and communication with the first circuit begins. While the second controller is communicating with the first circuit, the capacitor continues to supply power to the working circuit. In summary, the atomizing device disclosed in this application uses the switching of two switching transistors to switch between charging the first circuit and communicating with the first circuit, ensuring the heating of the parallel-connected load components and the modulation and interaction of external communication signals. Combined with the working circuit included in the first circuit, which is the basic circuit for identifying input signals generated by the positive and negative connections of external devices or for directly modulating input signals, it is possible to ensure normal data communication when the load components are working through a simplified circuit design, reducing the wires and pins for the interaction between the master circuit and the slave circuit. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the working circuit of one embodiment of the present application (without a rectifier bridge circuit).

[0008] Figure 2The schematic diagram of the working circuit (with built-in rectifier bridge circuit) is disclosed for another embodiment of this application.

[0009] Figure 3 This application discloses a schematic diagram showing the connection between the first circuit and the second circuit inside an atomizing device according to one embodiment. The chip in the first circuit can be replaced with... Figure 1 In the chip, the connection method between the first input terminal IN1 and the second input terminal IN2 and the second circuit remains unchanged. Detailed Implementation

[0010] The specific embodiments of this application will be further described below with reference to the accompanying drawings. In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. The term "and / or" as used herein includes any and all combinations of one or more of the related listed items.

[0011] To address the power consumption and charging issues that arise during modulated communication operations, and the resulting communication stability problems, this application discloses a load-modulated operating circuit. This circuit operates with a load connected in parallel to its input terminal, maintaining normal data communication and power supply functions. Therefore, an external capacitor can be used to form a multiplexed circuit that combines charging and energy storage with normal power supply for modulated communication operations. (See reference...) Figure 1 As can be seen, the operating circuit disclosed in this application includes a modulation circuit, an energy control module, and a first controller MCU1. The input signal port in the operating circuit is used to connect load components external to the operating circuit in parallel; the modulation circuit is connected to the energy control module; the first controller is connected to both the modulation circuit and the energy control module; the modulation circuit modulates the signal by changing the magnitude of the current flowing through it using its built-in switching unit; the energy control module has a built-in switching network to turn the power supply on or off, and can also boost the input signal by setting up a charge pump or other boost circuit; both the modulation circuit and the energy control module are controlled by control signals issued by the first controller. It can be understood that the signal input to the operating circuit is directly adjusted by the energy control module to a signal that can maintain the normal operation of the modulation circuit, including normal power supply and normal signal modulation and demodulation.

[0012] The first controller is used to control the modulation circuit to drive the current change in the load element. This includes turning the modulation circuit on or off for a period of time by relying on the switching mechanism in the modulation circuit to change the current in the path connected to the input signal port in the working circuit, causing the current change to be fed back to the current limiting resistor in the modulation circuit to obtain a pulse signal of corresponding duration. Since the input signal port in the working circuit is connected in parallel to the load element outside the working circuit, it drives the current change in the load element to perform modulation. That is, the first controller controls the modulation circuit to perform load modulation, which is equivalent to data encoding by load modulation. It can also be understood as adjusting the voltage of the load by timing to obtain the high and low levels of the corresponding level width (the timed level duration), thereby modulating the encoded level signal to realize data interaction using encoded information.

[0013] The load modulation method relies on the switching mechanism in the modulation circuit to cause the internal resistor to consume more current and cut off the path, thereby modulating the signal. The operating current and voltage status of the load element are fed back externally. This application supports parallel connection of loads, combined with the load modulation circuit, to reduce circuit cost.

[0014] The signals input from outside the working circuit can contribute to the modulation circuit and also partially or completely affect the aforementioned parallel-connected load elements; in addition, the energy control module can maintain normal power supply operation, ensuring the power supply operation of the working circuit and its external data communication function. This simplifies the circuit design and reduces the amount of wiring and pins required for data interaction.

[0015] The energy control module is used to charge an external capacitor connected to the working circuit using the input signal of the working circuit, and to select the external capacitor to supply power to the modulation circuit. Specifically, the energy control module can either increase the voltage of the input signal of the working circuit or directly transmit it to the capacitor. After the capacitor is charged to a certain level, its charge is sufficient to support the normal operation of the working circuit, including driving the modulation circuit to perform modulation and ensuring the power supply to the first controller. Therefore, the energy control module integrates a switching network, specifically for the capacitor, or uses a charge pump to adjust the voltage and replenish the capacitor's charge in a timely manner, thus meeting both the charging needs of the capacitor and the power supply voltage requirements of the modulation circuit and the first controller.

[0016] The external capacitor of the working circuit serves as an energy storage capacitor. After the energy storage capacitor is fully charged, it will supply power to the first controller and the modulation circuit respectively. The data communication and power supply of the working circuit can be powered separately, or the data communication and power supply can share the same capacitor. Power supply can be achieved not only by connecting a pull-up resistor in series, but also by maintaining the power supply of the first controller through the capacitor. The first controller is powered by the capacitor when transmitting data.

[0017] In summary, the working circuit disclosed in this application provides stable power supply to the parallel-connected load elements and uses a modulation circuit for modulation to maintain normal data communication when the load elements are working. Moreover, it uses an external capacitor for power storage and power replenishment, enhancing the expandability and functional reusability of the peripheral components of the working circuit. Thus, it solves the power consumption and charging problems that occur during modulation communication based on the prior art, ensures stable data communication, and also realizes the use of parallel loads to take into account both information interaction and charging, thereby simplifying circuit manufacturing costs.

[0018] Based on the above embodiments, the modulation circuit includes a current-limiting resistor and a switching unit. The input signal ports in the working circuit include a first input terminal and a second input terminal, schematically, as shown below. Figure 1 As shown, the working circuit has a first input terminal IN1 and a second input terminal IN2. The working circuit has a power supply terminal and a ground terminal, wherein the external capacitor connected to the working circuit is a capacitor connected in parallel to the power supply terminal and the ground terminal. The working circuit has a power supply terminal and a ground terminal, and the energy control module is used to connect to the power supply terminal, schematically as shown... Figure 1 As shown, the working circuit has a power supply terminal VCC and a ground terminal GND. The external capacitor C of the working circuit is connected in parallel to the power supply terminal VCC and the ground terminal GND to store the supplied power. Since the energy control module is connected to the power supply terminal VCC, the energy control module adjusts the output power to maintain the power in the capacitor, so that the power stored in the external capacitor of the working circuit continuously supplies power to the working circuit.

[0019] The first input terminal is connected to one end of the switching unit, one end of the switching unit is connected to the energy control module, the other end of the switching unit is connected to one end of the current-limiting resistor, the other end of the current-limiting resistor is connected to the ground terminal, and the second input terminal is connected to the other end of the current-limiting resistor, so that the change in the current input to the first and second input terminals is fed back to the current-limiting resistor. (Illustratively, as shown...) Figure 1 As shown, the switching unit is a switching element SW-S controlled by the first controller MCU1. One end of the switching element SW-S is connected in series with the current limiting resistor Rs. The series-connected switching element SW-S and the current limiting resistor Rs are considered to be connected in parallel to the first input terminal IN1 and the second input terminal IN2, thereby triggering the first controller to demodulate according to the current change in the current limiting resistor.

[0020] In this embodiment, the modulation circuit is used to, when the switching unit changes from off to on, cause current to flow in the current-limiting resistor, sample the voltage in the current-limiting resistor, and drive a change in the current in the load element. This change is fed back to the first and second input terminals for modulation, and the modulation result can be transmitted to the communication chip connected to the first and second input terminals. The modulation circuit is also used to, when the switching unit changes from on to off, cause no current to flow in the current-limiting resistor, but current still flows in the load element, driving a change in the current in the load element. This change is fed back to the first and second input terminals for modulation. Furthermore, based on the signals from the first and second input terminals, the first controller can combine a low level of a first preset duration and a high level of a second preset duration into a data bit 1 or a data bit 0, implementing bit-level data encoding to achieve modulation.

[0021] Indicatively, such as Figure 1 As shown, when the switching element SW-S is turned on, the current-limiting resistor Rs converts the voltage value generated by the consumed current into the corresponding data bit to help complete the data modulation. The modulation circuit is turned on and off by a certain timing control switch, which causes the current in the modulation circuit to change, thereby modulating the data to be transmitted between large and small currents, reducing the problem of excessive energy consumption caused by large current modulation and the susceptibility of the signal to interference.

[0022] Therefore, the first controller MCU1 uses a switching unit to make the current in the current-limiting resistor Rs constantly change between a large current and a small current, thereby modulating the data. Here, the large current or small current is a relative concept, and there is no specific dividing line between them. For example, when the large current is 3A, the small current is 100mA.

[0023] Other controllers that communicate with the first controller can demodulate and recover the data by recording the changes in the current flowing through the current-limiting resistor, thus achieving the purpose of communication.

[0024] The modulation circuit relies on a single switch and a single resistor to achieve data modulation. The circuit structure is simple, which is conducive to the miniaturization of the terminal where the working circuit is located, and also reduces costs.

[0025] When the operating circuit needs to transmit data to an external controller, it modulates the data by switching the switching unit on and off, achieving data encoding. Then, the control module receiving the data demodulates the data using the current change in a connected resistor, thus enabling communication between the two controllers. The first controller here can be a chip.

[0026] It should be noted that when the working circuit is operating normally, the switching unit is turned on, enhancing the current output capability to provide the rated operating current to the heating wire or other load components. The working circuit relies on current changes to achieve data modulation communication; during communication, there is no need to interrupt power supply to the load components, thus improving the user experience of the heating atomizing device equipped with this working circuit.

[0027] As one embodiment, the energy control module integrates a charge pump; the signal input terminal of the charge pump is the signal input terminal of the energy control module; the signal output terminal of the charge pump is the signal output terminal of the energy control module. The signal input terminal of the charge pump is connected to one end of the switching unit, and the signal output terminal of the charge pump is connected to the power supply terminal.

[0028] A charge pump is used to boost the input signal at the first input terminal and then output the boosted result to a capacitor connected to the external working circuit, or to output the input signal at the first input terminal to a capacitor connected to the external working circuit without adjusting the input signal at the first input terminal, thereby charging the capacitor connected to the external working circuit. Schematic, the charge pump is used to boost the voltage at its signal input terminal. For example, by boosting the voltage obtained at the first input terminal IN1 to 3V, the capacitor can be charged to obtain a charging voltage of 3V. At this time, there is a path between the modulation circuit and the capacitor, and the charging voltage of the capacitor can drive the modulation circuit to work normally.

[0029] Alternatively, the charge pump is used to output the signal to an external capacitor of the working circuit without adjusting the input signal at the first input terminal, thereby charging the external capacitor of the working circuit; wherein the external capacitor of the working circuit is a capacitor connected in parallel to the power supply terminal and the ground terminal to store the power supplied.

[0030] The charge pump is also used to select the circuit path between the capacitor connected to the working circuit and the modulation circuit, so that when the capacitor connected to the working circuit is charged to a preset voltage, it maintains the preset voltage to supply power to the modulation circuit; therefore, the charge pump can be used to switch between supplying power to and de-energizing the capacitor connected to the working circuit, thereby driving the current change in the modulation circuit and the load element.

[0031] In one embodiment, the energy control module integrates a switching network. The signal input terminal of the switching network is connected to one end of the switching unit, and the signal output terminal of the switching network is connected to the power supply terminal to select the circuit path between the modulation circuit and the capacitor connected to the working circuit. The switching network is used to switch between powering on and off the capacitor connected to the working circuit, thereby causing a change in the current in the modulation circuit to charge the capacitor connected to the working circuit. That is, the signal input at the first input terminal is directly output to the capacitor without being adjusted by the energy control module, so that when the capacitor connected to the working circuit is charged to a preset voltage, it maintains the preset voltage to power the modulation circuit. The signal input terminal of the switching network is the signal input terminal of the energy control module, and the signal output terminal of the switching network is the signal output terminal of the energy control module.

[0032] Therefore, the energy control module in this embodiment is equivalent to a power switch, used to select the circuit path between the modulation circuit and the capacitor connected to the working circuit, so that when the capacitor connected to the working circuit is charged to a preset voltage, it maintains the preset voltage to supply power to the modulation circuit; the preset voltage is preferably between 3 and 5V.

[0033] In summary, it can be understood that: in communication mode, the first controller starts a charge pump to boost the voltage and store it in a capacitor (equivalent to a charging capacitor) to obtain the operating voltage required for the modulation circuit to perform data modulation; in charging mode, the first controller does not start a charge pump but directly selects the path between the capacitor and the modulation circuit, and does not even need to set up a dedicated boost circuit, directly storing the power supply in the capacitor; thereby realizing the functional reuse of the energy control module.

[0034] As another embodiment, see Figure 2 As can be seen, the working circuit disclosed in this application includes a rectifier bridge circuit, a modulation circuit, an energy control module, and a first controller. The first controller is connected to the rectifier bridge circuit, the modulation circuit, and the energy control module. The rectifier bridge circuit is a circuit with upper and lower half-bridge arms connected by switching transistors. The modulation circuit relies on its built-in switching unit to change the magnitude of the current flowing through it to achieve signal modulation. The energy control module has a built-in switching network to conduct or cut off the power supply, and can also boost the input signal by setting up a boost circuit such as a charge pump. The rectifier bridge circuit, the modulation circuit, and the energy control module are all controlled by the control signal issued by the first controller.

[0035] In this application, the rectifier bridge circuit is connected to the modulation circuit and the energy control module, thereby connecting the modulation circuit and the energy control module. It can be understood that after the signal input to the working circuit is rectified by the rectifier bridge circuit, it is adjusted by the energy control module to maintain the normal operation of the modulation circuit, including normal power supply and normal signal modulation and demodulation.

[0036] The rectifier bridge circuit is used to rectify the input signal and output the rectified result. The rectifier bridge circuit has an internal rectifier bridge to realize the foolproof function, that is, the input signal does not need to be distinguished by positive and negative polarity in advance. This means that the first controller can recognize the external device regardless of whether it is plugged into the working circuit in the right or wrong direction. So, whether the input signal is a positive data signal, a negative data signal, a positive power signal or a negative power signal, after being rectified by the rectifier bridge circuit, the output rectified result can be processed by the modulation circuit and the energy control module, and the first controller can detect the positive and negative of the input signal.

[0037] The input signal port in the rectifier bridge circuit is used to connect load components outside the working circuit in parallel. Therefore, when the rectifier bridge circuit of this application performs switching through the switching transistor, such as switching from the charging state to the data communication state, it does not affect the operation of the load components, and also solves the problem of reverse polarity.

[0038] The first controller is used to induce current changes in the rectifier bridge circuit by controlling the modulation circuit. This includes turning the modulation circuit on or off for a period of time using a switching mechanism to change the current in the path connected to the rectifier bridge circuit, causing current changes in the rectifier bridge circuit. These changes are then fed back to the current-limiting resistor in the modulation circuit to obtain a pulse signal of corresponding duration. Since the input signal port of the rectifier bridge circuit is connected in parallel to the load element outside the working circuit, the current change in the rectifier bridge circuit drives the current change in the load element for modulation. In other words, the first controller controls the modulation circuit to perform load modulation, which is equivalent to data encoding through load modulation. It can also be understood as adjusting the voltage of the load to obtain a high level and a low level with corresponding voltage width (timed voltage duration), thereby modulating an encoded level signal to achieve data interaction using encoded information.

[0039] Based on the connection between the modulation circuit and the rectifier bridge circuit, and the parallel connection of the load element to the rectifier bridge circuit, the rectification result of the external input signal to the rectifier bridge circuit can contribute to the modulation circuit, and the external input signal to the rectifier bridge circuit also partially or completely acts on the aforementioned parallel-connected load element. Furthermore, the energy control module can maintain normal power supply operation, ensuring the power supply operation of the working circuit and its external data communication function. This simplifies the circuit design and reduces the amount of wiring and pins required for data interaction.

[0040] The load modulation method relies on the switching mechanism in the modulation circuit to cause the internal resistor to consume more current and cut off the path, thereby modulating the signal. The operating current and voltage status of the load element are fed back externally. This application supports parallel connection of loads, combined with the rectifier bridge circuit for load modulation, reducing circuit cost.

[0041] The energy control module is used to charge the external capacitor of the working circuit through the rectification result, and to select the external capacitor of the working circuit to supply power to the modulation circuit. By boosting the voltage of the rectified result or directly transmitting it to the capacitor, the capacitor is charged to a certain level, which is sufficient to support the normal operation of the working circuit, including driving the modulation circuit to perform modulation and ensuring the power supply to the first controller. Therefore, the energy control module integrates a switching network, which is a switching network for the capacitor, or sets up a charge pump to adjust the voltage and replenish the capacitor's charge in a timely manner, which can meet both the charging needs of the capacitor and the power supply voltage needs of the modulation circuit and the first controller.

[0042] The external capacitor of the working circuit serves as an energy storage capacitor. After the energy storage capacitor is fully charged, it will supply power to the first controller and the modulation circuit respectively. The data communication and power supply of the working circuit can be powered separately, or the data communication and power supply can share the same capacitor. Power supply can be achieved not only by connecting a pull-up resistor in series, but also by maintaining the power supply of the first controller through the capacitor. The first controller is powered by the capacitor when transmitting data.

[0043] In summary, the working circuit disclosed in this application can identify input signals generated by the reverse connection of external devices, provide stable power supply to parallel connected load elements, and use modulation circuits to modulate data to maintain normal data communication when the load elements are working. Moreover, it uses external capacitors for energy storage and power replenishment, enhancing the expandability and functional reusability of peripheral components in the working circuit. This solves the problem of increasing the number of peripheral components based on existing technologies, and realizes the use of parallel loads to balance information interaction and charging, thereby simplifying circuit manufacturing costs and significantly reducing product manufacturing costs.

[0044] As one embodiment, the modulation circuit includes a current-limiting resistor and a switching unit. The rectifier bridge circuit has a first rectified output terminal and a second rectified output terminal. One end of the switching unit is connected to the first rectified output terminal, and the other end of the switching unit is connected to one end of the current-limiting resistor. The other end of the current-limiting resistor is connected to the second rectified output terminal. The first and second rectified output terminals are used to output the rectification result. The rectifier bridge circuit also has a first input terminal and a second input terminal. Positive or negative signals input to the first and second input terminals are rectified and output by the first and second rectified output terminals, so that the change in current in the rectifier bridge circuit is fed back to the current-limiting resistor. Schematic, as shown... Figure 2 As shown, the switching unit is a switching element SW-S controlled by the first controller MCU1. One end of the switching element SW-S is connected in series with the current limiting resistor Rs. The series-connected switching element SW-S and the current limiting resistor Rs are considered to be connected in parallel to the first rectifier output terminal of the rectifier bridge circuit; thereby triggering the first controller to demodulate according to the current change in the current limiting resistor.

[0045] In this embodiment, the modulation circuit is used to, when the switching unit changes from off to on, cause current to flow in the current-limiting resistor. The current-limiting resistor samples the voltage, causing a change in the current in the rectifier bridge circuit, which in turn causes a change in the current in the load element. This change is fed back to the first and second input terminals for modulation. The modulation result can be transmitted to the communication chip connected to the first and second input terminals. The modulation circuit is also used to, when the switching unit changes from on to off, cause no current to flow in the current-limiting resistor, but current still exists in the rectifier bridge circuit and the load element. This causes a change in the current in the rectifier bridge circuit, which in turn causes a change in the current in the load element. This change is fed back to the first and second input terminals for modulation. Furthermore, based on the signals from the first and second input terminals, the first controller can combine a low level of a first preset duration and a high level of a second preset duration into a data bit 1 or a data bit 0, implementing bit-level data encoding to achieve modulation.

[0046] Indicatively, such as Figure 2 As shown, when the switching element SW-S is turned on, the current-limiting resistor Rs converts the voltage value generated by the consumed current into the corresponding data bit to help complete the data modulation. The modulation circuit is turned on and off by a certain timing control switch, which causes the current in the modulation circuit to change, thereby modulating the data to be transmitted between large and small currents, reducing the problem of excessive energy consumption caused by large current modulation and the susceptibility of the signal to interference.

[0047] Therefore, the first controller MCU1 uses a switching unit to make the current in the current-limiting resistor Rs constantly change between a large current and a small current, thereby modulating the data. Here, the large current or small current is a relative concept, and there is no specific dividing line between them. For example, when the large current is 3A, the small current is 100mA.

[0048] Based on the above embodiments, the working circuit is provided with a power supply terminal and a ground terminal, and the energy control module is used to connect to the power supply terminal, schematically, as shown below. Figure 2 As shown, the working circuit has a power supply terminal VCC and a ground terminal GND. The drain of the second lower switching transistor MP2 and the drain of the first lower switching transistor MP1 are connected to the ground terminal GND. The energy control module is connected to the power supply terminal VCC. Figure 3 In this circuit, the external capacitor C is connected in parallel to the power supply terminal VCC and the ground terminal GND to store the supplied power. Since the common connection between the drain terminals of the second MOSFET MP2 and the first MOSFET MP1 is connected to the ground terminal GND, and the energy control module is connected to the power supply terminal VCC, the power output from the rectifier bridge circuit is stored in the capacitor, ensuring that the power stored in the external capacitor continuously supplies power to the circuit.

[0049] As one embodiment, the energy control module integrates a charge pump; the signal input terminal of the charge pump is the signal input terminal of the energy control module; the signal output terminal of the charge pump is the signal output terminal of the energy control module. The signal input terminal of the charge pump is connected to the first rectified output terminal of the rectifier bridge circuit, and the signal output terminal of the charge pump is connected to the power supply terminal; the charge pump is used to boost the rectification result and then output the boosted result to the capacitor connected externally to the working circuit, wherein the boosted result of the charge pump is held in the capacitor. Schematic, the charge pump is used to boost the voltage of its signal input terminal (the aforementioned first rectified output terminal), for example, by boosting the voltage obtained after rectification to 3V through the charge pump, the capacitor can be charged to obtain a charging voltage of 3V. At this time, there is a path between the modulation circuit and the capacitor, and the charging voltage of the capacitor can drive the modulation circuit to work normally.

[0050] Alternatively, the charge pump is used to output the rectification result to an external capacitor of the working circuit without adjusting the rectification result, that is, to directly output the rectification result to an external capacitor of the working circuit to charge the external capacitor of the working circuit; wherein, the external capacitor of the working circuit is a capacitor connected in parallel to the power supply terminal and the ground terminal to store the power supplied through the capacitor.

[0051] It is understood that the charge pump is also used to select the circuit path between the capacitor connected to the working circuit and the modulation circuit, so that when the capacitor connected to the working circuit is charged to a preset voltage, it maintains the preset voltage to supply power to the modulation circuit; therefore, the charge pump can be used to switch between supplying power to the capacitor connected to the working circuit and de-energizing it, thereby driving the current change in the modulation circuit and the rectifier bridge circuit.

[0052] In one embodiment, the energy control module integrates a switching network. The signal input terminal of the switching network is connected to the first rectified output terminal of the rectifier bridge circuit, and the signal output terminal of the switching network is connected to the power supply terminal to select the circuit path between the modulation circuit, the rectifier bridge circuit, and the capacitor connected to the working circuit. The switching network is used to switch between powering on and off the capacitor connected to the working circuit, causing changes in the current in the modulation circuit and the rectifier bridge circuit, so that the rectification result charges the capacitor connected to the working circuit. That is, the rectification result is directly output to the capacitor without adjustment by the energy control module, so that when the capacitor connected to the working circuit is charged to a preset voltage, it maintains the preset voltage to power the modulation circuit. The signal input terminal of the switching network is the signal input terminal of the energy control module, and the signal output terminal of the switching network is the signal output terminal of the energy control module.

[0053] Therefore, the energy control module in this embodiment is equivalent to a power switch, used to select the circuit path between the modulation circuit and the capacitor connected to the working circuit, so that when the capacitor connected to the working circuit is charged to a preset voltage, it maintains the preset voltage to supply power to the modulation circuit; the preset voltage is preferably between 3 and 5V.

[0054] In summary, by connecting a capacitor between the rectifier bridge circuit and the energy control module, the data modulation communication and circuit module charging are not affected by the positive or negative input voltage. In communication mode, the first controller starts a charge pump to boost the voltage and store it in the capacitor (equivalent to a charging capacitor) to obtain the operating voltage required for the modulation circuit to perform data modulation. In charging mode, the first controller does not start the charge pump but directly selects the path between the capacitor and the rectifier bridge circuit and the modulation circuit, and does not even need to set up a dedicated boost circuit, directly storing the supplied power in the capacitor. Thus, the function of the energy control module is reused.

[0055] As one embodiment, the rectifier bridge circuit includes a first upper switch, a second upper switch, a first lower switch, and a second lower switch; the first transmission terminal of the first upper switch and the first transmission terminal of the second upper switch are both connected to the energy control module; the control terminal of the first upper switch is connected to the control terminal of the first lower switch, and the second transmission terminal of the second upper switch is connected to the second transmission terminal of the first lower switch; the control terminal of the second upper switch is connected to the control terminal of the second lower switch, and the second transmission terminal of the second upper switch is connected to the second transmission terminal of the second lower switch; the control terminal of the first lower switch is connected to the second transmission terminal of the second lower switch; the control terminal of the second lower switch is connected to the second transmission terminal of the first lower switch; and the first transmission terminal of the second lower switch is connected to the first transmission terminal of the first lower switch. The first transmission terminals of the first upper switch and the second upper switch are both connected to the first rectifier output terminal, and the first transmission terminals of the second lower switch and the first lower switch are both connected to the second rectifier output terminal. The first transmission terminals of the second lower switch and the first lower switch are connected to the ground terminal. Schematic, as shown... Figure 2 As shown, the common connection between the drain of the first upper MOSFET MN1 and the drain of the second upper MOSFET MN2 is the first rectified output terminal, and the common connection between the drain of the second lower MOSFET MP2 and the drain of the first lower MOSFET MP1 is the second rectified output terminal.

[0056] In this embodiment, the first upper switch and the first lower switch are connected sequentially to form one bridge arm, and either the first upper switch or the first lower switch is considered a rectifier switch; the second upper switch and the second lower switch are connected sequentially to form another bridge arm, and either the second upper switch or the second lower switch is considered a rectifier switch. This forms a rectifier bridge, achieving a foolproof function (the input does not need to distinguish between positive and negative signs).

[0057] The first upper switch, the second upper switch, the first lower switch, and the second lower switch can all be MOSFETs, transistors, or diodes. The specific polarity varies depending on the connection method, and capacitors can also be connected in parallel.

[0058] In some embodiments, both the first and second upper-side switching transistors are NMOS transistors, and both the first and second lower-side switching transistors are PMOS transistors, wherein the first transmission terminal is the drain terminal, the second transmission terminal is the source terminal, and the control terminal is the gate terminal; or, both the first and second upper-side switching transistors are PMOS transistors, and both the first and second lower-side switching transistors are NMOS transistors, wherein the first transmission terminal is the source terminal, the second transmission terminal is the drain terminal, and the control terminal is the gate terminal; wherein each control terminal is controlled by the signal input from the first input terminal and the signal input from the second input terminal, respectively. The components connected to the first and second input terminals can be load elements. When connected, the load element does not need to distinguish between positive and negative polarities; that is, regardless of whether it is connected in the correct or reverse direction, it can output the rectified result through the first and second rectified output terminals of the rectifier bridge circuit, which is then recognized by the first and second controllers.

[0059] Indicatively, such as Figure 2 As shown, the first upper switch MN1 and the second upper switch MN2 are both NMOS transistors, and the first lower switch MP1 and the second lower switch MP2 are both PMOS transistors. The first upper switch MN1 and the second upper switch MN2 are connected sequentially from top to bottom, and the first lower switch MP1 and the second lower switch MP2 are connected sequentially from top to bottom. The common terminal between the gate of the first upper switch MN1 and the gate of the first lower switch MP1 is connected to the common terminal between the source of the second upper switch MN2 and the source of the second lower switch MP2. The common terminal between the gate of the second upper switch MN2 and the gate of the second lower switch MP2 is connected to the common terminal between the source of the first upper switch MN1 and the source of the first lower switch MP1. Thus, a rectifier bridge is formed by connecting four interconnected MOS transistors.

[0060] Combination Figure 2 It can be seen that the working circuit is provided with a first input terminal IN1 and a second input terminal IN2. The second transmission terminal of the first upper MOSFET MN1 and the second transmission terminal of the first lower MOSFET MP1 are connected to the first input terminal IN1, and the second transmission terminal of the second upper MOSFET MN2 and the second transmission terminal of the second lower MOSFET MP2 are connected to the second input terminal IN2. The rectifier bridge circuit inputs positive data signals, negative data signals, positive power signals, or negative power signals through the first input terminal IN1 and the second input terminal IN2. After rectification, the rectification result is output by the first rectifier output terminal and the second rectifier output terminal, which can identify the aforementioned positive and negative input signals.

[0061] The signals input to the first input terminal IN1 and the second input terminal IN2 originate from circuits that have data interaction relationships with the working circuit.

[0062] Additionally, the first and second input terminals are used to connect load components external to the operating circuit in parallel, such as... Figure 3 As shown, the first input terminal IN1 and the second input terminal IN2 are respectively connected to the two ends of the load element. IN1 and IN2 can both supply power to the load element and receive signal modulation; in short, a voltage difference can be applied across the two ends of the load element, either positive or negative. The load element can be a heating wire, used in heated atomizers. Both the signals input to the first and second input terminals are externally input signals. When the rectifier bridge circuit rectifies the externally input signals, a voltage difference exists between the signals input to the first and second input terminals. After rectification by the rectifier bridge circuit, the rectification result is output from the first and second rectifier output terminals, which determines the voltage polarity and thus detects the input signal.

[0063] Specifically, in combination Figure 2 As shown in the rectifier bridge circuit, when the second level is input to the first input terminal IN1 and the second input terminal IN2, the second lower switch MP2 is turned on, the second upper switch MN2 is turned off, the first lower switch MP1 is turned on, and the first upper switch MN1 is turned off. Then, the signal input to the second input terminal IN2 is connected to the ground terminal GND through the second lower switch MP2. At the same time, the signal input to the first input terminal IN1 is connected to the ground terminal GND (connected to the second rectifier output terminal) through the first lower switch MP1. The current is concentrated at the common terminal between the second transmission terminal of the second lower switch and the second transmission terminal of the first lower switch, thereby rectifying the signals input to the first input terminal IN1 and the second input terminal IN2 into the rectified result and outputting it from the second rectifier output terminal, which is then recognized by the first controller. The common terminal between the second transmission terminal of the second lower switch and the second transmission terminal of the first lower switch can be connected to the sampling terminal of the first controller. The value of the second level is less than or equal to the value 0.

[0064] When the first input terminal IN1 receives a second level and the second input terminal IN2 receives a first level, the second lower switch MP2 is turned on, the second upper switch MN2 is turned off, the first lower switch MP1 is turned off, and the first upper switch MN1 is turned on. The signals input to the first input terminal IN1 and the second input terminal IN2 have circuit paths in the first upper switch MN1 and the second lower switch MP2, respectively. Then, the signal input to the first input terminal IN1 is connected to the first rectifier output terminal through the first upper switch MN1 and output from the first rectifier output terminal, which is equivalent to connecting the first input terminal IN1 to the modulation circuit and the energy control module. Simultaneously, the signal input to the second input terminal IN2 is connected to the second rectifier output terminal through the second lower switch MP2 and output from the second rectifier output terminal, which is equivalent to connecting the second input terminal IN2 to the ground terminal. Based on this, combined with... Figure 1 and Figure 2It can be seen that the conduction method of each switching transistor in the current rectifier bridge circuit, ignoring the on-resistance of the switching transistor, is equivalent to... Figure 1 The first input terminal IN1 and the second input terminal IN2 are connected to the modulation circuit and the energy control module, respectively. This rectifies the signals input from the first input terminal IN1 and the second input terminal IN2 into the rectified result, which is then output by the first rectified output terminal and the second rectified output terminal for recognition by the first controller. The first upper switch MN1 and the second lower switch MP2 can be connected to the corresponding sampling terminals of the first controller, or corresponding circuit paths can be connected to the corresponding sampling terminals of the first controller. The value of the second level is less than or equal to 0, and the value of the first level is greater than 0.

[0065] When the first input terminal IN1 receives a first level and the second input terminal IN2 receives a second level, the second lower switch MP2 is turned off, the second upper switch MN2 is turned on, the first lower switch MP1 is turned on, and the first upper switch MN1 is turned off. The signals input to the first input terminal IN1 and the second input terminal IN2 have circuit paths in the first lower switch MP1 and the second upper switch MN2, respectively. Then, the signal input to the first input terminal IN1 is connected to the second rectifier output terminal through the first lower switch MP1 and output from the second rectifier output terminal, which is equivalent to connecting the first input terminal IN1 to the ground terminal. The signal input to the second input terminal IN2 is connected to the first rectifier output terminal through the second upper switch MN2 and output from the first rectifier output terminal, which is equivalent to connecting the second input terminal IN2 to the modulation circuit and the energy control module. Based on this, combined with... Figure 1 and Figure 2 It can be seen that the conduction method of each switching transistor in the current rectifier bridge circuit, ignoring the on-resistance of the switching transistor, is equivalent to... Figure 1 The first input terminal IN1 and the second input terminal IN2 are interchanged with their respective connections to the internal circuit modules of the chip (their connections to the modulation circuit and the energy control module are swapped). This rectifies the signals input to the second input terminal IN2 and the first input terminal IN1 (which can be considered as signals with opposite polarities to those input to the first input terminal IN1 and the second input terminal IN2) into the rectified result, which is then output by the first rectified output terminal and the second rectified output terminal for recognition by the first controller. The first lower switch MP1 and the second upper switch MN2 can be connected to the corresponding sampling terminals of the first controller, or corresponding existing circuit paths can be connected to the corresponding sampling terminals of the first controller. The value of the second level is less than or equal to 0, and the value of the first level is greater than 0.

[0066] When the first input terminal IN1 and the second input terminal IN2 both input a first level, the second lower switch MP2 is turned off, the second upper switch MN2 is turned on, the first lower switch MP1 is turned off, and the first upper switch MN1 is turned on. The signals input to the first input terminal IN1 and the second input terminal IN2 have circuit paths in the first upper switch MN1 and the second upper switch MN2, respectively. Then, the signal input to the first input terminal IN1 is connected to the first rectifier output terminal through the first upper switch MN1 and output from the first rectifier output terminal. Similarly, the signal input to the second input terminal IN2 is connected to the first rectifier output terminal through the second upper switch MN2 and output from the first rectifier output terminal. This rectifies the signals input to the first input terminal IN1 and the second input terminal IN2 into the rectified result, which is then output from the first rectifier output terminal and recognized by the first controller. The first upper switch MN1 and the second upper switch MN2 can be connected to the corresponding sampling terminals of the first controller, or the corresponding circuit paths can be connected to the corresponding sampling terminals of the first controller. The value of the second level is less than or equal to 0, and the value of the first level is greater than 0.

[0067] Therefore in Figure 2 During the charging or communication process between the working circuit shown and the external circuit, it can directly provide working voltage or current to the load element. During the charging or communication process, the rectifier bridge circuit is used to provide the load element with rectified data exchange source and power supply.

[0068] Based on the foregoing embodiments, this application discloses a chip, wherein the working circuit is internally arranged in the chip, combined with... Figure 1 and Figure 2 It can be seen that the pins of this chip are respectively set as the first input terminal IN1, the first input terminal IN2, the ground terminal GND, and the power supply terminal VCC. Figure 1 It is directly connected to the energy control module. Figure 2 The circuit is connected to the energy control module via a rectifier bridge circuit. For specific circuit connections and functional effects, please refer to the aforementioned embodiments. The circuit can be divided into modulating the signals input to the first input terminals IN1 and IN2, and charging the external capacitor through the ground terminal GND and the power supply terminal VCC. Further details will not be provided here. The other pins of this chip are defined according to the actual requirements of the chip.

[0069] Based on the operating circuit disclosed in the foregoing embodiments, the chip does not need to integrate the rectifier bridge circuit. If the rectifier bridge circuit is integrated, the problem of identifying the positive and negative signals generated by external devices (including load elements) connected to the first and second input terminals in opposite directions can be solved. Regardless of whether the rectifier bridge circuit is integrated, the chip can provide stable power supply to the load elements connected in parallel. The chip uses a modulation circuit to modulate the data to maintain normal data communication when the load elements are working. Moreover, the chip uses an external capacitor for power storage and power replenishment, which enhances the expandability and functional reusability of the chip's peripheral components. This solves the problem of the increased number of peripheral components caused by data modulation and demodulation, reduces chip manufacturing costs, and thus reduces the manufacturing cost of products assembled with the chip.

[0070] This application also discloses an atomizing device, which includes a first circuit and a second circuit; the first circuit includes the chip or the working circuit; regardless of whether the chip or the working circuit is used to connect to the second circuit, the second circuit includes a second controller, a power supply, a first switching transistor, and a second switching transistor; the first circuit also includes a load element and a capacitor. (Illustratively, as shown...) Figure 3 As shown, the second circuit includes a second controller MCU2, a power supply BAT, a first switch SW1 and a second switch SW2. Both the first switch SW1 and the second switch SW2 are controlled by the second controller MCU2. The first circuit also includes a load element and a capacitor C.

[0071] Preferably, the chip is an encryption chip, which can at least encrypt the data sent from the first circuit to the second circuit, and can also decode the data sent from the second circuit to the first circuit.

[0072] If the atomizing device uses Figure 1 The disclosed working circuit (without a rectifier bridge circuit) has a first input terminal, a second input terminal, a power supply terminal, and a ground terminal. A capacitor is connected in parallel to the power supply terminal and the ground terminal for energy storage. The two ends of the load element are connected in parallel to the first input terminal and the second input terminal to accept load modulation.

[0073] If the atomizing device uses Figure 2The disclosed operating circuit (with a rectifier bridge circuit) includes a first input terminal, a second input terminal, a power supply terminal, and a ground terminal. The rectifier bridge circuit also includes a first rectified output terminal and a second rectified output terminal. The energy control module includes a signal input terminal and a signal output terminal. The signal input terminal of the energy control module is connected to the first rectified output terminal of the rectifier bridge circuit, and a capacitor is connected in parallel between the signal output terminal of the energy control module and the second rectified output terminal of the rectifier bridge circuit. The two ends of the load element are connected in parallel to the first and second input terminals to receive load modulation, and a capacitor is connected in parallel to the power supply terminal and the ground terminal for energy storage.

[0074] The power supply is connected to the first input terminal via a first switching transistor and a second switching transistor, respectively; the second controller is connected to the second input terminal, providing a data path for communication between the second controller and the first circuit, such as... Figure 3 As shown, a first switching transistor SW1 is connected between the power supply VBAT and the first input terminal IN1 to form a switching path, and a second switching transistor SW2 is connected between the power supply VBAT and the second input terminal IN2 to form another switching path; a signal path is formed between the second controller MCU2 and the second input terminal IN2. When the second circuit is configured as the master circuit, the first circuit is configured as the slave circuit. The first switching transistor SW1 is used as a power switch, and the second switching transistor SW2 is used for data interaction, i.e., it is responsible for the communication between the second circuit and the first circuit, so that the first switching transistor SW1 and the second switching transistor SW2 are turned on in different operating modes.

[0075] A second controller is configured to control the power supply to charge the first circuit by turning on a first switch and / or a second switch before communicating with the first circuit. Specifically, the method of controlling the power supply to charge the first circuit by turning on the first switch and / or the second switch includes: controlling the power supply to charge the first circuit by turning on the first switch and the second switch sequentially, or controlling the power supply to charge the first circuit by turning on only the second switch, or controlling the power supply to charge the first circuit by turning on only the first switch. The voltage across the capacitor of the first circuit is higher when the first switch is turned on than when the second switch is turned on.

[0076] Schematic illustration: Before the second controller communicates with the first circuit, the second controller enters charging mode and requests the second circuit to charge the first circuit, at least the capacitors in the first circuit. This can be achieved by first turning on the first switching transistor, allowing the power supply to charge the capacitors, and controlling the on-time of the first switching transistor within a certain range to reduce the heat generation of the load components. The preferred on-time of the first switching transistor is 2ms to prevent overheating of the heating element. Then, the first switching transistor is turned off, and the second switching transistor is turned on to enter communication mode, where it continues to charge the capacitors in the first circuit. Figure 3 As shown, when the second controller controls the first switch SW1 to turn on but controls the second switch SW2 to turn off, the voltage across the capacitor C in the first circuit when the first switch SW1 is on is the first charging voltage; when the second controller controls the first switch SW1 to turn off but controls the second switch SW2 to turn on, the voltage across the capacitor C in the first circuit is the second charging voltage when the second switch SW2 is on. Since the equivalent internal resistance of the first switch SW1 when it is on is less than the equivalent internal resistance of the second switch SW2 when it is on, the first charging voltage is greater than the second charging voltage, causing the operating power of the load element when the first switch SW1 is on to be higher than its operating power when the second switch SW2 is on. In order to prevent the heating power of the load element from being too high, the first switch SW1 is not allowed to be on for a long time. Therefore, it is necessary to switch to the second switch SW2 after the preset time, so that the second switch SW2 can be on for a long time to support capacitor charging and data interaction between the second circuit and the first circuit.

[0077] Alternatively, the first switch can be kept off while the second switch is turned on, allowing the power supply to charge the capacitor until the voltage is lower than or equal to a preset voltage. Simultaneously with the second switch being turned on, the charge pump within the energy control module boosts the voltage output to the power supply terminal to charge the capacitor connected to the power supply terminal. The current when the branch containing the second switch is turned on may be less than the current when the branch containing the first switch is turned on.

[0078] Alternatively, the first switch is turned on and the second switch is turned off. At the same time, the charge pump in the energy control module does not need to boost the voltage. Instead, the power supply charges the capacitor until the voltage reaches the preset voltage, then the first switch is turned off and the second switch is turned on to enter the communication mode. The preset voltage is preferably 3V.

[0079] Alternatively, if the first and second switching transistors are turned on simultaneously, the current output capability is enhanced so as to provide the rated operating current to the load components; until the voltage across the capacitor of the first circuit reaches the preset voltage, the second controller receives the synchronous reset signal sent by the first circuit and determines that the charging of the first circuit is complete.

[0080] The second controller is used to detect whether a synchronous reset signal sent by the first circuit is received when the power supply is charging the first circuit. At this time, the second switch is turned on, while the first switch may be turned on or off. When the synchronous reset signal sent by the first circuit is detected, the second switch is kept on and communication with the first circuit begins. That is, the second controller sends data to the first circuit through the second input terminal IN2. After the data is sent, it waits for the first circuit to send response data to the second circuit. Then, the modulated data sent by the first circuit can be demodulated through the first input terminal IN1 to form normal data interaction. When the second controller communicates with the first circuit, the capacitor has stored enough power to keep the power supply to the working circuit. It can then re-enter the charging mode to continue receiving the charging power from the second input terminal IN2 and the first input terminal IN1 to replenish the power consumed by the working circuit.

[0081] In summary, the atomizing device disclosed in this application uses the switching of two switching transistors to switch between charging the first circuit and communicating with the first circuit, ensuring the heating of the parallel-connected load components and the modulation and interaction of external communication signals. Combined with the working circuit included in the first circuit, which is the basic circuit for identifying input signals generated by the positive and negative connections of external devices or for directly modulating input signals, it is possible to ensure normal data communication when the load components are working through a simplified circuit design, reducing the wires and pins for the interaction between the master circuit and the slave circuit.

[0082] As one embodiment, the second circuit further includes voltage divider resistors connected in series between the second switch and the second input terminal to facilitate voltage and current sampling; the power supply is connected to the first transmission terminal of the first switch, and the second transmission terminal of the first switch is connected to the first input terminal, so that when the first switch is turned on, the power supply charges the capacitor of the first circuit; schematically, as shown... Figure 3 As shown, the first switch SW1 is a PMOS transistor, and the second switch SW2 is also a PMOS transistor. The first transmission terminal of the first switch SW1 is the source terminal to be connected to the power supply VBAT, and the second transmission terminal of the first switch SW1 is the drain terminal. The second switch SW2 is also a PMOS transistor. The first transmission terminal of the first switch SW1 is the source terminal to be connected to the power supply VBAT, and the second transmission terminal of the first switch SW1 is the drain terminal. The drain terminal of the first switch SW1 is connected to the first input terminal IN1, thereby driving the energy control module to charge the capacitor C by switching the relevant switches in the rectifier bridge circuit on and off.

[0083] The power supply is connected to the first transmission terminal of the second switching transistor, the second transmission terminal of the second switching transistor is connected to one end of a voltage divider resistor, and the other end of the voltage divider resistor is connected to the first input terminal, so as to reduce the power supply provided by the power supply to the load element of the first circuit when the second switching transistor is turned on; preferably, an analog-to-digital converter is also connected between the voltage divider resistor and the first input terminal to sample and convert the current flowing through the voltage divider resistor, or to sample and convert the voltage across the voltage divider resistor. Schematic, as shown... Figure 3 As shown, the first transmission terminal of the second switch SW2 is the source terminal connected to the power supply VBAT, and the second transmission terminal of the second switch SW2 is the drain terminal. The second transmission terminal of the second switch SW2 is connected to one end of the voltage divider resistor Rt, and the other end of the voltage divider resistor Rt is connected to the first input terminal IN1. The voltage divider resistor Rt divides part of the voltage from the power supply to reduce the voltage input to the first input terminal IN1, thereby reducing the power of the load components connected in parallel to the first input terminal IN1 and the second input terminal IN2.

[0084] The second controller, when the second switch is turned on, receives the signal to be identified from the first circuit via the first and second input terminals, and demodulates the signal to be identified based on the current change in the voltage divider resistor. It should be noted that when the second switch is turned on, the first circuit sends the signal to be identified (a modulated signal generated by the modulation circuit of the first circuit) to the second circuit via the second input terminal. At this time, the second controller demodulates the signal to be identified based on the current change in the voltage divider resistor, as illustrated below. Figure 3 As shown, the second controller MCU2 can sample the change in current flowing through the voltage divider resistor Rt using an analog-to-digital converter, and then demodulate the signal from the first circuit based on the change in current flowing through the voltage divider resistor Rt. This allows it to identify whether the first circuit is in charging mode or communication mode. If it is in charging mode, the charging voltage and charging current corresponding to that mode can be identified, thereby determining the power of the load element. If it is in communication mode, the data frames in the signal to be identified can be parsed.

[0085] In summary, the second circuit disclosed in this application performs charging and data communication switching operations on the first circuit through two switching transistors, and a voltage divider resistor is connected in series in the switching transistor branch specifically responsible for communication. This can reduce the heat generation power of the parallel load components while ensuring the hardware circuit foundation for data communication.

[0086] As one embodiment, the second controller, before communicating with the first circuit, controls the power supply to charge the first circuit by sequentially turning on a first switch and a second switch. The method includes: the second controller controlling the first switch to be on for a preset time so that the power supply charges the capacitor of the first circuit. This method does not require a dedicated boost circuit; the supplied power is directly stored in the capacitor. However, the on-time of the first switch must be controlled to be shorter than the on-time of the second switch, with the preset time generally controlled within 2ms. Then, the first switch is turned off. At this time, the voltage across the capacitor may be lower than the preset voltage to avoid overheating of the load components. Simultaneously, the second switch is turned on, as illustrated below. Figure 3 As shown, after the second switch SW2 is turned on, it controls the power supply VBAT to charge the capacitor C of the first circuit by replacing the branch where the first switch SW1 is located. This continues until the voltage across the capacitor C reaches a preset voltage, which is sufficient to maintain the modulation circuit for data modulation. This confirms that the capacitor charging of the first circuit is complete. In addition, when the first switch is turned on, if the voltage across the capacitor reaches a preset voltage, it is confirmed that the capacitor charging of the first circuit is complete. Then, the second switch is turned on to start the communication between the second circuit and the first circuit.

[0087] In this embodiment, after the second switch SW2 is turned on, when the voltage across the capacitor reaches a preset voltage, the first controller sends a synchronous reset signal to the second circuit through the first and second input terminals. This signal can be considered as a combination of multiple equally spaced high and low levels, serving as the header of a data frame. The second controller then turns on the second switch. When the second switch is turned on, it receives the synchronous reset signal sent by the first circuit, determining that the second circuit has completed charging the first circuit. Thus, the first controller identifies the charging voltage and charging current corresponding to the charging mode, providing sufficient power support for the modulation operation of the modulation circuit in the first circuit and the data interaction between the first and second controllers.

[0088] As one embodiment, a second controller is used to control the power supply to charge the first circuit by only turning on the second switch. The method includes: the second controller controlling the first switch to remain off and turning on the second switch to charge the capacitor of the first circuit with the power supply until the voltage across the capacitor reaches a preset voltage; then, receiving a synchronous reset signal from the first circuit to determine that charging of the first circuit is complete. During the process of turning on the second switch to charge the capacitor of the first circuit with the power supply, the voltage input from the first input terminal... Figure 1 The working circuit shown does not require rectification by the rectifier bridge circuit but is directly adjusted by the energy control module. Figure 2In the working circuit shown, the voltage needs to be rectified by the rectifier bridge circuit and then adjusted by the energy control module, so that the voltage output by the energy control module to the power supply terminal is higher than the voltage input to the first input terminal, and the voltage output by the energy control module to the power supply terminal drives the modulation circuit to perform modulation.

[0089] Indicatively, such as Figure 3 As shown, when the second switch SW2 is turned on, the voltage input at the first input terminal IN1 after the power supply is divided by the voltage divider resistor Rt is 1.5V. After rectification by the rectifier bridge circuit and boosting by the energy control module, the voltage output by the energy control module to the power supply terminal VCC reaches 3V, so as to cooperate with the rectifier bridge circuit to drive the modulation circuit to perform data modulation and obtain the modulation signal to be sent to the second circuit.

[0090] It is worth noting that the energy control module internally incorporates a charge pump to boost the input voltage, which is then held steady by an externally connected capacitor. This capacitor maintains a direct current supply and does not participate in modulation encoding, allowing the modulation circuit to function normally. Specifically, by controlling the current flow of the switching unit's on / off control circuit, data can be modulated using a smaller current. The charge pump boosts the voltage to charge the capacitor.

[0091] As one embodiment, a second controller is used to control the power supply to charge the first circuit by only turning on the first switch. The method includes: the second controller controls the second switch to remain off and turns on the first switch to charge the capacitor of the first circuit. At this time, data interaction with the first circuit via the second input terminal can be stopped until the voltage across the capacitor reaches a preset voltage. Then, the second switch is turned on and the first switch is turned off. A synchronous reset signal is received from the first circuit to confirm that charging of the first circuit is complete. In this embodiment, during the process of turning on the first switch to charge the capacitor of the first circuit, in... Figure 1 In the working circuit shown, the signal input from the first input terminal does not need to be rectified by the rectifier bridge circuit. Figure 2 In the working circuit shown, the signal input from the first input terminal needs to be rectified by the rectifier bridge circuit; then the energy control module selects the circuit path between the modulation circuit and the capacitor, so that the signal input from the first input terminal can be directly output to the power supply terminal after being rectified by the rectifier bridge circuit or without being rectified by the rectifier bridge circuit, without needing to be regulated by the energy control module.

[0092] Indicatively, such as Figure 3As shown, when the first switching transistor SW1 is turned on, the power supply does not need to go through a resistor voltage divider. The voltage input at the first input terminal IN1 can be 3V. After rectification by the rectifier bridge circuit, the voltage output by the energy control module to the power supply terminal VCC reaches 3V, so as to cooperate with the rectifier bridge circuit to drive the modulation circuit to perform data modulation and obtain the modulation signal that needs to be sent to the second circuit.

[0093] As one application of the aforementioned atomizing device, the atomizing device can be divided into a load component and a power supply component; in this application, the first circuit is disposed in the load component of the atomizing device, and the second circuit is disposed in the power supply component of the atomizing device.

[0094] When the first circuit is connected to the second circuit, the second circuit is connected to the first input terminal and the second input terminal of the first circuit. The second circuit first charges the first circuit until the second circuit detects the synchronous reset signal sent by the first circuit. Then the second circuit starts to communicate with the first circuit. For example, the second circuit initiates data verification to the first circuit to verify whether the first controller installed in the first circuit is legitimate. That is, the second controller authenticates the identity of the first controller.

[0095] To illustrate, during the atomization process of the atomizing device, the operating current in the circuit is a large 3A. Under such a large current, the system releases a significant amount of energy, and any fluctuation can cause signal interference. Direct data exchange via data lines under this high current would have a significant impact and be difficult to implement. Therefore, the first circuit uses the switching of a switching unit (assuming the current drops to 100mA when the switching unit is off) to continuously change the current between large and small currents, thus adding a small current to modulate the data on top of the large current. The second controller and the first controller can record the current changes flowing through the resistors or load components in the circuit, thereby reconstructing the data and achieving the purpose of communication.

[0096] Compared with the prior art, the atomizing device disclosed in this application can provide stable power supply to the parallel-connected load components and achieve load modulation by relying on current changes, realizing communication between the first circuit and the second circuit; moreover, it uses an external capacitor for power storage and power replenishment, and the communication process is not affected by the large current generated during atomization, and there is no need to turn off the atomization function during communication, which enhances the expandability and functional reusability of the peripheral components of the working circuit and improves the user experience of the atomizing device; the atomizing device relies on at least two switching transistors and two resistors to achieve the communication function, the circuit structure is simple, which is conducive to the miniaturization of the atomizing device and also reduces costs.

[0097] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0098] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A working circuit based on load modulation, characterized in that, It includes a modulation circuit, an energy control module, and a first controller; the input signal port in the working circuit is used to connect load elements outside the working circuit in parallel; The modulation circuit is connected to the energy control module; the first controller is connected to both the modulation circuit and the energy control module. The first controller is used to control the modulation circuit to drive the current change in the load element for modulation. The energy control module is used to charge the capacitor connected to the working circuit using the input signal of the working circuit, and to select the capacitor connected to the working circuit to supply power to the modulation circuit.

2. The working circuit according to claim 1, characterized in that, The modulation circuit includes a current-limiting resistor and a switching unit; the input signal ports in the working circuit include a first input terminal and a second input terminal; the working circuit is provided with a power supply terminal and a ground terminal, wherein the external capacitor of the working circuit is a capacitor connected in parallel to the power supply terminal and the ground terminal; The first input terminal is connected to one end of the switching unit, one end of the switching unit is connected to the energy control module, the other end of the switching unit is connected to one end of the current-limiting resistor, the other end of the current-limiting resistor is connected to the ground terminal, and the second input terminal is connected to the other end of the current-limiting resistor, so that the change in the current input to the first input terminal and the second input terminal is fed back to the current-limiting resistor. A modulation circuit is used to drive the current in the load element to change when the switching unit changes from on to off or from off to on, so as to perform modulation. The switching unit is controlled by the first controller for both turning on and off.

3. The working circuit according to claim 2, characterized in that, The energy control module integrates a charge pump; the signal input terminal of the charge pump is connected to one end of the switching unit, and the signal output terminal of the charge pump is connected to the power supply terminal. A charge pump is used to boost the input signal at the first input terminal and then output the boosted result to the capacitor connected to the external working circuit, or to output the input signal at the first input terminal to the capacitor connected to the external working circuit without adjusting the input signal at the first input terminal, so as to charge the capacitor connected to the external working circuit. The charge pump is also used to select the circuit path between the capacitor connected to the working circuit and the modulation circuit, so that when the capacitor connected to the working circuit is charged to the preset voltage, it maintains the preset voltage to supply power to the modulation circuit. The signal input terminal of the charge pump is the signal input terminal of the energy control module; the signal output terminal of the charge pump is the signal output terminal of the energy control module.

4. The working circuit according to claim 2, characterized in that, The energy control module integrates a switch network. The signal input terminal of the switching network is connected to one end of the switching unit, and the signal output terminal of the switching network is connected to the power supply terminal to select the circuit path between the modulation circuit and the capacitor connected to the external capacitor of the working circuit. A switching network is used to switch between powering on and off the capacitor connected to the working circuit, thereby causing changes in the current in the modulation circuit to charge the capacitor connected to the working circuit, and to supply power to the modulation circuit when the capacitor is charged to a preset voltage. The signal input terminal of the switch network is the signal input terminal of the energy control module; the signal output terminal of the switch network is the signal output terminal of the energy control module.

5. The working circuit according to claim 1, characterized in that, The working circuit also includes a rectifier bridge circuit; the rectifier bridge circuit is connected to the modulation circuit and the energy control module, thereby connecting the modulation circuit and the energy control module; the first controller is connected to the rectifier bridge circuit. A rectifier bridge circuit is used to rectify the input signal to obtain the rectified result; the input signal port in the rectifier bridge circuit is the same as the input signal port in the working circuit. The first controller is used to induce a change in the current in the rectifier bridge circuit by controlling the modulation circuit, thereby causing a change in the current in the load element for modulation; the energy control module is used to charge the capacitor connected to the working circuit through the rectification result.

6. The working circuit according to claim 5, characterized in that, The modulation circuit includes a current-limiting resistor and a switching unit; the rectifier bridge circuit is provided with a first rectifier output terminal and a second rectifier output terminal. One end of the switching unit is connected to the first rectifier output terminal, and the other end of the switching unit is connected to one end of the current-limiting resistor. The other end of the current-limiting resistor is connected to the second rectifier output terminal. The first rectifier output terminal and the second rectifier output terminal are used to output the rectification result, so that the change in current in the rectifier bridge circuit is fed back to the current-limiting resistor. The modulation circuit is used to cause a change in the current in the rectifier bridge circuit when the switching unit changes from on to off or from off to on, thereby causing a change in the current in the load element to perform modulation. The switching unit is controlled by the first controller for both turning on and off.

7. The working circuit according to claim 6, characterized in that, The energy control module integrates a charge pump; the signal input terminal of the charge pump is connected to the first rectified output terminal of the rectifier bridge circuit, and the signal output terminal of the charge pump is connected to the power supply terminal. A charge pump is used to boost the rectification result and then output the boosted result to an external capacitor of the working circuit, or to output the rectification result to an external capacitor of the working circuit without adjusting the rectification result, so as to charge the external capacitor of the working circuit. The charge pump is also used to select the circuit path between the capacitor connected to the working circuit and the modulation circuit, so that when the capacitor connected to the working circuit is charged to the preset voltage, it maintains the preset voltage to supply power to the modulation circuit. The signal input terminal of the charge pump is the signal input terminal of the energy control module; the signal output terminal of the charge pump is the signal output terminal of the energy control module. The working circuit is provided with a power supply terminal and a ground terminal, and the external capacitor of the working circuit is a capacitor connected in parallel to the power supply terminal and the ground terminal.

8. The working circuit according to claim 6, characterized in that, The energy control module integrates a switch network. The signal input terminal of the switching network is connected to the first rectified output terminal of the rectifier bridge circuit, and the signal output terminal of the switching network is connected to the power supply terminal to select the circuit path between the modulation circuit, the rectifier bridge circuit and the capacitor connected to the external working circuit. A switching network is used to switch between powering on and off the capacitor connected to the working circuit, thereby causing changes in the current in the modulation circuit and the rectifier bridge circuit, so that the rectification result charges the capacitor connected to the working circuit, and supplies power to the modulation circuit when the capacitor is charged to a preset voltage. Wherein, the signal input terminal of the switch network is the signal input terminal of the energy control module; the signal output terminal of the switch network is the signal output terminal of the energy control module; The working circuit is provided with a power supply terminal and a ground terminal, and the external capacitor of the working circuit is a capacitor connected in parallel to the power supply terminal and the ground terminal.

9. The working circuit according to claim 6, characterized in that, The rectifier bridge circuit includes a first upper switch transistor, a second upper switch transistor, a first lower switch transistor, and a second lower switch transistor; The first transmission terminal of the first upper switch transistor and the first transmission terminal of the second upper switch transistor are both connected to the energy control module. The control terminal of the first upper switch is connected to the control terminal of the first lower switch, and the second transmission terminal of the first upper switch is connected to the second transmission terminal of the first lower switch. The control terminal of the second upper switch is connected to the control terminal of the second lower switch, and the second transmission terminal of the second upper switch is connected to the second transmission terminal of the second lower switch. The control terminal of the first lower switch transistor is connected to the second transmission terminal of the second lower switch transistor. The control terminal of the second lower switch is connected to the second transmission terminal of the first lower switch. The first transmission terminal of the second lower switch is connected to the first transmission terminal of the first lower switch. The first transmission terminal of the first upper switch and the first transmission terminal of the second upper switch are connected together to the first rectifier output terminal, and the first transmission terminal of the second lower switch and the first transmission terminal of the first lower switch are connected together to the second rectifier output terminal.

10. The working circuit according to claim 9, characterized in that, The working circuit is provided with a first input terminal and a second input terminal. The second transmission terminal of the first upper switch transistor and the second transmission terminal of the first lower switch transistor are connected to the first input terminal, and the second transmission terminal of the second upper switch transistor and the second transmission terminal of the second lower switch transistor are connected to the second input terminal. The input signal ports in the rectifier bridge circuit include a first input terminal and a second input terminal, which are used to connect load elements outside the working circuit in parallel. The signals input to the first input terminal and the signals input to the second input terminal are both externally input signals. When the rectifier bridge circuit rectifies the externally input signals, there is a voltage difference between the signals input to the first input terminal and the signals input to the second input terminal.

11. A chip, characterized in that, The chip is internally equipped with the working circuit described in any one of claims 1 to 10.

12. An atomizing device, characterized in that, The atomizing device includes a first circuit and a second circuit. The first circuit includes the chip of claim 11 or the working circuit of any one of claims 1 to 10. The first circuit also includes a load element and a capacitor. The second circuit includes a second controller, a power supply, a first switching transistor, and a second switching transistor. The working circuit is provided with a first input terminal, a second input terminal, a power supply terminal, and a ground terminal, with capacitors connected in parallel to the power supply terminal and the ground terminal; the two ends of the load element are connected in parallel to the first input terminal and the second input terminal. The power supply is connected to the first input terminal through the first switching transistor and the second switching transistor respectively; the second controller is connected to the second input terminal, providing a data path for communication between the second controller and the first circuit; The second controller is configured to control the power supply to charge the first circuit by turning on the first switch and / or the second switch before it communicates with the first circuit. The second controller is configured to detect whether a synchronous reset signal sent by the first circuit is received when the power supply is charging the first circuit, and then keep the second switch on when the synchronous reset signal sent by the first circuit is detected, and start communicating with the first circuit; wherein, when the second controller is communicating with the first circuit, the capacitor continues to supply power to the working circuit.

13. The atomizing device according to claim 12, characterized in that, The second circuit also includes voltage divider resistors; The power supply is connected to the first transmission terminal of the first switching transistor, and the second transmission terminal of the first switching transistor is connected to the first input terminal, so that when the first switching transistor is turned on, the power supply can charge the capacitor of the first circuit. The power supply is connected to the first transmission terminal of the second switching transistor, the second transmission terminal of the second switching transistor is connected to one end of the voltage divider resistor, and the other end of the voltage divider resistor is connected to the first input terminal, so as to reduce the power supply provided by the power supply to the load element of the first circuit when the second switching transistor is turned on.

14. The atomizing device according to claim 13, characterized in that, The method of controlling the power supply to charge the first circuit by turning on the first switch and / or the second switch includes: The power supply can be controlled to charge the first circuit by sequentially turning on the first and second switching transistors, or by turning on only the second switching transistor, or by turning on only the first switching transistor. In this circuit, the voltage across the capacitor is higher when the first switch is turned on than when the second switch is turned on.

15. The atomizing device according to claim 14, characterized in that, The second controller, used to control the power supply to charge the first circuit by sequentially turning on the first and second switching transistors, includes the following method: The second controller is used to control the first switch to be turned on for a preset time, then turn off the first switch and turn on the second switch at the same time, until the voltage across the capacitor reaches a preset voltage, and then determine that the charging of the first circuit is complete.

16. The atomizing device according to claim 14, characterized in that, The second controller, used to control the power supply to charge the first circuit by only turning on the second switching transistor, includes the following method: The second controller is used to control the first switch to remain off and to turn on the second switch so that the power supply charges the capacitor of the first circuit until the voltage across the capacitor reaches a preset voltage, thus determining that the charging of the first circuit is complete; wherein, the voltage input from the first input terminal is adjusted by the energy control module so that the voltage output by the energy control module to the power supply terminal is higher than the voltage input from the first input terminal, and the voltage output by the energy control module to the power supply terminal drives the modulation circuit to perform modulation.

17. The atomizing device according to claim 14, characterized in that, The second controller, used to control the power supply to charge the first circuit by only turning on the first switching transistor, includes the following method: The second controller is used to control the second switch to remain off and to turn on the first switch so that the power supply charges the capacitor of the first circuit until the voltage across the capacitor reaches a preset voltage, and then determines that the charging of the first circuit is complete; wherein, the signal input from the first input terminal is used to select the circuit path between the modulation circuit and the capacitor through the energy control module.

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