CN104578355B - Charging circuit and portable electric appts - Google Patents
Charging circuit and portable electric appts Download PDFInfo
- Publication number
- CN104578355B CN104578355B CN201510033080.5A CN201510033080A CN104578355B CN 104578355 B CN104578355 B CN 104578355B CN 201510033080 A CN201510033080 A CN 201510033080A CN 104578355 B CN104578355 B CN 104578355B
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- China
- Prior art keywords
- charging
- rechargeable battery
- module
- adapter
- mode
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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
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
- H02J7/04—Regulation of charging current or voltage
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a kind of charging circuit and portable electric appts, this charging circuit includes PMU module, control module and charging inlet, charging inlet includes charging end and the signal end being connected with charging adapter, the input of PMU module is connected with charging end, to receive the power supply of charging adapter input, the outfan of PMU module electrically connects with rechargeable battery, and rechargeable battery is charged after input power is carried out respective handling by PMU module；First end of control module is connected with PMU module, to obtain the current voltage of rechargeable battery；Second end of control module is connected with signal end, and with when the current voltage of rechargeable battery is more than preset voltage value, the signal end of transmission preset signals to charging inlet, so that charging adapter switches to constant current charging mode from fast charge mode.Present invention achieves a kind of charging circuit that can carry out quick charge to rechargeable battery, and this charging circuit has circuit structure simply, lower-cost advantage.
Description
Technical field
The present invention relates to a kind of charging circuit and portable electric appts.
Background technology
Portable electric appts, owing to having rechargeable battery, needs to design charge inside circuit, logical to ensure
Cross and realize when power supply adaptor electrically connects with city being charged to the internal battery of this equipment.
In the charging circuit of existing portable electric appts, control chip can send signal according to the electricity of battery
To adapter, by the output of adjustment adapter to adapt to the change of battery electric quantity, thus realize equipment
The quick charge of battery.And the signal transmission between the control chip of equipment and adapter uses chip substantially
Realizing the mode of code, and this circuit needs to use high pass chip, relatively costly, circuit structure is more multiple
Miscellaneous.
Foregoing is only used for auxiliary and understands technical scheme, does not represent and recognizes that foregoing is
Prior art.
Summary of the invention
Present invention is primarily targeted at a kind of charging circuit of offer, it is desirable to provide one is capable of quickly
Charging, and circuit structure charging circuit simple, lower-cost.
For achieving the above object, the present invention provides a kind of charging circuit, is used for receiving charging adapter input
Power supply, and be supplied to rechargeable battery and be charged, described charging adapter have fast charge mode and
Constant current charging mode, the voltage that described charging adapter exports under described fast charge mode is more than described
The voltage that charging adapter exports under constant current charging mode；Described charging circuit includes PMU module, control
Molding block and charging inlet, described charging inlet includes the charging end for being connected and letter with charging adapter
Number end, the input of described PMU module is connected with described charging end, defeated to receive described charging adapter
The power supply entered, the outfan of described PMU module electrically connects with described rechargeable battery, described PMU module
After input power is carried out respective handling, rechargeable battery is charged；First end of described control module with
Described PMU module connects, to be obtained the current voltage of rechargeable battery by described PMU module；Described
Second end of control module is connected with described signal end, current in order at the described rechargeable battery got
When voltage is more than preset voltage value, send the signal end of preset signals extremely described charging inlet, so that charging
Adapter switches to described constant current charging mode from described fast charge mode.
Preferably, the described charging adapter initial output mode when powering on is described fast charge mode.
Preferably, the signal end of described charging inlet is differential signal end.
Preferably, described differential signal end includes DP+ port and DP-port.
Preferably, described charging inlet is USB interface.
Preferably, after input power is processed by described PMU module, constant output is 4.2 volts.
Additionally, for achieving the above object, the present invention also provides for a kind of portable electric appts, described portable
Formula electronic equipment includes charging circuit as above；Described charging circuit includes PMU module, controls mould
Block and charging inlet, described charging inlet includes the charging end for being connected and signal end with charging adapter,
The input of described PMU module is connected with described charging end, to receive the electricity of described charging adapter input
Source, the outfan of described PMU module electrically connects with described rechargeable battery, and described PMU module is to input
Rechargeable battery is charged after carrying out respective handling by power supply；First end of described control module is with described
PMU module connects, to be obtained the current voltage of rechargeable battery by described PMU module；Described control
Second end of module is connected with described signal end, in order to the current voltage at the described rechargeable battery got
During more than preset voltage value, send the signal end of preset signals extremely described charging inlet, so that adaptive charging
Device switches to described constant current charging mode from described fast charge mode.
The present invention is by arranging PMU module, control module and charging inlet, and described charging inlet includes using
In the charging end being connected with charging adapter and signal end, the input of described PMU module and described charging
End connects, and to receive the power supply of described charging adapter input, the outfan of described PMU module is with described
Rechargeable battery electrically connects, and rechargeable battery is carried out after input power is carried out respective handling by described PMU module
Charging；First end of described control module is connected with described PMU module, with by described PMU module
Obtain the current voltage of rechargeable battery；Second end of described control module is connected with described signal end, in order to
When the current voltage of the described rechargeable battery got is more than preset voltage value, send preset signals to institute
State the signal end of charging inlet, so that charging adapter switches to described constant current from described fast charge mode
Charge mode.Present invention achieves a kind of charging circuit that can carry out quick charge to rechargeable battery, and
And this charging circuit has circuit structure simply, lower-cost advantage.
Accompanying drawing explanation
Fig. 1 is the structural representation of charging circuit preferred embodiment of the present invention.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, do referring to the drawings further
Explanation.
Detailed description of the invention
Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not used to limit
Determine the present invention.
The present invention provides a kind of charging circuit, it is adaptable in portable electric appts, this charging circuit is used for
Receive the power supply of charging adapter input, and the rechargeable battery being supplied to portable electric appts is charged；
Wherein, charging adapter is configured with fast charge mode and constant current charging mode, and this charging adapter is in institute
State what the voltage of output under fast charge mode exported under constant current charging mode more than described charging adapter
Voltage, and the initial output mode that this charging adapter is when powering on is described fast charge mode.
With reference to Fig. 1, in one embodiment, described charging circuit includes PMU module 10, control module
20 and charging inlet 30, described charging inlet 30 includes the charging for being connected with charging adapter 100
End 31 and signal end, the input of described PMU module 10 is connected with described charging end 31, to receive
The power supply of described charging adapter 100 input, the outfan of described PMU module 10 and described charged electrical
Pond 200 electrically connects, and input power is carried out after respective handling rechargeable battery 200 by described PMU module 10
It is charged；First end of described control module 20 is connected with described PMU module 10, with by described
PMU module 10 obtains the current voltage of rechargeable battery 200；Second end of described control module 20 and institute
State signal end to connect, in order to the current voltage at the described rechargeable battery 200 got more than predeterminated voltage
During value, send the signal end of preset signals extremely described charging inlet 30, so that charging adapter 100 is from institute
State fast charge mode and switch to described constant current charging mode.
In the present embodiment, described charging adapter 100 has fast charge mode and constant current charging mode,
The charging modes that can provide two kinds of different electric pressures is charged to equipment charge battery 200.Wherein,
Under described fast charge mode, described charging adapter 100 output 12 volt-amperes, output voltage 5
Volt, 2.4 amperes of electric current.Under described constant current mode, described charging adapter 100 output 12 volts
Peace, output voltage 12 volts, 1 ampere of electric current.It should be noted that charging adapter 100 of the present invention is defeated
The pattern gone out is not limited to this, and under associative mode, power, voltage and the size of current of output do not limit
Fixed, can set according to practical application request, example illustrative embodiments in the present embodiment is only to facilitate more
The good circuit theory understanding the present invention.Wherein, specified defeated according to rechargeable battery 200 of preset voltage value
Going out voltage to be set, the such as rated output voltage of rechargeable battery 200 is 5V, then preset voltage value can
To be set as about 4.1 volts, to ensure rechargeable battery 200 charging complete 90% under fast charge mode
To 95%, use constant current charging mode the most again, rechargeable battery 200 is filled to 100%, makes charged electrical
Pond 200 is charged both quick, can reduce again the impact on battery life as far as possible.Wherein, PMU module
10 is battery management device, and after input power is carried out conversion process, constant voltage exports to rechargeable battery
200, rechargeable battery 200 is charged by general constant voltage at 4.2 volts, and PMU module 10 is according to input electricity
The size of pressure and rechargeable battery 200 current voltage adjusts accordingly and exports the size of current to rechargeable battery 200.
Wherein, when charging adapter 100 exports 12 volts, PMU module 10 exports to rechargeable battery 200
Electric current is up to 3 amperes, it is ensured that to rechargeable battery 200 quick charge, and when battery charging voltage reaches pre-
If during magnitude of voltage, in order to avoid rechargeable battery 200 overcharges, need to use small area analysis to rechargeable battery 200
Charging, to ensure that rechargeable battery 200 is full of, without regard to overcharging, damages rechargeable battery 200.
It should be appreciated that above-mentioned charging inlet 30 can use usb mode to realize, when needs are given
When rechargeable battery 200 charges, only need to connect charging inlet 30 and charging adapter by USB data line
100.In a preferred embodiment, the signal end of described charging inlet 30 is differential signal end, uses
With transmission control module 20 output differential signal to charging adapter 100.Described differential signal end can wrap
Including DP+ port 32 and DP-port 33, DP+ port 32 and DP-port 33 can transmission logic level letter
Number.The logic level signal of control module 20 output, is fitted to charging adapter 100 by data line transfer
After orchestration receives the logic level signal of DP+ port 32 and DP-port 33 transmission, logic level is believed
Number being analyzed judging, it is as follows that it analyzes judge process: when DP+ port 32 and DP-port 33 transmits
Level signal when being high level (it is of course also possible to being set to low level), then it represents that electricity is less than
Described preset voltage value, needs charging adapter 100 to run fast charge mode.When DP+ port 32 He
When the level signal of DP-port 33 transmission is low level (it is of course also possible to being set to low level),
Then represent that the current electric quantity of rechargeable battery 200, more than preset voltage value, needs charging adapter 100 to switch
To constant current charging mode.Wherein, PMU module 10 detect the current electric quantity of rechargeable battery 200 and accuse
Know that control module 20, control module 20 output signal to DP+ port 32 and DP-port 33 again.
Charging circuit of the present invention is by arranging PMU module 10, control module 20 and charging inlet 30, institute
State charging inlet 30 and include the charging end 31 for being connected with charging adapter 100 and signal end, described
The input of PMU module 10 is connected with described charging end 31, defeated to receive described charging adapter 100
The power supply entered, the outfan of described PMU module 10 electrically connects with described rechargeable battery 200, described PMU
Rechargeable battery 200 is charged after input power is carried out respective handling by module 10；Described control module
First end of 20 is connected with described PMU module 10, to obtain charged electrical by described PMU module 10
The current voltage in pond 200；Second end of described control module 20 is connected with described signal end, in order to obtain
When the current voltage of the described rechargeable battery 200 got is more than preset voltage value, send preset signals to institute
State the signal end of charging inlet 30, so that charging adapter 100 switches to institute from described fast charge mode
State constant current charging mode.Present invention achieves a kind of can give rechargeable battery 200 carry out filling of quick charge
Electricity circuit, and this charging circuit to have circuit structure simple, lower-cost advantage.
The present invention also provides for a kind of portable electric appts, and this portable electric appts includes above-mentioned charged electrical
Road；The detailed construction of described charging circuit can refer to above-described embodiment, and here is omitted；It is appreciated that
, owing to employing above-mentioned charging circuit in portable, therefore, this portable electronic
The embodiment of equipment includes whole technical schemes of the whole embodiment of above-mentioned charging circuit, and the skill reached
Art effect is the most identical, does not repeats them here.
These are only the preferred embodiments of the present invention, not thereby limit the scope of the claims of the present invention, every
Utilize equivalent structure or equivalence flow process conversion that description of the invention and accompanying drawing content made, or directly or
Connect and be used in other relevant technical fields, be the most in like manner included in the scope of patent protection of the present invention.
Claims (5)
1. a charging circuit, for receiving the power supply of charging adapter input, and is supplied to rechargeable battery
Being charged, described charging adapter has fast charge mode and constant current charging mode, and described charging is fitted
The voltage that orchestration exports under described fast charge mode is more than described charging adapter at constant current charging mode
The voltage of lower output；It is characterized in that, the described charging adapter initial output mode when powering on is institute
Stating fast charge mode, described charging circuit includes PMU module, control module and charging inlet, institute
Stating charging inlet and include the charging end for being connected with charging adapter and signal end, described signal end is for poor
Sub-signal end, in order to transmission control module output differential signal to charging adapter, it is achieved adaptive charging
Device switches between fast charge mode and constant current charging mode, the input of described PMU module and institute
State charging end to connect, to receive the power supply of described charging adapter input, the output of described PMU module
End electrically connect with described rechargeable battery, described PMU module input power is carried out respective handling after to filling
Electricity battery is charged；First end of described control module is connected with described PMU module, to pass through
State PMU module and obtain the current voltage of rechargeable battery；Second end of described control module and described signal
End connects, in order to when the current voltage of the described rechargeable battery got is more than preset voltage value, to send
The signal end of preset signals extremely described charging inlet, so that charging adapter is cut from described fast charge mode
Shift to described constant current charging mode.
2. charging circuit as claimed in claim 1, it is characterised in that described differential signal end includes
DP+ port and DP-port.
3. charging circuit as claimed in claim 1, it is characterised in that described charging inlet is USB
Interface.
4. charging circuit as claimed in claim 1, it is characterised in that described PMU module is to input
After power supply processes, constant output is 4.2 volts.
5. a portable electric appts, it is characterised in that described portable electric appts includes such as right
Require the charging circuit described in any one of 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510033080.5A CN104578355B (en) | 2015-01-22 | 2015-01-22 | Charging circuit and portable electric appts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510033080.5A CN104578355B (en) | 2015-01-22 | 2015-01-22 | Charging circuit and portable electric appts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104578355A CN104578355A (en) | 2015-04-29 |
| CN104578355B true CN104578355B (en) | 2016-11-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510033080.5A Expired - Fee Related CN104578355B (en) | 2015-01-22 | 2015-01-22 | Charging circuit and portable electric appts |
Country Status (1)
| Country | Link |
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| CN (1) | CN104578355B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105656140A (en) * | 2016-02-29 | 2016-06-08 | 宇龙计算机通信科技(深圳)有限公司 | Terminal charging control method and control device and terminal |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203747454U (en) * | 2014-01-28 | 2014-07-30 | 广东欧珀移动通信有限公司 | Electronic device charging control device |
| CN103972955B (en) * | 2014-03-24 | 2016-05-25 | 西安乾易企业管理咨询有限公司 | The power supply adaptor of a kind of USB interface charging handshake method and quickly-chargeable |
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Also Published As
| Publication number | Publication date |
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| CN104578355A (en) | 2015-04-29 |
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| CB02 | Change of applicant information |
Address after: 518000 Guangdong Province, Shenzhen Baoan District manhole Tang Gang Taifeng Industrial Zone (HENGQIANG Industrial Park) B building, F building Applicant after: SHENZHEN WASAM TECHNOLOGY CO., LTD. Address before: 518000 Guangdong Province, Shenzhen Baoan District manhole Tang Gang Taifeng Industrial Zone (HENGQIANG Industrial Park) B building, F building Applicant before: Huasen Technology (Shenzhen) Co., Ltd. |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161130 Termination date: 20210122 |