CN203339772U - Electronic cigarette USB charger - Google Patents
Electronic cigarette USB charger Download PDFInfo
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- CN203339772U CN203339772U CN201320442014XU CN201320442014U CN203339772U CN 203339772 U CN203339772 U CN 203339772U CN 201320442014X U CN201320442014X U CN 201320442014XU CN 201320442014 U CN201320442014 U CN 201320442014U CN 203339772 U CN203339772 U CN 203339772U
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- 239000003571 electronic cigarette Substances 0.000 title claims abstract description 116
- 238000001514 detection method Methods 0.000 claims description 35
- 238000000034 method Methods 0.000 claims description 18
- 230000005669 field effect Effects 0.000 claims description 8
- 239000003990 capacitor Substances 0.000 description 20
- 238000010586 diagram Methods 0.000 description 12
- 239000004065 semiconductor Substances 0.000 description 7
- 230000001276 controlling effect Effects 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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Abstract
The utility model discloses an electronic cigarette USB charger. The electronic cigarette USB charger comprises a first interface (10) which is connected with an external power supply and provides a charging power supply, a second interface (40) which is connected with an external electronic cigarette battery pole, a built-in battery (30) and a control module (20). The control module (20) is respectively connected with the first interface (10), the second interface (40) and the built-in battery (30). The control module (20) is used for simultaneously charging the electronic cigarette battery pole and the built-in battery (30) through the external power supply according to the access state of the external power supply at the first interface (10), or charges the electronic cigarette battery pole by controlling the built-in battery (30). The electronic cigarette USB charger provided by the utility model can effectively charge an electronic cigarette under the emergent condition that the external power supply is unavailable, and has the advantages of convenient use and high user experience.
Description
Technical field
The utility model relates to the electronic cigarette field, more particularly, relates to a kind of electronic cigarette USB charger.
Background technology
Usually, existing electronic cigarette mainly relies on rechargeable battery to be powered, and because the electric weight of storing in rechargeable battery is limited, when electric weight exhausts, need to be charged to it, and the USB charger in the advantage of carrying and using, has obtained application comparatively widely with it.
Yet existing USB charger is because inside does not comprise battery, therefore can only rely on the connection external power source to be charged to the battery bar of electronic cigarette, in the situations such as the user goes on a journey out of doors, if lack power supply, can not be charged to electronic cigarette, make the user can't use easily electronic cigarette, can not meet user's demand.
The utility model content
The technical problems to be solved in the utility model is, can only be in the situation that the defect of the battery bar of electronic cigarette being charged by the external power source access provides a kind of electronic cigarette USB charger for the above-mentioned USB charger of prior art.
The utility model solves the technical scheme that its technical problem adopts: construct a kind of electronic cigarette USB charger, comprising:
For being connected with external power source and the first interface of charge power supply being provided, reach the second interface be connected for the electronic cigarette battery bar with outside, also comprise internal battery and control module;
Described control module is connected with described first interface, the second interface, internal battery respectively;
Described control module is for the access state of the external power source according to described first interface place, described electronic cigarette battery bar and internal battery are charged by described external power source simultaneously, or by controlling described internal battery, described electronic cigarette battery bar is charged.
Electronic cigarette USB charger of the present utility model also comprises that described charge management module is connected between first interface and internal battery for controlling the charge management module of described external power source to described internal battery charging.
In electronic cigarette USB charger of the present utility model, described charge management module comprises charge management circuit chip, the first electric capacity, described charge management circuit chip BAT end is electrically connected to an end of described the first electric capacity and the positive pole of described internal battery, and the other end of described the first electric capacity is connected to the negative pole of described internal battery.
In electronic cigarette USB charger of the present utility model, described control module comprises the boost control circuit that is connected to described the second interface, and for preventing that the process that described external power source is charged to described electronic cigarette battery bar from anti-the first diode flowed of electric current occurring, the anodic bonding of described the first diode is to described first interface, and the negative electrode of described the first diode is connected to described boost control circuit.
In electronic cigarette USB charger of the present utility model, described control module also comprises the second diode that the anti-stream of electric current occurs when preventing described internal battery to the charging of the battery bar of described electronic cigarette, the negative electrode of described the second diode is connected with described boost control circuit (201), and the anodic bonding of described the second diode is to the positive pole of described internal battery.
In electronic cigarette USB charger of the present utility model, described control module also comprises the second diode and is connected to the electric power management circuit of described boosting rectifier control module, the anodic bonding of described the second diode is to the positive pole of described internal battery, the negative electrode of described the second diode is connected to described electric power management circuit, and described electric power management circuit is connected to described the second interface through described boosting rectifier control module.
In electronic cigarette USB charger of the present utility model, described boost control circuit comprises the chip that boosts, the second resistance, the second inductance, the second electric capacity and the 3rd diode; The described chip SW end of boosting be electrically connected to described the 3rd diode (positive pole, be connected to an end and described second interface of described the second electric capacity by described the 3rd diode electrically; Described the second resistance and the second inductance have been connected in series successively between the positive pole of the voltage input end of the described chip that boosts and described the 3rd diode.
In electronic cigarette USB charger of the present utility model, described boost control circuit comprises pwm control signal end, the 3rd inductance, field effect transistor, the 3rd resistance, the 5th diode, described pwm control signal end is connected to the grid of described field effect transistor by described the 3rd resistance, the voltage input end of described boost control circuit is connected to the drain electrode of described field effect transistor by described the 3rd inductance, the drain electrode of described field effect transistor is connected to the anode of described the 5th diode, via described the 5th diode, outputs to described the second interface.
In electronic cigarette USB charger of the present utility model, described electric power management circuit comprises: the overvoltage detection module, and the testing result for according to described overvoltage detection module be connected with overvoltage detection module and described boost control circuit is respectively turn-offed the micro-chip processor of described boost control circuit with the charging process that stops described the second interface.
In electronic cigarette USB charger of the present utility model, described electric power management circuit also comprises: be connected to the over-current detection module that the charging current for to described the second interface of described micro-chip processor is detected.
In electronic cigarette USB charger of the present utility model, the model of described micro-chip processor is SN8P2711BAG.
In electronic cigarette USB charger of the present utility model, described charge management module also comprises the charging indicator light that is connected to described charge management circuit chip.
In electronic cigarette USB charger of the present utility model, the model of described charge management circuit chip is VA7204.
In electronic cigarette USB charger of the present utility model, described charging indicator light comprises the first indicator light and the second indicator light, for alternately lighting when charging process and charging complete, realizes that full electricity turns the lamp function, indicates the charged state of described internal battery.
In electronic cigarette USB charger of the present utility model, described the first indicator light is connected to the 5th pin of described charge management circuit chip VA7204, for carry out luminous indication when described internal battery has charged; Described the second indicator light is connected to the 1st pin of described charge management circuit chip VA7204, for the charging process at described internal battery, carries out luminous indication.
In electronic cigarette USB charger of the present utility model, the model of the described chip that boosts is CP2121.
Implement electronic cigarette USB charger of the present utility model, there is following beneficial effect: when making electronic cigarette USB charger of the present utility model externally power supply being charged to electronic cigarette, inner internal battery is charged simultaneously, in the situation that access without external power source, internal battery can directly charge to the battery bar, can effectively meet in the situation that, without external power source user's user demand, can promote the user and experience, better meet user's consumption demand.
The accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the composition frame chart of the first embodiment of electronic cigarette USB charger of the present utility model;
Fig. 2 is the circuit diagram of the embodiment of the electronic cigarette USB charger shown in Fig. 1;
Fig. 3 is the composition frame chart of the second embodiment of electronic cigarette USB charger of the present utility model;
Fig. 4 is the circuit diagram of the embodiment of the USB of electronic cigarette shown in Fig. 3 charger;
Figure 5 shows that the circuit diagram of the 3rd embodiment of electronic cigarette USB charger of the present utility model;
Figure 6 shows that the circuit diagram of the embodiment of the USB of electronic cigarette shown in Fig. 5 charger;
Fig. 7 is the circuit diagram of the first embodiment of the boosting rectifier control module of electronic cigarette USB charger of the present utility model;
Fig. 8 is the circuit diagram of the second embodiment of the boosting rectifier control module of electronic cigarette USB charger of the present utility model;
Fig. 9 is the circuit diagram of the voltage detection module of electronic cigarette USB charger of the present utility model.
Embodiment
Understand for technical characterictic of the present utility model, purpose and effect being had more clearly, now contrast accompanying drawing and describe embodiment of the present utility model in detail.
In embodiment of the present utility model, electronic cigarette USB charger of the present utility model is mainly used in the battery bar of electronic cigarette is charged.
Referring to Fig. 1, it is the composition frame chart of the electronic cigarette USB charger of preferred the first embodiment of the utility model.Electronic cigarette USB charger in embodiment of the present utility model can be charged to the battery bar in electronic cigarette.Electronic cigarette USB charger described in the utility model comprises controller 20 and the first interface 10 be connected with controller 20 respectively, internal battery 30 and the second interface 40.
Described first interface 10, for being connected with external power source, provides charge power supply; The second interface 40 is connected for the electronic cigarette battery bar with outside.Control module 20 is for stating the access state of external power source according to first interface 10 places, described electronic cigarette battery bar and internal battery 30 are charged by described external power source simultaneously, or charged by controlling 30 pairs of described electronic cigarette battery bars of described internal battery.
Wherein external power source is by first interface 10 access USB charger of the present utility model, and 20 pairs of described internal batteries 30 of via controller are charged and via described the second interface, described battery bar charged.In addition, when internal battery 30 accesses without external power source at described first interface 10, via 40 pairs of described electronic cigarette battery bars of described the second interface, charged.
As shown in Figure 2, in the embodiment of the first embodiment of the present utility model, control module 20 mainly comprises a control chip U4, the preferred BL8579 of its model.The adaptor power supplies input of chip U4 connects first interface 10 simultaneously through capacitor C 6 ground connection, the lithium battery incoming end of chip U4 i.e. the positive pole of the 2nd pin connection internal battery 30, be connected to an end of capacitor C 7, the other end of capacitor C 7 is connected with the negative pole of described internal battery 30 simultaneously.The inductance incoming end of chip U4 is to be connected with the first inductance L 1 between the 4th pin and described the 2nd pin; The USB output of chip U4 is connected with the second interface 40, the current settings end, and the 5th pin of BL8579 chip is connected to ground by current-limiting resistance R9.Especially, the resistance of setting resistance R 9 can be used for limiting the size that the second interface 40 is gone out to the charging current of output, the charging current of the corresponding 1A of 1Kohm.In present embodiment, external power source is charged to internal battery by first interface 10 access chip U4, carries out externally charging output through the USB output to the second interface 40 simultaneously.The lithium battery input of the present embodiment chips U4 also arrives ground by series connection divider resistance R7 and protective resistance R8 in addition; protective resistance R8 mono-end ground connection; the other end is connected to the Enable Pin EN that boosts; it is the 3rd pin of the chip U4 of present embodiment; be provided with charge switch K1 between divider resistance R7 and protective resistance R8; K switch 1 is triggered by the electronic cigarette battery bar of access the second interface 40; when the described battery bar of access; K1 connects; chip U4 exports charging voltage; described battery bar is from the second interface 40 is extracted, and K1 disconnects, and chip U4 stops exporting charging voltage.When first interface 10 accesses without external power source, after the second interface 40 inserts electronic cigarette battery bar, internal battery 30 charges to described electronic cigarette battery bar via chip U4.
As shown in Figure 3, in the second embodiment of electronic cigarette USB charger of the present utility model, described electronic cigarette USB charger is except above-mentioned control module 20 and be connected respectively to first interface 10, the second interface 40 and the internal battery 30 of control module 20, also comprises charge management module 50.Charge management module 50 is connected with first interface 10 and internal battery 30 respectively, for controlling described external power source, internal battery 30 is charged.While implementing electronic cigarette USB charger of the present utility model, external power source, by first interface 10 accesses, provides charge power supply to electronic cigarette battery bar through control module 20, through 50 pairs of internal batteries 30 of described charge management module, is charged simultaneously.In the situation that access the USB charger of this utility model without external power source, internal battery 30 can, to control module 20 output charging voltages, be charged to described electronic cigarette battery bar through the second interface 40 by control module 20.
With reference to figure 4, in the embodiment of the second embodiment of electronic cigarette USB charger of the present utility model, charge management module 50 comprises charge management circuit chip U2, the first capacitor C 1, described charge management circuit chip U2BAT end is electrically connected to an end of described the first capacitor C 1 and the positive pole of internal battery 30, and the other end of described the first capacitor C 1 is connected to the negative pole of described internal battery 30.
Further, in the electronic cigarette USB charger in present embodiment, also be provided with the charging indicator light that is connected to charge management circuit chip U2.Described charging indicator light comprises the first indicator light LED1 and the second indicator light LED2, for alternately lighting when charging process and charging complete, realizes that full electricity turns the lamp function, indicates the charged state of described internal battery 30.
Preferably, in electronic cigarette USB charger of the present utility model, the chip that described the second charge management circuit chip U2 adopts is VA7204, with reference to figure 4, the 1st pin is the first charged state output pin, and the 1st pin is connected in series with current-limiting resistor voltage divider R5 and the second indicator light LED2.The 5th pin is the second charged state output pin, and this second charged state output pin is connected in series by the second current-limiting resistor voltage divider R3 and the first indicator light LED1.The chip power supply voltage VCC of the first indicator light LED1 and the equal anodal access chip VA7204 of the second indicator light LED2, negative pole is via described current-limiting resistor voltage divider access chip.When internal battery 30 is charged, the metal-oxide-semiconductor of chip VA7204 inside drags down the 1st pin, and the second indicator light LED2 in the indication of described charged state lights, and when charging completes, the metal-oxide-semiconductor of chip internal is high-impedance state, and the second indicator light LED2 goes out.Described the first indicator light LED1 is connected to the 5th pin of described the second charge management circuit chip VA7204, in charging process, the metal-oxide-semiconductor of chip internal is high-impedance state, the first indicator light keeps extinguishing state, when charging completes, the metal-oxide-semiconductor of chip internal drags down the 5th pin, and the first indicator light LED1 lights, and carries out luminous indication when described internal battery 30 has charged.The the first indicator light LED1 alternately lighted, the second indicator light LED2 can effectively realize that full electricity turns the function of lamp, and the charged state of internal battery 30 is effectively pointed out.The 2nd pin of chip VA7204 is earth terminal, and the 3rd pin is the charging current output, provides charging current to internal battery 30, and controls the burning voltage of described the second charging voltage at for example 4.2V.The 4th pin is the power supply input pin, and the supply power voltage VCC of access chip, powered to chip, the chip power supply voltage VCC generally selected controls as 4.25V-6V, preferred 5V, in the present embodiment, described supply power voltage VCC obtains by the output voltage of first interface 10.The 6th pin is for adjusting charging current, and charging current can be by setting to connecting a resistance between ground at this pin.When this chip, during in the constant current charge state, the level on this pin is defined as 1V.The 6th pin also can be used as the charge switch pin, will between this pin and ground, disconnect, and charger will enter shutdown mode, and charging stops, and the input current of chip is down to below 25uA.Therefore external power source, such as notebook computer, portable power source etc., first interface 10 is rear that chip U2 is powered in access, and described supply power voltage VCC is provided, and by chip U2, controls the charging process to internal battery 30.
With reference to figure 5, schematic diagram for the 3rd embodiment of the present utility model, than the electronic cigarette USB charger shown in Fig. 4, the difference of the present embodiment is, in the present embodiment, electric power management circuit 202 is controlled to 201 pairs of internal battery 30 output voltages of boosting rectifier control module, export the second interface 40 to through described boosting rectifier control module 201, in order to prevent from charging process occurring, electric current is counter to flow, be connected the second diode D2 between internal battery and electric power management circuit 202, the anodic bonding of the second diode D2 is to the positive pole of internal battery 30, the negative electrode of the second diode D2 is connected to electric power management circuit 202, the anodic bonding of the first diode D1 is to first interface 10 similarly, the negative electrode of the first diode D1 is connected to boosting rectifier control module 201.During external power source access first interface 10, except through charging control circuit chip U2, internal battery 30 being charged, the voltage of first interface 10 transfers to after boosting rectifier control module 201 is boosted and exports the second interface 40 to through the first diode D1, and the electronic cigarette battery bar that accesses described the second interface 40 is charged.Described the first diode D1 occurs for preventing process that described external power supply charged to described electronic cigarette battery bar that electric current is counter to flow; In like manner, described the second diode D2 occurs for preventing process that 30 pairs of described electronic cigarette battery bars of described internal battery are charged that electric current is counter to flow.The positive pole of internal battery 30 is connected to electric power management circuit 202 through the second diode D2.Externally power supply is when first interface 10 is charged to electronic cigarette battery bar and internal battery 30 simultaneously, and the 3rd pin output charging voltage of chip U2 is to the positive pole of internal battery 30, and the negative pole of the internal battery 30 of flowing through is to ground.When accessing without external power source, internal battery 30 is connected with the second interface 40 through boosting rectifier control module 201 by the second diode D2, electric power management circuit 202, and the electronic cigarette battery bar that is linked into the second interface 40 by 30 pairs of internal batteries is charged.The electric power management circuit 202 increased in the present embodiment is for realizing the control to boosting rectifier control module 201.
With reference to figure 6, circuit diagram for the embodiment of the 3rd embodiment of electronic cigarette USB charger of the present utility model shown in Fig. 5, electric power management circuit 202 further comprises: the overvoltage detection module 60 that is connected to the second interface 40, and the micro-chip processor U3 be connected with overvoltage detection module 60 and described boost control circuit 201 respectively, described overvoltage detection module 60 is detected for the charging voltage to described the second interface 40, when the result detected during higher than default magnitude of voltage, described micro-chip processor U3 is by turn-offing described boost control circuit 201 to stop the charging process at described the second interface 40 places, the model of described micro-chip processor U3 is SN8P2711BAG.The energization pins of chip U3 the 1st pin connects the positive pole of internal battery 30, and the 2nd pin P0.3 input pin of chip U3 connects overvoltage detection module 60; The 1st pin is power input VDD, connects voltage VCC and connects the 3rd capacitor C 3 ground connection simultaneously; The 4th pin is PWM1 control end output, and the output pwm control signal is to boosting rectifier control module 201; The 10th pin of chip U3 preferably, the 3rd pin of the chip U3 of the present embodiment is connected to the second interface 40 for another input pin P0.4 by connecting an over-current detection module 70, over-current detection module 70 is carried out current detecting and is sent the current detecting result to chip U3 for the second interface 40 to electronic cigarette USB charger of the present utility model, when the result of current detecting, while being the electric current that detects higher than default current value, the 3rd pin is controlled boosting rectifier control module 201 and is disconnected.Be to be understood that, the electric power management circuit 202 of electronic cigarette USB charger of the present utility model also can comprise any one in overvoltage detection module 60 or over-current detection module 70, and the curtage situation detected according to overvoltage detection module 60 or over-current detection module 70 is controlled boosting rectifier control module 201.Be to be understood that in addition the detection site of overvoltage detection module 60 or over-current detection module 70 also is not limited to the output of the second interface 40, can also comprise the output (i.e. the input of the second interface) of boosting rectifier control module 201 or input of boosting rectifier control module 201 etc.
With reference to figure 7, it is the circuit diagram of the first embodiment of boost control circuit 201.In electronic cigarette USB charger of the present utility model, boost control circuit 201 comprises the chip U1 that boosts, the second resistance R 2, the second inductance L 2, the second capacitor C 2 and the 3rd diode D3; The SW end of the described chip U1 that boosts is connected to the anode of described the 3rd diode D3, is electrically connected to an end and second interface 40 of described the second capacitor C 2 by described the 3rd diode D3; The second resistance R 2 and the second inductance L 2 have been connected in series successively between the voltage input end VIN of the described chip U1 that boosts and the anode of described the 3rd diode D3.The chip model of boosting adopted in the present embodiment is CP2121, can select in addition the chip that boosts that model is MT3608 etc.As shown in Figure 7, boost the 1st pin of chip U1 is that switch draws pin; The 2nd pin is the grounding lead pin; The 3rd pin is that feedback voltage draws pin; The 4th pin is for enabling pin, and when the voltage of the 4th pin, during higher than 1.4V, the chip U1 that boosts starts working, and lower than 0.4V, the chip U1 that boosts enters closed condition; The 5th pin is that overvoltage protection draws pin; The 6th pin is that chip operating voltage draws pin.
Referring to Fig. 7, the 1st pin of the chip U1 that boosts connects an end of inductance L 2 and connects the anode of the 3rd diode D3; The end of the other end connecting resistance R2 of inductance L 2; Another termination VIN of resistance R 2 holds and connects the 6th pin; The 2nd pin ground connection, and an end of connection capacitor C 2; The negative electrode of another terminating diode D3 of capacitor C 2 and VOUT end; One end ground connection of resistance R 12 and U1 the 2nd pin; One termination VOUT end of resistance R 13 and the negative electrode of diode D3, the end of other end connecting resistance R12 and the 3rd pin; The 4th pin meets enable voltage providing end UP_EN.Wherein, VIN end connects input voltage, the negative electrode of the first diode D1 in the first embodiment of above-mentioned electronic cigarette USB charger for example, and the VOUT end is connected to the second interface 40.
Referring to Fig. 8, it is the circuit diagram of the second embodiment of the utility model boost control circuit.In the second embodiment of boost control circuit of the present utility model, boost control circuit adopts the PWM booster circuit.This boost control circuit comprises: metal-oxide-semiconductor Q1, resistance R 6, resistance R 1, capacitor C 4, capacitor C 5, inductance L 3 the 5th diode D5.Wherein, the grid of metal-oxide-semiconductor Q1 by resistance R 1 connect PWM end, source ground and by resistance R 6 connect the PWM end, drain electrode connects an end of inductance L 3 and the anode of diode D5; Another termination VIN end of inductance L 3; The negative electrode of diode D5 connects the positive pole of capacitor C 4, an end and the VOUT end of capacitor C 5; The minus earth of capacitor C 4; The other end ground connection of capacitor C 5.
Wherein, the VIN end connects input voltage, for example negative electrode of the first diode D12 in the second embodiment of above-mentioned electronic cigarette USB charger.The VOUT end is connected to the second interface 40.
The pulse signal output end that the pwm control signal end is micro-chip processor U3.Control module 20 preferably includes the chip with PWM output function, control module 20 is by the conducting state of the Duty ratio control metal-oxide-semiconductor Q1 of the pulse signal of the actual charging voltage of detection and the output of charging current regulating impulse signal output part, to realize the adjusting to charging voltage.
In electronic cigarette USB charger of the present utility model, described USB charger also comprises: be connected to the overvoltage detection module 60 on control module 20, for charging voltage is detected, when the result detected, during higher than default magnitude of voltage, the charging circuit of controlling place disconnects.
The circuit diagram of the overvoltage detection module that is the utility model embodiment referring to Fig. 9.The overvoltage detection module carries out voltage detecting and sends the voltage detecting result to control module 20 for the charging circuit to electronic cigarette USB charger of the present utility model, when the result of voltage detecting, while being the voltage that detects higher than default magnitude of voltage, control module 20 is controlled charging circuits and is disconnected.Voltage when preferably, the overvoltage detection module of the utility model embodiment can adopt the method for electric resistance partial pressure to detect electronic cigarette USB charger to the charging of the battery bar of electronic cigarette and/or the voltage during to internal battery 30 charging of electronic cigarette USB charger.Described overvoltage detection module 70 comprises resistance R 11, resistance R 10, capacitor C 11.Wherein a terminating resistor R10 of resistance R 11 and OUT_1 hold, the positive pole of another termination capacitor C 11 and OUT_2 end; One termination OUT_1 end of resistance R 10, other end ground connection; One termination OUT2 end of capacitor C 11, other end ground connection.OUT_1 end be the positive terminal of electronic cigarette battery bar to be charged, and OUT_2 holds and is charging current or voltage detecting end, can hold voltage on the resistance R 10 measured to using by OUT_2 and calculate charging current as charging voltage or by the voltage on resistance R 11.Preferably, the over-current detection module 70 of the utility model embodiment also can adopt the circuit shown in above-mentioned Fig. 9.Voltage on the resistance R 11 that can measure by the end of the OUT_2 in Fig. 9 calculates charging current, and during overcurrent, control module 20 is turn-offed charging circuit.
USB charger of the present utility model, can also comprise the low pressure detection module (not shown) that is connected to micro-chip processor U3, carry out voltage detecting and send the voltage detecting result to control module 20 for the charging circuit to electronic cigarette USB charger of the present utility model, when the result of voltage detecting, while being charging voltage lower than default magnitude of voltage, control module 20 is controlled charging circuits and is disconnected.Preferably, the low pressure detection module of the utility model embodiment can adopt the principle identical with above-mentioned overvoltage detection module, and whether the voltage while adopting the method for electric resistance partial pressure to detect charging is lower than the threshold value of setting.If lower than the threshold value of setting, turn-off charging.
Implement electronic cigarette USB charger of the present utility model, can be when the access external power source be charged to electronic cigarette battery bar, internal battery 30 to this electronic cigarette USB charger inside is charged, and has the function that full electricity turns lamp, and charged state is effectively indicated; In the situation that without external power source, once electronic cigarette USB charger of the present utility model is connected with electronic cigarette battery bar, internal battery 30 will be to electronic cigarette battery bar power supply, with real first in emergency circumstances to the charging process of electronic cigarette, easy to use, better user experience.And in the process of utilizing external power source to be charged to electronic cigarette the user to the charging process of the internal battery 30 of electronic cigarette USB charger, automatically complete, convenient and swift.
The above is described embodiment of the present utility model by reference to the accompanying drawings; but the utility model is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; rather than restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; not breaking away from the scope situation that the utility model aim and claim protect, also can make a lot of forms, within these all belong to protection of the present utility model.
Claims (10)
1. an electronic cigarette USB charger, is characterized in that, comprising:
For being connected with external power source and the first interface (10) of charge power supply being provided, reach the second interface (40) be connected for the electronic cigarette battery bar with outside, also comprise internal battery (30) and control module (20);
Described control module (20) is connected with described first interface (10), the second interface (40), internal battery (30) respectively;
Described control module (20) is for the access state of the external power source located according to described first interface (10), described electronic cigarette battery bar and internal battery (30) are charged by described external power source simultaneously, or by controlling described internal battery (30), described electronic cigarette battery bar is charged.
2. electronic cigarette USB charger according to claim 1, it is characterized in that, also comprise that described charge management module (50) is connected between first interface (10) and internal battery (30) for controlling the charge management module (50) of described external power source to described internal battery (30) charging.
3. electronic cigarette USB charger according to claim 2, it is characterized in that, described charge management module (50) comprises charge management circuit chip (U2), the first electric capacity (C1), described charge management circuit chip (U2) BAT end is electrically connected to an end of described the first electric capacity (C1) and the positive pole of described internal battery (30), and the other end of described the first electric capacity (C1) is connected to the negative pole of described internal battery (30).
4. electronic cigarette USB charger according to claim 3, it is characterized in that, described control module (20) comprises the boost control circuit (201) that is connected to described the second interface (40), and for preventing that the process that described external power source is charged to described electronic cigarette battery bar from anti-the first diode (D1) flowed of electric current occurring, the anodic bonding of described the first diode (D1) is to described first interface (10), and the negative electrode of described the first diode (D1) is connected to described boost control circuit (201).
5. electronic cigarette USB charger according to claim 4, it is characterized in that, described control module (20) also comprises the second diode (D2) that the anti-stream of electric current occurs when preventing described internal battery (30) to the charging of the battery bar of described electronic cigarette, the negative electrode of described the second diode (D2) is connected with described boost control circuit (201), and the anodic bonding of described the second diode (D2) is to the positive pole of described internal battery (30).
6. electronic cigarette USB charger according to claim 4, it is characterized in that, described control module (20) also comprises the second diode (D2) and is connected to the electric power management circuit (202) of described boosting rectifier control module (201), the anodic bonding of described the second diode (D2) is to the positive pole of described internal battery (30), the negative electrode of described the second diode (D2) is connected to described electric power management circuit (202), and described electric power management circuit (202) is connected to described the second interface (40) through described boosting rectifier control module (201).
7. according to the described electronic cigarette USB of claim 4-6 any one charger, it is characterized in that, described boost control circuit (201) comprises the chip that boosts (U1), the second resistance (R2), the second inductance (L2), the second electric capacity (C2) and the 3rd diode (D3); The described chip that boosts (U1) SW end is electrically connected to the positive pole of described the 3rd diode (D3), is electrically connected to an end and described second interface (40) of described the second electric capacity (C2) by described the 3rd diode (D3); Described the second resistance (R2) and the second inductance (L2) have been connected in series successively between the positive pole of the voltage input end of the described chip that boosts (U1) and described the 3rd diode (D3).
8. according to the described electronic cigarette USB of claim 4-6 any one charger, it is characterized in that, described boost control circuit (201) comprises the pwm control signal end, the 3rd inductance (L3), field effect transistor (Q1), the 3rd resistance (R3), the 5th diode (D5), described pwm control signal end is connected to the grid of described field effect transistor (Q1) by described the 3rd resistance (R3), the voltage input end of described boost control circuit is connected to the drain electrode of described field effect transistor (Q1) by described the 3rd inductance (L3), the drain electrode of described field effect transistor (Q1) is connected to the anode of described the 5th diode (D5), output to described the second interface (40) via described the 5th diode (D5).
9. electronic cigarette USB charger according to claim 6, it is characterized in that, described electric power management circuit (202) comprising: overvoltage detection module (60), and the testing result for according to described overvoltage detection module (60) be connected with overvoltage detection module (60) and described boost control circuit (201) is respectively turn-offed described boost control circuit (201)) to stop the micro-chip processor (U3) of the charging process that described the second interface (40) locates.
10. electronic cigarette USB charger according to claim 9, it is characterized in that, described electric power management circuit (202) also comprises: be connected to the over-current detection module (70) that the charging current for to described the second interface (40) of described micro-chip processor (U3) is detected.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320442014XU CN203339772U (en) | 2013-07-23 | 2013-07-23 | Electronic cigarette USB charger |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320442014XU CN203339772U (en) | 2013-07-23 | 2013-07-23 | Electronic cigarette USB charger |
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| CN203339772U true CN203339772U (en) | 2013-12-11 |
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| CN201320442014XU Expired - Fee Related CN203339772U (en) | 2013-07-23 | 2013-07-23 | Electronic cigarette USB charger |
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Owner name: KIMREE TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: XIANG ZHIYONG Effective date: 20140915 |
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