CN105471049B - A kind of charging circuit - Google Patents
A kind of charging circuit Download PDFInfo
- Publication number
- CN105471049B CN105471049B CN201610015443.7A CN201610015443A CN105471049B CN 105471049 B CN105471049 B CN 105471049B CN 201610015443 A CN201610015443 A CN 201610015443A CN 105471049 B CN105471049 B CN 105471049B
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- Prior art keywords
- module
- resistance
- voltage
- semiconductor
- oxide
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Classifications
-
- 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
-
- 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
Abstract
The invention belongs to technical field of electronic equipment more particularly to a kind of charging circuits.In embodiments of the present invention, the voltage of power supply, rechargeable battery, voltage transformation module is detected respectively by the way that control module is arranged, the energy of power supply is utilized to greatest extent, control module control voltage transformation module directly charges to rechargeable battery, charge efficiency is improved, and the loss of electric energy is also smaller in charging process；In addition, voltage transformation module using boost module and voltage reduction module in parallel, may be implemented, when charging voltage is higher or lower than the ceiling voltage of rechargeable battery, to charge to rechargeable battery.
Description
Technical field
The invention belongs to technical field of electronic equipment more particularly to a kind of charging circuits.
Background technology
There are two types of existing charging circuit is general：Voltage-dropping type charging circuit and booster type charging circuit, when charging voltage height
When the ceiling voltage of rechargeable battery, using voltage-dropping type charging circuit, when charging voltage is less than the ceiling voltage of rechargeable battery,
Using booster type charging circuit.
In order to ensure output current nonoverload, the electric current of charging circuit setting is generally smaller, so charging is slow, this
Sample charge efficiency is relatively low.In addition, being carried out to battery since existing charging circuit can not maximally utilise power supply energy
Charging, thus in charging process electric energy loss it is also relatively high.
Invention content
The embodiment of the present invention is designed to provide a kind of charging circuit, it is intended to solve existing charging circuit and there is charging
The problem that efficiency is low, electric energy loss is high.
The embodiment of the present invention is achieved in that a kind of charging circuit, is connected between power supply and rechargeable battery, described to fill
Circuit includes：
The voltage transformation module being connected between power supply and rechargeable battery；
The voltage of the power supply, rechargeable battery, voltage transformation module is detected respectively, to the voltage transformation module
The control module controlled controls the voltage transformation module directly to rechargeable battery for the energy using the power supply
It charges；
The voltage transformation module includes the boost module being connected between the power supply and rechargeable battery；Or
The voltage transformation module includes the boost module and voltage reduction module being connected in parallel between the power supply and rechargeable battery.
In embodiments of the present invention, by the way that control module is arranged respectively to the electricity of power supply, rechargeable battery, voltage transformation module
Pressure is detected, to greatest extent utilize power supply energy, control module control voltage transformation module directly to rechargeable battery into
Row charging, improves charge efficiency, and the loss of electric energy is also smaller in charging process.
Description of the drawings
Fig. 1 is the function structure chart for the charging circuit that first embodiment of the invention provides；
Fig. 2 is the function structure chart for the charging circuit that second embodiment of the invention provides；
Fig. 3 is the first circuit structure diagram of charging circuit provided in an embodiment of the present invention；
Fig. 4 is second of circuit structure diagram of charging circuit provided in an embodiment of the present invention；
Fig. 5 is the first circuit structure diagram of the first current limliting module provided in an embodiment of the present invention；
Fig. 6 is second of circuit structure diagram of the first current limliting module provided in an embodiment of the present invention；
Fig. 7 is the first circuit structure diagram of the second current limliting module provided in an embodiment of the present invention；
Fig. 8 is second of circuit structure diagram of the second current limliting module provided in an embodiment of the present invention；
Fig. 9 is the first circuit structure diagram of voltage sample module provided in an embodiment of the present invention；
Figure 10 is second of circuit structure diagram of voltage sample module provided in an embodiment of the present invention；
Figure 11 is the third circuit structure diagram of voltage sample module provided in an embodiment of the present invention.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Fig. 1 shows that the modular structure for the charging circuit that first embodiment of the invention provides only is shown for convenience of description
With relevant part of the embodiment of the present invention.
A kind of charging circuit, is connected between power supply and rechargeable battery, and the charging circuit includes：
The voltage transformation module 1 being connected between power supply and rechargeable battery；
The voltage of the power supply, rechargeable battery, voltage transformation module 1 is detected respectively, to the voltage modulus of conversion
The control module 2 that block 1 is controlled controls the voltage transformation module 1 directly to charging for the energy using the power supply
Battery charges；
The voltage transformation module 1 includes the boost module 11 being connected between the power supply and rechargeable battery；Or
The voltage transformation module 1 includes the boost module 11 being connected in parallel between the power supply and rechargeable battery and decompression mould
Block 12.
Voltage transformation module 1 may be implemented to be higher than when charging voltage using boost module 11 and voltage reduction module 12 in parallel
Or less than rechargeable battery ceiling voltage when, can charge to rechargeable battery.
Fig. 3 shows that the first circuit structure of charging circuit provided in an embodiment of the present invention only shows for convenience of description
Go out and the relevant part of the embodiment of the present invention.
As an embodiment of the present invention, the charging circuit further includes anti-reverse discharge diode D1, the boost module
11 include inductance L1, metal-oxide-semiconductor Q3, diode D3, and the voltage reduction module 12 includes metal-oxide-semiconductor Q1, inductance L2, diode D2；
The inductance L1 and diode D3 are connected between the power supply and rechargeable battery, and the drain electrode of the metal-oxide-semiconductor Q3 connects
It is grounded in the source electrode of the public connecting end of the inductance L1 and diode D3, the metal-oxide-semiconductor Q3, the grid of the metal-oxide-semiconductor Q3 connects
The control module 2；
The anti-reverse discharge diode D1, metal-oxide-semiconductor Q1, inductance L2 are connected between the power supply and rechargeable battery, institute
The grid for stating metal-oxide-semiconductor Q1 connects the control module 2, and the cathode of the diode D2 connects the public of the metal-oxide-semiconductor Q1 and inductance L2
Connecting pin, the plus earth of the diode D2.
The purpose that anti-reverse discharge diode D1 is arranged is that it is reversed rechargeable battery occur in order to prevent during charging
The phenomenon that electric discharge, generates.
Fig. 4 shows that second of circuit structure of charging circuit provided in an embodiment of the present invention only shows for convenience of description
Go out and the relevant part of the embodiment of the present invention.
As an embodiment of the present invention, the charging circuit further includes anti-reverse discharge diode D1, the boost module
11 be synchronous boost, and the voltage reduction module 12 is synchronous buck, and the boost module 11 includes inductance L1, metal-oxide-semiconductor Q3, metal-oxide-semiconductor
Q4, the voltage reduction module 12 include metal-oxide-semiconductor Q1, inductance L2, metal-oxide-semiconductor Q2；
The inductance L1 and metal-oxide-semiconductor Q4 are connected between the power supply and rechargeable battery, and the grid of the metal-oxide-semiconductor Q4 meets institute
Control module 2 is stated, the drain electrode of the metal-oxide-semiconductor Q3 connects the public connecting end of the inductance L1 and metal-oxide-semiconductor Q4, the metal-oxide-semiconductor Q3's
Source electrode is grounded, and the grid of the metal-oxide-semiconductor Q3 connects the control module 2；
The anti-reverse discharge diode D1, metal-oxide-semiconductor Q1, inductance L2 are connected between the power supply and rechargeable battery, institute
The grid for stating metal-oxide-semiconductor Q1 connects the control module 2, and the drain electrode of the metal-oxide-semiconductor Q2 meets the public company of the metal-oxide-semiconductor Q1 and inductance L2
End, the source electrode ground connection of the metal-oxide-semiconductor Q2 are connect, the grid of the metal-oxide-semiconductor Q2 connects the control module 2.
Fig. 2 shows the modular structures of the charging circuit of second embodiment of the invention offer only to show for convenience of description
With relevant part of the embodiment of the present invention.
As an embodiment of the present invention, the charging circuit further includes：
For being connected between the voltage transformation module 1 and rechargeable battery, and being connect with the control module 2
One current limliting module 3.
As an embodiment of the present invention, the charging circuit further includes：
The second limit for being connected between the power supply and voltage transformation module 1, and being connect with the control module 2
Flow module 4.
As an embodiment of the present invention, the charging circuit further includes voltage sample module 5, the voltage sample module 5
Input terminal connect the power supply and/or voltage transformation module 1 and rechargeable battery, the output of the voltage sample module 5 respectively
It holds while connecing the control module 2.
Fig. 5 shows the first circuit structure of the first current limliting module provided in an embodiment of the present invention, for convenience of description,
It illustrates only and the relevant part of the embodiment of the present invention.
As an embodiment of the present invention, the first current limliting module 3 includes metal-oxide-semiconductor Q5, and the drain electrode of the metal-oxide-semiconductor Q5 meets institute
Voltage transformation module 1 is stated, the source electrode of the metal-oxide-semiconductor Q5 connects the rechargeable battery, and the grid of the metal-oxide-semiconductor Q5 connects the control mould
Block 2.
Fig. 6 shows second of circuit structure of the first current limliting module provided in an embodiment of the present invention, for convenience of description,
It illustrates only and the relevant part of the embodiment of the present invention.
As an embodiment of the present invention, the first current limliting module 3 includes resistance R2 and comparator A2, the resistance R2 companies
It is connected between the voltage transformation module 1 and rechargeable battery, in-phase input end and the inverting input difference of the comparator A2
The both ends of the resistance R2 are connect, the output of the comparator A2 terminates the control module 2.
Fig. 7 shows the first circuit structure of the second current limliting module provided in an embodiment of the present invention, for convenience of description,
It illustrates only and the relevant part of the embodiment of the present invention.
As an embodiment of the present invention, the second current limliting module 4 includes resistance R1 and comparator A1, the resistance R1 companies
It is connected between the power supply and voltage transformation module 1, the in-phase input end and inverting input of the comparator A1 meet institute respectively
The both ends of resistance R1 are stated, the output of the comparator A1 terminates the control module 2.
Fig. 8 shows second of circuit structure of the second current limliting module provided in an embodiment of the present invention, for convenience of description,
It illustrates only and the relevant part of the embodiment of the present invention.
As an embodiment of the present invention, the second current limliting module 4 includes resistance R1, resistance R5, resistance R6 and comparator
A1, the resistance R1 are connected between the power supply and voltage transformation module 1, and one end of the R1 connects the comparator A1's
In-phase input end simultaneously connects the power supply, and the other end of the R1 connects the voltage transformation module 1 and passes through the resistance R5
The inverting input of the comparator A1 is connected, the resistance R6 is connected to the inverting input and output end of the comparator A1
Between, the output of the comparator A1 terminates the control module 2.
Fig. 9 shows the first circuit structure of voltage sample module provided in an embodiment of the present invention, for convenience of description,
It illustrates only and the relevant part of the embodiment of the present invention.
As an embodiment of the present invention, one end that the voltage sample module 5 includes resistance R3, the resistance R3 is voltage
The input terminal of sampling module 5, the other end of the resistance R3 are the output end of voltage sample module 5.
Figure 10 shows second of circuit structure of voltage sample module provided in an embodiment of the present invention, for the ease of saying
It is bright, it illustrates only and the relevant part of the embodiment of the present invention.
As an embodiment of the present invention, the voltage sample module 5 includes resistance R3 and resistance R4, and the one of the resistance R3
End is the input terminal of voltage sample module 5, the other end of the resistance R3 be the output end of voltage sample module 5 and with resistance R4
One end connection, resistance R4 the other end ground connection.
Figure 11 shows the third circuit structure of voltage sample module provided in an embodiment of the present invention, for the ease of saying
It is bright, it illustrates only and the relevant part of the embodiment of the present invention.
As an embodiment of the present invention, the voltage sample module 5 includes resistance R3, resistance R4 and metal-oxide-semiconductor Q6, the electricity
The one end for hindering R3 is the input terminal of voltage sample module 5, the other end of the resistance R3 be the output end of voltage sample module 5 simultaneously
It is connect with one end of resistance R4, the other end of the resistance R4 connects the drain electrode of the metal-oxide-semiconductor Q6, the grid of the metal-oxide-semiconductor Q6
Connect the control module 2, the source electrode ground connection of the metal-oxide-semiconductor Q6.
Charging circuit further includes filter capacitor C1 and filter capacitor C2, and one end of filter capacitor C1 is connected to voltage modulus of conversion
Between block 1 and the first current limliting module 3, the other end of filter capacitor C1 is grounded, and one end of filter capacitor C2 is connected to the first current limliting
Between module 3 and rechargeable battery, the other end of filter capacitor C2 is grounded.
In embodiments of the present invention, by the way that control module is arranged respectively to the electricity of power supply, rechargeable battery, voltage transformation module
Pressure is detected, to greatest extent utilize power supply energy, control module control voltage transformation module directly to rechargeable battery into
Row charging, improves charge efficiency, and the loss of electric energy is also smaller in charging process.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.
Claims (8)
1. a kind of charging circuit, is connected between power supply and rechargeable battery, which is characterized in that the charging circuit includes：
The voltage transformation module being connected between power supply and rechargeable battery；
The voltage of the power supply, rechargeable battery, voltage transformation module is detected respectively, the voltage transformation module is carried out
The control module of control controls the voltage transformation module and is directly carried out to rechargeable battery for the energy using the power supply
Charging；
The first current limliting for being connected between the voltage transformation module and rechargeable battery, and being connect with the control module
Module；
The the second current limliting mould for being connected between the power supply and voltage transformation module, and being connect with the control module
Block；
Voltage sample module, the input terminal of the voltage sample module connect respectively the power supply and/or voltage transformation module and
The output end of rechargeable battery, the voltage sample module connects the control module simultaneously；
The voltage transformation module includes the boost module being connected between the power supply and rechargeable battery；Or the voltage turns
It includes the boost module and voltage reduction module being connected in parallel between the power supply and rechargeable battery to change the mold block；
The charging circuit further includes anti-reverse discharge diode D1, and the boost module is synchronous boost, the voltage reduction module
For synchronous buck, the boost module includes inductance L1, metal-oxide-semiconductor Q3, metal-oxide-semiconductor Q4, and the voltage reduction module includes metal-oxide-semiconductor Q1, electricity
Feel L2, metal-oxide-semiconductor Q2；
The inductance L1 and metal-oxide-semiconductor Q4 are connected between the power supply and rechargeable battery, and the grid of the metal-oxide-semiconductor Q4 connects the control
Molding block, the drain electrode of the metal-oxide-semiconductor Q3 connect the public connecting end of the inductance L1 and metal-oxide-semiconductor Q4, and the source electrode of the metal-oxide-semiconductor Q3 connects
The grid on ground, the metal-oxide-semiconductor Q3 connects the control module；
The anti-reverse discharge diode D1, metal-oxide-semiconductor Q1, inductance L2 are connected between the power supply and rechargeable battery, the MOS
The grid of pipe Q1 connects the control module, and the drain electrode of the metal-oxide-semiconductor Q2 connects the public connecting end of the metal-oxide-semiconductor Q1 and inductance L2,
The source electrode of the metal-oxide-semiconductor Q2 is grounded, and the grid of the metal-oxide-semiconductor Q2 connects the control module.
2. charging circuit as described in claim 1, which is characterized in that the first current limliting module includes metal-oxide-semiconductor Q5, described
The drain electrode of metal-oxide-semiconductor Q5 connects the voltage transformation module, and the source electrode of the metal-oxide-semiconductor Q5 connects the rechargeable battery, the metal-oxide-semiconductor Q5's
Grid connects the control module.
3. charging circuit as described in claim 1, which is characterized in that the first current limliting module includes resistance R2 and comparator
A2, the resistance R2 are connected between the voltage transformation module and rechargeable battery, the in-phase input end of the comparator A2 and
Inverting input connects the both ends of the resistance R2 respectively, and the output of the comparator A2 terminates the control module.
4. charging circuit as described in claim 1, which is characterized in that the voltage sample module includes resistance R3, the electricity
The one end for hindering R3 is the input terminal of voltage sample module, and the other end of the resistance R3 is the output end of voltage sample module, institute
The input terminal for stating voltage sample module connects the power supply and/or voltage transformation module and rechargeable battery respectively, and the voltage is adopted
The output end of egf block connects the control module simultaneously.
5. charging circuit as described in claim 1, which is characterized in that the voltage sample module includes resistance R3 and resistance
One end of R4, the resistance R3 are the input terminal of voltage sample module, and the other end of the resistance R3 is voltage sample module
Output end is simultaneously connect with one end of resistance R4, and the other end ground connection of resistance R4, the input terminal of the voltage sample module connects respectively
The output end of the power supply and/or voltage transformation module and rechargeable battery, the voltage sample module connects the control simultaneously
Module.
6. charging circuit as described in claim 1, which is characterized in that the voltage sample module includes resistance R3, resistance R4
With metal-oxide-semiconductor Q6, one end of the resistance R3 is the input terminal of voltage sample module, and the other end of the resistance R3 is voltage sample
The output end of module is simultaneously connect with one end of resistance R4, and the other end of the resistance R4 connects the drain electrode of the metal-oxide-semiconductor Q6, described
The grid of metal-oxide-semiconductor Q6 connects the control module, the source electrode ground connection of the metal-oxide-semiconductor Q6, the input terminal of the voltage sample module
The power supply and/or voltage transformation module and rechargeable battery are connect respectively, and the output end of the voltage sample module meets institute simultaneously
State control module.
7. charging circuit as described in claim 1, which is characterized in that the second current limliting module includes resistance R1 and comparator
A1, the resistance R1 are connected between the power supply and voltage transformation module, the in-phase input end and reverse phase of the comparator A1
Input terminal connects the both ends of the resistance R1 respectively, and the output of the comparator A1 terminates the control module.
8. charging circuit as described in claim 1, which is characterized in that the second current limliting module include resistance R1, resistance R5,
Resistance R6 and comparator A1, the resistance R1 are connected between the power supply and voltage transformation module, one end connection of the R1
The in-phase input end of the comparator A1 simultaneously connects the power supply, and the other end of the R1 connects the voltage transformation module and leads to
The inverting input that the resistance R5 connects the comparator A1 is crossed, the reverse phase that the resistance R6 is connected to the comparator A1 is defeated
Enter between end and output end, the output of the comparator A1 terminates the control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610015443.7A CN105471049B (en) | 2016-01-08 | 2016-01-08 | A kind of charging circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610015443.7A CN105471049B (en) | 2016-01-08 | 2016-01-08 | A kind of charging circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105471049A CN105471049A (en) | 2016-04-06 |
| CN105471049B true CN105471049B (en) | 2018-07-20 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610015443.7A Expired - Fee Related CN105471049B (en) | 2016-01-08 | 2016-01-08 | A kind of charging circuit |
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| CN (1) | CN105471049B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105676934B (en) * | 2016-04-13 | 2017-12-22 | 深圳市赛音电子有限公司 | A kind of power circuit |
| CN106410897B (en) * | 2016-10-12 | 2019-02-15 | 常州市派腾电子技术服务有限公司 | Electronic cigarette and its power supply architecture |
| CN107612118B (en) * | 2017-10-20 | 2019-01-04 | 天津瑞发科半导体技术有限公司 | A kind of electric power controller and management method |
| WO2020140282A1 (en) * | 2019-01-04 | 2020-07-09 | 华为技术有限公司 | Charging circuit and wireless charging control method |
| CN113419586A (en) * | 2021-06-24 | 2021-09-21 | Tcl华星光电技术有限公司 | Reference voltage generating circuit and generating method thereof |
| US11538386B1 (en) | 2021-06-24 | 2022-12-27 | Tcl China Star Optoelectronics Technology Co., Ltd. | Reference voltage generation circuit and its generation method, display device |
| CN113612208B (en) * | 2021-07-20 | 2022-10-04 | Tcl华星光电技术有限公司 | Current limiting circuit |
| CN115051560B (en) * | 2022-07-19 | 2023-06-06 | 江西络鑫科技有限公司 | Automatic voltage-regulating type power supply circuit |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101247053B (en) * | 2008-01-22 | 2010-10-27 | 艾默生网络能源有限公司 | Battery-connected voltage-boosting and reducing converting circuit and device, DC back-up power device |
| CN201450084U (en) * | 2009-01-08 | 2010-05-05 | 张�雄 | Usb multifunctional battery |
| CN102629825A (en) * | 2012-04-26 | 2012-08-08 | 厦门理挚半导体科技有限公司 | Circuit structure of realizing synchronous buck-type charging and boost-type power supply by using single inductor |
| CN103051042A (en) * | 2012-07-13 | 2013-04-17 | 山大鲁能信息科技有限公司 | Direct current uninterruptible power supply |
| EP3031119A2 (en) * | 2013-09-09 | 2016-06-15 | Apple Inc. | Universal power adapter |
| CN104253469B (en) * | 2014-09-24 | 2017-03-15 | 于志章 | Secondary battery management of charging and discharging system |
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2016
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| CN105471049A (en) | 2016-04-06 |
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Granted publication date: 20180720 Termination date: 20210108 |