CN208445301U - A kind of power supply circuit and electronic cigarette - Google Patents
A kind of power supply circuit and electronic cigarette Download PDFInfo
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- CN208445301U CN208445301U CN201820706734.5U CN201820706734U CN208445301U CN 208445301 U CN208445301 U CN 208445301U CN 201820706734 U CN201820706734 U CN 201820706734U CN 208445301 U CN208445301 U CN 208445301U
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Abstract
The utility model provides a kind of power supply circuit, including ferric phosphate lithium cell, control circuit and switching circuit, switching circuit is connected with ferric phosphate lithium cell and control circuit respectively, the enable signal that switching circuit is exported according to control circuit, the supply voltage that ferric phosphate lithium cell is provided are converted to operating voltage and export to working equipment.The utility model also provides a kind of electronic cigarette.The power supply circuit and electronic cigarette of the utility model provide supply voltage by ferric phosphate lithium cell, solve security risk, ferric phosphate lithium cell itself can anti-overcharge overdischarge, therefore, the desirable battery protecting circuit that disappears；The enable signal that switching circuit is exported according to control circuit, the supply voltage that ferric phosphate lithium cell is provided are converted to operating voltage and export to working equipment such as atomizer, and power supply circuit has very high safety, and has saved cost.
Description
Technical field
The utility model relates to field of electronic device, in particular to a kind of power supply circuit and electronic cigarette.
Background technique
The electronic equipments such as existing electronic cigarette are often used lithium battery as internal electric source.Wherein, current most lithium batteries
Cobalt acid lithium battery etc. is used, still, cobalt acid lithium battery has burning, explosion because of the misoperations such as super-charge super-discharge and short circuit
Etc. numerous insecurity factors, therefore, in order to use cobalt acid lithium battery safely, need to connect cobalt acid lithium battery into battery guarantor on circuit
Protection circuit but but also circuit is more complicated, and increases the cost of product.
Utility model content
The utility model provides a kind of power supply circuit and electronic cigarette, need to connect battery protection electricity for solving lithium battery power supply
The problem of road.
The utility model technical scheme applied to solve the technical problem is as follows:
It is described the utility model discloses a kind of power supply circuit, including ferric phosphate lithium cell, control circuit and switching circuit
Switching circuit is connected with the ferric phosphate lithium cell and the control circuit respectively, and the switching circuit is according to the control circuit
The supply voltage that the ferric phosphate lithium cell provides is converted to operating voltage and exported to working equipment by the enable signal of output.
Wherein, supply voltage is provided using ferric phosphate lithium cell, the lithium batteries such as cobalt acid lithium battery can be solved because of super-charge super-discharge and short circuit etc.
Misoperation and exist burning, explosion etc. security risks, ferric phosphate lithium cell itself can anti-overcharge overdischarge therefore can
Cancel corresponding battery protecting circuit.
In a wherein embodiment, the control circuit includes control chip, and the control chip includes control letter
The control signal input of number input terminal, enabled output end, the control chip receives the power supply by first switching element
Voltage, and pass through initial ground resistance eutral grounding.
In a wherein embodiment, the control chip further includes the first power supply receiving end and the first ground terminal.Institute
The the first power supply receiving end for stating control chip receives the supply voltage by the first filter resistance, and passes through the first filter in parallel
Wave capacitor and the second filter capacitor are connected with the first ground terminal of the control chip.
In a wherein embodiment, the switching circuit includes switch chip, and the switch chip includes first logical
First path terminal at terminal, the first control terminal and alternate path end, the switch chip receives the supply voltage, the switch
First control terminal of chip is connected with the enabled output end of the control chip, and the alternate path end of the switch chip exports institute
State operating voltage.
In a wherein embodiment, the power supply circuit further includes that the resistance being electrically connected with the switching circuit is examined
Slowdown monitoring circuit, the resistance detecting circuit are used to detect the resistance value of the working equipment of connection；The switching circuit is used for root
The supply voltage is converted to the electricity of work corresponding to the resistance value by the resistance value detected according to the resistance detecting circuit
Pressure.
In a wherein embodiment, the resistance detecting circuit includes the first current-limiting resistance, the second current-limiting resistance, the
One detection resistance, the second detection resistance, third detection resistance, third filter capacitor, the 4th filter capacitor and second switch element.
The third path end of the second switch element receives the supply voltage, and the first end phase with first current-limiting resistance
Even, the second control terminal of the second switch element is connected with the first end of second current-limiting resistance, the second switch member
The fourth passage end of part is connected with the first end of first detection resistance；The second end of first current-limiting resistance and described the
The second end of two current-limiting resistances is connected.The first end of second detection resistance is grounded by the third filter capacitor, described
The second end of second detection resistance is connected with the second end of first detection resistance, and is connected with working equipment.The third
The first end of detection resistance is grounded by the 4th filter capacitor, and the second end of the third detection resistance is opened with described second
The fourth passage end for closing element is connected.
In a wherein embodiment, the power supply circuit further includes that detection enable signal output end, the first electric current connect
Receiving end, the second current receiv end, the detection enable signal output end are connected with the second end of first current-limiting resistance；It is described
First current receiv end is connected with the first end of second detection resistance；Second current receiv end and the third detect
The first end of resistance is connected.
In a wherein embodiment, the control circuit further includes at least one indicator light control terminal, each instruction
Lamp control terminal is connected with indicating circuit.Wherein, the indicating circuit include at least one third current-limiting resistance, at least one
The cathode of one light emitting diode, each first light emitting diode passes through a third current-limiting resistance and an indicator light control terminal phase
Even, the anode of each first light emitting diode receives the supply voltage.
The utility model also provides a kind of electronic cigarette, and electronic cigarette includes above-mentioned power supply circuit.
In a wherein embodiment, the electronic cigarette further includes charging circuit, the charging circuit include connector,
Charging chip.The charging chip includes second source receiving end, charging voltage output end and charging instruction end, second electricity
Source receiving end is connected by the connector with external power supply, is also connected with the first end of the first divider resistance.Described first point
The second end of piezoresistance is connected with the external interface test side of the control circuit.The first end of second divider resistance and described the
The second end of one divider resistance is connected, the second end ground connection of second divider resistance.The charging voltage output end is for defeated
Out charging voltage to the ferric phosphate lithium cell anode.The charging instruction end passes through the 4th current-limiting resistance and charging electricity
It presses output end to be connected, is also connected with the charging instruction input terminal of the control circuit.
In a wherein embodiment, the electronic cigarette includes atomizer, and the atomizer receives the operating voltage
Afterwards, matrix is formed to aerosol according to the operating voltage to be atomized so that user sucks.
Technical solution provided by the embodiment of the utility model has the benefit that
The utility model provides a kind of power supply circuit and electronic cigarette, passes through ferric phosphate lithium cell and provides supply voltage, solves
Security risk, ferric phosphate lithium cell itself can anti-overcharge overdischarge, therefore, the desirable battery protecting circuit that disappears；Switch electricity
The enable signal that road is exported according to control circuit, the supply voltage that ferric phosphate lithium cell is provided be converted to operating voltage export to
Working equipment such as atomizer, power supply circuit has very high safety, and has saved cost.
The above description is merely an outline of the technical solution of the present invention, in order to better understand the skill of the utility model
Art means, and being implemented in accordance with the contents of the specification, and in order to allow the above and other purpose, feature of the utility model
It can be more clearly understood with advantage, it is special below to lift preferred embodiment, and cooperate attached drawing, detailed description are as follows.
Detailed description of the invention
Fig. 1 is the schematic diagram of the power supply circuit of the utility model first embodiment；
Fig. 2 is the circuit connection diagram of the power supply circuit of the utility model second embodiment；
Fig. 3 is the circuit connection diagram of the indicating circuit of the power supply circuit of the utility model 3rd embodiment.
Fig. 4 is the circuit connection diagram of the charging circuit of the utility model fourth embodiment.
Specific embodiment
Further to illustrate that the utility model is the technical means and efficacy reaching predetermined purpose of utility model and being taken,
Below in conjunction with attached drawing and preferred embodiment, to according to the utility model proposes power supply circuit, method and electronic cigarette specific reality
Mode, structure, feature and effect are applied, detailed description is as follows.
Aforementioned and other technology contents, feature and effect in relation to the utility model, following cooperation with reference to schema compared with
Good embodiment can be clearly presented in being described in detail.By the explanation of specific embodiment, when can be to the utility model up to
It is able to more deeply and specifically understand at the technical means and efficacy that predetermined purpose is taken, however shown attached drawing is only to provide
Reference and description is used, and is not used to limit the utility model.
First embodiment
Fig. 1 is the schematic diagram of the power supply circuit of the utility model first embodiment.As shown in Figure 1, the power supply of the present embodiment
Circuit includes ferric phosphate lithium cell 100, control circuit 200 and switching circuit 300, and switching circuit 300 is electric with LiFePO4 respectively
Pond 100 is connected with control circuit 200, the enable signal that switching circuit 300 is exported according to control circuit 200, by LiFePO4 electricity
The supply voltage VCC_BAR that pond 100 provides is converted to operating voltage VOUT and exports to working equipment 400.
Specifically, switching circuit 300 is connected with ferric phosphate lithium cell 100 and control circuit 200 respectively, switching circuit 300
According to the enable signal (such as low level signal) that control circuit 200 exports, the supply voltage that ferric phosphate lithium cell 100 is provided
VCC_BAR is converted to operating voltage VOUT and exports to working equipment 400, wherein uses ferric phosphate lithium cell as power supply circuit
Power supply.Ferric phosphate lithium cell has the advantages that following: 1, the service life is long, and cycle life is at 2000 times or more.2, using safe, battery
By strictly testing, uses on many automobiles, will not explode in traffic accident now.3, charging quickly, makes
With dedicated charger, 1.5C can be full of for 40 minutes when charging.4, ferric phosphate lithium cell high temperature resistant, ferric phosphate lithium cell hot wind
Value can achieve 350 to 500 degrees Celsius.5, ferric phosphate lithium cell capacity is big.6, ferric phosphate lithium cell does not have memory effect.7, phosphorus
Sour lithium iron battery is environmentally protective, nontoxic, pollution-free.8, raw material sources are extensive, cheap.
The present embodiment provides supply voltage VCC_BAR using ferric phosphate lithium cell 100, can solve the lithiums such as cobalt acid lithium battery electricity
There are the security risks such as burning, explosion because of the misoperations such as super-charge super-discharge and short circuit in pond, ferric phosphate lithium cell 100 itself is
Therefore the anti-overcharge overdischarge of energy can not have to connect corresponding battery protecting circuit, simplify circuit.
In a wherein embodiment, power supply circuit further includes the resistance detection electricity being electrically connected with switching circuit 300
Road 500, resistance detecting circuit 500 are used to detect the resistance value of the working equipment 400 of connection.Switching circuit 300 is used for according to electricity
Supply voltage VCC_BAR is converted to operating voltage VOUT corresponding to resistance value by the resistance value that resistance detection circuit 500 detects.
Wherein it is possible to be previously stored with the corresponding relationship between different resistance values and operating voltage VOUT, and then detecting resistance value
Later, the operating voltage VOUT according to corresponding to the resistance value that corresponding relationship inquiry detects.
In a wherein embodiment, power supply circuit further includes the indicating circuit being electrically connected with control circuit 200
600, indicating circuit 600 is displayed for the electricity etc. of battery.
The power supply circuit of the present embodiment provides supply voltage VCC_BAR by ferric phosphate lithium cell 100, solves safety
Hidden danger, ferric phosphate lithium cell 100 itself can anti-overcharge overdischarge, therefore, the desirable battery protecting circuit that disappears；Switching circuit
300 enable signals exported according to control circuit 200, the supply voltage VCC_BAR that ferric phosphate lithium cell 100 provides is converted to
Operating voltage VOUT is exported to such as atomizer of working equipment 400, and power supply circuit has very high safety, and saved at
This.
Second embodiment
Fig. 2 is the circuit connection diagram of the power supply circuit of the utility model second embodiment.As shown in Fig. 2, the present embodiment
In power supply circuit, control circuit 200 includes control chip U1, and switching circuit 300 includes switch chip U2.
Specifically, control chip U1 includes control signal input 201, enabled output end 202, controls the control of chip U1
Signal input part 201 receives the supply voltage VCC_BAR that ferric phosphate lithium cell 100 provides by first switching element SW1, and logical
Cross initial ground resistance R1 ground connection.
Specifically, switch chip U2 includes the first path terminal 301, the first control terminal 302 and alternate path end 303.Switch
The first path terminal 301 of chip U2 receives supply voltage VCC_BAR, the first control terminal 302 and the control chip of switch chip U2
The enabled output end 202 of U1 is connected.
In a wherein embodiment, control chip U1 can be, but not limited to be model N76E003 integrated chip, control
Signal input part 201 processed is P0_7/RXD/AIN2 pin.Enabled output end 202 is AIN7/CLO/IC1/PWM1/P1_1 pin.
In a wherein embodiment, switch chip U2 can be, but not limited to be model AON7423 PMOS
(positive channel Metal Oxide Semiconductor) pipe integrated chip.The first path terminal of switch chip U2
301 be source electrode, and alternate path end 303 is drain electrode, and the first control terminal 302 is grid.In other embodiments, switch chip U2
It may be other models or other types of integrated chip.
Specifically, when first switching element SW1 is connected, control signal input 201 receives high level signal, because
This, the enabled output end 202 of control chip U1 exports the first control terminal 302 of pulse-modulated signal to switch chip U2, thus
So that the first control terminal 302 of switch chip U2 is receiving significant level (such as the significant level of PMOS tube is low level)
When pulse width modulating signal, controls the first path terminal 301 and alternate path end 303 is connected, so that alternate path end 303
Output services voltage VOUT.
In a wherein embodiment, the control signal input 201 of control chip U1 passes through current-limiting resistance R2 and the
One switch element SW1 receives supply voltage VCC_BAR；And/or the first control terminal 302 of switch chip U2 passes through current-limiting resistance R3
It is connected with the enabled output end 202 of control chip U1.
In a wherein embodiment, control chip U1 further includes the first power supply receiving end 203 and the first ground terminal
204.The the first power supply receiving end 203 for controlling chip U1 receives supply voltage VCC_BAR by the first filter resistance R4, and passes through
First filter capacitor C1 and the second filter capacitor C2 in parallel is connected with the first ground terminal 204 of control chip U1.
In a wherein embodiment, the first power supply receiving end 203 and the first ground terminal 204 can be, but not limited to distinguish
For the VDD pin and GND pin of N76E003 integrated chip.
In a wherein embodiment, power supply circuit further includes the resistance detection electricity being electrically connected with switching circuit 300
Road 500, resistance detecting circuit 500 are used to detect the resistance value of the working equipment 400 of connection；Switching circuit 300 is used for according to electricity
Supply voltage VCC_BAR is converted to operating voltage VOUT corresponding to resistance value by the resistance value that resistance detection circuit 500 detects.
In a wherein embodiment, resistance detecting circuit 500 includes the first current-limiting resistance R5, the second current-limiting resistance
R6, the first detection resistance R7, the second detection resistance R8, third detection resistance R9, third filter capacitor C3, the 4th filter capacitor C4
And second switch element SW2；The third path end of second switch element SW2 receives supply voltage VCC_BAR, and with the first current limliting
The first end of resistance R5 is connected, and the second control terminal of second switch element SW2 is connected with the first end of the second current-limiting resistance R6, the
The fourth passage end of two switch element SW2 is connected with the first end of the first detection resistance R7；The second end of first current-limiting resistance R5
It is connected with the second end of the second current-limiting resistance R6；The first end of second detection resistance R8 is grounded by third filter capacitor C3, the
The second end of two detection resistance R8 is connected with the second end of the first detection resistance R7, and is connected with working equipment 400；Third detection
The first end of resistance R9 is grounded by the 4th filter capacitor C4, the second end and second switch element SW2 of third detection resistance R9
Fourth passage end be connected.
In a wherein embodiment, power supply circuit further includes detection enable signal output end 205, the first current receiv
The 206, second current receiv end 207 is held, detection enable signal output end 205 is connected with the second end of the first current-limiting resistance R5；The
One current receiv end 206 is connected with the first end of the second detection resistance R8；Second current receiv end 207 and third detection resistance R9
First end be connected.In one embodiment, enable signal output end 205, the first current receiv end 206, the second electric current are detected
Receiving end 207 can with but be not limited to be control chip U1 port.
In a wherein embodiment, enable signal output end 205, the first current receiv end 206, the second electric current are detected
Receiving end 207 can be, but not limited to P0_5/PWM2/IC6/T0/AIN4 pin, the AIN5/ of respectively N76E003 integrated chip
STADC/IC3/PWM3/P0_4 pin, AIN6/IC5/PWM5/P0_3 pin.
In a wherein embodiment, second switch element SW2 can be PNP type triode, second switch element SW2
Third path end be emitter, the second control terminal of second switch element SW2 is base stage, the 4th of second switch element SW2 the
Path terminal is collector.In other embodiments, second switch element SW2 may be other types of transistor for example
PMOS tube etc..It is illustrated so that second switch element SW2 is PNP type triode as an example below.Specifically, when first switch member
When part SW1 is not turned on i.e. cut-off, the detection enable signal output end 205 of control chip U1 exports low level signal, so that
Second switch element SW2 conducting, and the first current receiv end 206 of control chip U1 and the second current receiv end 207 connect respectively
The electric current for flowing through the second detection resistance R8 and third detection resistance R9 is received, and according to the first current receiv end 206 and the second electricity
The current differential that stream receiving end 207 receives obtains the resistance value of such as atomizer of working equipment 400.
Specifically, the power supply circuit of the present embodiment can use control chip U1 output pulse width modulated signal to opening
Chip U2 is closed, so that switch chip U2 is according to pulse width modulating signal by the supply voltage of ferric phosphate lithium cell 100
VCC_BAR is converted into operating voltage VOUT, and operating voltage VOUT is that the working equipment 400 being connected with power supply circuit works normally
When voltage, then such as atomizer of working equipment 400 can work normally always after receiving operating voltage VOUT.This implementation
The power supply circuit of example is due to only with control chip U1 and switch chip U2 energy output services voltage VOUTVOUT, knot
Structure is simple.In addition, in the present embodiment, can use the first current-limiting resistance R5 and the second current-limiting resistance R6 and carry out current-limiting protection,
To prevent circuit from damaging, so that the stability of power supply circuit enhances.
The power supply circuit of the present embodiment, due to only with control chip U1 and switch chip U2 energy output services voltage
VOUTVOUT, therefore structure is simple.The enable signal that switching circuit 300 is exported according to control circuit 200, by ferric phosphate lithium cell
The 100 supply voltage VCC_BAR provided are converted to operating voltage VOUT and export to such as atomizer of working equipment 400, power supply electricity
Road has very high safety, and has saved cost.
3rd embodiment
Fig. 3 is the circuit connection diagram of the indicating circuit 600 of the power supply circuit of the utility model 3rd embodiment.Such as Fig. 3 institute
Showing, the present embodiment is essentially identical with second embodiment, the difference is that: control circuit 200 further includes at least one instruction
Lamp control terminal 208, each indicator light control terminal 208 are connected with indicating circuit 600.
Specifically, indicating circuit 600 includes at least one third current-limiting resistance R10, at least one first light emitting diode
The cathode of D1, each first light emitting diode D1 pass through a third current-limiting resistance R10 and 208 phase of indicator light control terminal
Even, the anode of each first light emitting diode D1 receives supply voltage VCC_BAR.
The power supply circuit of the present embodiment is also connected with indicating circuit 600, and can be shone by the control of indicator light control terminal 208
Diode D1 is lighted, to indicate the electricity of ferric phosphate lithium cell 100.Switching circuit 300 exports enabled according to control circuit 200
The supply voltage VCC_BAR that ferric phosphate lithium cell 100 provides is converted to operating voltage VOUT and exported to working equipment by signal
400 such as atomizers, power supply circuit has very high safety, and has saved cost.
Fourth embodiment
The present embodiment provides a kind of electronic cigarette, electronic cigarette includes the power supply circuit in above-described embodiment.Wherein, using phosphoric acid
Lithium iron battery 100 provides supply voltage VCC_BAR, can solve the lithium batteries such as cobalt acid lithium battery because super-charge super-discharge and short circuit etc. operate
It is improper and exist burning, explosion etc. security risks, ferric phosphate lithium cell 100 itself can anti-overcharge overdischarge therefore can not
With corresponding battery protecting circuit is connected, circuit is simplified.
In a wherein embodiment, electronic cigarette further includes charging circuit 700, charging circuit 700 and power supply circuit phase
Even, charging circuit 700 includes connector J1, charging chip U3.Referring to FIG. 4,
Fig. 4 is the circuit connection diagram of the charging circuit 700 of the utility model fourth embodiment.Charging circuit 700 is for connecing
External power supply is received, and exports the anode of charging voltage to ferric phosphate lithium cell 100.Wherein, charging circuit 700 can also be with control
Circuit 200 be electrically connected, obtain external power supply connection and charging circuit 700 working condition (such as charging in, fill
Electricity does not start or charges the states such as to be completed).
Specifically, charging chip U3 includes second source receiving end 701, charging voltage output end 702 and charging instruction end
703, second source receiving end 701 is connected by connector J1 with external power supply, also the first end phase with the first divider resistance R11
Even.The second end of first divider resistance R11 is connected with the external interface test side 209 of control circuit 200.Second divider resistance
The first end of R12 is connected with the second end of the first divider resistance R11, and the second end ground connection of the second divider resistance R12 then controls electricity
Voltage on the external interface test side 209 on road 200 is the electricity of concatenated first divider resistance R11 and the second divider resistance R12
Resistance partial pressure, can determine whether external power supply is connected on power supply circuit according to electric resistance partial pressure.Charging voltage output end 702 is used for
Export the anode of charging voltage to ferric phosphate lithium cell 100.Charging instruction end 703 passes through the 4th current-limiting resistance R13 and charging electricity
It presses output end 702 to be connected, is also connected with the charging instruction input terminal 210 of control circuit 200, then the charging of control circuit 200 refers to
Show that input terminal 210 can determine charging electricity by the voltage levels of 703 output signal of charging instruction end of reception charging chip U3
The working condition on road 700, such as the charging instruction end 703 of charging chip U3 export low level, indicate that 700 state of charging circuit is
In charging；The charging instruction end 703 of charging chip U3 exports high level, indicates that 700 state of charging circuit is uncharged or charging
It completes.In one embodiment, external interface test side 209, charging instruction end 703 can with but be not limited to be control chip U1
Port.
In a wherein embodiment, charging chip U3 be can be, but not limited to as BQ24040 integrated chip, second source
Receiving end 701, charging voltage output end 702 and charging instruction end 703 are respectively that IN pin, the OUT of BQ24040 integrated chip draw
Foot andPin.
In a wherein embodiment, electronic cigarette includes atomizer, after atomizer receives operating voltage VOUT, according to work
Make voltage VOUT to be atomized so that user sucks aerosol formation matrix, i.e., the atomizer of the present embodiment is above-described embodiment
One of working equipment 400.Specifically, aerosol formed matrix can with but be not limited to tobacco juice, such as numb cream, tobacco etc.
Deng.
The electronic cigarette of the present embodiment, the enabled letter that the switching circuit 300 in power supply circuit is exported according to control circuit 200
Number, the supply voltage VCC_BAR that ferric phosphate lithium cell 100 provides is converted into operating voltage VOUT and is exported to working equipment 400
Such as atomizer, power supply circuit has very high safety, and has saved cost.
More than, it is only the preferred embodiment of the utility model, limit in any form not is made to the utility model
System, although the utility model has been disclosed with preferred embodiment as above, is not intended to limit the utility model, any to be familiar with sheet
Technical professional is not departing within the scope of technical solutions of the utility model, does when using the technology contents of the disclosure above
A little change or it is modified to the equivalent embodiment of equivalent variations out, but all without departing from the content of the technical scheme of the utility model, according to
According to the technical essence of the utility model any simple modification, equivalent change and modification to the above embodiments, still fall within
In the range of technical solutions of the utility model.
Claims (10)
1. a kind of power supply circuit, which is characterized in that including ferric phosphate lithium cell (100), control circuit (200) and switching circuit
(300), the switching circuit (300) is connected with the ferric phosphate lithium cell (100) and the control circuit (200) respectively, institute
The enable signal that switching circuit (300) is exported according to the control circuit (200) is stated, the ferric phosphate lithium cell (100) is mentioned
The supply voltage of confession is converted to operating voltage and exports to working equipment (400).
2. power supply circuit as described in claim 1, which is characterized in that the control circuit (200) includes control chip (U1),
The control chip (U1) includes control signal input (201), enabled output end (202), the control of control chip (U1)
Signal input part (201) processed receives the supply voltage by first switching element, and is grounded by initial ground resistance (R1).
3. power supply circuit as claimed in claim 2, which is characterized in that the control chip (U1) further includes that the first power supply receives
Hold (203) and the first ground terminal (204)；
First power supply receiving end (203) of control chip (U1) receives the power supply electricity by the first filter resistance (R4)
Pressure, and pass through the first ground connection of the first filter capacitor (C1) and the second filter capacitor (C2) in parallel and control chip (U1)
(204) are held to be connected.
4. power supply circuit as claimed in claim 2, which is characterized in that the switching circuit (300) includes switch chip (U2),
The switch chip (U2) includes the first path terminal (301), the first control terminal (302) and alternate path end (303), the switch
The first path terminal (301) of chip (U2) receives the supply voltage, the first control terminal (302) of the switch chip (U2) with
The enabled output end (202) of control chip (U1) is connected, and the alternate path end (303) of the switch chip (U2) exports institute
State operating voltage.
5. power supply circuit as described in claim 1, which is characterized in that the power supply circuit further includes and the switching circuit
(300) resistance detecting circuit (500) being electrically connected, the resistance detecting circuit (500) are used to detect the work of connection
The resistance value of equipment (400)；
The resistance value that the switching circuit (300) is used to be detected according to the resistance detecting circuit (500) is electric by the power supply
Pressure is converted to operating voltage corresponding to the resistance value.
6. power supply circuit as claimed in claim 5, which is characterized in that the resistance detecting circuit (500) includes the first current limliting
Resistance (R5), the second current-limiting resistance (R6), the first detection resistance (R7), the second detection resistance (R8), third detection resistance (R9),
Third filter capacitor (C3), the 4th filter capacitor (C4) and second switch element；
The third path end of the second switch element receives the supply voltage, and the with first current-limiting resistance (R5)
One end is connected, and the second control terminal of the second switch element is connected with the first end of second current-limiting resistance (R6), described
The fourth passage end of second switch element is connected with the first end of first detection resistance (R7)；First current-limiting resistance
(R5) second end is connected with the second end of second current-limiting resistance (R6)；
The first end of second detection resistance (R8) is grounded by the third filter capacitor (C3), second detection resistance
(R8) second end is connected with the second end of first detection resistance (R7), and is connected with working equipment (400)；
The first end of the third detection resistance (R9) is grounded by the 4th filter capacitor (C4), the third detection resistance
(R9) second end is connected with the fourth passage end of the second switch element.
7. power supply circuit as claimed in claim 6, which is characterized in that the power supply circuit further includes detection enable signal output
Hold (205), the first current receiv end (206), the second current receiv end (207), the detection enable signal output end (205) and
The second end of first current-limiting resistance (R5) is connected；First current receiv end (206) and second detection resistance
(R8) first end is connected；Second current receiv end (207) is connected with the first end of the third detection resistance (R9).
8. power supply circuit as described in claim 1, which is characterized in that the control circuit (200) further includes that at least one refers to
Show lamp control terminal (208), each indicator light control terminal (208) is connected with indicating circuit (600)；
Wherein, the indicating circuit (600) includes at least one third current-limiting resistance (R10), at least one first light-emitting diodes
It manages (D1), the cathode of each first light emitting diode (D1) is controlled by a third current-limiting resistance (R10) and an indicator light
(208) are held to be connected, the anode of each first light emitting diode (D1) receives the supply voltage.
9. a kind of electronic cigarette, which is characterized in that the electronic cigarette includes the power supply electricity as described in claim 1 to 8 any one
Road.
10. electronic cigarette as claimed in claim 9, which is characterized in that including charging circuit (700), the charging circuit (700)
Including connector (J1), charging chip (U3)；
The charging chip (U3) includes second source receiving end (701), charging voltage output end (702) and charging instruction end
(703), the second source receiving end (701) is connected by the connector (J1) with external power supply, also electric with the first partial pressure
The first end for hindering (R11) is connected；
External interface test side (209) phase of the second end of first divider resistance (R11) and the control circuit (200)
Even；
The first end of second divider resistance (R12) is connected with the second end of first divider resistance (R10), second partial pressure
The second end of resistance (R12) is grounded；
The charging voltage output end (702) is used to export the anode of charging voltage to the ferric phosphate lithium cell (100)；
The charging instruction end (703) is connected by the 4th current-limiting resistance (R13) with the charging voltage output end (702), also
It is connected with the charging instruction input terminal (210) of the control circuit (200).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820706734.5U CN208445301U (en) | 2018-05-10 | 2018-05-10 | A kind of power supply circuit and electronic cigarette |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820706734.5U CN208445301U (en) | 2018-05-10 | 2018-05-10 | A kind of power supply circuit and electronic cigarette |
Publications (1)
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109814458A (en) * | 2019-02-14 | 2019-05-28 | 深圳朗特智能控制股份有限公司 | Low-power consumption standby control circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109814458A (en) * | 2019-02-14 | 2019-05-28 | 深圳朗特智能控制股份有限公司 | Low-power consumption standby control circuit |
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