WO2020001241A1

WO2020001241A1 - Drive circuit and electronic cigarette

Info

Publication number: WO2020001241A1
Application number: PCT/CN2019/089902
Authority: WO
Inventors: 邱伟华; 樊桂梅
Original assignee: 常州市派腾电子技术服务有限公司; 卓尔悦欧洲控股有限公司
Priority date: 2018-06-29
Filing date: 2019-06-04
Publication date: 2020-01-02
Also published as: CN208488958U

Abstract

A drive circuit and an electronic cigarette, belonging to the field of smoking simulation technology. An electronic cigarette drive circuit comprises at least one driver chip (20) and a display screen (30), and the display screen (30) comprising a plurality of LED lamps (31), wherein: a signal input end of the driver chip (20) is electrically connected to a control unit (10); a signal output end of the driver chip (20) is electrically connected to the display screen (30), and the driver chip (20) drives, according to control signals sent by the control unit (10), the LED lamps (31) in the display screen (30) to turn on or off; the invention solves the problem in the related art that electronic cigarettes have a single prompting mode.

Description

Drive circuit and electronic cigarette

Technical field

The utility model relates to the technical field of electronic circuits, in particular to a driving circuit and an electronic cigarette.

Background technique

As a substitute for cigarettes, e-cigarettes are more and more popular in the market because of their safety, convenience, health, and environmental protection.

At present, the main way for electronic cigarettes to remind users is electronic cigarette vibration. When the electronic cigarette is vibrated, the user needs to combine the electronic cigarette's instructions, working status and other information to determine the corresponding reminder for each vibration. The electronic cigarette's reminding method is too single. For example, vibration occurs during the working process of the electronic cigarette temperature control mode. According to the electronic cigarette in the temperature control mode, the user can determine that the electronic cigarette vibration is used to remind the electronic cigarette to start warming; the user performs a shutdown operation to trigger the electronic cigarette to shut down and vibrate. The user can determine that the vibration of the electronic cigarette is used to remind the electronic cigarette that it is shutting down according to the shutdown operation performed by the user.

Utility model content

In order to solve the problem that the reminder manner of the electronic cigarette is too single, the embodiment of the present invention provides a driving circuit and an electronic cigarette. The technical solution is as follows:

In a first aspect, a driving circuit is provided. The driving circuit includes at least one driving chip and a display screen, and the display screen includes a plurality of light emitting diode (LED) lights, wherein:

The signal input terminal of the driving chip is electrically connected with the control unit;

The driving chip is electrically connected to the display screen, and the driving chip drives the LED light in the display screen to turn on or off according to a control signal sent by the control unit.

Optionally, the display screen includes at least one group of LED lights, and each LED light in each group of LED lights is arranged in a dot matrix manner;

Each group of LED lights corresponds to a driving chip, and each LED lamp in each group of LED lights is electrically connected to the driving chip corresponding to the group of LED lights;

Each driving chip drives the LED light corresponding to each driving chip to turn on or off according to a control signal sent by the control unit.

Optionally, each column of LED lights in each group of LED lights is electrically connected to a control pin in a driving chip corresponding to the group of LED lights;

Each row of LED lights in each group of LED lights is electrically connected to one control pin in the driving chip corresponding to the group of LED lights; the control pins of each row of LED lights and each column of LED lights are electrically connected in the driving chip. .

Optionally, the driving circuit further includes a boosting circuit, a voltage input terminal of the boosting circuit is connected to a power source, and a voltage output terminal of the boosting circuit is connected to a voltage input terminal of the driving chip.

Optionally, the boost circuit includes a boost chip, a voltage input terminal of the boost chip is electrically connected to the power source, a boost pin of the boost chip and a voltage input terminal of the drive chip相连接。 Phase connection.

Optionally, an enable pin of the boost chip is connected to a control pin of the control unit.

According to a second aspect, an electronic cigarette is provided. The electronic cigarette includes the control unit described above, the first aspect, and the driving circuit according to any optional implementation manner of the first aspect.

The beneficial effects brought by the technical solutions provided by the embodiments of the present utility model are:

By providing a driving circuit, the driving circuit includes at least one driving chip and a display screen, and the display screen includes a plurality of LED lights, wherein: the signal input terminal of the driving chip is electrically connected with the control unit; the driving chip is electrically connected with the display screen and drives The chip drives the LED light on or off according to the control signal sent by the control unit. The driving circuit can be used to display the reminder information in the display screen of the electronic cigarette, which solves the problem that the reminder method of the electronic cigarette in the related technology is too single and achieves The effect of enriching the e-cigarette reminding method has been increased.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to explain the technical solutions in the embodiments of the present invention more clearly, the drawings used in the description of the embodiments are briefly introduced below. Obviously, the drawings in the following description are just some implementations of the present invention. For example, for those of ordinary skill in the art, other drawings can be obtained based on these drawings without paying creative labor.

FIG. 1 is a connection schematic diagram of a driving circuit provided by an embodiment of the present invention;

2 is a schematic diagram of a pin of a display screen provided by an embodiment of the present invention;

3 is a schematic diagram of a circuit of a driving chip according to an embodiment of the present invention;

4 is a schematic diagram of a booster circuit provided by an embodiment of the present invention;

FIG. 5 is a schematic diagram of pins of a control unit in an electronic cigarette according to an embodiment of the present invention.

detailed description

In order to make the purpose, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

Please refer to FIG. 1, which illustrates a connection schematic diagram of a driving circuit provided by an embodiment of the present invention. As shown in FIG. 1, the driving circuit includes at least one driving chip 20 and a display screen 30. The display screen 30 includes a plurality of LED lights 31, where:

The signal input terminal of the driving chip is electrically connected to the control unit 10;

The signal output terminal of the driving chip is electrically connected with the display screen, and the driving chip drives the LED light in the display screen to turn on or off according to the control signal sent by the control unit.

For example, please refer to FIG. 3 and FIG. 5. FIG. 3 is a schematic diagram of a circuit including a driving chip. FIG. 5 is a pin diagram of the control unit U1. The TXD pin of the control unit U1 (for example, PA0 / UART_TXD / PWM1_CH5) Pin) is connected to the SDB pin of the driver chip (U2 and U4); the RXD pin (for example, PA1 / UART_RXD / PWM1_CH4 pin) of the control unit U1 is connected to the ITNB pin of the driver chip; the SDA of the control unit U1 The pin (for example, PA2 / I2C0_SDA pin) is connected to the SDA pin of the driver chip; the SCL pin of the control unit U1 (for example, PA3 / I2C0_SCL pin) is connected to the SCL pin of the driver chip; please refer to the figure 2. Fig. 2 is a pin diagram of the display screen, and the driving chip is electrically connected to the display screen.

By providing a driving circuit, the driving circuit includes at least one driving chip and a display screen, the display screen includes a plurality of LED lights, wherein: the signal input terminal of the driving chip is electrically connected with the control unit; the driving chip is electrically connected with the display screen, The driving chip drives the LED light on or off according to the control signal sent by the control unit. The driving circuit can be used to display the reminder information on the display screen of the electronic cigarette, which solves the problem that the reminder method of the electronic cigarette in the related technology is too single. The effect of rich e-cigarette reminding methods has been achieved.

Optionally, the SYNC pins of all the driving chips in the driving circuit are electrically connected.

Each group of LED lights uniquely corresponds to a driving chip, and each LED light in each group of LED lights is electrically connected to the driving chip corresponding to the group of LED lights; each driving chip drives each of the driving chips according to a control signal sent by the control unit. The corresponding LED light of the driving chip is on or off.

For example, as shown in FIG. 1, the display screen includes two sets of LED lights, one set of LED lights is disposed in the first partition 32 of the display screen, and the other LED light is disposed in the second partition 33. It is arranged in a dot matrix, and each group of LEDs is arranged in 6 rows and 12 columns. Each group of LED lights uniquely corresponds to a driving chip, and each driving chip is electrically connected to each of its corresponding LEDs; each driving chip drives each driving chip's corresponding LED light to turn on or off according to a control signal sent by the control unit.

In actual implementation, the display screen may include only a group of LED lights and a driving chip for driving the group of LED lights, and may also include 3 or more groups of LED lights. And when more or fewer groups of LED lights are included, correspondingly more or less driving chips are included, and the connection relationship between each driving chip and the corresponding group of LED lights is similar to FIG. 3, and there is no more here To repeat.

Optionally, the connection method of any group of LED lights and the corresponding driving chip may be: each group of LED lights corresponds to one driving chip, and each of the LED lights in each group corresponds to the corresponding group of LED lights. A control pin in the driving chip is electrically connected; each row of LED lights in each group of LED lights is electrically connected with a control pin in the driving chip corresponding to the group of LED lights. It should be noted that the control pins of each row of LED lights in the same group of LED lights and each column of LED lights are electrically connected in the corresponding driving chip of the group.

Optionally, each group of LED lights is distributed in m rows and n columns. Optionally, m = 6 and n = 12; or m = 12 and n = 6. In this embodiment, each group of LED lights is described in m rows and n columns. In actual implementation, at least one group of LED lights may have less than m rows or less than n rows in each group of LED lights on the display screen. A group of LED lights are distributed in m rows and n columns.

For example, as shown in Figure 2 is a pin diagram of the display screen, the display screen includes two groups of LED lights, as shown in Figure 3, the drive circuit includes two drive chips (labeled U2 in Figure 3 , U4). The driving chip U2 corresponds to the first group of LED lights in the display screen, and the driving chip U4 corresponds to the second group of LED lights in the display screen. Among them, one row of LED lights in the same group of LED lights is electrically connected to one pin of the display, and the pin of the display is electrically connected to the control pin of the driving chip corresponding to the row of LED lights; one row of LED lights in the same group is connected to one of the displays. The pins are electrically connected, and this pin of the display is connected to the control pin of the driving chip corresponding to the LED lights in the column.

Take the display screen with two sets of LED lights, each group of LED lights are distributed in 12 rows and 16 columns for illustration. As shown in Figure 2, the display screen has 56 pins, each pin of the display screen uniquely corresponds to a row or column of LED lights in a group of LEDs, and the LED lights in the same group or the same column in the same group correspond to the corresponding display pins. Connection, each display pin is connected to a control pin of the driver chip. For example, please refer to FIG. 2 and FIG. 3, the first row of LED lights in the first group are connected to the first pin of the display, and the first pin of the display is connected to the 36th pin of the driver chip U2. connection. For another example, the first row of LED lights in the second group are connected to the 42nd pin of the display, and the 42nd pin of the display is connected to the 2nd pin of the driving chip U2.

Optionally, the driving circuit further includes a booster circuit. The voltage input terminal of the booster circuit is connected to the power source. The voltage output terminal of the booster circuit is connected to the voltage input terminal of the drive chip. The voltage is provided to the driver chip.

Optionally, the boost circuit includes a boost chip, a voltage input terminal of the boost chip is electrically connected to a power source, and a boost pin of the boost chip is connected to a voltage input terminal of the driving chip.

Please refer to FIG. 4. The pin connection relationship of the boost chip U16 may be: the VIN pin (that is, the voltage input end) of the boost chip is connected to the power source VCC_BAR in the electronic cigarette, and the boost pin of the boost chip ( That is, the BST pin) is connected to the voltage input terminal (ie, the VIN pin) of the driving chip.

Optionally, a conversion pin (ie, a SW pin) is provided on the boost chip, and a capacitor is connected between the SW pin and the BST pin. Optionally, the value of this capacitor is 0.1uf.

Optionally, an enable pin (ie, an EN pin) on the boost chip is connected to a control pin of the control unit U1. The control unit controls the boosting chip to perform or stop the boosting operation by controlling the control pin to output a high or low level. For example, when the control unit controls the control pin to output a high level, the boost chip performs a boost operation; when the control unit controls the control pin to output a low level, the boost chip stops the boost operation.

Optionally, the SW pin of the boost chip is connected to one end of the first inductor L6, and the other end of the first inductor L6 is connected to the VIN pin of the driving chip; a VIN pin of the driving chip is connected to the ground Three capacitors, which are connected in parallel.

Optionally, the FB pin connection of the boost chip is connected to one end of the first resistor R34, and a first capacitor C77 and a second resistor R81 are connected between the first resistor R34 and the other end of the first inductor L6. The two resistors R81 are connected in parallel with the first capacitor C77, and a third resistor R82 is connected between the other end of the first resistor R34 and the ground.

Optionally, a second capacitor C24 and a third capacitor C48 are connected between the VIN pin and the GND pin of the boost chip, the second capacitor C24 and the third capacitor C48 are connected in parallel, and the GND pin of the boost chip is grounded.

The utility model further provides an electronic cigarette, which includes the driving circuit, the control unit, and the power supply according to any one of the foregoing embodiments. Among them, the power source in the electronic cigarette may be a battery, an energy storage unit, and the like.

The above serial numbers of the embodiments of the present utility model are only for description, and do not represent the advantages and disadvantages of the embodiments.

A person of ordinary skill in the art may understand that all or part of the steps for implementing the foregoing embodiments may be implemented by hardware, or may be instructed by a program to complete related hardware. The program may be stored in a computer-readable storage medium. The storage medium mentioned may be a read-only memory, a magnetic disk or an optical disk.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included in the present invention. Within the scope of protection of utility models.

Claims

A driving circuit, wherein the driving circuit includes at least one driving chip and a display screen, and the display screen includes a plurality of LED lights, wherein:

The signal input terminal of the driving chip is electrically connected with the control unit;

A signal output terminal of the driving chip is electrically connected to the display screen, and the driving chip drives an LED light in the display screen to turn on or off according to a control signal sent by the control unit.
The driving circuit according to claim 1, wherein the display screen comprises at least one group of LED lights, and each LED light in each group of LED lights is arranged in a dot matrix manner;

Each group of LED lights corresponds to a driving chip, and each LED lamp in each group of LED lights is electrically connected to the driving chip corresponding to the group of LED lights;

Each driving chip drives the LED lamp corresponding to the driving chip to turn on or off according to a control signal sent by the control unit.
The driving circuit according to claim 2, wherein:

Each column of LED lights in each group of LED lights is electrically connected to a control pin in a driving chip corresponding to the group of LED lights;

Each row of LED lights in each group of LED lights is electrically connected to one control pin in the driving chip corresponding to the group of LED lights; the control pins of each row of LED lights and each column of LED lights are electrically connected in the driving chip different.
The driving circuit according to claim 1, wherein the driving circuit further comprises a booster circuit, a voltage input terminal of the booster circuit is connected to a power source, and a voltage output terminal of the booster circuit is connected to the voltage source. The voltage input terminals of the driving chip are connected.
The driving circuit according to claim 4, wherein the booster circuit includes a booster chip, a voltage input terminal of the booster chip is electrically connected to the power source, and the booster chip of the booster chip is The pin is connected to a voltage input terminal of the driving chip.
The driving circuit according to claim 5, wherein an enable pin of the boost chip is connected to a control pin of the control unit.
An electronic cigarette, characterized in that the electronic cigarette includes the driving circuit and the control unit according to any one of claims 1 to 6.