CN109185921B - High-integration electronic cigarette lighter chip - Google Patents
High-integration electronic cigarette lighter chip Download PDFInfo
- Publication number
- CN109185921B CN109185921B CN201811103954.XA CN201811103954A CN109185921B CN 109185921 B CN109185921 B CN 109185921B CN 201811103954 A CN201811103954 A CN 201811103954A CN 109185921 B CN109185921 B CN 109185921B
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- Prior art keywords
- chip
- switch
- charging
- pole
- circuit
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q7/00—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs
- F23Q7/14—Portable igniters
- F23Q7/16—Portable igniters with built-in battery
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q7/00—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs
- F23Q7/22—Details
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The application relates to the technical field of cigars, in particular to a high-integration electronic cigar lighter chip, which comprises a chip body, a USB port connected with the chip body, an electric heating wire connected with the chip body, an indicator lamp connected with the chip body, a lithium battery connected with the chip body and a key connected with the chip body. The application integrates the charging chip, the singlechip chip and the MOS switch chip into one chip, realizes miniaturized packaging, and ensures that the whole circuit scheme is very simple and compact, thereby improving the capacity of the lithium battery, prolonging the service time and greatly reducing the cost; the switch driving module and the NMOS switch are adopted in the chip to realize the opening and closing of the discharge switch, so that the on-resistance of the switch is greatly reduced, the damage to the chip is reduced, the heating is reduced, and the reliability is improved.
Description
Technical Field
The application relates to the technical field of cigar lighter, in particular to a high-integration electronic cigar lighter chip.
Background
Cigar lighter, like lighter and electron cigarette etc. all constitute by electronic switch and liquefied gas (oil) traditionally, but reuse nature is poor, and belongs to inflammable and explosive article, has the potential safety hazard.
With the deep and widespread industrialization of lithium batteries, more and more devices employ lithium batteries as energy sources. In particular, after the volume of the polymer lithium battery has been miniaturized, it is possible to use the lithium battery as an energy source on a cigar lighter. And the lithium battery can be charged and discharged repeatedly, and the charging interface is compatible with the microUSB, so that the charging is convenient.
Existing internal structural components of electronic cigarette lighters include: lithium battery, heating wire, circuit board, shell, etc. Due to the small internal space, the volume requirements for the components are very stringent, and the functions must be specific. The traditional cigar lighter comprises a charging chip, an MCU singlechip main control chip and an MOS switch chip, and is high in cost and large in occupied area, and under the same shell, the capacity of a lithium battery can only be occupied, so that the service time after each charging is shortened.
Disclosure of Invention
Aiming at the problems existing in the prior art, the application provides a high-integration electronic cigar lighter chip.
The technical scheme adopted for solving the technical problems is as follows: a high-integration electronic cigar lighter chip comprises a chip body, a USB port connected with the chip body, an electric heating wire connected with the chip body, an indicator lamp connected with the chip body, a lithium battery connected with the chip body and a key connected with the chip body.
Preferably, the chip body is provided with a KEY end connected with the KEY, an LED end connected with the indicator lamp, a VIN end connected with the USB port, an AT end connected with the heating wire, a BAT end connected with the lithium battery, and a charging circuit and a discharging circuit inside the chip body.
Preferably, the charging circuit comprises a charging PMOS switch, a trickle/constant current/constant voltage charging control module connected with a G pole of the charging PMOS switch, a chip temperature detection circuit and a charging current setting module connected with the trickle/constant current/constant voltage charging control module, and a PMOS switch substrate control module connected with a charging PMOS switch substrate, wherein a S pole of the charging PMOS switch is connected with a VIN end, a D pole of the charging PMOS switch is connected with a BAT end, and the charging current setting module is connected with an ISET end of the chip body.
Preferably, the VIN end is also connected with the positive input end of a first comparator, the negative input end of the first comparator is connected with a 3.3V power supply, and the output end of the first comparator is connected with the trickle/constant current/constant voltage charging control module.
Preferably, the BAT end is also connected with the positive electrode input end of a second comparator, the negative electrode input end of the second comparator is connected with a 3V/4.2V power supply, and the output end of the second comparator is connected with the trickle/constant current/constant voltage charging control module.
Preferably, the trickle/constant current/constant voltage charging control module comprises a charging PMOS switch on/off control circuit and a trickle/constant current/constant voltage charging control circuit.
Preferably, the PMOS switch substrate control module includes a parasitic diode.
Preferably, the discharging circuit comprises a discharging NMOS switch, a switch driving module connected with a G pole of the discharging NMOS switch, a control logic module connected with the switch driving module, a temperature voltage detection circuit connected with the control logic module, an overcurrent detection circuit connected with the control logic module, and an NMOS switch substrate control module connected with a discharging NMOS switch substrate, wherein the overcurrent detection circuit is connected with an S pole of the discharging NMOS switch, a D pole of the discharging NMOS switch is connected with the BAT end, and the S pole of the discharging NMOS switch is also connected with the AT end.
Preferably, the switch driving module comprises an adding circuit and a single-pole double-throw switch connected with the G pole of the discharging NMOS switch, the adding circuit comprises two adding circuit input ends, the two adding circuit input ends are connected with the BAT end, and the single-pole double-throw switch is connected with the output end of the adding circuit or the ground end.
Preferably, the NMOS switch substrate control module includes a parasitic diode, and the control logic module includes a microprocessor.
The application has the beneficial effects that the charging chip, the singlechip chip and the MOS switch chip are integrated into one chip, so that the miniaturization packaging is realized, the whole circuit scheme is very simple and compact, the capacity of the lithium battery is improved, the service time is prolonged, and the cost is greatly reduced; the switch driving module and the NMOS switch are adopted in the chip to realize the opening and closing of the discharge switch, so that the on-resistance of the switch is greatly reduced, the damage to the chip is reduced, the heating is reduced, and the reliability is improved.
Drawings
FIG. 1 is a block diagram of a high integration electronic cigarette lighter chip according to the present application;
FIG. 2 is a circuit diagram of the interior of the chip body of FIG. 1;
FIG. 3 is a flowchart of the operation of the chip of FIG. 1;
FIG. 4 is a circuit diagram of the switch driving module of FIG. 2;
FIG. 5 is a trickle/constant current/constant voltage charge state diagram for a lithium battery;
the LED chip comprises a chip body, a USB port, an electric heating wire, an indicator lamp, a lithium battery, a button and a button, wherein the chip body comprises a chip body, a USB port, an electric heating wire, an indicator lamp, a lithium battery and buttons.
Detailed Description
The technical scheme of the application is further described below by the specific embodiments with reference to the accompanying drawings.
As shown in fig. 1 to 5, a high-integration electronic cigar lighter chip comprises a chip body 1, a USB port 2 connected with the chip body 1, an electric heating wire 3 connected with the chip body 1, an indicator lamp 4 connected with the chip body 1, a lithium battery 5 connected with the chip body 1, and a key 6 connected with the chip body 1. The USB port 2 is used for charging the electronic cigarette lighter, and when the key 6 of the electronic cigarette lighter is pressed down, the lithium battery 5 supplies power to the heating wire 3 to heat the heating wire, so that cigarette lighting is realized.
The chip body 1 is provided with a KEY end connected with the KEY 6, an LED end connected with the indicator lamp 4, a VIN end connected with the USB port 2, an AT end connected with the heating wire 3, a BAT end connected with the lithium battery 5, and a charging circuit and a discharging circuit inside the chip body 1.
The charging circuit comprises a charging PMOS switch, a trickle/constant current/constant voltage charging control module connected with a G pole of the charging PMOS switch, a chip temperature detection circuit and a charging current setting module connected with the trickle/constant current/constant voltage charging control module, and a PMOS switch substrate control module connected with a charging PMOS switch substrate, wherein the S pole of the charging PMOS switch is connected with a VIN end, the D pole of the charging PMOS switch is connected with a BAT end, and the charging current setting module is connected with an ISET end of the chip body 1. The PMOS switch substrate control module comprises a parasitic diode, wherein the positive electrode of the parasitic diode is connected with the D electrode of the charging PMOS switch, and the negative electrode of the parasitic diode is connected with the S electrode of the charging PMOS switch.
The VIN end is also connected with the positive input end of the first comparator, the negative input end of the first comparator is connected with a 3.3V power supply, and the output end of the first comparator is connected with the trickle/constant current/constant voltage charging control module. The BAT end is also connected with the positive electrode input end of a second comparator, the negative electrode input end of the second comparator is connected with a 3V/4.2V power supply, and the output end of the second comparator is connected with the trickle/constant current/constant voltage charging control module. The trickle/constant current/constant voltage charging control module comprises a charging PMOS switch on/off control circuit and a trickle/constant current/constant voltage charging control circuit.
The charging input voltage of the VIN end can be detected through the first comparator, the lithium battery voltage of the BAT end can be detected through the second comparator, when the charging input voltage is larger than the lithium battery voltage, the charging PMOS switch on/off control circuit controls the PMOS switch to be on, otherwise, the PMOS switch is controlled to be off, and the charging PMOS switch on/off control circuit adopts a circuit in the prior art.
The level of the lithium battery voltage can also be detected by the second comparator, and when the lithium battery voltage is less than 3V, the trickle/constant current/constant voltage charging control circuit controls the lithium battery 5 to carry out small current trickle charging so as to protect the overdischarged lithium battery 5. When the voltage is higher than 3V, the trickle/constant current/constant voltage charging control circuit controls the lithium battery 5 to carry out high-current constant current rapid charging. When the voltage reaches 4.2V, the trickle/constant current/constant voltage charging control circuit controls the lithium battery 5 to perform constant voltage charging, the charging voltage is maintained at 4.2V, and the charging current is automatically and gradually reduced to avoid overcharging. Wherein the trickle/constant current/constant voltage charge control circuit adopts a circuit in the prior art.
The chip temperature detection circuit can collect the temperature of the chip in real time, when the temperature of the chip is larger than a certain value, the trickle/constant current/constant voltage charging control circuit can control the lithium battery 5 to carry out small-current trickle charging, namely, when the trickle/constant current/constant voltage charging control circuit controls the lithium battery 5 to carry out normal trickle/constant current/constant voltage charging, the condition that the temperature of the chip is smaller than a preset value is required to be met, otherwise, the chip can automatically enter a small-current trickle charging mode, the charging current can be automatically reduced, and the chip can be prevented from being overheated and damaged. Wherein, the chip temperature detection circuit adopts a circuit in the prior art.
The charging current setting module sets a preset current value during constant-current charging through an ISET end, the current value during trickle charging of the lithium battery 5 is one tenth of the preset current value, the lowest current value during constant-voltage charging of the lithium battery 5 is also one tenth of the preset current value, and the charging current setting module feeds back the set current values of three charging states to the trickle/constant-current/constant-voltage charging control circuit so that the trickle/constant-current/constant-voltage charging control circuit controls the lithium battery 5 to realize charging in different states.
The discharging circuit comprises a discharging NMOS switch, a switch driving module connected with a G pole of the discharging NMOS switch, a control logic module connected with the switch driving module, a temperature and voltage detection circuit connected with the control logic module, an overcurrent detection circuit connected with the control logic module, and an NMOS switch substrate control module connected with a discharging NMOS switch substrate, wherein the overcurrent detection circuit is connected with an S pole of the discharging NMOS switch, a D pole of the discharging NMOS switch is connected with a BAT end, and the S pole of the discharging NMOS switch is also connected with an AT end. The NMOS switch substrate control module comprises a parasitic diode, wherein the positive electrode of the parasitic diode is connected with the S pole of the discharge NMOS switch, and the negative electrode of the parasitic diode is connected with the D pole of the discharge NMOS switch.
The discharging NMOS switch is responsible for turning on the lithium battery 5 and the heating wire 3, thereby igniting the heating wire 3. The switch driving module is responsible for fully conducting the discharging NMOS switch so as to reduce the on resistance and the loss of the discharging NMOS switch. The switch driving module comprises an addition circuit and a single-pole double-throw switch connected with the G pole of the discharging NMOS switch, the addition circuit comprises two addition circuit input ends, the two addition circuit input ends are connected with the BAT end, and the single-pole double-throw switch is connected with the output end of the addition circuit or the ground end through an ON signal (namely whether a key is pressed). The adding circuit is a circuit in the prior art, the output end of the adding circuit is twice the voltage of the lithium battery, and when the key 6 is pressed down, the single-pole double-throw switch is connected with the output end of the adding circuit, so that the G pole of the discharging NMOS switch has twice the voltage of the lithium battery, and the discharging NMOS switch is fully conducted, thereby reducing the on resistance and the loss. When the key 6 is released, the single-pole double-throw switch is connected with the ground end, so that the G pole voltage of the discharging NMOS switch is zero, and the discharging NMOS switch is cut off.
The control logic module is responsible for receiving signals from each detection circuit and the states of the external keys, making a decision of turning on or off the discharge NMOS switch after processing, and driving the external indicator lamp 4 to indicate various states of the chip. The control logic module comprises a microprocessor which is electrically connected with the single-pole double-throw switch. The microprocessor is connected with the KEY end and the LED end.
The temperature voltage detection circuit is responsible for detecting the voltage of the lithium battery and the temperature of the chip, and when the voltage of the lithium battery is too low or the temperature of the chip exceeds a set value, the temperature voltage detection circuit can send an alarm signal to the control logic module, and the control logic module can control the indicator lamp 4 to be on for alarm, otherwise, the indicator lamp 4 is off. The temperature and voltage detection circuit adopts a circuit in the prior art, and the temperature and voltage detection circuit is connected with the BAT end.
The overcurrent detection circuit is responsible for monitoring the current flowing through the discharge NMOS switch in real time, and if the current is larger than a set value, signals are timely sent to the control logic module, so that the control logic module controls the discharge NMOS switch to be disconnected, and the chip is prevented from being damaged by large current caused by abnormal operations such as output short circuit and the like, and even a lithium battery is avoided. Wherein, the overcurrent detection circuit adopts a circuit in the prior art.
When the application is charged, the input voltage can be normally charged when the input voltage is effective; when discharging (namely when igniting the cigarette), the cigarette can be normally ignited as long as the key is pressed and no overcurrent phenomenon exists. The electronic cigarette lighter can charge and discharge simultaneously, and the independent work of charging and discharging can be realized, so that the electronic cigarette lighter can discharge during charging, and the work is flexible.
The above examples are only illustrative of the preferred embodiments of the present application and do not limit the spirit and scope of the present application. Various modifications and improvements of the technical scheme of the present application will fall within the protection scope of the present application without departing from the design concept of the present application, and the technical content of the present application is fully described in the claims.
Claims (6)
1. High integration electronic cigar lighter chip, its characterized in that: comprises a chip body (1), a USB port (2) connected with the chip body (1), an electric heating wire (3) connected with the chip body (1), an indicator lamp (4) connected with the chip body (1), a lithium battery (5) connected with the chip body (1) and a key (6) connected with the chip body (1);
the chip body (1) is provided with a KEY end connected with the KEY (6), an LED end connected with the indicator lamp (4), a VIN end connected with the USB port (2), an AT end connected with the heating wire (3), a BAT end connected with the lithium battery (5), and a charging circuit and a discharging circuit inside the chip body (1);
the discharging circuit comprises a discharging NMOS switch, a switch driving module connected with a G pole of the discharging NMOS switch, a control logic module connected with the switch driving module, a temperature and voltage detection circuit connected with the control logic module, an overcurrent detection circuit connected with the control logic module and an NMOS switch substrate control module connected with a discharging NMOS switch substrate, wherein the overcurrent detection circuit is connected with an S pole of the discharging NMOS switch, a D pole of the discharging NMOS switch is connected with the BAT end, and the S pole of the discharging NMOS switch is also connected with the AT end;
the switch driving module comprises an addition circuit and a single-pole double-throw switch connected with the G pole of the discharging NMOS switch, the addition circuit comprises two addition circuit input ends, the two addition circuit input ends are connected with the BAT end, and the single-pole double-throw switch is connected with the output end of the addition circuit or the ground end;
the NMOS switch substrate control module comprises a parasitic diode, and the control logic module comprises a microprocessor.
2. The high integration electronic cigarette lighter chip of claim 1, wherein: the charging circuit comprises a charging PMOS switch, a trickle/constant current/constant voltage charging control module connected with a G pole of the charging PMOS switch, a chip temperature detection circuit and a charging current setting module connected with the trickle/constant current/constant voltage charging control module, and a PMOS switch substrate control module connected with a charging PMOS switch substrate, wherein the S pole of the charging PMOS switch is connected with a VIN end, the D pole of the charging PMOS switch is connected with a BAT end, and the charging current setting module is connected with an ISET end of the chip body (1).
3. The high integration electronic cigarette lighter chip of claim 2, wherein: the VIN end is also connected with the positive input end of the first comparator, the negative input end of the first comparator is connected with a 3.3V power supply, and the output end of the first comparator is connected with the trickle/constant current/constant voltage charging control module.
4. The high integration electronic cigarette lighter chip of claim 2, wherein: the BAT end is also connected with the positive electrode input end of a second comparator, the negative electrode input end of the second comparator is connected with a 3V/4.2V power supply, and the output end of the second comparator is connected with the trickle/constant current/constant voltage charging control module.
5. The high integration electronic cigarette lighter chip of claim 2, wherein: the trickle/constant current/constant voltage charging control module comprises a charging PMOS switch on/off control circuit and a trickle/constant current/constant voltage charging control circuit.
6. The high integration electronic cigarette lighter chip of claim 2, wherein: the PMOS switch substrate control module includes a parasitic diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811103954.XA CN109185921B (en) | 2018-09-21 | 2018-09-21 | High-integration electronic cigarette lighter chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811103954.XA CN109185921B (en) | 2018-09-21 | 2018-09-21 | High-integration electronic cigarette lighter chip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109185921A CN109185921A (en) | 2019-01-11 |
| CN109185921B true CN109185921B (en) | 2023-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811103954.XA Active CN109185921B (en) | 2018-09-21 | 2018-09-21 | High-integration electronic cigarette lighter chip |
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| CN (1) | CN109185921B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114190612A (en) * | 2021-09-29 | 2022-03-18 | 上海芯圣电子股份有限公司 | Electron cigarette chip with motor drive |
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Address after: C306, Chuangye Building, Huazhong Yuan, No. 225 Chaoyang New Street, Chashan Street, Ouhai District, Wenzhou City, Zhejiang Province, 325006 Applicant after: WENZHOU CHENG XIN ELECTRONICS Co.,Ltd. Address before: Room 1201, 1202, and 1203, Building 2, Incubator, University Science Park, No. 38 Dongfang Road, Ouhai District, Wenzhou City, Zhejiang Province, 325006 Applicant before: WENZHOU CHENG XIN ELECTRONICS Co.,Ltd. |
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