WO2019174415A1 - Circuit de charge et cigarette électronique - Google Patents

Circuit de charge et cigarette électronique Download PDF

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Publication number
WO2019174415A1
WO2019174415A1 PCT/CN2019/073129 CN2019073129W WO2019174415A1 WO 2019174415 A1 WO2019174415 A1 WO 2019174415A1 CN 2019073129 W CN2019073129 W CN 2019073129W WO 2019174415 A1 WO2019174415 A1 WO 2019174415A1
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WO
WIPO (PCT)
Prior art keywords
charging
module
circuit
pin
main control
Prior art date
Application number
PCT/CN2019/073129
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English (en)
Chinese (zh)
Inventor
邱伟华
刘光泽
Original Assignee
常州市派腾电子技术服务有限公司
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Publication of WO2019174415A1 publication Critical patent/WO2019174415A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/46—Accumulators structurally combined with charging apparatus
    • H02J7/0077—
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
    • 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
    • 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
    • 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
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • 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
    • H02J7/00302—Overcharge protection
    • 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

Definitions

  • the present invention relates to the field of electronic devices, and in particular, to a charging circuit and an electronic cigarette.
  • the existing electronic cigarette has a fast charging function, and can quickly fill the discharged electronic cigarette.
  • the technical solution of the fast charging function uses a combination of a power management IC and an inductor to make the charging current reach 2A or 3A. Because the current is large, the inductor also needs to flow a large current, so the inductor size is required to be large, generally requiring a length of 7 mm. * 7mm wide * 3mm high.
  • the power management IC and the inductor space occupy a large area, especially for the electronic cigarette space charged by the parallel battery, which is wasteful and costly.
  • the existing ordinary charging IC can only charge 1A at most, the circuit is simple, the price is cheap, but the charging current is too small.
  • the invention provides a charging circuit and an electronic cigarette, which can solve the problem that the space occupied by the electronic cigarette charged by the parallel battery is large and the cost is high.
  • the invention discloses a charging circuit, which comprises a first charging module, a second charging module and a monitoring module.
  • the first charging module includes a power input end, a charging output end, and a charging detection output end.
  • the power input end of the first charging module is connected to an external power source, and the charging output end of the first charging module is connected to the battery.
  • the charging detection output terminal of the first charging module outputs a charging signal according to the charging state or a charging or a full signal to the charging detection input terminal of the main control circuit.
  • the second charging module includes a power input end, an enable end, and a charging output end.
  • the power input end of the second charging module is connected to the external power source, and the enable end of the second charging module and the main control circuit
  • the enable output terminals are connected, and the charge output end of the second charging module is connected to the battery.
  • the monitoring module includes a monitoring end and an output end, and the monitoring end of the monitoring module is connected to the power input end of the first charging module, and the output end of the monitoring module outputs a monitoring voltage to the power monitoring of the main control circuit
  • the enabling end enables the main control circuit to enable the charging of the second charging module when the charging detection output of the first charging module outputs a charging signal and the monitoring voltage is not lower than a stable threshold voltage And thereby controlling to cause the second charging module to charge the battery.
  • the main control circuit stops enabling the said when the charging detection output of the first charging module outputs a non-charging or full signal or the monitoring voltage is lower than the stable threshold voltage. An enable end of the second charging module, thereby controlling the second charging module to stop charging the battery.
  • the first charging module includes a first charging chip, a first resistor, a second resistor, and a first capacitor.
  • the first charging chip includes a power input pin, a charging output pin, a charging detection output pin, and a charging current programming pin, and the power input pin of the first charging chip is a power input end of the first charging module, where the The charging output pin of a charging chip is a charging output end of the first charging module, and the charging detection output pin of the first charging chip is a charging detecting output end of the first charging module.
  • the first end of the first resistor is connected to a charging current programming pin of the first charging chip, and the second end of the first resistor is grounded.
  • the first end of the second resistor is connected to the power input pin of the first charging chip, and the second end of the second resistor is connected to the charge detecting output pin of the first charging chip.
  • the first end of the first capacitor is connected to the power input pin of the first charging chip, and the second end of the first capacitor is grounded.
  • the first charging chip includes an enable pin, and an enable pin of the first charging chip is connected to a power input pin of the first charging chip.
  • the second charging module includes a second charging chip, a third resistor, and a second capacitor.
  • the second charging chip includes a power input pin, a charging output pin, an enable pin and a charging current programming pin, and a power input pin of the second charging chip is a power input end of the second charging module, and the second The charging output pin of the charging chip is a charging output end of the second charging module, and the enabling pin of the second charging chip is an enabling end of the second charging module.
  • the first end of the third resistor is connected to the charging current programming pin of the second charging chip, and the second end of the third resistor is grounded.
  • the first end of the second capacitor is connected to the power input pin of the second charging chip, and the second end of the second capacitor is grounded.
  • the monitoring module includes a fourth resistor and a fifth resistor, a first end of the fourth resistor is a monitoring end of the monitoring module, and a second end of the fourth resistor is the The output end of the monitoring module, the first end of the fifth resistor is connected to the second end of the fourth resistor, and the second end of the fifth resistor is grounded.
  • the charging circuit includes a third capacitor and a fourth capacitor, a first end of the third capacitor is connected to the external power source, and a second end of the third capacitor is grounded, A first end of the fourth capacitor is coupled to the battery, and a second end of the fourth capacitor is coupled to ground.
  • the invention also provides an electronic cigarette comprising the above charging circuit.
  • the electronic cigarette includes a main control circuit and an atomization circuit, and an atomization control output end of the main control circuit is connected to an atomization control input end of the atomization circuit, and the main control circuit It is responsible for controlling the working state of the atomizing circuit; the charging circuit is connected to the main control circuit, and the charging circuit supplies power to the main control circuit.
  • the electronic cigarette includes a battery, and the battery is respectively connected to the charging circuit, the main control circuit, and the atomizing circuit, and the charging circuit performs charging current management on the battery.
  • the battery provides electrical energy to the main control circuit and the atomization circuit.
  • the invention provides a charging circuit and an electronic cigarette, which prevent charging and leakage of the battery when the battery is not charged, and the external power source is protected by the charging control of the connected main control circuit.
  • the intelligent charging of the battery, and the charging circuit does not use the inductor with a large space, the space occupied area is small, the cost is low, and the electronic cigarette has the characteristics of small size and lightness.
  • FIG. 1 is a schematic structural view of a charging circuit according to a first embodiment of the present invention
  • FIG. 2 is a circuit connection diagram of a charging circuit of a second embodiment of the present invention.
  • Fig. 3 is a schematic structural view of an electronic cigarette according to a third embodiment of the present invention.
  • the enable terminal of the second charging module 120 and the main control circuit 400 are enabled.
  • the output ends are connected, and the charging output end of the second charging module 120 is connected to the battery 300.
  • the monitoring module 130 includes a monitoring end and an output end.
  • the monitoring end of the monitoring module 130 is connected to the power input end of the first charging module 110.
  • the output end of the monitoring module 130 outputs a monitoring voltage to the power monitoring input end of the main control circuit 400, so that
  • the main control circuit 400 enables the enable end of the second charging module 120 when the charging detection output of the first charging module 110 outputs the charging signal and the monitoring voltage is not lower than the stable threshold voltage, thereby controlling the second charging module 120.
  • the battery 300 is charged.
  • the main control circuit 400 stops enabling the second charging module 120 when the charging detection output of the first charging module 110 outputs a non-charging or full signal or the monitoring voltage is lower than the stable threshold voltage. End, thereby controlling the second charging module 120 to stop charging the battery 300.
  • the first charging module 110 may output a charging signal or a non-charging or full-filling signal to the charging detection input end of the main control circuit 400 according to the charging state at the charging detection output end of the first charging module 110, and then the main control circuit 400
  • the charging state information of the first charging module 110 may be received, and the charging state of the charging circuit 100 is confirmed.
  • the main control circuit 400 obtains the charging state from the charging detection output end of the first charging module 110, and determines whether to further drive the second charging module 120 for rapid charging, thereby preventing generation when the battery 300 is not charged. Overcharge after leakage and full charge.
  • the present embodiment can determine the input current capability of the external power source 200 for charging the battery 300 through the output end of the monitoring module 130, and then can drive the second charging module 120 to perform fast charging, or stop driving the second charging module 120 to the external power source 200.
  • the protection is performed, that is, the main control circuit 400 determines the input current capability of the external power source 200 to charge the battery 300 from the output end of the monitoring module 130, and thereby determines whether to further drive the second charging module 120 for fast charging.
  • a corresponding signal must be obtained from the charging detection output end of the first charging module 110 and the output end of the monitoring module 130. For example, the charging detection output of the first charging module 110 is charged.
  • the state is the corresponding signal in the charging, and at the same time, the monitoring voltage outputted by the output end of the monitoring module 130 is not lower than the stable threshold voltage, so that the second charging module 120 can be further driven to perform rapid charging, thereby preventing leakage when the battery 300 is not charged. And the overcharge after the full charge, the external power supply 200 is also protected, and smart charging is realized.
  • the main control circuit 400 can further drive the second charging module to achieve fast charging. At this time, the main control circuit 400 can determine whether to output the enable control signal to the enable end of the second charging module 120 according to the monitoring voltage outputted by the output end of the monitoring module 130, thereby controlling whether the second charging module 120 charges the battery 300. .
  • the main control circuit 400 can pass the main The enable output terminal of the control circuit 400 outputs an enable control signal to the connected second charging module 120, and drives the second charging module 120 to output a charging current such as 1A, and the charging output terminal of the first charging module 110 outputs a charging current such as 1A.
  • the battery 300 can be charged up to a current of 2 A to quickly charge the battery 300.
  • the main control circuit 400 can stop the enable terminal outputting the enable control signal to the enable terminal of the second charging module 120 through the enable output terminal, so that the second charging module 120 stops charging the battery 300, thereby protecting the external power source 200.
  • the charging circuit 100 of the present embodiment prevents the occurrence of leakage and overcharge after the battery 300 is not charged by the charging control of the connected main control circuit 400, and also protects the external power source 200 to realize the battery.
  • the smart charging of 300, and the charging circuit 100 does not use the inductor with a large space, the space occupied area is small, the cost is low, and the electronic cigarette has the characteristics of small size and lightness.
  • Fig. 2 is a circuit connection diagram of a charging circuit 100 according to a second embodiment of the present invention.
  • the charging circuit 100 of this embodiment is substantially the same as the first embodiment, except that the first charging module 110 includes a first charging chip U1, a first resistor R1, a second resistor R2, and a first A capacitor C1.
  • the first charging chip U1 includes a power input pin 111, a charging output pin 112, a charging detection output pin 113, and a charging current programming pin 114.
  • the power input pin 111 of the first charging chip U1 is a power input end of the first charging module 110.
  • the charging output pin 112 of the charging chip U1 is the charging output end of the first charging module 110, and the charging detection output pin 113 of the first charging chip U1 is the charging detection output end of the first charging module 110.
  • the first end of the first resistor R1 is connected to the charging current programming pin 114 of the first charging chip U1, and the second end of the first resistor R1 is grounded, and the first resistor R1 can function to adjust the charging current, for example, the first resistor.
  • R1 is 1.1K ohms
  • the charging output end of the first charging chip U1 can correspond to an output charging current of 1A.
  • the first end of the second resistor R2 is connected to the power input pin 111 of the first charging chip U1, and the second end of the second resistor R2 is connected to the charge detecting output pin 113 of the first charging chip U1, and the second resistor R2 can be used as the second resistor R2.
  • the pull-up resistor can output a corresponding voltage at the charge detection output pin 113 of the first charging chip U1 according to the state of charge.
  • the main control circuit 400 can detect the state of charge by detecting the state of charge at the charge detection output pin 113 of the first charging chip U1, for example, when the charge detection output pin 113 of the first charging chip U1 outputs a low level, indicating charging.
  • the state is charging; when the charging detection output pin 113 of the first charging chip U1 outputs a high level, it indicates that the charging state is not charging or being full.
  • the first end of the first capacitor C1 is connected to the power input pin 111 of the first charging chip U1, and the second end of the first capacitor C1 is grounded, and the first capacitor C1 can receive the power input pin 111 of the first charging chip U1.
  • the signal acts as a filter, such as filtering out current spikes in the external power supply 200 signal.
  • the second charging module 120 may include a second charging chip U2, a third resistor R3, and a second capacitor C2.
  • the second charging chip U2 includes a power input pin 121, a charging output pin 122, an enable pin 123, and a charging current programming pin 124.
  • the power input pin 121 of the second charging chip U2 is a power input end of the second charging module 120
  • a second The charging output pin 122 of the charging chip U2 is the charging output end of the second charging module 120
  • the enabling pin 123 of the second charging chip U2 is the enabling end of the second charging module 120.
  • the first end of the third resistor R3 is connected to the charging current programming pin 124 of the second charging chip U2, and the second end of the third resistor R3 is grounded, and the third resistor R3 can function to adjust the charging current, for example, the third resistor.
  • the charging output terminal of the second charging chip U2 can correspond to an output charging current of 1A.
  • the first end of the second capacitor C2 is connected to the power input pin 121 of the second charging chip U2, and the second end of the second capacitor C2 is grounded, and the second capacitor C2 can receive the power input pin 121 of the second charging chip U2.
  • the signal acts as a filter, such as filtering current spikes from external power signals.
  • the monitoring module 130 can include, but is not limited to, a fourth resistor R4 and a fifth resistor R5.
  • the first end of the fourth resistor R4 is the monitoring end of the monitoring module 130, and the second end of the fourth resistor R4 is the output end of the monitoring module 130.
  • the first end of the fifth resistor R5 is connected to the second end of the fourth resistor R4, the second end of the fifth resistor R5 is grounded, and the output end of the monitoring module 130 is connected to the external power source 200, and the output of the monitoring module 130 is output.
  • the monitoring voltage is the voltage of the fourth resistor R4 and the fifth resistor R5 of the external power source voltage.
  • the monitoring voltage is input to the power monitoring input terminal of the main control circuit 400, so that the main control circuit 400 determines whether to output an enable control signal to the enable end of the second charging module 120 according to the monitoring voltage, thereby controlling whether the second charging module 120 is The battery 300 is charged.
  • the first charging chip U1 may include an enabling pin 115.
  • the enabling pin 115 of the first charging chip U1 may be connected to the power input pin 111 of the first charging chip U1, so that the first When the power input pin 111 of the charging chip U1 receives the external power supply voltage, the enable pin 115 of the first charging chip U1 also receives an enable signal formed by the external power supply voltage, and directly drives the first charging chip U1 to operate, the first charging.
  • the charging output terminal of the chip U1 outputs a charging current; it can also be connected to the main control circuit 400, and the main control circuit 400 outputs an enable signal to drive the first charging chip U1 to operate and the like.
  • the charging circuit 100 includes a third capacitor C3 and a fourth capacitor C4.
  • the first end of the third capacitor C3 is connected to the external power source 200, the second end of the third capacitor C3 is grounded, and the third capacitor C3 can The external power supply 200 signal is filtered; the first end of the fourth capacitor C4 is connected to the battery 300, the second end of the fourth capacitor C4 is grounded, and the fourth capacitor C4 can filter and store the external power supply 200 signal.
  • the first charging chip U1 and the second charging chip U2 may have the same model number, and the model number may be, but not limited to, AP5056.
  • the power input pin 111 of the first charging chip U1 is a VCC pin
  • the charging output pin 112 is a BAT pin
  • the charging detection output pin 113 is a CHRE pin
  • the charging current programming pin 114 is a PROG pin.
  • the power input pin 121 of the second charging chip U2 is a VCC pin
  • the charging output pin 122 is a BAT pin
  • the enable pin 123 is a CE pin
  • the charging current programming pin 124 is a PROG pin.
  • the power input pin 111 of the first charging chip U1 can receive an external power supply voltage, for example, 5V, and the first charging chip U1 is driven by an external power supply voltage.
  • the charging output pin 112 of a charging chip U1 outputs a charging current to charge the battery 300.
  • the main control circuit 400 can further drive the second charging chip U2 to achieve fast charging. At this time, the main control circuit 400 can determine whether to output the enable control signal to the enable end of the second charging module 120 according to the monitoring voltage outputted by the output end of the monitoring module 130, thereby controlling whether the second charging module 120 charges the battery 300. . For example, if the stable threshold voltage is set to a voltage of 1.2V, and the monitoring voltage outputted by the output of the monitoring module 130, that is, the monitoring voltage after the fourth resistor R4 and the fifth resistor R5 are divided, the voltage is 1.4V, the monitoring voltage is 1.4V.
  • the main control circuit 400 can output the enable control signal to the enable pin 123 of the second charging chip U2 through the enable output terminal thereof, and drive the second charging chip U2 to output a charging current, for example, 1A. While the charging output terminal of the first charging chip U1 outputs a charging current of, for example, 1 A, the battery 300 can perform charging to increase the current to 2 A, thereby rapidly charging the battery 300.
  • the monitoring voltage 1V is lower than the stable threshold voltage of 1.2V, indicating that the input power capability of the external power source 200 for charging the battery 300 is insufficient, and the main The control circuit 400 can stop the enable pin 123 outputting the enable control signal to the second charging chip U2 through its enable output terminal, so that the second charging chip U2 stops charging the battery 300, thereby protecting the external power source 200.
  • the main control circuit 400 stops passing through the main regardless of the magnitude of the stable threshold voltage and the monitored voltage.
  • the enable output of the control circuit 400 outputs an enable control signal such that the second charge chip U2 stops charging the battery 300, preventing leakage and overcharge after the battery 300 is not being charged.
  • the charging circuit 100 of the present embodiment prevents the occurrence of leakage and overcharge after the battery 300 is not charged by the charging control of the connected main control circuit 400, and also protects the external power source 200 to realize the battery.
  • the smart charging of 300, and the charging circuit 100 does not use the inductor with a large space, the space occupied area is small, the cost is low, and the electronic cigarette has the characteristics of small size and lightness.
  • FIG. 3 is a schematic structural view of an electronic cigarette according to a third embodiment of the present invention.
  • the embodiment is basically the same as the first embodiment, and the difference is that the electronic cigarette includes a main control circuit 400 and an atomization circuit 500, and an atomization control output end and an atomization circuit of the main control circuit 400.
  • the atomization control input end of the 500 is connected, the main control circuit 400 is responsible for controlling the working state of the atomization circuit 500; the charging circuit 100 is connected to the main control circuit 400, and the charging circuit 100 supplies power to the main control circuit 400.
  • the main control circuit 400 is connected to the atomization circuit 500, and the main control circuit 400 is responsible for controlling the operation state of the atomization circuit 500.
  • the electronic cigarette includes a battery 300, and the battery 300 is respectively connected to the charging circuit 100, the main control circuit 400, and the atomizing circuit 500.
  • the charging circuit 100 performs charging current management on the battery 300, and the battery 300 is the main control circuit 400.
  • the atomizing circuit 500 provides electrical energy.
  • the power input terminal of the first charging module 110 can receive an external power source voltage, for example, 5V, and the first charging module 110 is driven by the external power source voltage, and then the charging of the first charging module 110 is performed.
  • the output terminal can output a charging current such as 1 A and charge the connected battery 300.
  • the monitoring end of the monitoring module 130 is connected to the power input end of the first charging module 110.
  • the monitoring module 130 can be used to monitor the signal change of the external power source 200, and output a corresponding monitoring voltage at the output end of the monitoring module 130, and monitor The output end of the module 130 is connected to the power monitoring input end of the main control circuit 400, so that the main control circuit 400 determines whether to output an enable control signal to the enable end of the second charging module 120 according to the monitoring voltage, thereby controlling the second charging module. 120 Whether to charge the battery 300.
  • the main control circuit 400 can be, but is not limited to, comparing the monitoring voltage with the stable threshold voltage to confirm the input current capability of the external power source 200 to charge the battery 300, and thus can drive the second charging module 120 to perform fast charging, or can stop driving.
  • the second charging module 120 protects the external power source 200 to realize smart charging.
  • the enable output end of the main control circuit 400 outputs an enable control signal to the enable end of the second charging module 120, so that the second charging module 120
  • the battery 300 is charged to quickly charge the battery 300; when the monitoring voltage is lower than the stable threshold voltage, the enable output of the main control circuit 400 stops outputting the enable control signal, so that the second charging module 120 stops the battery 300.
  • the external power source 200 is protected by charging.
  • the stable threshold voltage can be, but is not limited to, set to a voltage of 1.2V. If the monitoring voltage is 1.4V, and the monitoring voltage is 1.4V not lower than the stable threshold voltage of 1.2V, the main control circuit 400 can pass through the main control circuit 400.
  • the enable output terminal outputs an enable control signal to the connected second charging module 120, and drives the second charging module 120 to output a charging current, for example, 1A, and the charging output terminal of the first charging module 110 outputs a charging current, for example, 1A, and the battery 300
  • the battery 300 can be quickly charged by charging to a current of 2 A.
  • the monitoring voltage is a voltage of 1V
  • the monitoring voltage 1V is lower than the stable threshold voltage of 1.2V, indicating that the input current capability of the external power source 200 for charging the battery 300 is insufficient, whereby the main control circuit 400 can stop passing through the main control circuit 400.
  • the output terminal can output the enable control signal, and the second charging module 120 stops charging the battery 300 to protect the external power source 200.
  • the first charging chip U1 includes a charging detection output pin 113, and the charging detection output pin 113 of the first charging chip U1 is connected to the charging detection input terminal of the main control circuit 400.
  • the main control circuit 400 obtains the charging state from the charging detection output end of the first charging module 110, and determines whether to further drive the second charging module 120 for rapid charging, thereby preventing generation when the battery 300 is not charged. Overcharge after leakage and full charge.
  • the electronic cigarette of the embodiment includes a charging circuit 100, a main control circuit 400, an atomizing circuit 500, and a battery 300. In addition to the smoking function of the electronic cigarette itself, it also has a function of fast charging.
  • the charging control of the charging circuit 100 by the main control circuit 400 prevents leakage and overcharge after the battery is not charged, and also protects the external power source, thereby realizing intelligent charging of the battery 300, and
  • the charging circuit 100 does not use an inductor with a large space, has a small space occupation area, and has low cost, and the electronic cigarette has the characteristics of small size and lightness.

Abstract

L'invention concerne un circuit de charge, comprenant un premier module de charge, un second module de charge et un module de surveillance, le premier module de charge et le second module de charge étant tous deux connectés respectivement à un circuit de commande principal, une alimentation électrique externe et une batterie ; et une extrémité de surveillance du module de surveillance étant connectée à une extrémité d'entrée d'alimentation électrique du premier module de charge, et une extrémité de sortie du module de surveillance délivrant une tension de surveillance à une extrémité d'entrée de surveillance d'alimentation électrique du circuit de commande principal, de telle sorte que le circuit de commande principal permet à une extrémité d'activation du second module de charge de charger la batterie lorsqu'une extrémité de sortie de détection de charge du premier module de charge émet un signal indiquant que la charge est en cours d'exécution, et lorsque la tension de surveillance n'est pas inférieure à une tension seuil stable. L'invention concerne également une cigarette électronique. Selon le circuit de charge et la cigarette électronique de la présente invention, par réalisation d'une commande de charge au moyen d'un circuit de commande principal connecté, une batterie est chargée de manière intelligente, et un circuit de charge n'utilise pas d'inducteur qui occupe plus d'espace, de telle sorte que la zone d'espace occupée est petite et le coût est faible. Les caractéristiques de la cigarette électronique sont qu'elle est petite et portable.
PCT/CN2019/073129 2018-03-16 2019-01-25 Circuit de charge et cigarette électronique WO2019174415A1 (fr)

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CN109245248A (zh) * 2018-11-27 2019-01-18 湖南衡盈电子科技有限公司 充电控制电路
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