WO2022241643A1

WO2022241643A1 - Drive circuit for electronic atomizing apparatus, and electronic atomizing apparatus

Info

Publication number: WO2022241643A1
Application number: PCT/CN2021/094400
Authority: WO
Inventors: 周军; 方伟明; 周庆良
Original assignee: 深圳麦克韦尔科技有限公司
Priority date: 2021-05-18
Filing date: 2021-05-18
Publication date: 2022-11-24

Abstract

A drive circuit for an electronic atomizing apparatus, and an electronic atomizing apparatus. The drive circuit comprises: a light-emitting element (11); a power supply device (12), which is connected to the light-emitting element (11) to supply a power supply voltage, wherein the rated voltage of the power supply device (12) is less than 3.7 V; and a sensing apparatus (13), which is connected to a loop in which the light-emitting element (11) and the power supply device (12) are located, so as to control the light-emitting element (11) to emit light under the drive of the power supply device (12), wherein the on voltage of the light-emitting element (11) is less than the power supply voltage corresponding to the rated voltage of the power supply device (12). Therefore, not only can the number of puffs taken on an electronic atomizing apparatus be increased, but a light-emitting element can also be enabled to emit light.

Description

A driving circuit of an electronic atomization device and the electronic atomization device

technical field

The invention relates to the technical field of electronic atomization, in particular to a driving circuit of an electronic atomization device and the electronic atomization device.

Background technique

In the prior art, electronic atomization devices generally use general-purpose lithium batteries for power supply. Common lithium batteries have a rated voltage of 3.7V and an output voltage of 2.5V to 4.2V. The number of pumpable puffs of the device is extremely limited.

Contents of the invention

The invention provides a driving circuit of an electronic atomization device and the electronic atomization device, which can further increase the number of puffs of the electronic atomization device.

In order to solve the above technical problems, the first technical solution provided by the present invention is to provide a driving circuit for an electronic atomization device, including: a light emitting element; a power supply device, which is connected to the light emitting element to provide a power supply voltage, wherein the The rated voltage of the power supply device is less than 3.7V; the sensing device connects the circuit where the light emitting element and the power supply device are located, so as to control the light emitting element to emit light under the drive of the power supply device; wherein, the light emitting element The turn-on voltage is lower than the power supply voltage corresponding to the rated voltage of the power supply device.

Wherein, the sensing device is used to send a control signal to the circuit where the light-emitting element and the power supply device are located, so as to adjust the voltage difference between the two ends of the light-emitting element to drive whether the light-emitting element emits light; wherein, when the When the control signal is at the first level, the light emitting element does not emit light; when the control signal is at the second level, the light emitting element emits light.

Wherein, the first level is a logic high state, and the second level is a logic low state.

Wherein, the rated voltage of the power supply device is 2.8V.

Wherein, the power supply voltage of the power supply device ranges from 1.6V to 3.6V.

Wherein, the conduction voltage of the light-emitting element ranges from 1.6V to 2.4V.

Wherein, the light-emitting element is at least one of red LED, yellow LED, orange LED, and yellow-green LED.

Wherein, the working voltage of the sensing device matches the range of the power supply voltage of the power supply device so as to work normally under the power supply voltage provided by the power supply device.

Wherein, the power supply device is a lithium battery.

Wherein, the sensing device includes: a sensor for detecting changes in airflow, and outputting a detection signal when a change in airflow is detected; a controller for receiving the detection signal output by the sensor to control the light-emitting element It emits light under the driving of the supply voltage.

Wherein, the sensing device is a MEMS sensor.

In order to solve the above-mentioned technical problems, the second technical solution provided by the present invention is to provide an electronic atomization device, including the drive circuit of any one of the above-mentioned electronic atomization devices.

The beneficial effect of the present invention is different from the prior art. The present invention uses a power supply device with a rated voltage of less than 3.7V to provide a power supply voltage for the light-emitting element, and uses a sensing device to control the light-emitting element to emit light under the drive of the power supply voltage, wherein the light-emitting element The turn-on voltage of the power supply device is lower than the power supply voltage corresponding to the rated voltage of the power supply device. In this way, the number of puffs available for the electronic atomization device can be increased, and the light-emitting element can be made to emit light.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative work, wherein:

FIG. 1 is a schematic structural diagram of the first embodiment of the drive circuit of the electronic atomization device of the present invention;

FIG. 2 is a schematic structural diagram of an embodiment of the drive circuit of the electronic atomization device shown in FIG. 1;

Fig. 3 is a schematic structural view of an embodiment of the sensing device;

Fig. 4 is a schematic structural diagram of an embodiment of the electronic atomization device of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

In reality, electronic atomization devices generally use general-purpose lithium batteries for power supply. The rated voltage of ordinary lithium batteries is 3.7V, and the output voltage is 2.5V to 4.2V. The pumpable times of the chemical device is greatly restricted. After research, the inventor found that under the same volume, the energy density of low-voltage batteries is higher, and the capacity of ordinary lithium batteries is lower than that of low-voltage batteries. Therefore, this application uses low-voltage batteries for power supply. However, since the rated voltage of the low-voltage battery can be, for example, 2.8V, and the corresponding output voltage is 1.6V-3.6V, it cannot stably drive the light-emitting elements on the electronic atomization device, so in reality, it is usually not possible in the field of electronic atomization. Use low-voltage batteries instead of ordinary lithium batteries. However, in order to increase the number of suction ports, the present application uses a low-voltage battery for power supply, and ensures that the light-emitting element can emit light stably.

Please refer to FIG. 1 for details, which is a schematic structural diagram of a first embodiment of a driving circuit of an electronic atomization device according to the present invention. The driving circuit includes: a light emitting element 11 , a power supply device 12 and a sensing device 13 . Wherein, the power supply device 12 is connected to the light-emitting element 11 and the sensing device 13, and is used to provide a power supply voltage for the light-emitting element 11 and the sensing device 13, and the sensing device 13 is further connected to the light-emitting element 11, and is used to control the light-emitting element 11 in the power supply device 12. Lights up at the supplied supply voltage.

Specifically, in this embodiment, the rated voltage of the power supply device 12 is less than 3.7V. In reality, electronic atomization devices generally use general-purpose lithium batteries for power supply. The rated voltage of ordinary lithium batteries is 3.7V, and the output voltage is 2.5V to 4.2V. The pumpable times of the chemical device is greatly restricted. The inventor found through research that under the same volume, the energy density of low-voltage batteries is higher, and the capacity of ordinary lithium batteries is lower than that of low-voltage batteries. Therefore, this application uses low-voltage batteries with a rated voltage lower than 3.7V for Power supply to further increase the puffing times of the electronic atomization device.

The sensing device 13 is connected to the circuit where the light-emitting element 11 and the power supply device 12 are located, so as to control the light-emitting element 11 to emit light under the drive of the power supply voltage provided by the power supply device 12. When a general-purpose lithium battery is used for power supply, various light-emitting elements can be turned on, but the applicant has found through research that some light-emitting elements cannot be turned on when a low-voltage battery with a rated voltage lower than 3.7V is used for power supply. . Therefore, in this application, in order to increase the puffing times of the electronic atomization device, the conduction voltage of the light-emitting element 11 is further set to be lower than the power supply voltage corresponding to the rated voltage of the power supply device 12, so that when using a low voltage On the premise that the power supply device 12 supplies power, it can ensure that the light emitting element 11 is turned on.

In an embodiment of the present invention, the rated voltage of the power supply device 12 is 2.8V, and the power supply voltage provided by the power supply device ranges from 1.6V to 3.6V. When using the power supply device 12 of the present application for power supply, although the number of puffs that can be increased can be increased, the light emitting element 11 cannot be turned on. Based on this idea, the present application sets that the turn-on voltage of the light emitting element 11 is not greater than the power supply voltage corresponding to the rated voltage of the power supply device 12 . That is to say, it is required that the turn-on voltage of the light-emitting element 11 is not greater than 2.8V, so that it can emit light when the power supply device 123 with a rated voltage of 2.8V and a power supply voltage range of 1.6V-3.6V supplies power. For example, in one embodiment, a light-emitting element with a turn-on voltage ranging from 1.6V to 2.4V may be selected as the light-emitting element 11 of the present application.

Specifically, the light-emitting elements 11 are at least divided into two categories, the first category is red LED, yellow LED, orange LED, yellow-green LED, and its forward voltage range is 1.6V-2.4V; the second category is green LED, For blue LEDs and white LEDs, the forward voltage range is higher than 2.6V-3.6V. In order to ensure that the light-emitting element 11 emits light, the light-emitting element 11 of the present application is preferably at least one of red LED, yellow LED, orange LED, and yellow-green LED. In this way, the number of possible puffs can be increased, and the light emitting element 11 can be turned on.

In an embodiment, the power supply device 12 of the present application may be a lithium battery.

Through the drive circuit of the present application, it uses the power supply device 12 with a rated voltage of less than 3.7V for power supply, which can further increase the number of puffs, and set the conduction voltage of the light-emitting element to be no greater than the power supply voltage corresponding to the rated voltage of the power supply device, ensuring When the power supply device 12 with a rated voltage of less than 3.7V supplies power, the light emitting element 11 can emit light.

Please refer to FIG. 2 , which is a schematic structural diagram of an embodiment of the driving circuit of the electronic atomization device shown in FIG. 1 . Specifically, the power supply device 12 is connected to the anode of the light emitting element 11 , and the sensing device 13 is connected to the cathode of the light emitting element 11 . In this way, the sensing device 13 sends a control signal to the circuit where the light emitting element 11 and the power supply device 12 are located, and then adjusts the voltage difference between the two ends of the light emitting element 11 (anode and cathode) to drive the light emitting element 11 to emit light. Specifically, when the control signal sent by the sensing device 13 is at the first level, the light emitting element 11 is not emitting light; when the control signal is at the second level, the light emitting element 11 is emitting light. Wherein, the first level is a logic high state, and the second level is a logic low state.

Further, the driving circuit of this embodiment further includes a resistor R, the first end of the resistor R is connected to the sensing device 13 , and the second end of the resistor R is connected to the cathode of the light emitting element 11 . The resistor R can limit the current flowing to the light emitting element 11 .

The rated voltage of the power supply device 12 in this embodiment is 2.8V, and the power supply voltage corresponding to the rated voltage ranges from 1.6V to 3.6V. The conduction voltage of the light emitting element 11 ranges from 1.6V to 2.4V. The light emitting element 11 described in this embodiment is preferably at least one of red LEDs, yellow LEDs, orange LEDs, and yellow-green LEDs.

In this embodiment, in order to enable the sensing device 13 to work normally, the operating voltage of the sensing device 13 is matched to the power supply voltage range of the power supply device 12 so as to work normally under the power supply voltage provided by the power supply device 12 . That is, the operating voltage of the sensing device 13 cannot exceed the power supply voltage range of the power supply device 12 , otherwise, the power supply voltage of the power supply device 12 will not be sufficient to drive the sensing device 13 to work.

Through the driving circuit of the present application, it uses the power supply device 12 with a rated voltage of less than 3.7V for power supply, which can further increase the number of puffs, and set the conduction voltage of the light-emitting element 11 to be no greater than the power supply voltage corresponding to the rated voltage of the power supply device. It is ensured that the light emitting element 11 can emit light when the power supply device 12 with a rated voltage of less than 3.7V supplies power.

Please refer to FIG. 3 , which is a schematic structural diagram of an embodiment of a sensing device. Specifically, the sensing device 13 includes a sensor 14 and a controller 15 . In a specific embodiment, the sensing device 13 further includes: a base plate 31 and a housing 35 , wherein the base plate 31 has a first air hole 33 for connecting the airway. The sensor 14 is located on the first surface of the substrate 31 and is disposed corresponding to the first air hole 33 . Specifically, one end of the sensor 14 is located on one side of the first air hole 33 , and the other end of the sensor 14 is located on the other side of the first air hole 33 . The housing 35 is located on the first surface of the base plate 31 and is disposed around the sensor 14 and the controller 15 . The housing 35 has a second air hole 34 for connecting to the reference air pressure P0. Wherein, the sensor 14 is electrically connected to the controller 15 through metal wires, and the controller 15 is electrically connected to the substrate 31 through metal wires. In one embodiment, the substrate 31 is a circuit board.

The sensor 14 detects whether there is an airflow change based on the air pressure P of the airway and the reference air pressure P0. When there is a suction action, the air pressure of the airway is P, and the sensor 14 detects the airflow change through the first vent hole 33 as ΔP=P-P0, and the airflow difference ΔP can change the capacitance distance of the sensor 14, so that the capacitance occurs change, and output a detection signal, the controller 15 controls the light emitting element 11 to emit light under the drive of the power supply voltage provided by the power supply device 12 according to the detection signal.

In one embodiment, the sensor 14 and the controller 15 are packaged as an independent component.

In one embodiment, the sensing device is a MEMS sensor. Alternatively, in one embodiment, the sensing device is a microphone.

That is to say, in this embodiment, when the sensor 14 detects the airflow change, it means that the electronic atomization device is being used, and outputs a detection signal. At this time, the controller 15 controls the light-emitting element to be driven by the power supply voltage. glow. In this embodiment, the rated voltage of the power supply device 12 is 2.8V, and the power supply voltage ranges from 1.6V to 3.6V. The conduction voltage of the light emitting element 11 ranges from 1.6V to 2.4V. The light emitting element 11 described in this embodiment is preferably at least one of red LEDs, yellow LEDs, orange LEDs, and yellow-green LEDs.

Through the drive circuit of the present application, it uses the power supply device 12 with a rated voltage of less than 3.7V for power supply, which can further increase the number of puffs, and set the conduction voltage of the light emitting element 11 to be no greater than the rated voltage of the power supply device 12 to ensure that the rated voltage is less than 3.7V. When the power supply device 12 with a voltage lower than 3.7V supplies power, the light emitting element 11 can emit light.

Please refer to FIG. 4 , which is a schematic structural diagram of an embodiment of the electronic atomization device of the present invention. Specifically, the electronic atomization device 90 of the present invention includes the drive circuit 80 of the electronic atomization device of any one of the above-mentioned embodiments. In an embodiment, the driving circuit 80 of the above-mentioned electronic atomization device may be disposed at the end of the battery rod of the electronic atomization device 90 . Alternatively, in another embodiment, the above-mentioned drive circuit 80 of the electronic atomization device may also be disposed at the atomizer end of the electronic atomization device 90 , which is not specifically limited.

The above is only the embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process conversion made by using the description of the present invention and the contents of the accompanying drawings, or directly or indirectly used in other related technical fields, All are included in the scope of patent protection of the present invention in the same way.

Claims

A drive circuit for an electronic atomization device, including:

light emitting element;

A power supply device, connected to the light-emitting element to provide a power supply voltage, wherein the rated voltage of the power supply device is less than 3.7V;

A sensing device is connected to the circuit where the light emitting element and the power supply device are located, so as to control the light emitting element to emit light under the drive of the power supply device;

Wherein, the turn-on voltage of the light emitting element is lower than the power supply voltage corresponding to the rated voltage of the power supply device.
The driving circuit according to claim 1, wherein the sensing device is used to send a control signal to the loop where the light-emitting element and the power supply device are located, so as to adjust the voltage difference between the two ends of the light-emitting element to drive the Whether the light-emitting element emits light; wherein, when the control signal is at the first level, the light-emitting element does not emit light; when the control signal is at the second level, the light-emitting element emits light.
The driving circuit according to claim 2, wherein the first level is a logic high state, and the second level is a logic low state.
The drive circuit according to claim 1, wherein the rated voltage of the power supply device is 2.8V.
The driving circuit according to claim 3, wherein the power supply voltage of the power supply device ranges from 1.6V to 3.6V.
The driving circuit according to claim 4, wherein the turn-on voltage of the light emitting element ranges from 1.6V to 2.4V.
The driving circuit according to claim 1, wherein the light emitting element is at least one of a red LED, a yellow LED, an orange LED, and a yellow-green LED.
The driving circuit according to claim 1, wherein the operating voltage of the sensing device matches the range of the power supply voltage of the power supply device so as to work normally under the power supply voltage provided by the power supply device.
The drive circuit according to claim 1, wherein the power supply device is a lithium battery.
The driving circuit according to claim 1, wherein the sensing device comprises:

A sensor for detecting changes in airflow, and outputting a detection signal when a change in airflow is detected;

The controller is configured to receive the detection signal output by the sensor, so as to control the light emitting element to emit light under the drive of the supply voltage.
The drive circuit according to claim 1, wherein the sensing device is a MEMS sensor.
An electronic atomization device, comprising the driving circuit of the electronic atomization device according to any one of claims 1-11.