CN108390432B - Charging circuit and electronic cigarette - Google Patents
Charging circuit and electronic cigarette Download PDFInfo
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- CN108390432B CN108390432B CN201810220425.1A CN201810220425A CN108390432B CN 108390432 B CN108390432 B CN 108390432B CN 201810220425 A CN201810220425 A CN 201810220425A CN 108390432 B CN108390432 B CN 108390432B
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- 239000003571 electronic cigarette Substances 0.000 title claims abstract description 28
- 238000012544 monitoring process Methods 0.000 claims abstract description 89
- 238000001514 detection method Methods 0.000 claims abstract description 46
- 239000003990 capacitor Substances 0.000 claims description 40
- 238000000889 atomisation Methods 0.000 claims description 24
- 230000000087 stabilizing effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
- 235000019504 cigarettes Nutrition 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 2
- 230000000391 smoking effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- H02J7/0077—
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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
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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
- H01M10/425—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
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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
-
- 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
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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
- H01M10/425—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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention provides a charging circuit which comprises a first charging module, a second charging module and a monitoring module. The first charging module and the second charging module are respectively connected with the main control circuit, the external power supply and the battery. The monitoring end of the monitoring module is connected with the power input end of the first charging module, and the output end of the monitoring module outputs monitoring voltage to the power monitoring input end of the main control circuit, so that the main control circuit enables the enabling end of the second charging module to charge the battery when the charging detection output end of the first charging module outputs a charging signal and the monitoring voltage is not lower than a stable threshold voltage. The invention also provides the electronic cigarette. The charging circuit and the electronic cigarette realize intelligent charging of the battery through the charging control of the connected main control circuit, the charging circuit does not use an inductor occupying a large space, the occupied space is small, the cost is low, and the electronic cigarette has the characteristics of small size and portability.
Description
Technical Field
The invention relates to the field of electronic equipment, in particular to a charging circuit and an electronic cigarette.
Background
In order to provide more experience for users, besides the smoking function, the existing electronic cigarette is also provided with a plurality of functions, such as multimedia browsing, touch screen operation, GPS (Global Positioning System) navigation, solar charging and the like, and the existing electronic cigarette is used for better promoting electronic cigarette products of various manufacturers. Wherein, for the convenience of customer's use, current electron cigarette has the quick charge function, can be full of fast the electron cigarette that has discharged.
However, in the technical scheme of the fast charging function, the power management IC and the inductor are combined to make the charging current reach about 2A or 3A, and since the current is large, the inductor also needs to flow a large current, the size of the inductor is required to be large, and the inductor generally needs to be 7mm long, 7mm wide, and 3mm high. The power management IC and the inductor occupy larger space, and especially the electronic cigarette charged by the parallel batteries has larger space waste and higher cost. The existing common charging IC can only carry out 1A charging at most, the circuit is simple, the price is low, but the charging current is too small.
Disclosure of Invention
The invention provides a charging circuit and an electronic cigarette, which can solve the problems of large occupied space and high cost of the electronic cigarette charged by a parallel battery.
The technical scheme is as follows:
the invention discloses a charging circuit which comprises a first charging module, a second charging module and a monitoring module. The first charging module comprises 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 with an external power supply, the charging output end of the first charging module is connected with a battery, and the charging detection output end of the first charging module outputs a charging signal or a non-charging or full-charging signal to the charging detection input end of the main control circuit according to a charging state. The second charging module comprises a power input end, an enabling end and a charging output end, the power input end of the second charging module is connected with the external power supply, the enabling end of the second charging module is connected with the enabling output end of the main control circuit, and the charging output end of the second charging module is connected with the battery. The monitoring module comprises a monitoring end and an output end, the monitoring end of the monitoring module is connected with the power input end of the first charging module, the output end of the monitoring module outputs monitoring voltage to the power monitoring input end of the main control circuit, so that the main control circuit outputs a charging signal from the charging detection output end of the first charging module, the monitoring voltage is not lower than a stable threshold voltage, the enabling end of the second charging module is enabled, and the second charging module is controlled to charge the battery.
In one embodiment, the main control circuit stops enabling the enabling terminal of the second charging module when the charging detection output terminal of the first charging module outputs a non-charging or full-charging signal or the monitoring voltage is lower than the stable threshold voltage, so as to control the second charging module to stop charging the battery.
In one embodiment, the first charging module includes a first charging chip, a first resistor, a second resistor, and a first capacitor. The first charging chip comprises a power input pin, a charging output pin, a charging detection output pin and a charging current programming pin, the power input pin of the first charging chip is the power input end of the first charging module, the charging output pin of the first charging chip is the charging output end of the first charging module, and the charging detection output pin of the first charging chip is the charging detection output end of the first charging module. The first end of the first resistor is connected with 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 with the power input pin of the first charging chip, and the second end of the second resistor is connected with the charging detection output pin of the first charging chip. The first end of the first capacitor is connected with the power input pin of the first charging chip, and the second end of the first capacitor is grounded.
In one embodiment, the first charging chip comprises an enabling pin, and the enabling pin of the first charging chip is connected with the power input pin of the first charging chip.
In one embodiment, the second charging module includes a second charging chip, a third resistor, and a second capacitor. The second chip that charges includes power input foot, the output pin that charges, enable foot and charging current programming foot, the power input foot of second chip that charges does the power input end of the module is charged to the second, the output pin that charges of second chip that charges does the output that charges of module is charged to the second, the enable foot of second chip that charges does the enable end of the module is charged to the second. And the first end of the third resistor is connected with a charging current programming pin of the second charging chip, and the second end of the third resistor is grounded. And the first end of the second capacitor is connected with the power input pin of the second charging chip, and the second end of the second capacitor is grounded.
In one embodiment, the monitoring module includes a fourth resistor and a fifth resistor, a first terminal of the fourth resistor is a monitoring terminal of the monitoring module, a second terminal of the fourth resistor is an output terminal of the monitoring module, a first terminal of the fifth resistor is connected to a second terminal of the fourth resistor, and a second terminal of the fifth resistor is grounded.
In one embodiment, 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, a second end of the third capacitor is grounded, a first end of the fourth capacitor is connected to the battery, and a second end of the fourth capacitor is grounded.
The invention also provides an electronic cigarette which comprises the charging circuit.
In one embodiment, the electronic cigarette comprises a main control circuit and an atomization circuit, wherein the atomization control output end of the main control circuit is connected with the atomization control input end of the atomization circuit, and the main control circuit is used for controlling the working state of the atomization circuit; the charging circuit is connected with the main control circuit and supplies power to the main control circuit.
In one embodiment, the electronic cigarette comprises a battery, the battery is respectively connected with the charging circuit, the main control circuit and the atomization circuit, the charging circuit carries out charging current management on the battery, and the battery provides electric energy for the main control circuit and the atomization circuit.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
the invention provides a charging circuit and an electronic cigarette, which prevent the generation of leakage when a battery is not charged and overcharge after being charged through the charging control of a connected main control circuit, protect an external power supply, realize the intelligent charging of the battery, do not use an inductor with larger occupied space, have small occupied space and low cost, and have the characteristics of small volume and light weight.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic structural diagram of a charging circuit according to a first embodiment of the present invention;
fig. 2 is a circuit connection diagram of a charging circuit according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of an electronic cigarette according to a third embodiment of the present invention.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the charging circuit and the electronic cigarette according to the present invention with reference to the accompanying drawings and preferred embodiments will be made to show the following detailed descriptions.
The foregoing and other technical and scientific aspects, features and advantages of the present invention will be apparent from the following detailed description of preferred embodiments, which is to be read in connection with the accompanying drawings. While the present invention has been described in terms of embodiments and examples, which are intended to achieve the objects and advantages specified, the drawings are for reference and illustrative purposes only and are not intended to be limiting.
First embodiment
Fig. 1 is a schematic structural diagram of a charging circuit 100 according to a first embodiment of the present invention. As shown in fig. 1, the charging circuit 100 includes a first charging module 110, a second charging module 120, and a monitoring module 130. The first charging module 110 includes a power input terminal, a charging output terminal, and a charging detection output terminal, the power input terminal of the first charging module 110 is connected to the external power supply 200, the charging output terminal of the first charging module 110 is connected to the battery 300, and the charging detection output terminal of the first charging module 110 is connected to the charging detection input terminal of the main control circuit 400. The second charging module 120 includes a power input terminal, an enable terminal, and a charging output terminal, the power input terminal of the second charging module 120 is connected to the external power source 200, the enable terminal of the second charging module 120 is connected to the enable output terminal of the main control circuit 400, and the charging output terminal of the second charging module 120 is connected to the battery 300. The monitoring module 130 includes a monitoring terminal and an output terminal, the monitoring terminal of the monitoring module 130 is connected to the power input terminal of the first charging module 110, the output terminal of the monitoring module 130 outputs a monitoring voltage to the power monitoring input terminal of the main control circuit 400, so that the main control circuit 400 enables the enabling terminal of the second charging module 120 when the charging detection output terminal of the first charging module 110 outputs a charging signal and the monitoring voltage is not lower than a stable threshold voltage, thereby controlling the second charging module 120 to charge the battery 300.
In one embodiment, the main control circuit 400 stops enabling the enable terminal of the second charging module 120 when the charging detection output terminal of the first charging module 110 outputs the no-charging or full-charging signal or the monitoring voltage is lower than the stable threshold voltage, so as to control the second charging module 120 to stop charging the battery 300.
Specifically, the first charging module 110 may output a charging signal or a no-charging or full-charging signal to the charging detection input terminal of the main control circuit 400 at the charging detection output terminal of the first charging module 110 according to the charging state, and then the main control circuit 400 may receive the charging state information of the first charging module 110 and confirm the charging state of the charging circuit 100. In the charging process, the main control circuit 400 obtains the charging state from the charging detection output terminal of the first charging module 110, and determines whether to further drive the second charging module 120 for fast charging, thereby preventing the occurrence of leakage when the battery 300 is not charged and overcharge after full charging. Meanwhile, in this embodiment, the output end of the monitoring module 130 may be used to determine the input current capability of the external power supply 200 for charging the battery 300, and further may drive the second charging module 120 to perform fast charging, or stop driving the second charging module 120 to protect the external power supply 200, that is, the main control circuit 400 determines the input current capability of the external power supply 200 for charging the battery 300 from the output end of the monitoring module 130, and thus determines whether to further drive the second charging module 120 to perform fast charging. Then, to drive the second charging module 120 for fast charging, corresponding signals must be obtained from the charging detection output terminal of the first charging module 110 and the output terminal of the monitoring module 130 at the same time, for example, the charging detection output terminal of the first charging module 110 obtains a corresponding signal that the charging state is in charging, and the monitoring voltage output by the output terminal of the monitoring module 130 is not lower than the stable threshold voltage, so as to further drive the second charging module 120 for fast charging, thereby preventing the occurrence of leakage and overcharge after full charging when the battery 300 is not charged, protecting the external power supply 200, and realizing intelligent charging.
Moreover, when the charging detection output terminal of the first charging module 110 outputs a corresponding signal, such as a low level signal, whose charging state is being charged, the main control circuit 400 may further drive the second charging module to implement fast charging. At this time, the main control circuit 400 may determine whether to output the enable control signal to the enable terminal of the second charging module 120 according to the monitoring voltage output by the output terminal of the monitoring module 130, so as to control whether the second charging module 120 charges the battery 300. For example, if the stable threshold voltage is set to be 1.2V, and the monitoring voltage output by the output terminal of the monitoring module 130 is 1.4V, the monitoring voltage 1.4V is not lower than the stable threshold voltage 1.2V, the main control circuit 400 may output an enable control signal to the connected second charging module 120 through the enable output terminal of the main control circuit 400, so as to drive the second charging module 120 to output a charging current, for example, 1A, and the charging output terminal of the first charging module 110 to output a charging current, for example, 1A, so that the battery 300 may be charged by increasing the current to 2A, thereby rapidly charging the battery 300. If the monitoring voltage is 1V, the monitoring voltage 1V is lower than the stable threshold voltage 1.2V, which indicates that the input current capability of the external power supply 200 to charge the battery 300 is insufficient, and thus, the circuit cannot further drive the second charging module 120 to perform fast charging, the main control circuit 400 may stop outputting the enable control signal to the enable terminal of the second charging module 120 through the enable output terminal thereof, so that the second charging module 120 stops charging the battery 300, thereby protecting the external power supply 200.
When the charging detection output terminal of the first charging module 110 outputs a corresponding signal, such as a high level signal, indicating that the charging state is not charging or fully charged, the circuit cannot further drive the second charging module 120 to perform fast charging, regardless of the stable threshold voltage and the monitoring voltage, the main control circuit 400 stops outputting the enable control signal through the enable output terminal of the main control circuit 400, and the second charging module 120 stops charging the battery 300, thereby preventing the occurrence of leakage and overcharge after full charging when the battery 300 is not charged.
The charging circuit 100 of this embodiment, through the charge control of the main control circuit 400 who links to each other, has prevented the production when the battery 300 does not charge that to leak and the overcharge after being full of, has also protected external power source 200, has realized the intelligent charging to battery 300, and charging circuit 100 does not use the great inductance of occupation space, and the space occupation area is little, with low costs, and the electron cigarette has small and exquisite, light characteristics.
Second embodiment
Fig. 2 is a circuit connection diagram of a charging circuit 100 according to a second embodiment of the present invention. As shown in fig. 2, the charging circuit 100 of the present embodiment is substantially the same as the first embodiment, and the difference is that: the first charging module 110 includes a first charging chip U1, a first resistor R1, a second resistor R2, and a first 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 first charging chip U1 is a charging output end of the first charging module 110, and the charging detection output pin 113 of the first charging chip U1 is a 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, so that the first resistor R1 can adjust the charging current, for example, when the first resistor R1 is 1.1K ohm, the charging output end of the first charging chip U1 can output a 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 charging detection output pin 113 of the first charging chip U1, so that the second resistor R2 can be used as a pull-up resistor, and the charging detection output pin 113 of the first charging chip U1 can output a corresponding voltage according to the charging state. Specifically, the main control circuit 400 may obtain the charging state by detecting the charging state at the charging detection output pin 113 of the first charging chip U1, for example, when the charging detection output pin 113 of the first charging chip U1 outputs a low level, it indicates that the charging state is charging; when the charge detection output pin 113 of the first charging chip U1 outputs a high level, it indicates that the charging state is not charged or fully charged. The first terminal of the first capacitor C1 is connected to the power input pin 111 of the first charging chip U1, and the second terminal of the first capacitor C1 is connected to ground, so that the first capacitor C1 can filter the received signal at the power input pin 111 of the first charging chip U1, such as filtering out the current spike of the external power 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 terminal of the second charging module 120, the charging output pin 122 of the second charging chip U2 is a charging output terminal of the second charging module 120, and the enable pin 123 of the second charging chip U2 is an enable terminal 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, so that the third resistor R3 can adjust the charging current, for example, when the third resistor R3 is 1.1K ohms, the charging output end of the second charging chip U2 can correspondingly output a charging current of 1A. The first terminal of the second capacitor C2 is connected to the power input pin 121 of the second charging chip U2, and the second terminal of the second capacitor C2 is grounded, so that the second capacitor C2 can filter the received signal of the power input pin 121 of the second charging chip U2, such as filtering out the current spike of the external power signal.
The monitoring module 130 may include, but is not limited to, a fourth resistor R4 and a fifth resistor R5, a first end of the fourth resistor R4 is a monitoring end of the monitoring module 130, a second end of the fourth resistor R4 is an output end of the monitoring module 130, a first end of the fifth resistor R5 is connected to a second end of the fourth resistor R4, a second end of the fifth resistor R5 is grounded, and an output end of the monitoring module 130 is connected to the external power supply 200, so that the monitoring voltage output by the output end of the monitoring module 130 is a voltage divided by the fourth resistor R4 and the fifth resistor R5 of the external power supply 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 terminal of the second charging module 120 according to the monitoring voltage, thereby controlling whether the second charging module 120 charges the battery 300.
In one embodiment, the first charging chip U1 may include an enable pin 115, the enable pin 115 of the first charging chip U1 may be, but is not limited to be, connected to the power input pin 111 of the first charging chip U1, so that when the power input pin 111 of the first charging chip U1 receives an external power voltage, the enable pin 115 of the first charging chip U1 also receives an enable signal formed by the external power voltage, and then directly drives the first charging chip U1 to operate, and the charging output terminal of the first charging chip U1 outputs a charging current; the first charging chip U1 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.
In one embodiment, the charging circuit 100 includes a third capacitor C3 and a fourth capacitor C4, a first terminal of the third capacitor C3 is connected to the external power source 200, a second terminal of the third capacitor C3 is connected to ground, and the third capacitor C3 can filter the signal of the external power source 200; 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 energy for the external power supply 200 signal.
In one embodiment, the first charging chip U1 and the second charging chip U2 may be the same type, and may be, but are not limited to, AP 5056. 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, and 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, and the charging current programming pin 124 is a PROG pin.
Specifically, as shown in fig. 3, when the external power source 200 is connected to the charging circuit 100, the power input pin 111 of the first charging chip U1 may receive an external power voltage, for example, 5V, the first charging chip U1 is driven by the external power voltage, and the charging output pin 112 of the first charging chip U1 outputs a charging current to charge the battery 300.
When the charging detection output terminal of the first charging chip U1 outputs a corresponding signal, such as a low signal, whose charging status is in charging, the main control circuit 400 may further drive the second charging chip U2 to implement fast charging. At this time, the main control circuit 400 may determine whether to output the enable control signal to the enable terminal of the second charging module 120 according to the monitoring voltage output by the output terminal of the monitoring module 130, so as to control whether the second charging module 120 charges the battery 300. For example, if the stable threshold voltage is set to be 1.2V, and the monitoring voltage output by the output terminal of the monitoring module 130, that is, the monitoring voltage after voltage division by the fourth resistor R4 and the fifth resistor R5 is 1.4V, the monitoring voltage 1.4V is not lower than the stable threshold voltage 1.2V, the main control circuit 400 may output an enable control signal to the enable pin 123 of the second charging chip U2 through the enable output terminal thereof, drive the second charging chip U2 to output a charging current, such as 1A, and the charging output terminal of the first charging chip U1 outputs a charging current, such as 1A, so that the battery 300 may be charged by increasing the current to 2A, thereby rapidly charging the battery 300. If the monitor voltage divided by the fourth resistor R4 and the fifth resistor R5 is 1V, and the monitor voltage 1V is lower than the stable threshold voltage 1.2V, which indicates that the input current capability of the external power supply 200 for charging the battery 300 is insufficient, the main control circuit 400 may stop outputting the enable control signal to the enable pin 123 of the second charging chip U2 through the enable output terminal thereof, so that the second charging chip U2 stops charging the battery 300, thereby protecting the external power supply 200.
When the charge detection output terminal of the first charging chip U1 outputs a corresponding signal, such as a high level signal, indicating that the charging state is not charged or is fully charged, the main control circuit 400 stops outputting the enable control signal through the enable output terminal of the main control circuit 400 regardless of the stable threshold voltage and the magnitude of the monitoring voltage, so that the second charging chip U2 stops charging the battery 300, thereby preventing the occurrence of leakage when the battery 300 is not charged and overcharge after being fully charged.
The charging circuit 100 of this embodiment, through the charge control of the main control circuit 400 who links to each other, has prevented the production when the battery 300 does not charge that to leak and the overcharge after being full of, has also protected external power source 200, has realized the intelligent charging to battery 300, and charging circuit 100 does not use the great inductance of occupation space, and the space occupation area is little, with low costs, and the electron cigarette has small and exquisite, light characteristics.
Third embodiment
Fig. 3 is a schematic structural diagram of an electronic cigarette according to a third embodiment of the present invention. As shown in fig. 3, the present embodiment is substantially the same as the first embodiment, except that: the electronic cigarette comprises a main control circuit 400 and an atomization circuit 500, wherein the atomization control output end of the main control circuit 400 is connected with the atomization control input end of the atomization circuit 500, and the main control circuit 400 is used 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 working state of the atomization circuit 500.
In one embodiment, the electronic cigarette includes a battery 300, the battery 300 is respectively connected to the charging circuit 100, the main control circuit 400, and the atomization circuit 500, the charging circuit 100 performs charging current management on the battery 300, and the battery 300 provides power for the main control circuit 400 and the atomization circuit 500.
Specifically, when the external power source 200 is connected to the charging circuit 100, the power input terminal of the first charging module 110 may receive an external power voltage, for example, 5V, and the first charging module 110 is driven by the external power voltage, so that the charging output terminal of the first charging module 110 may output a charging current, for example, 1A, and charge the connected battery 300. In addition, the monitoring terminal of the monitoring module 130 is connected to the power input terminal of the first charging module 110, the monitoring module 130 may be configured to monitor a signal change of the external power source 200, and output a corresponding monitoring voltage at the output terminal of the monitoring module 130, and the output terminal of the monitoring module 130 is connected 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 terminal of the second charging module 120 according to the monitoring voltage, thereby controlling whether the second charging module 120 charges the battery 300. The main control circuit 400 may, but is not limited to, determine the input current capability of the external power supply 200 to charge the battery 300 by comparing the monitored voltage with the stable threshold voltage, and then may drive the second charging module 120 to perform fast charging, or may stop driving the second charging module 120 to protect the external power supply 200, thereby implementing intelligent charging. Specifically, in the charging process, when the monitored voltage is not lower than the stable threshold voltage, the enable output terminal of the main control circuit 400 outputs an enable control signal to the enable terminal of the second charging module 120, so that the second charging module 120 charges the battery 300, thereby rapidly charging the battery 300; when the monitoring voltage is lower than the stable threshold voltage, the enable output terminal of the main control circuit 400 stops outputting the enable control signal, so that the second charging module 120 stops charging the battery 300, thereby protecting the external power supply 200.
For example, the stable threshold voltage may be, but is not limited to, set to be 1.2V, if the monitoring voltage is 1.4V, and the monitoring voltage 1.4V is not lower than the stable threshold voltage 1.2V, the main control circuit 400 may output an enable control signal to the connected second charging module 120 through the enable output terminal of the main control circuit 400, drive the second charging module 120 to output a charging current, for example, 1A, and the charging output terminal of the first charging module 110 to output a charging current, for example, 1A, so that the battery 300 may be charged by increasing the charging current to 2A, thereby rapidly charging the battery 300. If the monitoring voltage is 1V, the monitoring voltage 1V is lower than the stable threshold voltage 1.2V, which indicates that the input current capability of the external power supply 200 to charge the battery 300 is insufficient, and thus, the main control circuit 400 may stop outputting the enable control signal through the enable output terminal of the main control circuit 400, and the second charging module 120 stops charging the battery 300, so as to protect the external power supply 200.
In one embodiment, 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 a charging detection input terminal of the main control circuit 400. In the charging process, the main control circuit 400 obtains the charging state from the charging detection output terminal of the first charging module 110, and determines whether to further drive the second charging module 120 for fast charging, thereby preventing the occurrence of leakage when the battery 300 is not charged and overcharge after full charging.
The electronic cigarette of the embodiment includes a charging circuit 100, a main control circuit 400, an atomization circuit 500, and a battery 300, and has a fast charging function in addition to the smoking function of the electronic cigarette itself. Wherein, through the charge control of main control circuit 400 to charging circuit 100, prevented the production when the battery does not charge that to leak and the overcharge after being full of, also protected external power supply, realized the intelligent charging to battery 300, and charging circuit 100 does not use the great inductance of occupation space, and the space occupation area is little, with low costs, and the electron cigarette has small and exquisite, light characteristics.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A charging circuit (100), comprising:
the first charging module (110), the first charging module (110) includes a power input end, a charging output end and a charging detection output end, the power input end of the first charging module (110) is connected with an external power supply (200), the charging output end of the first charging module (110) is connected with the battery (300), and the charging detection output end of the first charging module (110) outputs a charging signal or a non-charging or full-charging signal to the charging detection input end of the main control circuit (400) according to a charging state;
the second charging module (120), the second charging module (120) includes a power input end, an enable end and a charging output end, the power input end of the second charging module (120) is connected with the external power supply (200), the enable end of the second charging module (120) is connected with the enable output end of the main control circuit (400), and the charging output end of the second charging module (120) is connected with the battery (300);
monitoring module (130), monitoring module (130) includes monitoring end and output, monitoring end of monitoring module (130) with the power input end of first module (110) of charging links to each other, monitoring voltage is exported to monitoring voltage of monitoring module (130) the power monitoring input of master control circuit (400), so that master control circuit (400) are in the signal just in charging is exported to the detection output that charges of first module (110) of charging the monitoring voltage is not less than when stabilizing threshold voltage, enables the enable end of second module (120) of charging, thereby control second module (120) of charging is right battery (300) charge.
2. The charging circuit (100) according to claim 1, wherein the main control circuit (400) stops enabling the enabling terminal of the second charging module (120) when the charging detection output terminal of the first charging module (110) outputs a no-charging or full-charging signal or the monitoring voltage is lower than the stable threshold voltage, thereby controlling the second charging module (120) to stop charging the battery (300).
3. The charging circuit (100) of claim 1 or 2, wherein the first charging module (110) comprises a first charging chip (U1), a first resistor (R1), a second resistor (R2), and a first capacitor (C1);
the first charging chip (U1) comprises 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 first charging chip (U1) is a charging output end of the first charging module (110), and the charging detection output pin (113) of the first charging chip (U1) is a charging detection output end of the first charging module (110);
a first end of the first resistor (R1) is connected with a charging current programming pin (114) of the first charging chip (U1), and a second end of the first resistor (R1) is grounded;
a first end of the second resistor (R2) is connected with a power input pin (111) of the first charging chip (U1), and a second end of the second resistor (R2) is connected with a charging detection output pin (113) of the first charging chip (U1);
the first end of the first capacitor (C1) is connected with the power input pin (111) of the first charging chip (U1), and the second end of the first capacitor (C1) is grounded.
4. The charging circuit (100) of claim 3, wherein the first charging chip (U1) comprises an enable pin (123), and the enable pin (115) of the first charging chip (U1) is connected to the power input pin (111) of the first charging chip (U1).
5. The charging circuit (100) of claim 1 or 2, wherein the second charging module (120) comprises a second charging chip (U2), a third resistor (R3) and a second capacitor (C2);
the second charging chip (U2) comprises 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), the charging output pin (122) of the second charging chip (U2) is a charging output end of the second charging module (120), and the enable pin (123) of the second charging chip (U2) is an enable end of the second charging module (120);
a first end of the third resistor (R3) is connected with a charging current programming pin (124) of the second charging chip (U2), and a second end of the third resistor (R3) is grounded;
the first end of the second capacitor (C2) is connected with the power input pin (121) of the second charging chip (U2), and the second end of the second capacitor (C2) is grounded.
6. The charging circuit (100) according to claim 1 or 2, wherein the monitoring module (130) comprises a fourth resistor (R4) and a fifth resistor (R5), a first terminal of the fourth resistor (R4) is a monitoring terminal of the monitoring module (130), a second terminal of the fourth resistor (R4) is an output terminal of the monitoring module (130), a first terminal of the fifth resistor (R5) is connected to a second terminal of the fourth resistor (R4), and a second terminal of the fifth resistor (R5) is connected to ground.
7. The charging circuit (100) according to claim 1 or 2, wherein the charging circuit (100) comprises a third capacitor (C3) and a fourth capacitor (C4), a first terminal of the third capacitor (C3) is connected to the external power source (200), a second terminal of the third capacitor (C3) is connected to ground, a first terminal of the fourth capacitor (C4) is connected to the battery (300), and a second terminal of the fourth capacitor (C4) is connected to ground.
8. An electronic cigarette, characterized in that it comprises a charging circuit (100) according to any one of claims 1 to 7.
9. The electronic cigarette according to claim 8, wherein the electronic cigarette comprises a main control circuit (400) and an atomization circuit (500), an atomization control output end of the main control circuit (400) is connected with an atomization control input end of the atomization circuit (500), and the main control circuit (400) is responsible for controlling the working state of the atomization circuit (500); the charging circuit (100) is connected with the main control circuit (400), and the charging circuit (100) supplies power to the main control circuit (400).
10. The electronic cigarette of claim 9, wherein the electronic cigarette comprises a battery (300), the battery (300) is respectively connected to the charging circuit (100), the main control circuit (400) and the atomization circuit (500), the charging circuit (100) performs charging current management on the battery (300), and the battery (300) provides electric energy for the main control circuit (400) and the atomization circuit (500).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810220425.1A CN108390432B (en) | 2018-03-16 | 2018-03-16 | Charging circuit and electronic cigarette |
| PCT/CN2019/073129 WO2019174415A1 (en) | 2018-03-16 | 2019-01-25 | Charging circuit and electronic cigarette |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810220425.1A CN108390432B (en) | 2018-03-16 | 2018-03-16 | Charging circuit and electronic cigarette |
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| Publication Number | Publication Date |
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| CN108390432A CN108390432A (en) | 2018-08-10 |
| CN108390432B true CN108390432B (en) | 2021-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810220425.1A Active CN108390432B (en) | 2018-03-16 | 2018-03-16 | Charging circuit and electronic cigarette |
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| Country | Link |
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| CN (1) | CN108390432B (en) |
| WO (1) | WO2019174415A1 (en) |
Families Citing this family (4)
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|---|---|---|---|---|
| CN108390432B (en) * | 2018-03-16 | 2021-03-26 | 常州市派腾电子技术服务有限公司 | Charging circuit and electronic cigarette |
| CN109245248A (en) * | 2018-11-27 | 2019-01-18 | 湖南衡盈电子科技有限公司 | charging control circuit |
| CN109361253A (en) * | 2018-12-20 | 2019-02-19 | 成都烜奕物联科技有限公司 | Electronic cigarette charging storehouse, charging unit and method |
| CN115549230B (en) * | 2022-01-25 | 2023-06-23 | 荣耀终端有限公司 | Charging control circuit and terminal |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201303252Y (en) * | 2008-06-06 | 2009-09-02 | 北京集能伟业电子科技有限公司 | Intelligent battery management solar charge controller |
| CN106130093A (en) * | 2016-06-28 | 2016-11-16 | 努比亚技术有限公司 | A kind of battery charge controller and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104767262B (en) * | 2015-03-30 | 2018-02-16 | 深圳市倍斯特科技股份有限公司 | A kind of portable power source and its charging circuit |
| CN205214209U (en) * | 2015-10-21 | 2016-05-11 | 惠州市吉瑞科技有限公司深圳分公司 | Electronic cigarette |
| CN206180632U (en) * | 2016-10-28 | 2017-05-17 | 深圳市爱克斯达电子有限公司 | Battery charging device |
| CN206877480U (en) * | 2017-06-29 | 2018-01-12 | 深圳市安奇啦科技有限公司 | A kind of body rectifier |
| CN107404107B (en) * | 2017-08-15 | 2020-02-14 | 惠州市新泓威科技有限公司 | Dry burning prevention device of electronic cigarette and control method thereof |
| CN108390432B (en) * | 2018-03-16 | 2021-03-26 | 常州市派腾电子技术服务有限公司 | Charging circuit and electronic cigarette |
-
2018
- 2018-03-16 CN CN201810220425.1A patent/CN108390432B/en active Active
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- 2019-01-25 WO PCT/CN2019/073129 patent/WO2019174415A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201303252Y (en) * | 2008-06-06 | 2009-09-02 | 北京集能伟业电子科技有限公司 | Intelligent battery management solar charge controller |
| CN106130093A (en) * | 2016-06-28 | 2016-11-16 | 努比亚技术有限公司 | A kind of battery charge controller and method |
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| Publication number | Publication date |
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| CN108390432A (en) | 2018-08-10 |
| WO2019174415A1 (en) | 2019-09-19 |
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