A control circuit, an aerosol generating circuit and an aerosol generating device

Abstract

The present invention discloses a control circuit for an aerosol generating device, comprising: a primary power supply; a power conversion unit, the power conversion unit comprising a first input interface, a first enable interface and a first output interface, the first input interface is electrically connected to the primary power supply, the first enable interface is used to receive an enable signal, the power conversion unit is used to convert the primary power supply into a secondary power supply according to the enable signal, and the first output interface is used to output the secondary power supply; a switch unit, the switch unit is electrically connected to the first enable interface and the primary power supply, the switch unit is used to send a first enable signal to the first enable interface; a control unit, the control unit is electrically connected to the secondary power supply, and the secondary power supply is used to power the control unit. By adopting the above technical solution, the standby power consumption of the control circuit during application is low. The present invention also discloses an aerosol generating circuit and an aerosol generating device.

Description

Technical Field

[0001] The present invention relates to the field of circuits, and in particular to a control circuit, an aerosol generating circuit and an aerosol generating device. Background Art

[0002] At present, many electronic products use batteries, such as recyclable lithium batteries, as power sources, and new tobacco products are one of them. As a substitute for traditional cigarettes, new tobacco products such as electronic cigarettes and heat-not-burn cigarettes are essentially a kind of aerosol generating device. The new tobacco products on the market are all devices that drive the aerosol generating load through a power source to atomize the aerosol generating material to form simulated cigarette smoke. Compared with traditional cigarettes, new tobaccos avoid harmful substances such as tar and carbon monoxide brought by traditional cigarettes while meeting the physiological needs of users.

[0003] Aerosol generating devices of new tobacco products are usually powered by batteries, especially lithium batteries. During operation, the device is managed by control circuits, such as heating, temperature control, LED display, standby, charging management, power management, etc. The battery life of the aerosol generating device is mainly determined by the capacity of the battery used and the power consumption of the device. When the battery capacity is constant, the lower the power consumption of the device, the longer the battery life. The power consumption of the device is mainly composed of the standby power consumption in the standby state and the power consumption required for aerosol generation. When the battery capacity is constant, reducing the power consumption of any of the above parts has a positive significance for improving the battery life of the device. Summary of the invention

[0004] The applicant found that the existing aerosol generating device has a problem of poor battery life. The applicant further found that this is mainly because in the control circuit of the aerosol generating device, the control unit is often directly powered by the power supply, resulting in high standby power consumption, which in turn leads to poor battery life of the aerosol generating device.

[0005] The purpose of the present invention is to solve the problem of high standby power consumption of the control circuit in the application process in the prior art.

[0006] To solve the above technical problems, an embodiment of the present invention discloses a control circuit for an aerosol generating device, comprising: a primary power supply; a power conversion unit, the power conversion unit comprising a first input interface, a first enable interface and a first output interface, the first input interface is electrically connected to the primary power supply, the first enable interface is used to receive an enable signal, the power conversion unit is used to convert the primary power supply into a secondary power supply according to the enable signal, and the first output interface is used to output the secondary power supply; a switch unit, the switch unit is electrically connected to the first enable interface and the primary power supply, the switch unit is used to send a first enable signal to the first enable interface; a control unit, the control unit is electrically connected to the secondary power supply, and the secondary power supply is used to power the control unit.

[0007] By adopting the above technical solution, the standby power consumption of the control circuit during application is low.

[0008] Optionally, the control unit is electrically connected to the first enabling interface, and the control unit is further configured to send a second enabling signal to the first enabling interface.

[0009] Optionally, a charging conversion unit is also included, which includes a second enabling interface, a second output interface and a power interface. The second enabling interface is electrically connected to the control unit, the second output interface is electrically connected to the primary power supply, and the power interface of the charging conversion unit is electrically connected to the external power supply. The charging conversion unit is used to control the external power supply to charge the primary power supply.

[0010] Optionally, an external power supply is electrically connected to the first enabling interface and the control unit, and the external power supply is further used to send a third enabling signal to the first enabling interface.

[0011] Optionally, it also includes a voltage monitoring unit, which is electrically connected to the primary power supply and the control unit. The voltage monitoring unit is used to monitor the voltage of the primary power supply and send the voltage value of the primary power supply to the control unit.

[0012] Optionally, the control unit is further used to send a voltage monitoring drive signal to the voltage monitoring unit, and the voltage monitoring unit monitors the voltage of the primary power supply according to the voltage monitoring drive signal.

[0013] An embodiment of the present invention also discloses an aerosol generating circuit, comprising any of the aforementioned control circuits, and also comprising an aerosol generating unit, wherein the aerosol generating unit is electrically connected to a primary power supply and a control unit, the primary power supply is also used to power the aerosol generating unit, and the control unit is also used to send an aerosol generating drive signal to the aerosol generating unit, and the aerosol generating unit is used to drive an aerosol generating load to work according to the aerosol generating drive signal to generate aerosol.

[0014] Optionally, a load monitoring unit is further included, which is electrically connected to the control unit and the aerosol generating load. The load monitoring unit is used to monitor the working state of the aerosol generating load and send the obtained monitoring value to the control unit.

[0015] Optionally, the control unit is further configured to send a load monitoring drive signal to the load monitoring unit, and the load monitoring unit monitors the working state of the aerosol generating load according to the load monitoring drive signal.

[0016] An embodiment of the present invention further discloses an aerosol generating device, comprising any of the aforementioned aerosol generating circuits. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic block diagram of a control circuit in one embodiment of the present invention is shown;

[0018] Figure 2 A schematic block diagram of a control circuit in another embodiment of the present invention is shown;

[0019] Figure 3 A schematic block diagram showing a control circuit in another embodiment of the present invention;

[0020] Figure 4 A schematic block diagram of a control circuit in another embodiment of the present invention is shown;

[0021] Figure 5 A schematic block diagram showing a control circuit in another embodiment of the present invention;

[0022] Figure 6 A schematic block diagram of an aerosol generating circuit in one embodiment of the present invention is shown;

[0023] Figure 7 A schematic block diagram of an aerosol generating circuit in another embodiment of the present invention is shown. DETAILED DESCRIPTION

[0024] The following specific embodiments illustrate the implementation of the present invention, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this invention are limited to this implementation. On the contrary, the purpose of introducing the invention in conjunction with the implementation is to cover other options or modifications that may extend based on the claims of the present invention. In order to provide a deep understanding of the present invention, the following description will include many specific details. The present invention can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present invention, some specific details will be omitted in the description. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0025] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0026] The terms “first”, “second”, “third”, etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0027] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0028] Reference Figure 1As shown, an embodiment of the present invention provides a control circuit for an aerosol generating device, including: a primary power supply 1; a power conversion unit 2, the power conversion unit 2 includes a first input interface 21, a first enabling interface 22 and a first output interface 23, the first input interface 21 is electrically connected to the primary power supply 1, the first enabling interface 22 is used to receive an enabling signal, the power conversion unit 2 is used to convert the primary power supply 1 into a secondary power supply 3 according to the enabling signal, and the first output interface 23 is used to output the secondary power supply 3; a switch unit 4, the switch unit 4 is electrically connected to the first enabling interface 22 and the primary power supply 1, the switch unit 4 is used to send a first enabling signal to the first enabling interface 22; a control unit 5, the control unit 5 is electrically connected to the secondary power supply 3, and the secondary power supply 3 is used to power the control unit 5. In this embodiment, the primary power supply 1 supplies power to the switch unit 4, when the control circuit is in a working state, the switch unit 4 is closed, the switch unit 4 can send a first enabling signal to the first enabling interface 22, at this time the power conversion unit 2 starts to work according to the first enabling signal, converts the primary power supply 1 into the secondary power supply 3, the secondary power supply 3 supplies power to the control unit 5, and the control unit 5 starts to work. When the control circuit is in standby mode, the switch unit 4 is disconnected, and the first enable interface 22 of the power conversion unit 2 does not receive the corresponding enable signal, so the power conversion unit 2 does not work, and the secondary power supply 3 is not output, and the control unit 5 does not work. At this time, the standby power consumption of the control unit 5 can be close to zero, which greatly reduces the standby power consumption of the entire control circuit. In one embodiment, the power conversion unit 2 is a low voltage drop linear regulator.

[0029] By adopting the above technical solution, the control circuit has low standby power consumption during use, thereby improving the endurance of the aerosol generating device using the control circuit.

[0030] Reference Figure 2 As shown, another embodiment of the present invention provides a control circuit, the control unit 5 is electrically connected to the first enabling interface 22, and the control unit 5 is also used to send a second enabling signal to the first enabling interface 22. In this embodiment, as long as the power conversion unit 2 starts to work according to the instantaneous first enabling signal, the control unit 5 can send the second enabling signal to the first enabling interface 22 during the working process under the power supply of the secondary power supply 3, which can ensure the smooth and continuous operation of the power conversion unit 2 during the entire working process.

[0031] Reference Figure 3As shown, another embodiment of the present invention provides a control circuit, further comprising a charging conversion unit 6, the charging conversion unit 6 comprising a second enabling interface 61, a second output interface 62 and a power interface 63, the second enabling interface 61 is electrically connected to the control unit 5, the second output interface 62 is electrically connected to the primary power supply 1, the power interface 63 of the charging conversion unit 6 is electrically connected to the external power supply 7, and the charging conversion unit 6 is used to control the external power supply 7 to charge the primary power supply 1. In this embodiment, the second enabling interface 61 of the charging conversion unit 6 is electrically connected to the control unit 5, and the operation of the charging conversion unit 6 is controlled by the control unit 5, so that the power consumption of the control circuit in the non-charging state can be reduced.

[0032] Reference Figure 4 As shown, another embodiment of the present invention provides a control circuit, the external power supply 7 is electrically connected to the first enabling interface 22 and the control unit 5, and the external power supply 7 is also used to send a third enabling signal to the first enabling interface 22. In this embodiment, as long as the power conversion unit 2 starts the working state according to the instantaneous first enabling signal and / or the second enabling signal, the control unit 5 can control the external power supply 7 to charge the primary power supply 1 under the power supply of the secondary power supply 3. At this time, the external power supply 7 can send the third enabling signal to the first enabling interface 22 to ensure the smooth and continuous operation of the power conversion unit 2 during the entire charging process.

[0033] Reference Figure 5 As shown, another embodiment of the present invention provides a control circuit, which also includes a voltage monitoring unit 8, which is electrically connected to the primary power supply 1 and the control unit 5. The voltage monitoring unit 8 is used to monitor the voltage of the primary power supply 1 and send the voltage value of the primary power supply 1 to the control unit 5. In this embodiment, the voltage value of the primary power supply 1 is monitored by the voltage monitoring unit 8, and feedback can be given to the control unit 5 in a timely manner, which is convenient for the control unit 5 to process and apply data. In one embodiment, when the voltage value sent by the voltage monitoring unit 8 is lower than the normal working voltage range of the primary power supply 1, the control unit 5 can issue a charging reminder to remind the user that the power of the primary power supply 1 is insufficient, thereby ensuring the safety of electricity use and improving the user experience.

[0034] Another embodiment of the present invention provides a control circuit, wherein the control unit 5 is further used to send a voltage monitoring drive signal to the voltage monitoring unit 8, and the voltage monitoring unit 8 monitors the voltage of the primary power supply 1 according to the voltage monitoring drive signal. In this embodiment, the voltage monitoring drive signal of the voltage monitoring unit 8 is sent by the control unit 5, that is, only when the control unit 5 is working, that is, when the power conversion unit 2 is working to generate the secondary power supply 3, the voltage monitoring unit 8 may receive the corresponding voltage monitoring drive signal. Therefore, in the standby state, the circuit of the voltage monitoring unit 8 is in an open circuit state, the standby power consumption of the voltage monitoring unit 8 is greatly reduced, and the overall standby power consumption of the control circuit is also reduced accordingly.

[0035] An embodiment of the present invention provides an aerosol generating circuit, including any control circuit in the above embodiments. Figure 6 As shown, the aerosol generating circuit also includes an aerosol generating unit 9, which is electrically connected to the primary power supply 1 and the control unit 5. The primary power supply 1 is also used to supply power to the aerosol generating unit 9, and the control unit 5 is also used to send an aerosol generating drive signal to the aerosol generating unit 9. The aerosol generating unit 9 is used to drive the aerosol generating load 10 to work according to the aerosol generating drive signal to generate aerosol. In this embodiment, the control unit 5 drives the aerosol generating unit 9 to work and generate aerosol, that is, in the standby state, the circuit of the aerosol generating unit 9 is in an open circuit state, at which time the standby power consumption of the aerosol generating unit 9 and the control circuit is greatly reduced, and the overall standby power consumption of the aerosol generating circuit is also reduced accordingly.

[0036] Another embodiment of the present invention provides an aerosol generating circuit. In one embodiment, referring to Figure 7 As shown, it also includes a load monitoring unit 11, which is electrically connected to the control unit 5 and the aerosol generating load 10. The load monitoring unit 11 is used to monitor the working state of the aerosol generating load 10 and send the obtained monitoring value to the control unit 5. In this embodiment, the load monitoring unit 11 may include one or more of a temperature monitoring unit, a voltage monitoring unit, a current monitoring unit, etc., for monitoring the working state of the load. For example, the monitoring unit includes a temperature monitoring unit, which monitors the temperature value of the aerosol generating load 10 at this time, and sends the obtained temperature value to the control unit 5, so that the control unit 5 can process and apply the data. In one embodiment, when the temperature value increases from 0°C to a certain set temperature value, such as 380°C, the preheating stage of the aerosol generating load 10 is completed, and the control unit 5 can control the aerosol generating unit 9 to enter the temperature holding stage. Alternatively, when the temperature is higher than a certain set temperature value, the control unit 5 can judge that the aerosol generating load 10 is overheated according to the temperature value, reduce the power supply, or send an alarm signal. Setting the load monitoring unit 11 can help ensure power supply safety and improve user experience.

[0037] Another embodiment of the present invention provides an aerosol generating circuit, wherein the control unit 5 is further used to send a load monitoring drive signal to the load monitoring unit 11, and the load monitoring unit 11 monitors the working state of the aerosol generating load 10 according to the load monitoring drive signal. That is, in this embodiment, when the aerosol generating circuit is in a standby state, that is, when it does not need to work, there is no load monitoring drive signal at this time, and the circuit of the load monitoring unit 11 is in an open circuit state. At this time, the standby power consumption of the load monitoring unit 11 is greatly reduced, and the overall standby power consumption of the aerosol generating circuit is also reduced accordingly.

[0038] An embodiment of the present invention provides an aerosol generating device, comprising an aerosol generating circuit according to any one of the aforementioned embodiments.

[0039] By adopting the above technical solution, the aerosol generating device has low standby power consumption and strong endurance.

[0040] Although the present invention has been illustrated and described with reference to certain preferred embodiments of the present invention, it should be understood by those skilled in the art that the above is a further detailed description of the present invention in conjunction with specific embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. Those skilled in the art may make various changes in form and details, including making several simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A control circuit for an aerosol generating device, characterized in that: include: Primary power supply; A power conversion unit, the power conversion unit comprising a first input interface, a first enable interface and a first output interface, the first input interface is electrically connected to the primary power supply, the first enable interface is used to receive an enable signal, the power conversion unit is used to convert the primary power supply into a secondary power supply according to the enable signal, and the first output interface is used to output the secondary power supply; a switch unit, the switch unit being electrically connected to the first enabling interface and the primary power supply, and the switch unit being used to send a first enabling signal to the first enabling interface; A control unit, the control unit is electrically connected to the secondary power supply, and the secondary power supply is used to supply power to the control unit; A charging conversion unit, the charging conversion unit comprising a second enabling interface, a second output interface and a power interface, the second enabling interface is electrically connected to the control unit, the second output interface is electrically connected to the primary power supply, the power interface of the charging conversion unit is electrically connected to an external power supply, the charging conversion unit is used to control the external power supply to charge the primary power supply, the external power supply is electrically connected to the first enabling interface and the control unit, and the external power supply is also used to send a third enabling signal to the first enabling interface.

2. The control circuit according to claim 1, characterized in that: The control unit is electrically connected to the first enabling interface, and the control unit is further configured to send a second enabling signal to the first enabling interface.

3. The control circuit according to claim 1, characterized in that: It also includes a voltage monitoring unit, which is electrically connected to the primary power supply and the control unit. The voltage monitoring unit is used to monitor the voltage of the primary power supply and send the voltage value of the primary power supply to the control unit.

4. The control circuit according to claim 3, characterized in that: The control unit is further configured to send a voltage monitoring drive signal to the voltage monitoring unit, and the voltage monitoring unit monitors the voltage of the primary power supply according to the voltage monitoring drive signal.

5. An aerosol generating circuit, characterized in that: It includes a control circuit as described in any one of claims 1 to 4, and also includes an aerosol generating unit, the aerosol generating unit is electrically connected to the primary power supply and the control unit, the primary power supply is also used to power the aerosol generating unit, the control unit is also used to send an aerosol generating drive signal to the aerosol generating unit, and the aerosol generating unit is used to drive an aerosol generating load to work according to the aerosol generating drive signal to generate aerosol.

6. The aerosol generating circuit according to claim 5, characterized in that: It also includes a load monitoring unit, which is electrically connected to the control unit and the aerosol generating load. The load monitoring unit is used to monitor the working state of the aerosol generating load and send the obtained monitoring value to the control unit.

7. The aerosol generating circuit according to claim 6, characterized in that: The control unit is further configured to send a load monitoring drive signal to the load monitoring unit, and the load monitoring unit monitors the working state of the aerosol generating load according to the load monitoring drive signal.

8. An aerosol generating device, characterized in that: Comprising an aerosol generating circuit as claimed in any one of claims 5 to 7.

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