CN113725980A - Charging base, electronic cigarette and charging method - Google Patents

Charging base, electronic cigarette and charging method Download PDF

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Publication number
CN113725980A
CN113725980A CN202111114759.9A CN202111114759A CN113725980A CN 113725980 A CN113725980 A CN 113725980A CN 202111114759 A CN202111114759 A CN 202111114759A CN 113725980 A CN113725980 A CN 113725980A
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CN
China
Prior art keywords
electrode
voltage
charging
mos tube
circuit
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CN202111114759.9A
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Chinese (zh)
Inventor
朱旦
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Shenzhen Woody Vapes Technology Co Ltd
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Shenzhen Woody Vapes Technology Co Ltd
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Application filed by Shenzhen Woody Vapes Technology Co Ltd filed Critical Shenzhen Woody Vapes Technology Co Ltd
Priority to CN202111114759.9A priority Critical patent/CN113725980A/en
Publication of CN113725980A publication Critical patent/CN113725980A/en
Priority to PCT/CN2022/095059 priority patent/WO2023045376A1/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
    • H02J7/0045—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction concerning the insertion or the connection of the batteries
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/90—Arrangements or methods specially adapted for charging batteries thereof
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00308—Overvoltage protection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0034—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using reverse polarity correcting or protecting circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The invention discloses a charging base, comprising: the charging circuit is connected with a first electrode and a second electrode, and the first electrode and the second electrode are used for outputting charging voltage to a charged device; the charging circuit is used for receiving an input voltage, converting the input voltage to generate a charging voltage under the condition that the position between the first electrode and the second electrode is in a first state, and regulating the position between the first electrode and the second electrode to be in the first state and then converting the input voltage to generate the charging voltage under the condition that the position between the first electrode and the second electrode is in a second state. When the charged device is charged through the charging circuit, the charging circuit converts the electrode polarities of the first electrode and the second electrode to be consistent with the electrode polarity of the charged device, so that the first electrode and the second electrode convert the input voltage to generate a charging voltage. The charged equipment or the charging base does not need to be rotated again, and the position of the electrode does not need to be changed, so that the charged equipment can be normally charged.

Description

Charging base, electronic cigarette and charging method
Technical Field
The invention relates to the technical field of electronic cigarettes, in particular to a charging base, an electronic cigarette and a charging method.
Background
The electron cigarette is a non-burning cigarette type substitution product, including electron cigarette body and charging base, among the prior art, the inside battery of electron cigarette body all has its fixed positive pole and negative pole with charging base, when charging through charging base, the positive pole that often can have the battery of electron cigarette and negative pole and charging base's the positive pole and the negative pole condition of reverse connecing, just at this time can't charge the operation, need rotate electron cigarette or charging base again, with the position that changes the electrode, make the electrode polarity of the two unanimous, and then realize the normal charging to the electron cigarette body, will reduce like this and use experience the sense, bring inconvenience for charging process.
Disclosure of Invention
In view of the above, it is necessary to provide a charging base for solving the above problems.
The invention provides a charging base, comprising:
a first electrode and a second electrode for outputting a charging voltage to the charged device; the first electrode and the second electrode have at least a first state and a second state therebetween; and
and the charging circuit is connected with the first electrode and the second electrode and used for receiving an input voltage, converting the input voltage to generate the charging voltage under the condition that the position between the first electrode and the second electrode is in the first state, adjusting the position between the first electrode and the second electrode to be in the first state under the condition that the position between the first electrode and the second electrode is in the second state, and then converting the input voltage to generate the charging voltage.
In one embodiment, the first state is: the first electrode is a negative electrode, and the second electrode is a positive electrode;
the second state is: the first electrode is a positive electrode, the voltage to ground of the first electrode is smaller than the input voltage, and the second electrode is a negative electrode.
In one embodiment, the charging circuit includes:
the voltage division circuit is used for receiving the input voltage, dividing the input voltage and outputting a divided voltage; and
and the level output circuit is connected with the voltage division circuit and is used for enabling the first electrode and the second electrode to be a positive electrode and a negative electrode respectively based on the divided voltage.
In one embodiment, the charging circuit further comprises:
and the surge protection circuit is connected with the voltage division circuit and the level output circuit and is used for absorbing surges and spikes generated when the level output circuit is instantly short-circuited.
In one embodiment, the voltage divider circuit includes: the circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor and a fifth resistor;
the first end of the first resistor is connected with the external power supply, and the second end of the first resistor is connected with the first ends of the second resistor and the third resistor;
the second end of the second resistor is connected with the level output circuit and the first end of the fifth resistor;
the second end of the third resistor is connected with the level output circuit and the first end of the fourth resistor;
and the second end of the fourth resistor and the second end of the fifth resistor are both grounded.
In one embodiment, the level output circuit includes: the MOS transistor comprises a first MOS transistor, a second MOS transistor, a third MOS transistor and a fourth MOS transistor;
the grid electrode of the first MOS tube is connected with the voltage division circuit and the drain electrode of the second MOS tube, the source electrode of the first MOS tube is connected with the external power supply, and the drain electrode of the first MOS tube is connected with the drain electrode of the third MOS tube;
the grid electrode of the second MOS tube is connected with the voltage division circuit and the drain electrode of the first MOS tube, the source electrode of the second MOS tube is connected with the external power supply, and the drain electrode of the second MOS tube is connected with the drain electrode of the fourth MOS tube;
the grid electrode of the third MOS tube is connected with the second electrode, the source electrode of the third MOS tube is grounded, and the drain electrode of the third MOS tube is connected with the first electrode;
the grid electrode of the fourth MOS tube is connected with the first electrode, the source electrode of the fourth MOS tube is grounded, and the drain electrode of the fourth MOS tube is connected with the second electrode.
In one embodiment, the surge protection circuit includes: a first diode and a second diode;
the anode of the first diode is grounded, and the cathode of the first diode is connected with the drain electrode of the first MOS tube;
the anode of the second diode is grounded, and the cathode of the second diode is connected with the drain of the second MOS tube.
An electronic cigarette, comprising: the charging base and the electronic cigarette body are as described above;
the electron cigarette body includes: a third state is also present between the first electrode and the second electrode;
a clamp circuit configured to clamp a voltage between the first electrode and the second electrode to switch the first electrode and the second electrode from the third state to the second state when the first electrode and the second electrode are in the third state;
and the power supply circuit is connected with the first electrode, the second electrode and a battery positioned in the electronic cigarette body and is used for charging the battery by utilizing the charging voltage.
In one embodiment, the third state is: the first electrode is a positive electrode, the voltage to ground of the first electrode is the input voltage, and the second electrode is a negative electrode.
In one embodiment, the clamping circuit includes a third diode;
the anode of the third diode is connected with the cathode of the power supply circuit, and the cathode of the third diode is connected with the anode of the power supply circuit.
In one embodiment, the power supply circuit includes: the overvoltage protection chip, the fifth MOS tube and the sixth MOS tube;
the input end of the overvoltage protection chip is connected with the voltage output by the charging circuit and is the anode of the power supply circuit, and the output end of the overvoltage protection chip is connected with the grid electrode of the fifth MOS tube;
the source electrode of the fifth MOS tube is grounded, and the drain electrode of the fifth MOS tube is connected with the grid electrode of the sixth MOS tube; and the drain electrode of the sixth MOS tube is connected with the output end of the overvoltage protection chip, and the source electrode of the sixth MOS tube is connected with the battery.
A method of charging, comprising:
when the voltage polarity between the first electrode and the second electrode of the charging base is consistent with the voltage polarity of the battery of the charged device, the first electrode and the second electrode of the charging base output a charging voltage to the charged device;
when the voltage polarity between the first electrode and the second electrode of the charging base is inconsistent with the voltage polarity of the battery, the clamping circuit of the charged device reduces the voltage between the first electrode and the second electrode, then the charging circuit of the charging base converts the voltages of the first electrode and the second electrode so as to adjust the voltage polarity between the first electrode and the second electrode of the charging base to be consistent with the voltage polarity between the positive electrode and the negative electrode of the charged device, and then the first electrode and the second electrode of the charging base output the charging voltage to the charged device.
In one embodiment, after the voltage polarity between the first electrode and the second electrode of the charging base is consistent with the voltage polarity of the battery of the charged device, the charging method further includes:
collecting node voltage of the charged equipment, comparing the node voltage with preset voltage, and if the node voltage is greater than the preset voltage, lightening an indicator lamp on the charged equipment to prompt that the charged equipment is being charged through the charging base;
if the node voltage is smaller than the preset voltage, an indicator lamp is turned off to prompt that the charged equipment is not charged.
The embodiment of the invention has the following beneficial effects:
when the charged device is charged by the charging circuit of the charging base, and the electrode polarities of the first electrode and the second electrode connected to the charging circuit are not consistent with the electrode polarity of the charged device, the charging circuit may convert the electrode polarities of the first electrode and the second electrode into the electrode polarity consistent with the electrode polarity of the charged device, so that the first electrode and the second electrode convert the input voltage to generate the charging voltage required by the charged device. The charged equipment or the charging base does not need to be rotated again, and the position of the electrode does not need to be changed, so that the charged equipment can be normally charged.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Wherein:
FIG. 1 is a block diagram of a charging base in one embodiment;
FIG. 2 is a circuit diagram of a charging base in one embodiment;
figure 3 is a block diagram of an electronic cigarette in one embodiment;
figure 4 is a circuit diagram of the body of the e-cigarette in one embodiment.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a charging base, wherein a charged device belongs to the field of electronic cigarettes or other electronic products, the electronic cigarette is provided with an electronic cigarette body and a charging base for charging the electronic cigarette body, and the charging base is connected with an external power supply to charge the electronic cigarette body; among the prior art, inside battery of electron cigarette body and charging base all have its fixed positive pole and negative pole, when charging through charging base, the positive pole that often can have the battery of electron cigarette and the positive pole and the negative pole of charging base reverse the condition of connecing, just can't carry out the operation of charging at this time, need readjust electron cigarette or charging base's electrode direction, it is unanimous to make the electrode of the two, and then realize the normal charge to the electron cigarette body, will reduce like this and use experience the sense, bring inconvenience for charging process.
Fig. 1 is a block diagram of a charging dock according to an embodiment, and referring to fig. 1, the charging dock includes: a first electrode RELAY _ A, a second electrode RELAY _ B and a charging circuit 100; the first electrode RELAY _ A and the second electrode RELAY _ B are used for outputting charging voltage to the charged device; the first electrode RELAY _ A and the second electrode RELAY _ B at least have a first state and a second state therebetween; and
the charging circuit 100 is connected to the first electrode relax _ a and the second electrode relax _ B, is connected to an external power source to receive the input voltage, transforms the input voltage to generate the charging voltage when the first state is between the first electrode relax _ a and the second electrode relax _ B, and adjusts the first state between the first electrode relax _ a and the second electrode relax _ B when the second state is between the first electrode relax _ a and the second electrode relax _ B, and then transforms the input voltage to generate the charging voltage.
In one embodiment, the first state is: the first electrode RELAY _ A is a negative electrode, and the second electrode RELAY _ B is a positive electrode; the second state is: the first electrode RELAY _ A is a positive electrode, the voltage to ground of the first electrode RELAY _ A is smaller than the input voltage, and the second electrode RELAY _ B is a negative electrode.
Specifically, taking an example that the input voltage of the charging circuit 100 after being connected to the external power supply is 4.2V, when the first electrode relax _ a is a negative electrode, the second electrode relax _ B is a positive electrode; meanwhile, when the charged device needs to be charged, the negative electrode of the charged device is connected to the first electrode RELAY _ a, the positive electrode of the charged device is connected to the second electrode RELAY _ B, and the positive electrode and the negative electrode of the charged device are normally connected to the positive electrode and the negative electrode of the charging base, so that the charging circuit 100 changes the input voltage to the charging voltage required by the charging device to charge the charged device.
When the first electrode RELAY _ A is a positive electrode, the second electrode RELAY _ B is a negative electrode, and the voltage to ground of the first electrode RELAY _ A is much less than the input voltage 4.2V; meanwhile, when the device to be charged needs to be charged, the negative electrode of the device to be charged is connected to the first electrode relax _ a, and the positive electrode of the device to be charged is connected to the second electrode relax _ B, and at this time, the positive electrode and the negative electrode of the device to be charged are reversely connected to the positive electrode and the negative electrode of the charging base, the charging circuit 100 may pull down the voltage of the first electrode relax _ a to 0V, and pull up the voltage of the second electrode relax _ B to 4.2V, so as to implement the above-mentioned switching between the positive electrode and the negative electrode of the charging base, so that when the device to be charged is charged, the polarities of the first electrode relax _ a and the second electrode relax _ B of the charging base correspond to the polarity of the charging device, so as to normally charge the charging device.
In one embodiment, the charging circuit 100 includes: the voltage divider circuit, the level output circuit and the surge protection circuit; the voltage division circuit is used for receiving the input voltage, dividing the input voltage and outputting a divided voltage. The level output circuit is connected to the voltage dividing circuit, and is configured to make the first electrode relax _ a and the second electrode relax _ B be a positive electrode and a negative electrode, respectively, based on the divided voltage. The surge protection circuit is connected with the voltage division circuit and the level output circuit and used for absorbing surges and spikes generated when the level output circuit is in instant short circuit.
Specifically, as shown in fig. 2, the voltage divider circuit includes: a first resistor F1, a second resistor R1, a third resistor R2, a fourth resistor R8 and a fifth resistor R9; a first end of the first resistor F1 is connected with the external power supply, and a second end of the first resistor F1 is connected with first ends of the second resistor R1 and the third resistor R2; a second terminal of the second resistor R1 is connected with the level output circuit and a first terminal of the fifth resistor R9; a second terminal of the third resistor R2 is connected with the level output circuit and a first terminal of the fourth resistor R8; the second end of the fourth resistor R8 and the second end of the fifth resistor R9 are both grounded.
The level output circuit includes: the MOS transistor comprises a first MOS transistor Q1, a second MOS transistor Q2, a third MOS transistor Q5 and a fourth MOS transistor Q6; the first MOS transistor Q1 and the second MOS transistor Q2 are P-MOS transistors, and the third MOS transistor Q5 and the fourth MOS transistor Q6 are N-MOS transistors; the grid electrode of the first MOS tube Q1 is connected with the voltage division circuit and the drain electrode of the second MOS tube Q2, the source electrode of the first MOS tube Q1 is connected with the external power supply, and the drain electrode of the first MOS tube Q1 is connected with the drain electrode of the third MOS tube Q5; the gate of the second MOS transistor Q2 is connected to the voltage dividing circuit and the drain of the first MOS transistor Q1, the source of the second MOS transistor Q2 is connected to the external power supply, and the drain of the second MOS transistor Q2 is connected to the drain of the fourth MOS transistor Q6; the gate of the third MOS transistor Q5 is connected to the second electrode relax _ B, the source of the third MOS transistor Q5 is grounded, and the drain of the third MOS transistor Q5 is connected to the first electrode relax _ a; the gate of the fourth MOS transistor Q6 is connected to the first electrode relax _ a, the source of the fourth MOS transistor Q6 is grounded, and the drain of the fourth MOS transistor Q6 is connected to the second electrode relax _ B.
The surge protection circuit includes: a first diode D3 and a second diode D4; the anode of the first diode D3 is grounded, the cathode of the first diode D3 is connected to the drain of the first MOS transistor Q1, the anode of the second diode D4 is grounded, and the cathode of the second diode D4 is connected to the drain of the second MOS transistor Q2.
The present invention also provides an electronic cigarette, as shown in fig. 3, including: the charging base and the electronic cigarette body are as described above; a third state is also present between the first electrode and the second electrode; the electron cigarette body includes: a clamp circuit 200 and a power supply circuit 300; the clamping circuit 200 is configured to clamp a voltage between the first electrode relax _ a and the second electrode relax _ B when the first electrode relax _ a and the second electrode relax _ B are in the third state, so that the first electrode relax _ a and the second electrode relax _ B are switched from the third state to the second state; the power supply circuit 300 is connected to the first electrode relax _ a, the second electrode relax _ B and a battery located in the electronic cigarette body, and is configured to charge the battery with the charging voltage.
Based on the above description of the charging base, it can be known that there exists a first state and a second state between the first electrode relax _ a and the second electrode relax _ B, and then there exists a third state, where the third state is: the first electrode relax _ a is a positive electrode, the voltage to ground of the first electrode relax _ a is the input voltage (4.2V), and the second electrode relax _ B is a negative electrode. Meanwhile, as shown in fig. 4, the clamp circuit 200 includes a third diode D2; an anode of the third diode D2 is connected to the cathode PGND of the power supply circuit 300, and a cathode of the third diode D2 is connected to the anode VBAT _ IN of the power supply circuit 300.
In combination with the circuit structure of the charging base, the first state, the second state, and the third state existing between the first electrode relax _ a and the second electrode relax _ B, and in the case that the charged device in this embodiment is an electronic cigarette body, the principle of polarity conversion between the first electrode relax _ a and the second electrode relax _ B is described in detail as follows:
after the charging base is connected to an external power source and the electronic cigarette body is not charged, referring to fig. 2, the first MOS transistor Q1 and the second MOS transistor Q2 in the charging circuit 100 in the charging base have a deviation due to their respective capacitances in the production and manufacturing processes, and if the capacitance of the first MOS transistor Q1 is smaller than the capacitance of the second MOS transistor Q2, the first MOS transistor Q1 is smaller and is preferentially turned on; the first electrode relax _ a connected to the drain of the first MOS transistor Q1 is a positive electrode, the voltage to ground of the first electrode relax _ a is the input voltage (4.2V), the second electrode relax _ B connected to the drain of the second MOS transistor Q2 is a negative electrode, that is, the first electrode relax _ a and the second electrode relax _ B are in the third state; at this time, if the negative electrode PGND of the electronic cigarette body is connected to the first electrode RELAY _ a and the positive electrode VBAT _ IN of the electronic cigarette body is connected to the second electrode RELAY _ B, the clamp circuit 200 IN the electronic cigarette body, that is, the third diode D2 is connected IN series between the first electrode RELAY _ a and the second electrode RELAY _ B, since the cut-off voltage of the third diode D2 is small, the cut-off voltage of the third diode D2 IN the present invention is 0.3V, the voltage to ground of the first electrode RELAY _ a at this time is pulled down to 0.3V from 4.2V instantaneously, and it can be known from fig. 2 that the voltage of the gate of the second MOS transistor Q2 is the voltage to ground (0.3V) of the first electrode RELAY _ a at this time, because the voltage of the source of the second MOS transistor Q2 is the input voltage (4.2V), and since the second MOS transistor Q2 is the P-MOS transistor 2, if the voltage of the gate is smaller than the voltage of the source, the second MOS transistor Q2 is turned on, and then, at this time, the drain voltage of the second MOS transistor Q2 is the input voltage (4.2V), since the gate of the first MOS transistor Q1 is connected to the drain of the second MOS transistor Q2, the voltage of the gate of the first MOS transistor Q1 is the input voltage (4.2V), and since the voltage of the source of the first MOS transistor Q1 is the input voltage (4.2V), the first MOS transistor Q1 is turned off; and since the drain of the second MOS transistor Q2 is connected to the second electrode relax _ B, the voltage of the second electrode relax _ B is also the input voltage (4.2V), so that the second electrode relax _ B is converted from the negative electrode to the positive electrode.
Meanwhile, since the gate of the third MOS transistor Q5 is connected to the second electrode relax _ B, the voltage of the gate of the third MOS transistor Q5 is the input voltage (4.2V), since the source of the third MOS transistor Q5 is grounded, and the third MOS transistor Q5 is an N-MOS transistor, the gate voltage of the third MOS transistor Q5 is greater than the source voltage, the third MOS transistor Q5 is turned on, and the drain of the third MOS transistor Q5 is grounded, the first electrode relax _ a is also grounded, so that the process that the first electrode relax _ a is converted from the positive electrode to the negative electrode is realized.
In the above process, the first electrode relax _ a is converted from the positive electrode to the negative electrode, the second electrode relax _ B is converted from the negative electrode to the positive electrode, and at this time, the first electrode relax _ a is correspondingly connected with the positive electrode and the negative electrode of the electronic cigarette body, so that normal charging is realized.
In one embodiment, as shown in fig. 4, the power supply circuit 300 includes: the overvoltage protection device comprises an overvoltage protection chip U1, a fifth MOS tube Q3, a sixth MOS tube Q4, a capacitor C1 and a transient suppression diode D1; the fifth MOS transistor Q3 is a P-MOS transistor, and the sixth MOS transistor Q4 is an N-MOS transistor; the input end of the overvoltage protection chip U1 is connected to the voltage output by the charging circuit 100 and is the positive electrode VBAT _ IN of the power supply circuit 300, and the output end of the overvoltage protection chip U1 is connected to the gate of the fifth MOS transistor Q3; the source electrode of the fifth MOS tube Q3 is grounded, and the drain electrode of the fifth MOS tube Q3 is connected with the gate electrode of the sixth MOS tube Q4; the drain of the sixth MOS transistor Q4 is connected with the output end of the overvoltage protection chip U1, and the source of the sixth MOS transistor Q4 is connected with a battery; the capacitor C1 is connected between the gate of the sixth MOS transistor Q4 and the ground; the anode of the transient suppression diode D1 is connected to the cathode PGND of the power supply circuit 300, and the cathode of the transient suppression diode D1 is connected to the anode VBAT _ IN of the power supply circuit 300.
Specifically, when the battery of the electronic cigarette body is normally charged through the charging base, since the gate of the sixth MOS transistor Q4 is connected to the positive electrode VBAT _ IN of the power supply circuit 300, and the source of the sixth MOS transistor Q4 is grounded, the sixth MOS transistor Q4 is turned on, so that the drain of the sixth MOS transistor Q4 is grounded, that is, the gate of the fifth MOS transistor Q3 is grounded, and since the source of the fifth MOS transistor Q3 is connected to the battery of the electronic cigarette body, the tertiary voltage of the fifth MOS transistor Q3 is smaller than the source voltage, so that the source of the fifth MOS transistor Q3 is turned on, and the positive electrode VBAT _ IN of the power supply circuit 300 is connected to the charging voltage of the charging circuit, and is transmitted to the input terminal VBAT1 of the battery through the fifth MOS transistor Q3 for charging.
The overvoltage protection chip U1 can prevent the external voltage from being too high to damage the power supply circuit 300; the transient suppression diode D1 can absorb the surge peak generated by the power supply circuit 300 at the moment of charging through the charging circuit, thereby improving the reliability of the product; the electric capacity C1 prevents contain the interference in the voltage among the charging circuit, avoids interfering the messenger the sixth MOS pipe Q4 misconduction, and then makes fifth MOS pipe Q3 misconduction for the voltage of the node CE that the pilot lamp was bright or goes out is often high (the pilot lamp sets up on the electron cigarette body, is used for instructing whether the electron cigarette body is charged), makes the pilot lamp is often bright, and the phenomenon that this quilt misindication of electron cigarette is the charged state appears.
A method of charging, comprising:
when the voltage polarity between the first electrode RELAY _ A and the second electrode RELAY _ B of the charging base is consistent with the voltage polarity of the battery of the charged device, the first electrode RELAY _ A and the second electrode RELAY _ B of the charging base output charging voltage to the charged device; the charged device here is the electronic cigarette.
When the voltage polarity between the first electrode relax _ a and the second electrode relax _ B of the charging base is not consistent with the voltage polarity of the battery, the clamping circuit 200 of the charged device reduces the voltage between the first electrode relax _ a and the second electrode relax _ B, then the charging circuit 100 of the charging base performs a conversion process on the voltages of the first electrode relax _ a and the second electrode relax _ B to adjust the voltage polarity between the first electrode relax _ a and the second electrode relax _ B of the charging base to be consistent with the voltage polarity between the positive electrode and the negative electrode of the charged device, and then the first electrode relax _ a and the second electrode relax _ B of the charging base output the charging voltage to the charged device.
In another embodiment, after the first electrode relax _ a and the second electrode relax _ B of the charging base output the same level as the positive electrode and the negative electrode of the charged device, the charging method further includes:
the method comprises the steps that a single chip microcomputer is used for collecting node voltage of a charged device, and the single chip microcomputer is used for collecting voltage of a battery of an electronic cigarette body through AD sampling, in the embodiment, the charged device is located in the electronic cigarette body, the node voltage is voltage of a node CE in a power supply circuit of the electronic cigarette body, the voltage of the node CE is compared with preset voltage, the preset voltage is 0.7 times of the battery voltage, namely, when the voltage of the node CE is more than 0.7 times of the battery voltage, the single chip microcomputer controls an indicator lamp to be turned on to prompt that the electronic cigarette body is being charged;
and if the voltage of the node CE is less than 0.7 times of the battery voltage, turning off an indicator lamp to prompt that the charged equipment is not charged.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.

Claims (13)

1. A charging base, comprising:
a first electrode and a second electrode for outputting a charging voltage to the charged device; the first electrode and the second electrode have at least a first state and a second state therebetween; and
the charging circuit is connected with the first electrode and the second electrode, and is used for receiving an input voltage and converting the input voltage to generate the charging voltage under the condition that the first electrode and the second electrode are in the first state; and under the condition that the first electrode and the second electrode are in the second state, adjusting the first electrode and the second electrode to be in the first state, and converting the input voltage to generate the charging voltage.
2. The charging dock of claim 1,
the first state is: the first electrode is a negative electrode, and the second electrode is a positive electrode;
the second state is: the first electrode is a positive electrode, the voltage to ground of the first electrode is smaller than the input voltage, and the second electrode is a negative electrode.
3. The charging base of claim 1, wherein the charging circuit comprises:
the voltage division circuit is used for receiving the input voltage, dividing the input voltage and outputting a divided voltage; and
and the level output circuit is connected with the voltage division circuit and is used for enabling the first electrode and the second electrode to be a positive electrode and a negative electrode respectively based on the divided voltage.
4. The charging base of claim 3, wherein the charging circuit further comprises:
and the surge protection circuit is connected with the voltage division circuit and the level output circuit and is used for absorbing surges and spikes generated when the level output circuit is instantly short-circuited.
5. The charging base of claim 3, wherein the voltage divider circuit comprises: the circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor and a fifth resistor;
the first end of the first resistor is connected with the external power supply, and the second end of the first resistor is connected with the first ends of the second resistor and the third resistor;
the second end of the second resistor is connected with the level output circuit and the first end of the fifth resistor;
the second end of the third resistor is connected with the level output circuit and the first end of the fourth resistor;
and the second end of the fourth resistor and the second end of the fifth resistor are both grounded.
6. The charging base of claim 3, wherein the level output circuit comprises: the MOS transistor comprises a first MOS transistor, a second MOS transistor, a third MOS transistor and a fourth MOS transistor;
the grid electrode of the first MOS tube is connected with the voltage division circuit and the drain electrode of the second MOS tube, the source electrode of the first MOS tube is connected with the external power supply, and the drain electrode of the first MOS tube is connected with the drain electrode of the third MOS tube;
the grid electrode of the second MOS tube is connected with the voltage division circuit and the drain electrode of the first MOS tube, the source electrode of the second MOS tube is connected with the external power supply, and the drain electrode of the second MOS tube is connected with the drain electrode of the fourth MOS tube;
the grid electrode of the third MOS tube is connected with the second electrode, the source electrode of the third MOS tube is grounded, and the drain electrode of the third MOS tube is connected with the first electrode;
the grid electrode of the fourth MOS tube is connected with the first electrode, the source electrode of the fourth MOS tube is grounded, and the drain electrode of the fourth MOS tube is connected with the second electrode.
7. The charging base of claim 6, wherein the surge protection circuit comprises: a first diode and a second diode;
the anode of the first diode is grounded, and the cathode of the first diode is connected with the drain electrode of the first MOS tube;
the anode of the second diode is grounded, and the cathode of the second diode is connected with the drain of the second MOS tube.
8. An electronic cigarette, comprising: the charging base and e-cigarette body of any one of claims 1 to 7; a third state is also present between the first electrode and the second electrode;
the electron cigarette body includes:
a clamp circuit configured to clamp a voltage between the first electrode and the second electrode to switch the first electrode and the second electrode from the third state to the second state when the first electrode and the second electrode are in the third state;
and the power supply circuit is connected with the first electrode, the second electrode and a battery positioned in the electronic cigarette body and is used for charging the battery by utilizing the charging voltage.
9. The electronic cigarette of claim 8,
the third state is: the first electrode is a positive electrode, the voltage to ground of the first electrode is the input voltage, and the second electrode is a negative electrode.
10. The electronic cigarette of claim 8, wherein the clamping circuit comprises a third diode;
the anode of the third diode is connected with the cathode of the power supply circuit, and the cathode of the third diode is connected with the anode of the power supply circuit.
11. The electronic cigarette of claim 10, wherein the power supply circuit comprises: the overvoltage protection chip, the fifth MOS tube and the sixth MOS tube;
the input end of the overvoltage protection chip is connected with the voltage output by the charging circuit and is the anode of the power supply circuit, and the output end of the overvoltage protection chip is connected with the grid electrode of the fifth MOS tube;
the source electrode of the fifth MOS tube is grounded, and the drain electrode of the fifth MOS tube is connected with the grid electrode of the sixth MOS tube; and the drain electrode of the sixth MOS tube is connected with the output end of the overvoltage protection chip, and the source electrode of the sixth MOS tube is connected with the battery.
12. A charging method, characterized in that the charging method comprises:
when the voltage polarity between the first electrode and the second electrode of the charging base is consistent with the voltage polarity of the battery of the charged device, the first electrode and the second electrode of the charging base output a charging voltage to the charged device;
when the voltage polarity between the first electrode and the second electrode of the charging base is inconsistent with the voltage polarity of the battery, the clamping circuit of the charged device reduces the voltage between the first electrode and the second electrode, then the charging circuit of the charging base converts the voltages of the first electrode and the second electrode so as to adjust the voltage polarity between the first electrode and the second electrode of the charging base to be consistent with the voltage polarity between the positive electrode and the negative electrode of the charged device, and then the first electrode and the second electrode of the charging base output the charging voltage to the charged device.
13. The charging method of claim 12, wherein after the voltage polarity between the first electrode and the second electrode of the charging base coincides with the voltage polarity of the battery of the device to be charged, the charging method further comprises:
collecting node voltage of the charged equipment, comparing the node voltage with preset voltage, and if the node voltage is greater than the preset voltage, lightening an indicator lamp on the charged equipment to prompt that the charged equipment is being charged through the charging base;
if the node voltage is smaller than the preset voltage, an indicator lamp is turned off to prompt that the charged equipment is not charged.
CN202111114759.9A 2021-09-23 2021-09-23 Charging base, electronic cigarette and charging method Pending CN113725980A (en)

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CN113725980A (en) * 2021-09-23 2021-11-30 深圳市吉迩科技有限公司 Charging base, electronic cigarette and charging method

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WO2023045376A1 (en) * 2021-09-23 2023-03-30 深圳市吉迩科技有限公司 Charging base, electronic cigarette, and charging method

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