WO2014190500A1 - 电子烟高效充电装置及方法 - Google Patents

电子烟高效充电装置及方法 Download PDF

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Publication number
WO2014190500A1
WO2014190500A1 PCT/CN2013/076358 CN2013076358W WO2014190500A1 WO 2014190500 A1 WO2014190500 A1 WO 2014190500A1 CN 2013076358 W CN2013076358 W CN 2013076358W WO 2014190500 A1 WO2014190500 A1 WO 2014190500A1
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WIPO (PCT)
Prior art keywords
charging
voltage
electronic cigarette
unit
output
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PCT/CN2013/076358
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English (en)
French (fr)
Inventor
向智勇
Original Assignee
吉瑞高新科技股份有限公司
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Application filed by 吉瑞高新科技股份有限公司 filed Critical 吉瑞高新科技股份有限公司
Priority to EP13885644.8A priority Critical patent/EP3007305A4/en
Priority to PCT/CN2013/076358 priority patent/WO2014190500A1/zh
Publication of WO2014190500A1 publication Critical patent/WO2014190500A1/zh

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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
    • H02J7/007—Regulation of charging or discharging current or voltage
    • 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
    • A24F40/95—Arrangements or methods specially adapted for charging batteries thereof structurally associated with cases
    • 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
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/342—The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging

Definitions

  • the invention relates to a rechargeable electronic cigarette, in particular to an electronic cigarette efficient charging device and method.
  • the charging mode of the electronic cigarette with its own charge management is linear constant current charging.
  • the current charging output of most cigarette packs on the market is a constant voltage, such as a constant voltage output of 5V.
  • a cigarette case is inefficient in charging a linear constant current charging battery rod, and the number of rechargeable battery rods is also small.
  • the battery in the cigarette case has a large loss of power for charging the battery rod, and the efficiency is only about 50% to 65%.
  • the charging current is related to the voltage difference between the battery voltage and the charging voltage.
  • the electronic cigarette case charges the electronic cigarette battery rod in a manner of charging a constant voltage, and such charging efficiency is low.
  • the technical problem to be solved by the present invention is to provide an electronic cigarette high-efficiency charging device and method for the defects of the prior art that the constant voltage charging efficiency is low.
  • the technical solution adopted by the present invention to solve the technical problem thereof is: constructing an electronic cigarette high-efficiency charging device, comprising an electronic cigarette case and a battery rod, the battery rod comprising a charging management unit and an electronic cigarette battery unit, wherein the electronic cigarette case comprises An electronic cigarette case battery unit, the electronic cigarette case further comprising a current sampling unit, a micro control unit, and an adjustable voltage output unit;
  • the adjustable voltage output unit is respectively connected to the electronic cigarette battery unit, the micro control unit, and the charging management unit, and the current sampling unit is respectively connected to the charging management unit and the micro control unit;
  • the current sampling unit is configured to sample an actual charging current of the charging management unit; the micro control unit is configured to determine whether a difference between the built-in battery constant charging current and the actual charging current is within a preset range, The control voltage regulating control signal is further controlled to control the adjustable voltage output unit to adjust the charging voltage output to the charging management unit.
  • the adjustable voltage output unit comprises a DC-DC first output circuit and a voltage regulating output circuit
  • An input end of the DC-DC first output circuit is connected to an output end of the electronic cigarette case battery unit, and a first input end of the voltage regulating output circuit is connected to an output end of the DC-DC first output circuit
  • the second input end of the voltage regulating output circuit is connected to an output end of the micro control unit, and an output end of the voltage regulating output circuit is connected to an input end of the charging management unit;
  • the voltage regulation control signal is a duty cycle adjustable PWM signal
  • the DC-DC first output circuit is configured to convert a charging power signal provided by the electronic cigarette case battery unit into a fixed DC voltage output, and the voltage regulating output circuit is configured to perform the The fixed DC voltage is subjected to a voltage regulation process to obtain the adjusted charging voltage.
  • the fixed DC voltage is 5V.
  • the voltage regulating output circuit includes a MOS transistor and a capacitor, and a drain of the MOS transistor is connected to the charge management unit and a source connection of the MOS transistor.
  • the gate of the MOS transistor is connected to the micro control unit, one end of the capacitor is connected to the drain of the MOS transistor, and the other end of the capacitor is grounded,
  • the MOS transistor is configured to control the on and off of the MOS transistor by receiving the fixed DC voltage and the gate receiving duty ratio adjustable PWM signal through the source, thereby controlling the charging voltage.
  • the MOS transistor is P-type.
  • the MOS transistor model is AO3401.
  • the micro control unit includes a microcontroller, a first resistor, and the model of the microcontroller is SN8P2711B, and the PWM1 pins of the microcontroller are respectively connected. Up to one end of the first resistor and a gate of the MOS transistor, the PWM1 pin of the microcontroller outputs the duty cycle adjustable PWM signal, and the other end of the first resistor is connected to the MOS transistor.
  • the source of the microcontroller, the pin VSS of the microcontroller is grounded, and the pin VDD of the microcontroller is connected to the power signal.
  • the current sampling circuit includes a sampling resistor, one end of the sampling resistor is grounded, and the other end is connected to the charging management unit and the pin of the microcontroller, respectively. P4.4.
  • the sampling resistor has a resistance of 1-2 ⁇ .
  • the adjustable voltage output unit includes a DC-DC second output circuit and a digital potentiometer.
  • a first input end of the DC-DC second output circuit is connected to an output end of the electronic cigarette case battery unit, and a second input end is connected to an output end of the digital potentiometer, the DC-DC second output An output of the circuit is connected to an input end of the charge management unit, and an input end of the digital potentiometer is connected to an output end of the micro control unit;
  • the voltage regulation control signal is a voltage regulation digital control signal
  • the digital potentiometer is configured to adjust a resistance value of an output sampling feedback resistor in the DC-DC second output circuit according to the voltage regulation digital control signal, thereby causing the DC-DC second output circuit to output a real-time adjustment
  • the charging voltage is described.
  • the invention provides an efficient charging method for electronic cigarettes, the method comprising the following steps:
  • a current sampling circuit samples an actual charging current of the charging management unit
  • the micro control unit determines whether the difference between the built-in battery constant charging current and the actual charging current is within a preset range
  • step S3 then go to step S1; otherwise, the micro control unit outputs a voltage regulation control signal;
  • the adjustable voltage output unit adjusts the charging voltage output to the charging management unit according to the voltage regulation control signal, and proceeds to step S1.
  • the voltage regulation control signal is a duty cycle adjustable PWM signal.
  • the voltage regulation control signal is a voltage regulation digital control signal.
  • the step S4 specifically includes
  • the DC-DC first output circuit converts the charging power signal provided by the electronic cigarette case battery unit into a fixed DC voltage output
  • the voltage regulating output circuit adjusts the fixed DC voltage according to the duty cycle adjustable PWM signal to obtain an adjusted charging voltage.
  • the step S4 specifically includes
  • the digital potentiometer receives the voltage regulation digital control signal, and adjusts the resistance value of the sampling feedback resistor of the DC-DC second output circuit;
  • the S42', DC-DC second output circuit outputs a real-time adjusted charging voltage to the charging management unit.
  • the electronic cigarette high-efficiency charging device and method embodying the invention have the following beneficial effects: the micro control unit determines whether the difference between the built-in battery constant charging current and the actual charging current is within a preset range, and further controls the transmission of the voltage regulating control signal.
  • the adjustable voltage output unit is controlled to adjust the charging voltage outputted to the charging management unit such that the actual charging current is equal to or slightly smaller than the constant charging current of the battery, and the charging efficiency is improved by reducing the charging pressure difference between the charging voltage and the voltage of the electronic cigarette battery unit.
  • FIG. 1 is a schematic structural view of a prior art electronic cigarette case for charging a battery rod
  • FIG. 2 is a schematic structural view of an electronic cigarette high-efficiency charging device of the present invention
  • FIG. 3 is a schematic structural view of a first embodiment of an electronic cigarette high-efficiency charging device of the present invention.
  • FIG. 4 is a circuit diagram of a first embodiment of an electronic cigarette efficient charging apparatus of the present invention.
  • FIG. 5 is a schematic structural view of a second embodiment of an electronic cigarette high-efficiency charging device of the present invention.
  • FIG. 6 is a flow chart of a method for efficiently charging an electronic cigarette according to the present invention.
  • FIG. 7 is a flow chart of a first embodiment of an efficient method for charging electronic cigarettes according to the present invention.
  • Figure 8 is a flow chart showing a second embodiment of the method for efficiently charging electronic cigarettes of the present invention.
  • the electronic cigarette battery rod with built-in linear charge management has a characteristic that when the charging voltage outside the battery rod approaches the battery voltage inside the battery rod from high to low, the internal charging control circuit (ie, the charging management unit 210 in the present invention)
  • the constant current will reduce the voltage drop between the input (the charging voltage in the present invention) and the output (the battery voltage of the electronic cigarette battery unit of the present invention) as much as possible, at which time the actual charging current is slightly smaller than the constant charging current.
  • the voltage difference between the external charging voltage and the internal battery voltage is also minimized, about 0.2V.
  • the present invention can improve the charging efficiency by adjusting the voltage drop between the input and the output in real time such that the actual charging current is slightly less than or equal to the constant charging current of the battery.
  • FIG. 2 is a schematic structural view of an electronic cigarette high-efficiency charging device of the present invention.
  • the electronic cigarette high-efficiency charging device of the present invention includes an electronic cigarette case 100 and a battery rod 200.
  • the battery rod 200 includes a charging management unit 210 and an electronic cigarette battery unit 220.
  • the charging management unit 210 is configured to control charging of the battery rod to charge with a built-in battery constant charging current.
  • the electronic cigarette case 100 includes an electronic cigarette case battery unit 110, a current sampling unit 130, a micro control unit 140, and an adjustable voltage output unit 120.
  • the adjustable voltage output unit 120 is connected to the electronic cigarette battery unit 110, the micro control unit 140, and the charging management unit 210, respectively, and the current sampling unit 130 is connected to the charging management unit 210 and the micro control unit 140, respectively.
  • the current sampling unit 130 is configured to sample the actual charging current of the charging management unit 210; the micro control unit 140 is configured to determine whether the difference between the built-in battery constant charging current and the actual charging current is within a preset range, thereby controlling the transmission voltage regulation.
  • the control signal control adjustable voltage output unit 120 adjusts the charging voltage outputted to the charging management unit 210 such that the actual charging current is equal to or slightly smaller than the battery constant charging current by reducing the charging voltage difference between the charging voltage and the voltage of the electronic cigarette battery unit 220. Improve charging efficiency.
  • the preset range is 0-50%* (battery constant charging current).
  • the adjustable voltage output unit 120 is controlled to increase the charging voltage if the difference between the constant charging current of the battery and the actual charging current is not within the preset range (the actual charging current is generally less than or equal to the constant charging current).
  • the electronic cigarette high-efficiency charging device of the present invention includes an electronic cigarette case 100 and a battery rod 200.
  • the battery rod 200 includes a charge management unit 210 and an electronic cigarette battery unit 220.
  • the electronic cigarette case 100 includes an electronic cigarette case battery unit 110, a current sampling unit 130, a micro control unit 140, and an adjustable voltage output unit 120.
  • the adjustable voltage output unit 120 includes a DC-DC first output circuit 121 and a voltage regulating output. Circuit 122.
  • the input end of the DC-DC first output circuit 121 is connected to the output end of the electronic cigarette case battery unit 110, and the output end of the DC-DC first output circuit 121 is connected to the first input end of the voltage regulating output circuit 122, and the voltage regulating output is output.
  • the output of the circuit 122 is connected to the input of the charging management unit 210, the first output of the charging management unit 210 is connected to the input of the current sampling unit 130, and the second output of the charging management unit 210 is connected to the electronic cigarette battery unit 220.
  • the input of the current sampling unit 130 is connected to the input of the micro control unit 140, and the output of the micro control unit 140 is connected to the second input of the voltage regulating output circuit 120.
  • the electronic cigarette case battery unit 110 provides a charging power signal to the DC-DC first output circuit 121, the DC-DC first output circuit 121 converts the charging power signal into a fixed DC voltage, and the current sampling unit 130 is used to sample the charging management unit 210.
  • the actual charging current; the micro control unit 140 determines whether the difference between the built-in battery constant charging current and the actual charging current is within a preset range, thereby controlling the issuance of the voltage regulating control signal; and the voltage regulating output circuit 122 according to the voltage regulating control signal
  • the fixed DC voltage is adjusted in real time, and the adjusted charging voltage is output to the charging management unit 210, so that the actual charging current is equal to or slightly smaller than the constant charging current of the battery, and the charging voltage difference between the charging voltage and the voltage of the electronic cigarette battery unit 220 is lowered.
  • the voltage regulation control signal is specifically a duty cycle adjustable PWM signal.
  • the fixed DC voltage is 5V.
  • FIG. 4 it is a circuit diagram of a first embodiment of the electronic cigarette efficient charging apparatus of the present invention.
  • the voltage regulating output circuit 122 includes a MOS transistor Q1 and a capacitor C.
  • the MOS transistor Q1 is of a P type and has a model number of AO3401.
  • the micro control unit 140 includes a microcontroller U1, a first resistor R1, and the model of the microcontroller U1 is SN8P2711B.
  • the current sampling unit 130 includes a sampling resistor R2.
  • the resistance of the sampling resistor R2 is relatively small, generally 1-2 ⁇ , which is preferably 1 ⁇ in this embodiment.
  • the drain of the MOS transistor Q1 is connected to the charge management unit 210, the source is connected to the DC-DC first output circuit 121, the gate is connected to the PWM1 pin of the microcontroller U1, and one end of the capacitor C is connected to the drain of the MOS transistor Q1. The other end of the capacitor C is grounded.
  • the PWM1 pin of the microcontroller U1 is also connected to one end of the first resistor R1, the PWM1 pin of the microcontroller U1 outputs an adjustable duty cycle PWM signal, and the other end of the first resistor R1 is connected to the source of the MOS transistor Q1.
  • the pin VSS of the microcontroller U1 is grounded, and the pin VDD of the microcontroller U1 is connected to the power signal Vbat.
  • sampling resistor R2 One end of the sampling resistor R2 is grounded, and the other end is connected to the charge management unit 210 and the pin P4.4 of the microcontroller U1, respectively.
  • the MOS transistor Q1 receives the fixed DC voltage and the gate receiving duty-adjustable PWM signal through the source, thereby controlling the on and off of the MOS transistor Q1.
  • the duty cycle adjustable PWM signal is the actual sampling of the microcontroller U1 according to the sampling.
  • the charging current is calculated and its corresponding duty ratio is calculated to control the charging current of the battery rod to be just less than the constant charging current of the battery.
  • the microcontroller U1 controls the increase of the duty cycle adjustable PWM signal.
  • the voltage regulating output circuit 122 is controlled to increase the charging voltage. For example, if the battery constant charging current is 100 mA, the preferred preset range in the first embodiment is 0-10%* (battery constant charging current), that is, 0-10 mA.
  • the microcontroller U1 needs to raise the charging voltage accordingly, for example, to increase to 150% of the original. This can increase the duty cycle of the PWM signal by increasing the output to the MOS transistor Q1. Ratio, for example, the original duty cycle is 60%. In order to increase the charging voltage, calculate the corresponding duty cycle to increase to 90%, then the microcontroller will output this 90% duty cycle duty cycle adjustable PWM.
  • the signal is connected to the gate of the MOS transistor Q1, and the conduction time of the control MOS transistor Q1 is increased.
  • the MOS transistor When the MOS transistor is turned on, the capacitor C can be charged, so the accumulated energy of the capacitor C is increased, thereby realizing the output of the capacitor C discharge.
  • the charging voltage is also increased to the expected 150%.
  • the charging power signal of the battery of the electronic cigarette battery unit 110 is generally 3-4.2V
  • the power signal of the battery of the electronic cigarette battery unit 220 is generally 3-4.2V.
  • the efficiency of the DC-DC is 85%, and the voltage between the external charging voltage and the internal battery voltage when the charging voltage outside the battery rod approaches the battery voltage inside the battery rod from high to low. The difference also reaches a minimum of about 0.2V. Therefore, in this embodiment, the charging voltage is (3.7+0.2)V, that is, 3.9V, and the charging efficiency of the electronic cigarette case to the battery rod is: 85%*(3.7/3.9). .
  • the charging efficiency of the prior art constant voltage charging is: 85%* (3.7/5). It is apparent that the charging efficiency of the present invention is greatly improved.
  • FIG. 5 it is a schematic structural view of a second embodiment of the electronic cigarette high-efficiency charging device of the present invention.
  • the electronic cigarette efficient charging apparatus of the present invention includes an electronic cigarette case 100 and a battery rod 200.
  • the battery rod 200 includes a charge management unit and 210 an electronic cigarette battery unit 220.
  • the electronic cigarette case 100 includes an electronic cigarette case battery unit 110, a current sampling unit 130, a micro control unit 140, and an adjustable voltage output unit 120, wherein the adjustable voltage output unit 120 includes a DC-DC second output circuit 121 and a digital potentiometer 122.
  • the first input end of the DC-DC second output circuit 121 is connected to the output end of the electronic cigarette case battery unit 110, and the output end of the DC-DC second output circuit 121 is connected to the input end of the charge management unit 210, and the charge management unit 210
  • the first output is connected to the input of the current sampling unit 130
  • the second output of the charging management unit 210 is connected to the input of the electronic cigarette battery unit 220
  • the output of the current sampling unit 130 is connected to the input of the micro control unit 140.
  • the output of the micro control unit 140 is coupled to the input of the digital potentiometer 122
  • the output of the digital potentiometer 122 is coupled to the second input of the DC-DC second output circuit 121.
  • the electronic cigarette case battery unit 110 provides a charging power signal to the DC-DC second output circuit 121, the current sampling unit 130 is used to sample the actual charging current of the charging management unit 210; the micro control unit 140 determines the built-in battery constant charging current and the actual Whether the difference of the charging current is within a preset range, thereby controlling the issuance of the voltage regulating control signal; the digital potentiometer 122 adjusting the output sampling feedback resistance of the DC-DC second output circuit 121 according to the voltage regulating control signal (not shown) The resistance value, and then the DC-DC second output circuit 121 outputs the real-time adjusted charging voltage to the charging management unit 210 (the technical means for adjusting the DC-DC output sampling feedback resistor of the digital potentiometer is prior art, here is not To be detailed, the actual charging current is equal to or slightly smaller than the battery constant charging current, and the charging efficiency is improved by lowering the charging voltage difference between the charging voltage and the voltage of the electronic cigarette battery unit 220.
  • the voltage regulation control signal is specifically
  • the microcontroller U1 issues a voltage regulating digital control signal, and the digital potentiometer 122 According to the voltage regulation digital control signal, the resistance value of the output sampling feedback resistor in the DC-DC second output circuit 121 is adjusted, so that the DC-DC second output circuit 121 outputs the increased charging voltage.
  • the preset range is preferably 0-10%* (battery constant charging current).
  • the preset range is 0-10%* (battery constant charging current), ie 0-10 mA.
  • the microcontroller U1 controls the output of 90 mA.
  • the actual charging current correspondingly need to increase the charging voltage, for example, to increase to 150%
  • the microcontroller U1 sends a voltage regulating digital control signal to the digital potentiometer 122
  • the digital potentiometer 122 will adjust the DC according to the voltage regulating digital control signal a resistance value of an output sampling feedback resistor connected to the DC-DC conversion chip in the second output circuit 121 of the DC (not shown), Further, the output voltage of the DC-DC second output circuit 121 is adjusted, that is, the real-time adjusted charging voltage is outputted to reach the expected 150%.
  • FIG. 6 it is a flow chart of the method for efficiently charging the electronic cigarette of the present invention.
  • the method of the invention comprises the following steps:
  • the current sampling circuit 130 samples the actual charging current of the charging management unit 210;
  • the micro control unit 140 determines whether the difference between the constant battery charging current and the actual charging current is within a preset range
  • step S3 then go to step S1; otherwise, the micro control unit 140 outputs a voltage regulation control signal;
  • the adjustable voltage output unit 120 adjusts the charging voltage output to the charging management unit 210 according to the voltage regulation control signal, and proceeds to step S1.
  • FIG. 7 it is a flowchart of the first embodiment of the method for efficiently charging electronic cigarettes of the present invention.
  • the sampling resistor R2 in the current sampling circuit 130 samples the actual charging current of the charging management unit 210;
  • the microcontroller U1 in the micro control unit 140 determines whether the difference between the built-in battery constant charging current and the actual charging current is within a preset range
  • the preset range is 0-10%* (battery constant charging current);
  • step S3 then go to step S1; otherwise, the microcontroller U1 outputs a duty cycle adjustable PWM signal;
  • the adjustable voltage output unit 120 adjusts the charging voltage output to the charging management unit 210 according to the duty cycle adjustable PWM signal, so that the actual charging current is equal to or slightly smaller than the battery constant charging current, and the process proceeds to step S1.
  • the specific S4 includes the following steps:
  • DC-DC first output circuit converts the charging power signal provided by the electronic cigarette battery unit into a fixed DC voltage output, in this embodiment, the fixed DC voltage is 5V;
  • the voltage regulating output circuit adjusts the fixed DC voltage according to the duty cycle adjustable PWM signal to obtain an adjusted charging voltage.
  • the MOS transistor Q1 source in the voltage regulating output circuit receives the fixed DC voltage outputted by the DC-DC first output circuit, and the MOS transistor Q1 gate receives the duty cycle adjustable PWM signal, thereby controlling the MOS
  • the transistor Q1 is turned on and off, thereby controlling the charging of the capacitor by the fixed DC voltage, and the capacitor C outputs the accumulated energy to the charging management unit 210 through the discharging.
  • FIG. 8 it is a flow chart of a second embodiment of the method for efficiently charging electronic cigarettes of the present invention.
  • the sampling resistor R2 in the current sampling circuit 130 samples the actual charging current of the charging management unit 210;
  • the microcontroller U1 in the micro control unit 140 determines whether the difference between the built-in battery constant charging current and the actual charging current is within a preset range
  • the preset range is 0-10%* (battery constant charging current);
  • step S3 then go to step S1; otherwise, the microcontroller U1 outputs a voltage-regulating digital control signal;
  • the adjustable voltage output unit 120 adjusts the charging voltage output to the charging management unit 210 according to the voltage regulation digital control signal, so that the actual charging current is equal to or slightly smaller than the battery constant charging current, and the process proceeds to step S1.
  • the specific S4 includes the following steps:
  • the digital potentiometer receives the voltage regulation digital control signal, and adjusts the resistance value of the sampling feedback resistor of the DC-DC second output circuit;
  • the S42', DC-DC second output circuit outputs a real-time adjusted charging voltage to the charging management unit.

Abstract

一种电子烟高效充电装置及方法，电子烟高效充电装置包括电子烟盒（100）和电池杆（200），电池杆（200）包括充电管理单元（210）和电子烟电池单元（220），电子烟盒（100）包括电子烟盒电池单元（110）、电流采样单元（130）、微控制单元（140）、可调电压输出单元（120），电流采样单元（130）检测充电管理单元（210）对电子烟电池的实际充电电流值，微控制器（U1）比较实际充电电流与内设的电池恒定充电电流，进而控制可调电压输出单元（120）调整输出的充电电压。通过控制可调电压输出单元（120）调整充电电压，使实际充电电流等于或略小于电池恒定充电电流，通过降低充电电压与电子烟电池单元（220）电压之间的充电压差提高充电效率。

Description

电子烟高效充电装置及方法 技术领域
本发明涉及可充电电子烟，尤其涉及一种电子烟高效充电装置及方法。
背景技术
目前市面上大部分的可充电式的电子香烟内部都自有充电管理，这种自带充电管理的电子香烟的充电模式都是线性恒流方式充电。如图1所示，目前市面上的大多数烟盒的充电输出都是一个恒定电压的方式，比如恒压输出的电压为5V。这样的烟盒对线性恒流方式充电电池杆充电时的效率很低，烟盒可充电电池杆的数量也很少。烟盒内电池对电池杆充电的电量的损失较大，效率大约只有50%~65%。充电效率的计算如下：(DC-DC的效率)*(线性充电的效率)。例如DC-DC（电池电压升压到5V）的效率为85%，线性充电的效率为3.7/5=74%，总效率为85%*74%=59%。
为了保证充电效率，首先保证充电恒定电流，充电电流与电池电压和充电电压压差相关，压差越小，效率越高。而现有技术中，电子烟盒对电子烟电池杆的充电为恒定电压的方式充电，这样的充电效率很低。
所以，现有技术存在缺陷，需要改进。
发明内容
本发明要解决的技术问题在于，针对现有技术的上述恒压充电效率低的缺陷，提供一种电子烟高效充电装置及方法。
本发明解决其技术问题所采用的技术方案是：构造一种电子烟高效充电装置，包括电子烟盒和电池杆，所述电池杆包括充电管理单元和电子烟电池单元，所述电子烟盒包括电子烟盒电池单元，所述电子烟盒还包括电流采样单元、微控制单元、可调电压输出单元，
所述可调电压输出单元分别与所述电子烟盒电池单元、微控制单元、充电管理单元相连，所述电流采样单元分别连接至所述充电管理单元和所述微控制单元；
所述电流采样单元用于采样所述充电管理单元的实际充电电流；所述微控制单元用于判断内设的电池恒定充电电流与所述实际充电电流的差值是否在预设范围之内，进而控制发送调压控制信号控制所述可调电压输出单元调整输出到所述充电管理单元的充电电压。
在本发明所述的电子烟高效充电装置中，所述可调电压输出单元包括DC-DC第一输出电路和调压输出电路，
所述DC-DC第一输出电路的输入端连接至所述电子烟盒电池单元的输出端，所述调压输出电路的第一输入端连接至所述DC-DC第一输出电路的输出端、所述调压输出电路的第二输入端连接至所述微控制单元的输出端，所述调压输出电路的输出端连接至所述充电管理单元的输入端；
所述调压控制信号为占空比可调PWM信号；
所述DC-DC第一输出电路用于将电子烟盒电池单元提供的充电电源信号转换为固定直流电压输出，所述调压输出电路用于根据所述占空比可调PWM信号将所述固定直流电压进行调压处理得到调整的所述充电电压。
在本发明所述的电子烟高效充电装置中，所述固定直流电压为5V。
在本发明所述的电子烟高效充电装置中，所述调压输出电路包括一MOS管、一电容，所述MOS管的漏极连接至所述充电管理单元、所述MOS管的源极连接至所述DC-DC第一输出电路、所述MOS管的栅极连接至所述微控制单元，所述电容一端连接至所述MOS管的漏极，所述电容的另一端接地，
所述MOS管用于通过所述源极接收所述固定直流电压、栅极接收占空比可调PWM信号来控制所述MOS管的导通和截止，进而控制所述充电电压。
在本发明所述的电子烟高效充电装置中，所述MOS管为P型。
在本发明所述的电子烟高效充电装置中，所述MOS管型号为AO3401。
在本发明所述的电子烟高效充电装置中，所述微控制单元包括一微控制器，一第一电阻，所述微控制器的型号为SN8P2711B，所述微控制器的PWM1引脚分别连接至所述第一电阻一端和所述MOS管的栅极，所述微控制器的PWM1引脚输出所述占空比可调PWM信号，所述第一电阻的另一端连接至所述MOS管的源极，所述微控制器的引脚VSS接地，所述微控制器的引脚VDD接电源信号。
在本发明所述的电子烟高效充电装置中，所述电流采样电路包括一采样电阻，所述采样电阻的一端接地，另一端分别连接至所述充电管理单元和所述微控制器的引脚P4.4。
在本发明所述的电子烟高效充电装置中，所述采样电阻阻值为1-2Ω。
在本发明所述的电子烟高效充电装置中，所述可调电压输出单元包括一DC-DC第二输出电路和数字电位器，
所述DC-DC第二输出电路的第一输入端连接至所述电子烟盒电池单元的输出端、第二输入端连接至所述数字电位器的输出端，所述DC-DC第二输出电路的输出端连接至所述充电管理单元的输入端，所述数字电位器的输入端连接至所述微控制单元的输出端；
所述调压控制信号为调压数字控制信号；
所述数字电位器用于根据所述调压数字控制信号调节所述DC-DC第二输出电路中的输出采样反馈电阻的电阻值，进而使所述DC-DC第二输出电路输出实时调整的所述充电电压。
本发明提供一种电子烟高效充电方法，所述方法包括以下步骤：
S1、电流采样电路采样所述充电管理单元的实际充电电流；
S2、微控制单元判断内设的电池恒定充电电流与所述实际充电电流的差值是否在预设范围之内；
S3、是，则转步骤S1；否，则微控制单元输出调压控制信号；
S4、可调电压输出单元根据所述调压控制信号调整输出到所述充电管理单元的充电电压，转步骤S1。
在本发明所述的电子烟高效充电方法中，在所述步骤S3中，所述调压控制信号为占空比可调PWM信号。
在本发明所述的电子烟高效充电方法中，在所述步骤S3中，所述调压控制信号为调压数字控制信号。
在本发明所述的电子烟高效充电方法中，所述步骤S4具体包括，
S41、DC-DC第一输出电路将电子烟盒电池单元提供的充电电源信号转换为固定直流电压输出；
S42、调压输出电路根据占空比可调PWM信号将固定直流电压进行调压处理得到调整的充电电压。
在本发明所述的电子烟高效充电方法中，所述步骤S4具体包括，
S41’、数字电位器接收调压数字控制信号，调节DC-DC第二输出电路的采样反馈电阻的电阻值；
S42’、DC-DC第二输出电路输出实时调整的充电电压到充电管理单元。
实施本发明的电子烟高效充电装置及方法，具有以下有益效果：微控制单元判断内设的电池恒定充电电流与实际充电电流的差值是否在预设范围之内，进而控制发送调压控制信号，控制可调电压输出单元调整输出到充电管理单元的充电电压，使实际充电电流等于或略小于电池恒定充电电流，通过降低充电电压与电子烟电池单元电压之间的充电压差提高充电效率。
附图说明
下面将结合附图及实施例对本发明作进一步说明，附图中：
图1是现有技术电子烟盒对电池杆充电的结构示意图；
图2是本发明电子烟高效充电装置的结构示意图；
图3是本发明电子烟高效充电装置的第一实施例的结构示意图；
图4是本发明电子烟高效充电装置的第一实施例的电路图；
图5是本发明电子烟高效充电装置的第二实施例的结构示意图；
图6是本发明电子烟高效充电方法的流程图；
图7是本发明电子烟高效充电方法第一实施例的流程图；
图8是本发明电子烟高效充电方法第二实施例的流程图。
具体实施方式
为了对本发明的技术特征、目的和效果有更加清楚的理解，现对照附图详细说明本发明的具体实施方式。
内置线性充电管理的电子香烟电池杆有个特性，当电池杆外部的充电电压由高到低接近电池杆内部的电池电压时，内部的充电控制电路（即本发明中的充电管理单元210）为了恒流，就会尽可能的降低输入（本发明中的充电电压）与输出（本发明的电子烟电池单元的电池电压）之间的压降，这时实际充电电流比恒定的充电电流稍微小一些，同时外部充电电压和内部电池电压之间的压差也达到最小，约为0.2V。为了保证充电效率，首先保证充电恒定电流，实际充电电流与电池电压和充电电压压差相关，压差越小，效率越高。因此本发明通过实时调整输入与输出之间的压降，使得实际充电电流略小于或等于电池恒定充电电流，如此即可提高充电效率。
如图2所示，是本发明电子烟高效充电装置的结构示意图。
本发明的电子烟高效充电装置包括电子烟盒100和电池杆200。
电池杆200包括一充电管理单元210和一电子烟电池单元220，充电管理单元210用于控制电池杆的充电以内设的电池恒定充电电流进行充电。
电子烟盒100包括电子烟盒电池单元110、电流采样单元130、微控制单元140、可调电压输出单元120。
可调电压输出单元120分别与电子烟盒电池单元110、微控制单元140、充电管理单元210相连，电流采样单元130分别连接至充电管理单元210和微控制单元140。
电流采样单元130用于采样充电管理单元210的实际充电电流；微控制单元140用于判断内设的电池恒定充电电流与实际充电电流的差值是否在预设范围之内，进而控制发送调压控制信号控制可调电压输出单元120调整输出到充电管理单元210的充电电压，使实际充电电流等于或略小于电池恒定充电电流，通过降低充电电压与电子烟电池单元220电压之间的充电压差提高充电效率。
预设范围为0-50%*（电池恒定充电电流）。第一实施例中优选的0-10%*（电池恒定充电电流）。
具体的，如果电池恒定充电电流与实际充电电流的差值不在预设范围之内（实际充电电流一般小于或等于恒定充电电流），则控制可调电压输出单元120提高充电电压。
如图3所示，是本发明电子烟高效充电装置的第一实施例的结构示意图。第一实施例中，本发明的电子烟高效充电装置包括电子烟盒100和电池杆200。
电池杆200包括一充电管理单元210和一电子烟电池单元220。
电子烟盒100包括电子烟盒电池单元110、电流采样单元130、微控制单元140、可调电压输出单元120，其中，可调电压输出单元120包括DC-DC第一输出电路121和调压输出电路122。
DC-DC第一输出电路121的输入端连接至电子烟盒电池单元110的输出端，DC-DC第一输出电路121的输出端连接至调压输出电路122的第一输入端，调压输出电路122的输出端连接至充电管理单元210的输入端，充电管理单元210的第一输出端连接至电流采样单元130的输入端，充电管理单元210的第二输出端连接至电子烟电池单元220的输入端，电流采样单元130的输出端连接至微控制单元140的输入端，微控制单元140的输出端连接至调压输出电路120的第二输入端。
电子烟盒电池单元110提供充电电源信号至DC-DC第一输出电路121，DC-DC第一输出电路121将此充电电源信号转换为固定直流电压，电流采样单元130用于采样充电管理单元210的实际充电电流；微控制单元140判断内设的电池恒定充电电流与实际充电电流的差值是否在预设范围之内，进而控制发出调压控制信号；调压输出电路122根据调压控制信号将上述固定直流电压进行实时调整，输出调整的充电电压到充电管理单元210，使实际充电电流等于或略小于电池恒定充电电流，通过降低充电电压与电子烟电池单元220电压之间的充电压差提高充电效率。在第一实施例中，该调压控制信号具体为占空比可调PWM信号。
本实施例中，固定直流电压为5V。
如图4所示，是本发明电子烟高效充电装置的第一实施例的电路图。
调压输出电路122包括一MOS管Q1、一电容C，该MOS管Q1为P型，型号为AO3401。微控制单元140包括一微控制器U1，一第一电阻R1，微控制器U1的型号为SN8P2711B。
电流采样单元130包括一采样电阻R2，采样电阻R2阻值比较小，一般为1-2Ω，本实施例中优选的1Ω。
MOS管Q1的漏极连接至充电管理单元210、源极连接至DC-DC第一输出电路121、栅极连接至微控制器U1的PWM1引脚，电容C一端连接至MOS管Q1的漏极，电容C的另一端接地，
微控制器U1的PWM1引脚还连接至第一电阻R1一端，微控制器U1的PWM1引脚输出占空比可调PWM信号，第一电阻R1的另一端连接至MOS管Q1的源极，微控制器U1的引脚VSS接地，微控制器U1的引脚VDD接电源信号Vbat。
采样电阻R2的一端接地，另一端分别连接至充电管理单元210和微控制器U1的引脚P4.4。
MOS管Q1通过源极接收固定直流电压、栅极接收占空比可调PWM信号，从而控制MOS管Q1的导通和截止，该占空比可调PWM信号是微控制器U1根据采样的实际充电电流，计算出其对应的占空比，来控制对电池杆充电的充实际电电流刚刚小于电池恒定充电电流。在MOS管Q1导通的时候，固定直流电压对电容C充电，在MOS管Q1截止的时候，电容C将充电积累的能量进行放电，输出充电电压。
具体的，如果电池恒定充电电流与实际充电电流的差值不在预设范围之内（实际充电电流一般小于或等于恒定充电电流），则微控制器U1控制提高占空比可调PWM信号的占空比，控制调压输出电路122提高充电电压。例如，若电池恒定充电电流为100mA，第一实施例中优选的预设范围是0-10%*（电池恒定充电电流），即0-10mA。
若采样单元采样的实际充电电流为60mA，则实际充电电流小于电池恒定充电电流，且差值不在预设范围之内，则明显必须增加实际充电电流，对应的则必须升高充电电压，因此，微控制器U1为了控制输出90mA的实际充电电流，相应的需要升高充电电压，比如升高为原来的150%，此可以通过增加输出到MOS管Q1的占空比可调PWM信号的占空比，比如原来的占空比为60%，为了升高充电电压，计算出相应的占空比须增加到90%，则微控制器会输出此90%占空比的占空比可调PWM信号到MOS管Q1的栅极，控制MOS管Q1的导通时间增加，在MOS管导通的时候电容C才能进行充电，因此电容C充电累积的能量也就增加，从而实现电容C放电时输出的充电电压也就增加到预期的150%。
电子烟盒电池单元110的电池的充电电源信号一般为3-4.2V，电子烟电池单元220的电池的电源信号一般为3-4.2V。本实施例中优选的3.7V。
关于效率的计算，本实施例中，DC-DC的效率为85%，且当电池杆外部的充电电压由高到低接近电池杆内部电池电压时，外部充电电压和内部电池电压之间的压差也达到最小，约为0.2V，因此，本实施例中，充电电压为（3.7+0.2）V，即3.9V，电子烟盒对电池杆的充电效率为：85%*（3.7/3.9）。而现有技术恒压充电的充电效率为：85%*（3.7/5）。明显本发明的充电效率有很大提高。
如图5所示，是本发明电子烟高效充电装置的第二实施例的结构示意图。
在本发明第二实施例中，本发明的电子烟高效充电装置包括电子烟盒100和电池杆200。
电池杆200包括一充电管理单元和210一电子烟电池单元220。
电子烟盒100包括电子烟盒电池单元110、电流采样单元130、微控制单元140、可调电压输出单元120，其中，可调电压输出单元120包括DC-DC第二输出电路121和数字电位器122。
DC-DC第二输出电路121的第一输入端连接至电子烟盒电池单元110的输出端，DC-DC第二输出电路121的输出端连接至充电管理单元210的输入端，充电管理单元210的第一输出端连接至电流采样单元130的输入端，充电管理单元210的第二输出端连接至电子烟电池单元220的输入端，电流采样单元130的输出端连接至微控制单元140的输入端，微控制单元140的输出端连接至数字电位器122的输入端，数字电位器122的输出端连接至DC-DC第二输出电路121的第二输入端。
电子烟盒电池单元110提供充电电源信号至DC-DC第二输出电路121，电流采样单元130用于采样充电管理单元210的实际充电电流；微控制单元140判断内设的电池恒定充电电流与实际充电电流的差值是否在预设范围之内，进而控制发出调压控制信号；数字电位器122根据调压控制信号调节DC-DC第二输出电路121的输出采样反馈电阻（图中未显示）的电阻值，进而使DC-DC第二输出电路121输出实时调整的充电电压到充电管理单元210（这种数字电位器调整DC-DC输出采样反馈电阻的技术手段为现有技术，此处不做详述），使实际充电电流等于或略小于电池恒定充电电流，通过降低充电电压与电子烟电池单元220电压之间的充电压差提高充电效率。在第二实施例中，该调压控制信号具体为调压数字控制信号。
具体的，如果电池恒定充电电流与实际充电电流的差值不在预设范围之内（实际充电电流一般小于或等于恒定充电电流），则微控制器U1发出调压数字控制信号，数字电位器122据此调压数字控制信号调节DC-DC第二输出电路121中输出采样反馈电阻的电阻值，进而使DC-DC第二输出电路121输出提高的充电电压。
第二实施例中，预设范围优选为0-10%*（电池恒定充电电流）。
例如，若电池恒定充电电流为100mA，预设范围是0-10%*（电池恒定充电电流），即0-10mA。
若采样单元采样的实际充电电流为60mA，则电池恒定充电电流与实际充电电流的差值不在预设范围之内，可以把实际充电电流调整为90mA，因此，微控制器U1为了控制输出90mA的实际充电电流，相应的需要提高充电电压，比如提高为原来的150%，微控制器U1发出调压数字控制信号到数字电位器122，则数字电位器122会根据此调压数字控制信号调节DC-DC第二输出电路121中的与DC-DC转换芯片相连接的输出采样反馈电阻的电阻值（图中未显示）, 进而实现调节DC-DC第二输出电路121的输出电压，即输出实时调整的充电电压，使之达到到预期的150%。
如图6所示，是本发明电子烟高效充电方法的流程图。
本发明的方法包括以下步骤：
S1、电流采样电路130采样充电管理单元210的实际充电电流；
S2、微控制单元140判断内设的电池恒定充电电流与实际充电电流的差值是否在预设范围之内；
S3、是，则转步骤S1；否，则微控制单元140输出调压控制信号；
S4、可调电压输出单元120根据调压控制信号调整输出到充电管理单元210的充电电压，转步骤S1。
如图7所示，是本发明电子烟高效充电方法第一实施例的流程图。
第一实施例包括以下步骤：
S1、电流采样电路130中的采样电阻R2采样充电管理单元210的实际充电电流；
S2、微控制单元140中的微控制器U1判断内设的电池恒定充电电流与实际充电电流的差值是否在预设范围之内；
本实施例中，预设范围为0-10%*（电池恒定充电电流）；
S3、是，则转步骤S1；否，则微控制器U1输出占空比可调PWM信号；
S4、可调电压输出单元120根据占空比可调PWM信号调整输出到充电管理单元210的充电电压，使实际充电电流等于或略小于电池恒定充电电流，转步骤S1。
具体的S4包括以下步骤：
S41、DC-DC第一输出电路将电子烟盒电池单元提供的充电电源信号转换为固定直流电压输出，本实施例中固定直流电压为5V；
S42、调压输出电路根据占空比可调PWM信号将固定直流电压进行调压处理得到调整的充电电压。
具体的，调压输出电路中的MOS管Q1源极接收DC-DC第一输出电路输出的固定直流电压、MOS管Q1栅极接收所述占空比可调PWM信号，以此控制所述MOS管Q1的导通和截止，进而控制所述固定直流电压对电容的充电，电容C将充电积累的能量通过放电输出充电电压到充电管理单元210。
如图8所示，是本发明电子烟高效充电方法第二实施例的流程图。
第二实施例包括以下步骤：
S1、电流采样电路130中的采样电阻R2采样充电管理单元210的实际充电电流；
S2、微控制单元140中的微控制器U1判断内设的电池恒定充电电流与实际充电电流的差值是否在预设范围之内；
本实施例中，预设范围为0-10%*（电池恒定充电电流）；
S3、是，则转步骤S1；否，则微控制器U1输出调压数字控制信号；
S4、可调电压输出单元120根据调压数字控制信号调整输出到充电管理单元210的充电电压，使实际充电电流等于或略小于电池恒定充电电流，转步骤S1。具体的S4包括以下步骤：
S41’、 数字电位器接收调压数字控制信号，调节DC-DC第二输出电路的采样反馈电阻的电阻值；
S42’、 DC-DC第二输出电路输出实时调整的充电电压到充电管理单元。
上面结合附图对本发明的实施例进行了描述，但是本发明并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是限制性的，本领域的普通技术人员在本发明的启示下，在不脱离本发明宗旨和权利要求所保护的范围情况下，还可做出很多形式，这些均属于本发明的保护之内。

Claims (1)

1、一种电子烟高效充电装置，包括电子烟盒和电池杆，所述电池杆包括充电管理单元和电子烟电池单元，所述电子烟盒包括电子烟盒电池单元，其特征在于，所述电子烟盒还包括电流采样单元、微控制单元、可调电压输出单元，
所述可调电压输出单元分别与所述电子烟盒电池单元、微控制单元、充电管理单元相连，所述电流采样单元分别连接至所述充电管理单元和所述微控制单元；
所述电流采样单元用于采样所述充电管理单元的实际充电电流；所述微控制单元用于判断内设的电池恒定充电电流与所述实际充电电流的差值是否在预设范围之内，进而控制发送调压控制信号控制所述可调电压输出单元调整输出到所述充电管理单元的充电电压。
2、根据权利要求1所述的电子烟高效充电装置，其特征在于，所述可调电压输出单元包括DC-DC第一输出电路和调压输出电路，
所述DC-DC第一输出电路的输入端连接至所述电子烟盒电池单元的输出端，所述调压输出电路的第一输入端连接至所述DC-DC第一输出电路的输出端、所述调压输出电路的第二输入端连接至所述微控制单元的输出端，所述调压输出电路的输出端连接至所述充电管理单元的输入端；
所述调压控制信号为占空比可调PWM信号；
所述DC-DC第一输出电路用于将电子烟盒电池单元提供的充电电源信号转换为固定直流电压输出，所述调压输出电路用于根据所述占空比可调PWM信号将所述固定直流电压进行调压处理得到调整的所述充电电压。
3、根据权利要求2所述的电子烟高效充电装置，其特征在于，所述固定直流电压为5V。
4、根据权利要求2所述的电子烟高效充电装置，其特征在于，所述调压输出电路包括一MOS管、一电容，所述MOS管的漏极连接至所述充电管理单元、所述MOS管的源极连接至所述DC-DC第一输出电路、所述MOS管的栅极连接至所述微控制单元，所述电容一端连接至所述MOS管的漏极，所述电容的另一端接地，
所述MOS管用于通过所述源极接收所述固定直流电压、栅极接收占空比可调PWM信号来控制所述MOS管的导通和截止，进而控制所述充电电压。
5、根据权利要求4所述的电子烟高效充电装置，其特征在于，所述MOS管为P型。
6、根据权利要求5所述的电子烟高效充电装置，其特征在于，所述MOS管型号为AO3401。
7、根据权利要求4所述的电子烟高效充电装置，其特征在于，所述微控制单元包括一微控制器，一第一电阻，所述微控制器的型号为SN8P2711B，所述微控制器的PWM1引脚分别连接至所述第一电阻一端和所述MOS管的栅极，所述微控制器的PWM1引脚输出所述占空比可调PWM信号，所述第一电阻的另一端连接至所述MOS管的源极，所述微控制器的引脚VSS接地，所述微控制器的引脚VDD接电源信号。
8、根据权利要求7所述的电子烟高效充电装置，其特征在于，所述电流采样电路包括一采样电阻，所述采样电阻的一端接地，另一端分别连接至所述充电管理单元和所述微控制器的引脚P4.4。
9、根据权利要求8所述的电子烟高效充电装置，其特征在于，所述采样电阻阻值为1-2Ω。
10、根据权利要求1所述的电子烟高效充电装置，其特征在于，所述可调电压输出单元包括一DC-DC第二输出电路和数字电位器，
所述DC-DC第二输出电路的第一输入端连接至所述电子烟盒电池单元的输出端、第二输入端连接至所述数字电位器的输出端，所述DC-DC第二输出电路的输出端连接至所述充电管理单元的输入端，所述数字电位器的输入端连接至所述微控制单元的输出端；
所述调压控制信号为调压数字控制信号；
所述数字电位器用于根据所述调压数字控制信号调节所述DC-DC第二输出电路中的输出采样反馈电阻的电阻值，进而使所述DC-DC第二输出电路输出实时调整的所述充电电压。
11、一种电子烟高效充电方法，其特征在于，所述方法包括以下步骤：
S1、电流采样电路采样所述充电管理单元的实际充电电流；
S2、微控制单元判断内设的电池恒定充电电流与所述实际充电电流的差值是否在预设范围之内；
S3、是，则转步骤S1；否，则微控制单元输出调压控制信号；
S4、可调电压输出单元根据所述调压控制信号调整输出到所述充电管理单元的充电电压，转步骤S1。
12、根据权利要求11所述的电子烟高效充电方法，其特征在于，在所述步骤S3中，所述调压控制信号为占空比可调PWM信号。
13、根据权利要求11所述的电子烟高效充电方法，其特征在于，在所述步骤S3中，所述调压控制信号为调压数字控制信号。
14、根据权利要求12所述的电子烟高效充电方法，其特征在于，所述步骤S4具体包括，
S41、DC-DC第一输出电路将电子烟盒电池单元提供的充电电源信号转换为固定直流电压输出；
S42、调压输出电路根据占空比可调PWM信号将固定直流电压进行调压处理得到调整的充电电压。
15、根据权利要求13所述的电子烟高效充电方法，其特征在于，所述步骤S4具体包括，
S41’、数字电位器接收调压数字控制信号，调节DC-DC第二输出电路的采样反馈电阻的电阻值；
S42’、DC-DC第二输出电路输出实时调整的充电电压到充电管理单元。
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CN116584713B (zh) * 2023-07-17 2023-11-10 杭州拓尔微电子有限公司 一种充电控制系统及电子烟

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