CN207765993U - A kind of charging unit - Google Patents
A kind of charging unit Download PDFInfo
- Publication number
- CN207765993U CN207765993U CN201721923267.3U CN201721923267U CN207765993U CN 207765993 U CN207765993 U CN 207765993U CN 201721923267 U CN201721923267 U CN 201721923267U CN 207765993 U CN207765993 U CN 207765993U
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- Prior art keywords
- battery
- voltage
- electric current
- charging unit
- charging
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- 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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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The utility model is related to a kind of charging units.It includes：Battery, charging interface, buck chip and microcontroller；The battery provides working power for providing initial charge power supply, and to the buck chip, the microcontroller；The charging interface is electrically connected with the battery to be charged；The microcontroller, voltage or electric current for obtaining the battery to be charged from the charging interface, and according to the voltage of the battery to be charged or the voltage or electric current of the battery of electric current and the charging unit, the duty ratio of pulse-width signal is obtained, and exports the pulse-width signal of the duty ratio to the buck chip；The buck chip, for exporting charge power supply after the voltage or electric current of the battery are adjusted according to the pulse-width signal to the charging interface.The charging unit forms the closed-loop control of pulsewidth modulation, can improve charge efficiency, reduction circuit cost according to the charging voltage or electric current that real-time, the adaptive adjustment of the voltage or electric current of battery to be charged exports.
Description
【Technical field】
The utility model is related to electronic technology field more particularly to a kind of charging units.
【Background technology】
Digital electric equipment (such as electronic cigarette) is all to use rechargeable battery at present.But due to the internal battery of charging unit
Voltage and or current between the internal battery of charging equipment mismatches, and generally requires to carry out by voltage regulator circuit
It could charge after adjustment.
Existing charging unit (such as mobile power, charger) is in order to meet the charge requirement of distinct electronic apparatuses, usually
It will treat charged electronic equipment using the charging circuit being depressured again that first boosts and charge.That is, first by charging unit in-built electrical
The voltage in pond is raised to a particular value, such as 5V, which is above current each class of electronic devices internal battery voltage, then exists
In charging process, according to the voltage of the internal battery of electronic equipment to be charged, which is reduced to matched charging
Voltage, such as 4.2V, charge.
In entire charging circuit, the cell voltage of charging unit is boosted to 5V and exported by boost charge circuit, the link
Electric energy conversion efficiency is average 85% or so；Then, then by being depressured charging circuit by voltage drop down to matched voltage, the ring
Average power transformation efficiency is saved 70% or so.Finally, the average efficiency of charging unit is only 59.5% or so, and energy loss is tight
Weight.
【Utility model content】
The technical problem to be solved by the present invention is to provide a kind of mobile powers that can reduce electric energy loss.
In order to solve the above technical problems, the utility model provides following technical scheme：
The utility model provides a kind of charging unit, and for charging to battery to be charged, which includes：Electricity
Pond and charging interface, buck chip and microcontroller；The battery gives the liter for providing initial charge power supply
It is depressured chip, the microcontroller provides working power；The charging interface is electrically connected with the battery to be charged；The microcontroller is used
In the voltage or electric current that obtain the battery to be charged from the charging interface, and according to the voltage of the battery to be charged or electric current and
The voltage or electric current of the battery of the charging unit, obtain the duty ratio of pulse-width signal, and export the pulsewidth tune of the duty ratio
Signal processed is to the buck chip；The buck chip is used for according to the pulse-width signal to the voltage or electric current of the battery
Charge power supply is exported after being adjusted to the charging interface.
The beneficial effects of the utility model are, are believed according to the pulsewidth modulation that microcontroller exports using buck chip
Number, after voltage or electric current to battery are adjusted, output is charged to battery to be charged.The charging unit forms pulsewidth tune
The closed-loop control of system, can be according to the variation of the voltage or electric current of battery to be charged, the charging for adjusting output in real time, adaptive
Voltage or electric current.The relatively existing circuit structure being depressured again that first boosts of circuit structure is more simple, circuit loss smaller.By
This, can greatly improve the charge efficiency of charging unit, while can also reduce circuit cost.
【Description of the drawings】
A kind of square frame principle schematic diagram of the specific implementation mode one of charging unit of Fig. 1 the utility model.
A kind of circuit theory schematic diagram of the specific implementation mode two of charging unit of Fig. 2 the utility model.
【Specific implementation mode】
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only explaining this
Utility model is not used to limit the utility model.But the utility model can be realized in many different forms, and
It is not limited to embodiment described herein.Make in the disclosure to the utility model on the contrary, purpose of providing these embodiments is
The understanding of appearance is more thorough and comprehensive.
Unless otherwise defined, all technical and scientific terms practical this paper are led with the technology for belonging to the utility model
The normally understood meaning of technical staff in domain is identical.Terminology used in the description of the utility model herein only be
The purpose of description specific embodiment, it is not intended that limitation the utility model.Term as used herein "and/or" includes one
Any and all combinations of a or multiple relevant Listed Items.Term as used herein " connection/electrical connection " includes
One circuit unit or electronic component are directly directly electrically connected with another circuit unit or electronic component, but also include passing through
Other circuit units or electronic component are electrically connected indirectly with another circuit unit or electronic component.
Refer to Fig. 1, a kind of square frame principle schematic diagram of the specific implementation mode one of charging unit of the utility model.This is filled
Electric installation 100 can be mobile power or charger etc., the electronic device that electronic equipment to be charged can be given to charge.
The charging unit 100 includes：Battery 10, buck chip 20, microcontroller 30 and charging interface 40.
The battery 10 provides work for providing initial charge power supply, and to the buck chip 20, the microcontroller 30
Make power supply.The battery 10 includes but not limited to lithium ion battery.
The charging interface 40 with the battery to be charged 200 of the electronic equipment for being electrically connected.The charging unit 100 passes through this
Charging interface 40 charges to the battery 200 to be charged.The charging interface 40 include but not limited to be USB interface, Type-A
Any one in the interfaces such as interface, Type-B interfaces, Type-C.
The microcontroller 30 is used to obtain the voltage or electric current of battery 200 to be charged from the charging interface 40, and according to this
The voltage or electric current of the voltage or electric current of battery 200 to be charged and the battery 10 of the charging unit 100 obtain pulsewidth modulation letter
Number duty ratio, and export the pulse-width signal to the buck chip 20.
The buck chip 20 exports after the voltage or electric current of the battery 10 are adjusted according to the pulse-width signal
Charge power supply is matched to the charging interface 40, is charged to the battery 200 to be charged.
Specifically, the voltage of 30 battery 200 more to be charged of microcontroller or the battery of electric current and the charging unit 100
10 voltage or electric current, when the voltage of the battery 10 or electric current are less than the voltage or electric current of the battery 200 to be charged, the pulsewidth
Modulated signal controls the buck chip 20 and is operated in boost mode；When the voltage or electric current of the battery 10 are more than the electricity to be charged
When the voltage or electric current in pond 200, which controls the buck chip 20 and is operated in decompression mode.Specifically, should
Microcontroller 30 reduces the duty ratio of the pulse-width signal, and boost mode is operated in control the buck chip 20；This is micro-
Controller 30 increases the duty ratio of the pulse-width signal, and decompression mode is operated in control the buck chip 20.
In specific embodiment of the present utility model one, the pulsewidth that is exported according to microcontroller 30 using buck chip 20
Modulated signal, after being adjusted to the voltage of battery 10, output is charged to battery 200 to be charged.In the charging process,
Microcontroller 30 obtains the voltage and or current feedback of the battery to be charged, and according to the voltage and/or electricity of the battery to be charged
Magnitude relationship between stream feedback and the cell voltage and/or electric current of the charging unit, determines the pulse-width signal of output
Duty ratio, the change in duty cycle of the pulse-width signal then further influence the buck chip 20 output charging voltage or
The closed-loop control of pulsewidth modulation is consequently formed in electric current.The circuit can be real according to the variation of the voltage or electric current of battery to be charged
When, the charging voltage or electric current of adaptive adjustment output.The relatively existing circuit knot being depressured again that first boosts of circuit structure
Structure is more simple, circuit loss smaller.Therefore, the charge efficiency of charging unit can be greatly improved, while can also be reduced
Circuit cost.
Refer to Fig. 2, a kind of circuit theory schematic diagram of the specific implementation mode two of charging unit of the utility model.
In specific implementation mode two, the microcontroller 30 of the charging unit 100 is obtained respectively by the charging interface 40
The voltage or current value of battery 200 positive and negative anodes A, B to be charged.
The microcontroller 30 is according to the voltage of battery 200 positive and negative anodes A, the B to be charged or the electricity of current value and the battery 10
Magnitude relationship between pressure or current value, obtains the duty ratio of width-modulation pulse, and exports the pulsewidth modulation letter of the duty ratio
Number to the buck chip 20 feedback end FB.
Optimization, the pulse-width signal of the microcontroller 30 passes through the filter circuit of resistance R13 and capacitance C11 compositions
Afterwards, the feedback end FB of the buck chip 20 is exported.
Optimization, the pulse-width signal of the microcontroller 30 exports the buck core also after high speed diode D1
The feedback end FB of piece 20.High speed diode D1 is used to carry out one-way conduction isolation to the pulse-width signal, and model can be used
1N4148 cache switching diodes.
The pulse-width signal that the buck chip 30 is received according to feedback end FB adjusts output end vo ut outputs
Voltage or electric current treat rechargeable battery 200 and charge.The built-in pulse-width modulation circuit in the buck chip 30 inside, the arteries and veins
Wide modulation circuit can export different voltage or electric current according to the different duty ratio of the pulse-width signal.
Optimization, the output end vo ut output charge power supplies of the buck chip 20 are by resistance R11 and resistance R14 compositions
Bleeder circuit after, the charging interface 40 is given in output, for giving the battery 200 to be charged to charge.Specifically, the bleeder circuit is
Output end vo ut is exported charge power supply to divide the voltage output for being 4.2V to the battery 200 to be charged.
Above-mentioned specific implementation mode illustrates but is not intended to limit the utility model, and those skilled in the art can be in claim
In the range of design it is multiple replace example.Those skilled in the art should be appreciated that being violated as appended no
Within the scope of the utility model as defined in the claims, specific implementation can be made it is appropriate adjustment, modification etc..
Therefore, all according to the spirit and principles of the utility model, the arbitrary modifications and variations done are determined in the appended claims
Within the scope of the utility model of justice.
Claims (10)
1. a kind of charging unit, for charging to battery to be charged, which includes：Battery and charging interface,
It is characterized in that, the charging unit further includes：Buck chip, microcontroller；
The battery provides working power for providing initial charge power supply, and to the buck chip, the microcontroller；
The charging interface is electrically connected with the battery to be charged；
The microcontroller, voltage or electric current for obtaining the battery to be charged from the charging interface, and according to the electricity to be charged
The voltage or electric current of the voltage or electric current in pond and the battery of the charging unit, obtain the duty ratio of pulse-width signal, and defeated
Go out the pulse-width signal of the duty ratio to the buck chip；
The buck chip, for exporting charging after the voltage or electric current of the battery are adjusted according to the pulse-width signal
Power supply is to the charging interface.
2. charging unit as described in claim 1, which is characterized in that the charging interface includes：USB interface, Type-A interfaces,
Any one in Type-B interfaces, Type-C.
3. charging unit as described in claim 1, which is characterized in that the microcontroller, specifically for comparing the electricity to be charged
The voltage or electric current of the voltage or electric current in pond and the battery of the charging unit, when the voltage or electric current of the battery of the charging unit are small
When the voltage or electric current of the battery to be charged, which controls the buck chip operation in boost mode；When
When the voltage or electric current of the battery of the charging unit are more than the voltage or electric current of the battery to be charged, pulse-width signal control
The buck chip operation is in decompression mode.
4. charging unit as claimed in claim 3, which is characterized in that the microcontroller is additionally operable to reduce pulsewidth modulation letter
Number duty ratio, to control the buck chip operation in boost mode；The microcontroller increases accounting for for the pulse-width signal
Empty ratio, to control the buck chip operation in decompression mode.
5. charging unit as described in claim 1, which is characterized in that the microcontroller is electrically connected to the charging interface, and from
The charging interface obtains the voltage or electric current of battery plus-negative plate to be charged respectively.
6. charging unit as claimed in claim 5, which is characterized in that the microcontroller is used for according to the battery to be charged just
Magnitude relationship between the voltage or current value of cathode and the voltage or electric current of the battery, obtains the duty of width-modulation pulse
Than, and the pulse-width signal of the duty ratio is exported to the feedback end of the buck chip.
7. charging unit as described in claim 1, which is characterized in that the filtered electricity of pulse-width signal of the microcontroller
Lu Hou exports the feedback end of the buck chip.
8. charging unit as described in claim 1, which is characterized in that the pulse-width signal of the microcontroller also passes through high speed
After diode carries out one-way conduction isolation, export to the feedback end of the buck chip.
9. charging unit as described in claim 1, which is characterized in that the buck chip is according to the feedback of the buck chip
The pulse-width signal received is terminated, the voltage or electric current of output end output are adjusted.
10. charging unit as described in claim 1, which is characterized in that the output end of the buck chip passes through bleeder circuit
The charge power supply is exported after partial pressure to the charging interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721923267.3U CN207765993U (en) | 2017-12-29 | 2017-12-29 | A kind of charging unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721923267.3U CN207765993U (en) | 2017-12-29 | 2017-12-29 | A kind of charging unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207765993U true CN207765993U (en) | 2018-08-24 |
Family
ID=63182860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721923267.3U Active CN207765993U (en) | 2017-12-29 | 2017-12-29 | A kind of charging unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207765993U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022141551A1 (en) * | 2020-12-30 | 2022-07-07 | Tcl华星光电技术有限公司 | Voltage stabilizing circuit, voltage stabilizing method, charging circuit, and electronic device |
-
2017
- 2017-12-29 CN CN201721923267.3U patent/CN207765993U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022141551A1 (en) * | 2020-12-30 | 2022-07-07 | Tcl华星光电技术有限公司 | Voltage stabilizing circuit, voltage stabilizing method, charging circuit, and electronic device |
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Address after: 410000 Room 701, Building 7, First Phase of Changsha Zhongdian Software Park Co., Ltd., No. 39 Jianshan Road, Changsha High-tech Development Zone, Changsha, Hunan Province Patentee after: ANKER INNOVATIONS TECHNOLOGY Co.,Ltd. Address before: 410000 Room 701, 7th Floor, Phase I, Changsha Zhongdian Software Park Co., Ltd., No. 39 Jianshan Road, Changsha High-tech Development Zone, Hunan Province Patentee before: HUNAN OCEANWING E-COMMERCE Co.,Ltd. |