CN104770884B - Electronic cigarette control chip and electronic cigarette - Google Patents
Electronic cigarette control chip and electronic cigarette Download PDFInfo
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- CN104770884B CN104770884B CN201510077393.0A CN201510077393A CN104770884B CN 104770884 B CN104770884 B CN 104770884B CN 201510077393 A CN201510077393 A CN 201510077393A CN 104770884 B CN104770884 B CN 104770884B
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- oxide
- metal
- semiconductor
- electronic cigarette
- control chip
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- 239000003571 electronic cigarette Substances 0.000 title claims abstract description 199
- 238000001514 detection method Methods 0.000 claims abstract description 16
- 239000004065 semiconductor Substances 0.000 claims description 211
- 239000000758 substrate Substances 0.000 claims description 15
- 235000019504 cigarettes Nutrition 0.000 claims description 13
- 230000005611 electricity Effects 0.000 claims description 12
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 36
- 229910052744 lithium Inorganic materials 0.000 abstract description 36
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 241000208125 Nicotiana Species 0.000 description 3
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 3
- 239000003595 mist Substances 0.000 description 3
- SNICXCGAKADSCV-JTQLQIEISA-N (-)-Nicotine Chemical compound CN1CCC[C@H]1C1=CC=CN=C1 SNICXCGAKADSCV-JTQLQIEISA-N 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229960002715 nicotine Drugs 0.000 description 2
- SNICXCGAKADSCV-UHFFFAOYSA-N nicotine Natural products CN1CCCC1C1=CC=CN=C1 SNICXCGAKADSCV-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- A24F47/008—
-
- H02J7/0091—
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses electronic cigarette control chip and electronic cigarette, open at the SW ends that electronic cigarette control chip is detected by working state control module, or whether the voltage of OUT terminal is more than the internal oscillator started during the voltage of its vdd terminal and voltage reference module and electronic cigarette control chip is started working, then detect whether the voltage of the OUT terminal is more than the voltage of its vdd terminal by working state control module；If so, then judging electronic cigarette control chip for mode of operation；If it is not, judging electronic cigarette control chip for charge mode, the different working condition of accurate detection electronic cigarette control chip is realized, it is according to its mode of operation of working state control.And it is more than the temperature spot of its inner setting in the temperature for detecting electronic cigarette control chip, is stopped immediately, prevents that lithium battery temperature is too high.
Description
Technical field
The present invention relates to electronic cigarette technical field, more particularly to a kind of electronic cigarette control chip and electronic cigarette.
Background technology
Electronic cigarette is a new cigarette substitute products, and it supplies energy to atomizer by internal lithium battery, allows mist
Change device heating tobacco tar（Contain nicotine in tobacco tar）It is atomized tobacco tar.User obtains after the smog of suction electronic cigarette atomizing
Nicotine in similar cigarette, while avoiding sucking the harmful substance such as tar, carbon monoxide for producing after cigarette combustion.Electronic cigarette
Control chip can carry out management of charging and discharging to electronic cigarette inside lithium battery, and driving atomizer is heated, and meets the suction of smoker
Cigarette is experienced, it is ensured that healthy.
, usually can be because the charging current of electronic cigarette control chip is too low or charging current is unstable in present electronic cigarette
It is fixed, cause control chip long to the charging interval of lithium battery.And because the discharge current of electronic cigarette control chip is too low, driving mist
Change device underpower etc., cause amount of smoke low.
In addition, the stand-by power consumption of existing electronic cigarette control chip is higher, and because electronic cigarette is chronically at standby work as
In, stand-by power consumption is accumulated for a long time, and the loss of larger electricity can be also carried out to the lithium battery of limited capacity.
Thus prior art could be improved and improve.
The content of the invention
In view of in place of above-mentioned the deficiencies in the prior art, it is an object of the invention to provide a kind of electronic cigarette control chip and electricity
Sub- cigarette, can detect the different working condition of electronic cigarette control chip, and it is according to its mode of operation of working state control.
In order to achieve the above object, this invention takes following technical scheme：
A kind of electronic cigarette control chip, it includes：
For detecting whether the SW ends of electronic cigarette control chip open, and detect the electricity of the OUT terminal of electronic cigarette control chip
Working state control module of the pressure more than the voltage of its vdd terminal；
When whether the voltage for the SW ends unlatching when electronic cigarette control chip, or OUT terminal is more than the voltage of its vdd terminal
The internal oscillator and voltage reference module of startup；
For the charged state control module for controlling electronic cigarette control chip to be charged to external cell；
For the holding state judge module for the holding state for controlling electronic cigarette control chip；
For when electronic cigarette control chip temperature is higher than preset temperature, the temperature that is stopped of control electronic cigarette control chip
Spend protection module；
The first input end of the working state control module connects the SW ends of electronic cigarette control chip, the working condition
The OUT terminal of the first output end connection electronic cigarette control chip of control module and LED ends, the second of working state control module are defeated
Go out the first input end of end connection holding state judge module, the second of temperature protection module connection holding state judge module is defeated
Enter end, the output end of holding state judge module connects working state control module by internal oscillator and voltage reference module
The first input end of second input and charged state control module, the second input connection of the charged state control module
The OUT terminal of electronic cigarette control chip, the first output end of charged state control module connects the LED ends of electronic cigarette control chip,
Second output end of charged state control module connects the first input end of holding state judge module.
In described electronic cigarette control chip, the working state control module include first comparator, the first metal-oxide-semiconductor,
First phase inverter and the second metal-oxide-semiconductor, the negative input end of the first comparator connect the vdd terminal of electronic cigarette control chip, first
The positive input terminal of comparator connects the OUT terminal of electronic cigarette control chip, and the output end of the first comparator connects the first metal-oxide-semiconductor
Grid, the source electrode of the first metal-oxide-semiconductor connects the internal electric source of electronic cigarette control chip, and the drain electrode of the first metal-oxide-semiconductor connects the VDD
End, the substrate of the first metal-oxide-semiconductor connects the grid of the second metal-oxide-semiconductor, the source electrode connection electronic cigarette of the second metal-oxide-semiconductor by the first phase inverter
The internal electric source of control chip, the drain electrode of the second metal-oxide-semiconductor connects the vdd terminal.
In described electronic cigarette control chip, first metal-oxide-semiconductor and the second metal-oxide-semiconductor are P-channel metal-oxide-semiconductor.
In described electronic cigarette control chip, the charged state control module include the second comparator, the 3rd comparator,
3rd metal-oxide-semiconductor, the 4th metal-oxide-semiconductor, the 5th metal-oxide-semiconductor and resistance, the drain electrode of the 3rd metal-oxide-semiconductor and the drain electrode of the 4th metal-oxide-semiconductor connect
The OUT terminal of electronic cigarette control chip is connect, the substrate of the 3rd metal-oxide-semiconductor connects the grid of the 4th metal-oxide-semiconductor, the 3rd metal-oxide-semiconductor
Source electrode connect the positive input terminal of the second comparator, the positive pole of external cell also connected by the vdd terminal of electronic cigarette control chip,
The source electrode of 4th metal-oxide-semiconductor connects the negative input end of the second comparator and the source electrode of the 5th metal-oxide-semiconductor, second comparator
Output end connects the grid of the 5th metal-oxide-semiconductor, and the drain electrode of the 5th metal-oxide-semiconductor passes through resistance eutral grounding, the positive input of the 3rd comparator
The internal reference voltage end of end connection electronic cigarette control chip, the negative input end of the 3rd comparator passes through the resistance eutral grounding, institute
The output end for stating the 3rd comparator connects the grid of the 3rd metal-oxide-semiconductor.
In described electronic cigarette control chip, the 3rd metal-oxide-semiconductor, the 4th metal-oxide-semiconductor, the 5th metal-oxide-semiconductor are P-channel MOS
Pipe.
In described electronic cigarette control chip, the electronic cigarette control chip also includes short-circuit detecting module, with electronic cigarette
The OUT terminal connection of control chip, the short-circuit detecting module includes：6th metal-oxide-semiconductor, the 7th metal-oxide-semiconductor, the 8th metal-oxide-semiconductor, the 9th
Metal-oxide-semiconductor, the tenth metal-oxide-semiconductor, the 11st metal-oxide-semiconductor, the 12nd metal-oxide-semiconductor and the second phase inverter, the grid of the 6th metal-oxide-semiconductor and drain electrode
Connect the REFI ends of electronic cigarette control chip, the source electrode of the 6th metal-oxide-semiconductor, the source electrode of the 7th metal-oxide-semiconductor, the source electrode of the 8th metal-oxide-semiconductor and
The source electrode of 9th metal-oxide-semiconductor is all connected with the in-line power end of electronic cigarette control chip, and the substrate of the 6th metal-oxide-semiconductor connects the 7th metal-oxide-semiconductor
Grid, the 7th metal-oxide-semiconductor drain electrode connection the tenth metal-oxide-semiconductor drain and gate and the 11st metal-oxide-semiconductor grid, the described 7th
The substrate of metal-oxide-semiconductor connects the grid of the 8th metal-oxide-semiconductor, the drain electrode and the 12nd of drain electrode the 11st metal-oxide-semiconductor of connection of the 8th metal-oxide-semiconductor
The grid of metal-oxide-semiconductor, the substrate of the 8th metal-oxide-semiconductor connects the grid of the 9th metal-oxide-semiconductor, the drain electrode connection of the 9th metal-oxide-semiconductor the
The drain electrode of the input of two phase inverters and the 12nd metal-oxide-semiconductor, the output end connection working state control module of the second phase inverter, the
The source ground of the source electrode of ten metal-oxide-semiconductors and the 12nd metal-oxide-semiconductor, the source electrode of the 11st metal-oxide-semiconductor connects the OUT of electronic cigarette control chip
End.
In described electronic cigarette control chip, the 6th metal-oxide-semiconductor, the 7th metal-oxide-semiconductor, the 8th metal-oxide-semiconductor and the 9th metal-oxide-semiconductor are
P-channel metal-oxide-semiconductor, the tenth metal-oxide-semiconductor, the 11st metal-oxide-semiconductor and the 12nd metal-oxide-semiconductor are N-channel MOS pipe.
A kind of electronic cigarette, including：Battery, atomizer, LED light, switch and electronic cigarette control chip described above, institute
The vdd terminal for stating electronic cigarette control chip connects the positive pole of battery, and the GND ends of the electronic cigarette control chip connect the negative pole of battery
And ground, the SW ends of the electronic cigarette control chip connect the negative pole of battery by the switch, the electronic cigarette control chip
OUT terminal connects charging inlet, is also grounded by atomizer, and the LED ends connection LED light of the electronic cigarette control chip is just
Pole, the negative pole ground connection of the LED light.
The electronic cigarette control chip and electronic cigarette provided compared to prior art, the present invention, by working state control module
Detect that the SW ends of electronic cigarette control chip are opened, or whether the voltage of OUT terminal is more than the inside started during the voltage of its vdd terminal
Vibration and voltage reference module make electronic cigarette control chip start working, then detect the OUT terminal by working state control module
Voltage whether be more than its vdd terminal voltage；If so, then judging electronic cigarette control chip for mode of operation；If it is not, judging electronics
Cigarette control chip is charge mode, realizes the different working condition of accurate detection electronic cigarette control chip, it is according to work shape
State controls its mode of operation.And it is more than the temperature spot of its inner setting in the temperature for detecting electronic cigarette control chip, immediately
It is stopped, prevents that lithium battery temperature is too high.
Brief description of the drawings
Fig. 1 is the structured flowchart of electronic cigarette control chip provided in an embodiment of the present invention.
Fig. 2 is the circuit diagram of working state control module in electronic cigarette control chip provided in an embodiment of the present invention.
Fig. 3 is the circuit diagram of charged state control module in electronic cigarette control chip provided in an embodiment of the present invention.
Fig. 4 is the circuit diagram of electronic cigarette control chip in electronic cigarette control chip provided in an embodiment of the present invention.
Fig. 5 is the circuit diagram of electronic cigarette provided in an embodiment of the present invention.
Fig. 6 is the flow chart of the working state control method of electronic cigarette provided in an embodiment of the present invention.
Fig. 7 is the workflow diagram of electronic cigarette provided in an embodiment of the present invention.
Embodiment
The present invention provides a kind of electronic cigarette control chip and electronic cigarette, to make the purpose of the present invention, technical scheme and effect
Clearer, clear and definite, the present invention is described in more detail for the embodiment that develops simultaneously referring to the drawings.It should be appreciated that this place is retouched
The specific embodiment stated only to explain the present invention, is not intended to limit the present invention.
The model LC6201 for the electronic cigarette control chip that the present invention is provided, it includes lithium battery anode end VDD, connection lithium
GND end GND, atomizer driving and charging input end OUT, key switch SW, this 5 ends of display driving LED.Wherein, exist
During charge mode, VDD be voltage output end to lithium cell charging, OUT is that voltage input end connects external charging interface；In work
During pattern, VDD be voltage input end from lithium battery input voltage, OUT is voltage output end driving atomizer work.
After LC6201 electronic cigarette control chips start, the voltage of OUT terminal and vdd terminal is detected in real time：When vdd terminal voltage is more than
During OUT terminal voltage, electronic cigarette control chip is judged for mode of operation, when vdd terminal voltage is less than OUT terminal voltage, judges electronics
Cigarette control chip is charge mode.
Under charge mode, LC6201 electronic cigarette control chips can first determine whether the voltage of lithium battery, because lithium battery exists
Corresponding electric current is needed to be charged under different voltages, to ensure that the service life of lithium battery is unaffected.Then electric current is used
Control circuit is accurately controlled the charging current of output, while timer internal is opened, after charging reaches certain time
Positive closing is charged, it is to avoid lithium battery overcharge.
In the operational mode, LC6201 electronic cigarette control chips have two states, i.e. holding state and working condition.Not
When detecting external switch invalidating signal, electronic cigarette control chip is in holding state, and electronic cigarette control chip can close inside
Vibration and internal reference voltage, now the power consumption of electronic cigarette control chip and its it is small be less than 1 milliwatt.Opened detecting outside
After OFF signal is effective, electronic cigarette control chip enters working condition, internal oscillator and internal reference voltage can be opened first, then examine
The whether too low unsuitable work of lithium battery voltage is surveyed, when lithium battery is pressed in working range, then just driving atomizer work
And detect whether atomizer is short-circuit, while timer, which is opened, prevents that electric discharge is impacted to lithium battery for a long time.
When electronic cigarette control chip starts, either in charge mode or mode of operation, electronic cigarette control can be detected
The temperature of chip, when detect temperature be more than inner setting temperature spot when, be stopped immediately, prevent lithium battery temperature mistake
It is high.
Referring to Fig. 1, the electronic cigarette control chip that the present invention is provided includes：Working state control module, internal oscillator and
Voltage reference module, charged state control module, holding state judge module and temperature protection module.The working state control
The first input end of module connects the SW ends of electronic cigarette control chip, the first output end connection of the working state control module
The OUT terminal of electronic cigarette control chip and LED ends, the second output end connection holding state judge module of working state control module
First input end, temperature protection module connect holding state judge module the second input, holding state judge module
Output end connects the second input and the charged state control of working state control module by internal oscillator and voltage reference module
The first input end of molding block, the second input of the charged state control module connects the OUT terminal of electronic cigarette control chip,
First output end of charged state control module connects the LED ends of electronic cigarette control chip, the second of charged state control module
Output end connects the first input end of holding state judge module.
Wherein, the working state control module is used to detect whether the SW ends of electronic cigarette control chip open, and detection
Whether the voltage of the OUT terminal of electronic cigarette control chip is more than the voltage of its vdd terminal.When the SW ends unlatching of electronic cigarette control chip,
Or the voltage of OUT terminal starts internal oscillator and voltage reference module when whether being more than the voltage of its vdd terminal.
The charged state control module control electronic cigarette control chip charges to external cell, and to the big of charging voltage
It is small to be controlled.Holding state judge module is used for the holding state for controlling electronic cigarette control chip.Temperature protection module electronics
When cigarette control chip temperature is higher than preset temperature, control electronic cigarette control chip is stopped, and prevents that lithium battery temperature is too high.
The present embodiment by working state control module detect electronic cigarette control chip SW ends open, or OUT terminal electricity
Whether pressure, which is more than the internal oscillator started during the voltage of its vdd terminal and voltage reference module, makes electronic cigarette control chip start work
Make, then detect whether the voltage of the OUT terminal is more than the voltage of its vdd terminal by working state control module；If so, then judging electricity
Sub- cigarette control chip is mode of operation；If it is not, judging electronic cigarette control chip for charge mode, accurate detection electronic cigarette is realized
The different working condition of control chip, it is according to its mode of operation of working state control.And detecting electronic cigarette control core
The temperature of piece is more than the temperature spot of its inner setting, is stopped immediately, prevents that lithium battery temperature is too high.
Also referring to Fig. 1 and Fig. 2, the working state control module, which includes working state control module, includes the first ratio
Negative input end connection electronics compared with device A1, the first metal-oxide-semiconductor P1, the first phase inverter and the second metal-oxide-semiconductor P2, the first comparator A1
The vdd terminal of cigarette control chip, first comparator A1 positive input terminal connects the OUT terminal of electronic cigarette control chip, first ratio
Output end compared with device A1 connects the first metal-oxide-semiconductor P1 grid, and the first metal-oxide-semiconductor P1 source electrode connects the inside of electronic cigarette control chip
Power supply, the first metal-oxide-semiconductor P1 drain electrode connects the vdd terminal, and the first metal-oxide-semiconductor P1 substrate connects second by the first phase inverter
Metal-oxide-semiconductor P2 grid, the second metal-oxide-semiconductor P2 source electrode connects the internal electric source of electronic cigarette control chip, the second metal-oxide-semiconductor P2 drain electrode
Connect the vdd terminal.
The first metal-oxide-semiconductor P1 and the second metal-oxide-semiconductor P2 is P-channel metal-oxide-semiconductor.The present embodiment is sentenced using first comparator A1
The OUT terminal of disconnected electronic cigarette control chip and the voltage of vdd terminal, when vdd terminal voltage is higher than OUT terminal voltage, the first metal-oxide-semiconductor P1 is led
Logical, electronic cigarette control chip internal electric source is connected with VDD；When OUT terminal voltage is higher than vdd terminal voltage, the second metal-oxide-semiconductor P2 is turned on,
Electronic cigarette control chip internal electric source is connected with OUT, so as to ensure when vdd voltage is 0V, in electronic cigarette control chip connection
After charger, electronic cigarette control chip can use OUT terminal as power supply and carry out charging operations.
Referring to Fig. 3, the charged state control module includes the second comparator A3, the 3rd comparator A4, the 3rd metal-oxide-semiconductor
P3, the 4th metal-oxide-semiconductor P4, the 5th metal-oxide-semiconductor P5 and resistance R1, the drain electrode of the 3rd metal-oxide-semiconductor P3 and the 4th metal-oxide-semiconductor P4 drain electrode are equal
The OUT terminal of electronic cigarette control chip is connected, the substrate of the 3rd metal-oxide-semiconductor P3 connects the 4th metal-oxide-semiconductor P4 grid, the described 3rd
Metal-oxide-semiconductor P3 source electrode connects the second comparator A3 positive input terminal, also connects external electrical by the vdd terminal of electronic cigarette control chip
The positive pole in pond, the source electrode of the 4th metal-oxide-semiconductor P4 connects the second comparator A3 negative input end and the 5th metal-oxide-semiconductor P5 source electrode,
The output end of the second comparator A3 connects the 5th metal-oxide-semiconductor P5 grid, and the 5th metal-oxide-semiconductor P5 drain electrode is connect by resistance R1
Ground, the positive input terminal of the 3rd comparator A4 connects the internal reference voltage end of electronic cigarette control chip, the 3rd comparator A4
Negative input end be grounded by the resistance R1, the output end of the 3rd comparator A4 connects the 3rd metal-oxide-semiconductor P3 grid.
The 3rd metal-oxide-semiconductor P3, the 4th metal-oxide-semiconductor P4, the 5th metal-oxide-semiconductor P5 are P-channel metal-oxide-semiconductor, are low electricity in its grid
Usually, metal-oxide-semiconductor is turned on.Current detecting is carried out in charging section series resistance R1 during due to large current charge, the damage of electric current can be caused
Lose, therefore using the image current method detection charging current shown in Fig. 3, pass through electric currents of the 4th metal-oxide-semiconductor P4 to the 3rd metal-oxide-semiconductor P3
Scaled down mirror image, (N is the number more than 1 to IP3=N*IP4）.Because the internal resistance of external connection lithium battery is different and lithium battery
Internal resistance is also different when voltage is different, carries out mirror image to lithium battery internal resistance using the 5th metal-oxide-semiconductor P5, makes inside electronic cigarette control chip
A charging current similar with lithium battery is simulated, a voltage, voltage and inside are generated as current flowing resistance R1
Reference voltage is compared using the 3rd comparator A4, so as to ensure that the electric current to lithium cell charging is steady state value.If desired
Adjust the size of charging current, it is only necessary to adjust resistance R1 resistance.
Preferably, the electronic cigarette control chip of the present invention also includes short-circuit detecting module, the OUT with electronic cigarette control chip
End connection.Referring to Fig. 4, the short-circuit detecting module includes：6th metal-oxide-semiconductor P6, the 7th metal-oxide-semiconductor P7, the 8th metal-oxide-semiconductor P8,
Nine metal-oxide-semiconductor P9, the tenth metal-oxide-semiconductor N1, the 11st metal-oxide-semiconductor N2, the 12nd metal-oxide-semiconductor N3 and the second phase inverter A5.
In the present embodiment, the 6th metal-oxide-semiconductor P6, the 7th metal-oxide-semiconductor P7, the 8th metal-oxide-semiconductor P8 and the 9th metal-oxide-semiconductor P9 are P ditches
Road metal-oxide-semiconductor, the tenth metal-oxide-semiconductor N1, the 11st metal-oxide-semiconductor N2 and the 12nd metal-oxide-semiconductor N3 are N-channel MOS pipe.The 6th metal-oxide-semiconductor P6
Grid and drain electrode connection electronic cigarette control chip REFI ends, the 6th metal-oxide-semiconductor P6 source electrode, the 7th metal-oxide-semiconductor P7 source electrode, the
Eight metal-oxide-semiconductor P8 source electrode and the 9th metal-oxide-semiconductor P9 source electrode are all connected with the in-line power end of electronic cigarette control chip, the 6th metal-oxide-semiconductor
P6 substrate connects the 7th metal-oxide-semiconductor P7 grid, the 7th metal-oxide-semiconductor P7 the tenth metal-oxide-semiconductor N1 of drain electrode connection drain and gate and
11st metal-oxide-semiconductor N2 grid, the substrate of the 7th metal-oxide-semiconductor P7 connects the 8th metal-oxide-semiconductor P8 grid, the 8th metal-oxide-semiconductor P8's
The 11st metal-oxide-semiconductor N2 of drain electrode connection drain electrode and the 12nd metal-oxide-semiconductor N3 grid, the substrate connection the of the 8th metal-oxide-semiconductor P8
Nine metal-oxide-semiconductor P9 grid, the second phase inverter A5 of drain electrode connection of the 9th metal-oxide-semiconductor P9 input and the 12nd metal-oxide-semiconductor N3
Drain electrode, the second phase inverter A5 output end connection working state control module, the tenth metal-oxide-semiconductor N1 source electrode and the 12nd MOS
Pipe N3 source ground, the 11st metal-oxide-semiconductor N2 source electrode connects the OUT terminal of electronic cigarette control chip.
When the present invention avoids atomizer short-circuit, electronic cigarette control chip work causes its internal components to damage, therefore uses
Short-circuit detecting module as shown in Figure 4, when OUT terminal short circuit（Atomizer short circuit）When, short-circuit detecting module is detected, prevents defeated
Go out the excessive damage device of electric current.In Fig. 4, the 6th metal-oxide-semiconductor P6, the 7th metal-oxide-semiconductor P7, the 8th metal-oxide-semiconductor P8, the 9th metal-oxide-semiconductor P9 shapes
Current source is mirrored into, the tenth metal-oxide-semiconductor N1 goes out to obtain electric current from the 7th metal-oxide-semiconductor P7 and is supplied to the 11st metal-oxide-semiconductor N2.When OUT terminal does not have
When having short circuit grounding, the 12nd metal-oxide-semiconductor N3 will obtain electric current at the 8th metal-oxide-semiconductor P8, and it is high level to make output SC；Work as OUT terminal
During short circuit grounding, there is electric current at the 11st metal-oxide-semiconductor N2, the 12nd metal-oxide-semiconductor N3 is obtained electric current at the 11st metal-oxide-semiconductor N2, make
Output SC be low level so that reach detection OUT terminal whether short circuit purpose.
The present invention accordingly provides a kind of electronic cigarette, referring to Fig. 5, it includes：Battery BAT, atomizer L1, LED light
D1, switch SW and electronic cigarette control chip U1, the electronic cigarette control chip U1 vdd terminal connection battery BAT positive pole, it is described
Electronic cigarette control chip U1 GND ends connection battery BAT negative pole and ground, the SW ends of the electronic cigarette control chip U1 pass through institute
Switch SW connection batteries BAT negative pole is stated, the OUT terminal of the electronic cigarette control chip U1 connects charging inlet J1, also passes through mist
Change device L1 ground connection, the LED ends of the electronic cigarette control chip U1 connect LED light D1 positive pole, the LED light D1's
Negative pole is grounded.
In electronic cigarette, when switching SW disconnections, electronic cigarette control chip U1 is constantly in holding state, only detects
Controlling switch SW close or OUT terminal voltage be more than vdd terminal voltage when, electronic cigarette control chip U1 can just open internal oscillator and
Voltage reference module.There is independent temperature protection module in electronic cigarette control chip U1, it is ensured that as long as electronic cigarette control chip
Temperature must just be stopped immediately higher than the temperature spot of inner setting, and temperature protection module is not by the shadow of other modules
Ring.
The present invention correspondingly provides a kind of working state control method of above-mentioned electronic cigarette, referring to Fig. 6, it includes：
S100, working state control module detection electronic cigarette control chip SW ends open, or OUT terminal voltage whether
More than its vdd terminal voltage when the internal oscillator that starts and voltage reference module；
S200, working state control module detect whether the voltage of the OUT terminal is more than the voltage of its vdd terminal；If so, then
Judge electronic cigarette control chip for mode of operation；If it is not, judging electronic cigarette control chip for charge mode.
Wherein, in step s 200, when judging electronic cigarette control chip for charge mode, the charged state controls mould
Block compares the voltage of vdd terminal and the size of the first reference voltage V 1 and the second reference voltage V 2；When the voltage of vdd terminal is less than first
During reference voltage V 1, charged the battery using the first charging current I1 of constant pressure；When the voltage of vdd terminal is in the first reference voltage V 1
And second between reference voltage V 2 when, charged the battery using the second charging current I2 of constant pressure；When the voltage of vdd terminal is more than the
During two reference voltage V2, charged the battery using the 3rd charging current I3 of constant pressure.Wherein, the second charging current I2 is more than first
Charging current I1 and less than the 3rd charging current I3.Then, start first timer, terminate in timing or OUT terminal voltage is less than
During vdd voltage, electronic cigarette control chip is set to exit charged state, and enter holding state.
When working state control module detects switch closure, electronic cigarette control chip needs detection vdd terminal electricity
Pressure（That is lithium battery voltage）Whether inner setting electrical voltage point V3 is more than, so that prevent lithium battery voltage too low, driving atomizer effect
Fruit is not obvious, and low-voltage discharge excessively is impacted to lithium battery, detects whether atomizer is short-circuit, prevents discharge current afterwards
It is excessive, burn out electronic cigarette control chip and lithium battery.After driving atomizer work, start second timer, when preventing long
Between discharge.
The present invention correspondingly provides the Application Example of the working state control method of electronic cigarette, as shown in fig. 7, when detection
When switch is pressed or OUT terminal voltage is more than vdd terminal voltage, internal oscillator and voltage reference module are opened；Now it is divided into two kinds
Situation：The first situation, when detect OUT terminal voltage be more than vdd terminal voltage when, by charged state control module detection battery charging
Voltage, and the charging current for selecting to be adapted to according to aforesaid way, and disconnected when reaching the charge timing time, or with charger
Electronic cigarette control chip is set to enter holding state during connection；Second situation, when switching SW and pressing, detection battery discharge electricity
Pressure, when discharge voltage exceedes and sets circuit, makes electronic cigarette control chip enter holding state, prevents lithium battery voltage too low,
Atomizer DeGrain is driven, and crosses low-voltage discharge lithium battery is impacted.Whether detection atomizer is short-circuit afterwards,
Electronic cigarette control chip is entered holding state in atomizer short circuit, prevent discharge current excessive, burn out electronic cigarette control chip
And lithium battery.In the no short circuit of atomizer, driving atomizer work, and when timing is reached or switch SW disconnects, make
Electronic cigarette control chip enters holding state.
In summary, the present invention is provided electronic cigarette control chip and electronic cigarette, electricity is detected by working state control module
The SW ends of sub- cigarette control chip are opened, or OUT terminal voltage whether be more than the internal oscillator that starts during the voltage of its vdd terminal and
Voltage reference module makes electronic cigarette control chip start working, then by the voltage of the working state control module detection OUT terminal
Whether the voltage of its vdd terminal is more than；If so, then judging electronic cigarette control chip for mode of operation；If it is not, judging that electronic cigarette is controlled
Chip is charge mode, realizes the different working condition of accurate detection electronic cigarette control chip, it is according to working state control
Its mode of operation.And it is more than the temperature spot of its inner setting in the temperature for detecting electronic cigarette control chip, stops work immediately
Make, prevent that lithium battery temperature is too high.
The peripheral components that use of electronic cigarette control chip of the present invention are few, circuit structure is simple, it is to avoid external devices
The management of charging and discharging of differentia influence lithium battery, and with independent temperature protection module, it is ensured that electronic cigarette control chip temperature
When too high, it is charged and discharged module and no longer works.
Meanwhile, when electronic cigarette control chip charges, it ensure that in large current charge, the model of accurate control electric current
Enclose, improve charge efficiency.
In addition, the present invention electronic cigarette control chip also have 0V charge functions, i.e., when lithium battery be low pressure, it cannot be guaranteed that
In the case that electronic cigarette control chip works, after connection external power source, electronic cigarette control chip can also start and to lithium battery
Carry out charging operations.
It is understood that for those of ordinary skills, can be with technique according to the invention scheme and its hair
Bright design is subject to equivalent substitution or change, and all these changes or replacement should all belong to the guarantor of appended claims of the invention
Protect scope.
Claims (8)
1. a kind of electronic cigarette control chip, it is characterised in that including：
For detecting whether the SW ends of electronic cigarette control chip open, and the voltage of the OUT terminal of detection electronic cigarette control chip is
The working state control module of the no voltage more than its vdd terminal；
For when electronic cigarette control chip SW ends unlatching, or OUT terminal voltage be more than its vdd terminal voltage when start it is interior
Portion vibrates and voltage reference module；
For the charged state control module for controlling electronic cigarette control chip to be charged to external cell；
For the holding state judge module for the holding state for controlling electronic cigarette control chip；
For when electronic cigarette control chip temperature is higher than preset temperature, the temperature that control electronic cigarette control chip is stopped to be protected
Protect module；
The first input end of the working state control module connects the SW ends of electronic cigarette control chip, the working state control
The OUT terminal of the first output end connection electronic cigarette control chip of module and LED ends, the second output end of working state control module
Connect the first input end of holding state judge module, the second input of temperature protection module connection holding state judge module
End, the output end of holding state judge module connects the of working state control module by internal oscillator and voltage reference module
The first input end of two inputs and charged state control module, the second input connection electricity of the charged state control module
The OUT terminal of sub- cigarette control chip, the first output end of charged state control module connects the LED ends of electronic cigarette control chip, fills
Second output end of electricity condition control module connects the first input end of holding state judge module.
2. electronic cigarette control chip according to claim 1, it is characterised in that the working state control module includes the
One comparator, the first metal-oxide-semiconductor, the first phase inverter and the second metal-oxide-semiconductor, the negative input end connection electronic cigarette control of the first comparator
The vdd terminal of coremaking piece, the positive input terminal of first comparator connects the OUT terminal of electronic cigarette control chip, the first comparator
Output end connects the grid of the first metal-oxide-semiconductor, and the source electrode of the first metal-oxide-semiconductor connects the internal electric source of electronic cigarette control chip, the first MOS
The drain electrode of pipe connects the vdd terminal, and the substrate of the first metal-oxide-semiconductor connects the grid of the second metal-oxide-semiconductor, second by the first phase inverter
The source electrode of metal-oxide-semiconductor connects the internal electric source of electronic cigarette control chip, and the drain electrode of the second metal-oxide-semiconductor connects the vdd terminal.
3. electronic cigarette control chip according to claim 2, it is characterised in that first metal-oxide-semiconductor and the second metal-oxide-semiconductor are equal
For P-channel metal-oxide-semiconductor.
4. electronic cigarette control chip according to claim 1, it is characterised in that the charged state control module includes the
Two comparators, the 3rd comparator, the 3rd metal-oxide-semiconductor, the 4th metal-oxide-semiconductor, the 5th metal-oxide-semiconductor and resistance, the drain electrode of the 3rd metal-oxide-semiconductor and
The drain electrode of 4th metal-oxide-semiconductor is all connected with the OUT terminal of electronic cigarette control chip, and the substrate of the 3rd metal-oxide-semiconductor connects the 4th metal-oxide-semiconductor
Grid, the source electrode of the 3rd metal-oxide-semiconductor connects the positive input terminal of the second comparator, also passes through the vdd terminal of electronic cigarette control chip
The positive pole of external cell is connected, the source electrode of the 4th metal-oxide-semiconductor connects the negative input end of the second comparator and the source of the 5th metal-oxide-semiconductor
Pole, the output end of second comparator connects the grid of the 5th metal-oxide-semiconductor, and the drain electrode of the 5th metal-oxide-semiconductor is described by resistance eutral grounding
The positive input terminal of 3rd comparator connects the internal reference voltage end of electronic cigarette control chip, and the negative input end of the 3rd comparator leads to
The resistance eutral grounding is crossed, the output end of the 3rd comparator connects the grid of the 3rd metal-oxide-semiconductor.
5. electronic cigarette control chip according to claim 4, it is characterised in that the 3rd metal-oxide-semiconductor, the 4th metal-oxide-semiconductor,
Five metal-oxide-semiconductors are P-channel metal-oxide-semiconductor.
6. electronic cigarette control chip according to claim 1, it is characterised in that the electronic cigarette control chip also includes short
Road detection module, is connected with the OUT terminal of electronic cigarette control chip, and the short-circuit detecting module includes：6th metal-oxide-semiconductor, the 7th MOS
Pipe, the 8th metal-oxide-semiconductor, the 9th metal-oxide-semiconductor, the tenth metal-oxide-semiconductor, the 11st metal-oxide-semiconductor, the 12nd metal-oxide-semiconductor and the second phase inverter, the described 6th
The REFI ends of the grid of metal-oxide-semiconductor and drain electrode connection electronic cigarette control chip, the source electrode of the 6th metal-oxide-semiconductor, the source electrode of the 7th metal-oxide-semiconductor,
The source electrode of 8th metal-oxide-semiconductor and the source electrode of the 9th metal-oxide-semiconductor are all connected with the in-line power end of electronic cigarette control chip, the 6th metal-oxide-semiconductor
Substrate connects the grid of the 7th metal-oxide-semiconductor, the drain and gate and the 11st metal-oxide-semiconductor of drain electrode the tenth metal-oxide-semiconductor of connection of the 7th metal-oxide-semiconductor
Grid, the substrate of the 7th metal-oxide-semiconductor connects the grid of the 8th metal-oxide-semiconductor, and the drain electrode of the 8th metal-oxide-semiconductor connects the 11st metal-oxide-semiconductor
Drain electrode and the 12nd metal-oxide-semiconductor grid, the substrate of the 8th metal-oxide-semiconductor connects the grid of the 9th metal-oxide-semiconductor, the 9th MOS
The drain electrode of the input and the 12nd metal-oxide-semiconductor of drain electrode the second phase inverter of connection of pipe, the output end connection work of the second phase inverter
Status control module, the source electrode of the tenth metal-oxide-semiconductor and the source ground of the 12nd metal-oxide-semiconductor, the source electrode connection electronics of the 11st metal-oxide-semiconductor
The OUT terminal of cigarette control chip.
7. electronic cigarette control chip according to claim 6, it is characterised in that the 6th metal-oxide-semiconductor, the 7th metal-oxide-semiconductor,
Eight metal-oxide-semiconductors and the 9th metal-oxide-semiconductor are P-channel metal-oxide-semiconductor, and the tenth metal-oxide-semiconductor, the 11st metal-oxide-semiconductor and the 12nd metal-oxide-semiconductor are N-channel MOS
Pipe.
8. a kind of electronic cigarette, it is characterised in that including：Battery, atomizer, LED light, switch and such as claim 1-7
Electronic cigarette control chip described in meaning one, the vdd terminal of the electronic cigarette control chip connects the positive pole of battery, the electronic cigarette
The GND ends of control chip connect the negative pole and ground of battery, and the SW ends of the electronic cigarette control chip pass through the switch connection electricity
The negative pole in pond, the OUT terminal of the electronic cigarette control chip connects charging inlet, is also grounded by atomizer, the electronic cigarette control
The LED ends of coremaking piece connect the positive pole of LED light, the negative pole ground connection of the LED light.
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| CN201510077393.0A CN104770884B (en) | 2015-02-13 | 2015-02-13 | Electronic cigarette control chip and electronic cigarette |
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| CN201510077393.0A CN104770884B (en) | 2015-02-13 | 2015-02-13 | Electronic cigarette control chip and electronic cigarette |
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| EP3767780A1 (en) * | 2019-07-17 | 2021-01-20 | Japan Tobacco Inc. | Power supply unit for aerosol suction device, power supply diagnosis method of aerosol suction device, and power supply diagnosis program of aerosol suction device |
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| CN105394817B (en) * | 2015-12-09 | 2018-06-29 | 卓尔悦欧洲控股有限公司 | A kind of control device with prompting function, electronic cigarette and control method |
| GB201707194D0 (en) | 2017-05-05 | 2017-06-21 | Nicoventures Holdings Ltd | Electronic aerosol provision system |
| GB201709982D0 (en) | 2017-06-22 | 2017-08-09 | Nicoventures Holdings Ltd | Electronic vapour provision system |
| CN109407727A (en) * | 2017-08-15 | 2019-03-01 | 卓尔悦欧洲控股有限公司 | The temperature control method and its electronic cigarette of electronic cigarette |
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