CN104333090B - For realizing mobile terminal and its charging method of large current charge - Google Patents
For realizing mobile terminal and its charging method of large current charge Download PDFInfo
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- CN104333090B CN104333090B CN201410661149.4A CN201410661149A CN104333090B CN 104333090 B CN104333090 B CN 104333090B CN 201410661149 A CN201410661149 A CN 201410661149A CN 104333090 B CN104333090 B CN 104333090B
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 230000001681 protective effect Effects 0.000 claims abstract description 53
- 238000001514 detection method Methods 0.000 claims abstract description 48
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 29
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 29
- 230000005611 electricity Effects 0.000 claims description 12
- 239000000284 extract Substances 0.000 claims description 12
- 230000036772 blood pressure Effects 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 238000010304 firing Methods 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 102100028043 Fibroblast growth factor 3 Human genes 0.000 description 1
- 102100024061 Integrator complex subunit 1 Human genes 0.000 description 1
- 101710092857 Integrator complex subunit 1 Proteins 0.000 description 1
- 108050002021 Integrator complex subunit 2 Proteins 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect 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
- H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
- H02J7/0045—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction concerning the insertion or the connection of the 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
- H02J7/00304—Overcurrent 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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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 for mobile terminal and its charging method of realizing large current charge, being detected the charging current of charger output by current detection module；When charging current is more than predetermined current, charging current is switched to export to power management module less than or equal to the first charging current of predetermined current by current control module；By power management module, the first charging current is exported to central processing unit afterwards；Afterwards the difference between charging current and the first charging current is calculated by central processing unit, output size is the second charging current of difference to overvoltage protective module；When the second charging current is less than or equal to predetermined current, the second charging current is returned to by central processing unit by overvoltage protective module；Finally by central processing unit, the first charging current being added with the second charging current, and export to lithium cell charging, it is achieved thereby that not interrupting when charging current is more than setting electric current charging, and also further shorten the charging interval using large current charge.
Description
Technical field
The present invention relates to charge control technical field and in particular to a kind of mobile terminal for realizing large current charge and
Its charging method.
Background technology
With the development of intelligent mobile terminal, intelligent terminal（As smart mobile phone）Function stronger and stronger, Consumer's Experience
Also more and more abundanter.User when experiencing these powerful functions of intelligent mobile terminal, to intelligent mobile terminal battery capacity
Require higher.The capacity of intelligent mobile terminal lithium battery is typically above 2000mAh at present, and charging current requires more than 1A
The requirement to the charging interval for the high-capacity lithium battery can be met, and the charging interval is preferably lower than 3 hours.
But, due to being limited by power management module internal over pressure protection location, the charging electricity of current smart mobile phone
All less than 1A, when charging current is more than 1A, the internal over pressure protection location of power management module is shut off stream, makes battery not
Can charge, lead to extend the charging interval it is impossible to meet quick charge demand.
Therefore, prior art could be improved and innovates.
Content of the invention
In view of in place of above-mentioned the deficiencies in the prior art, it is an object of the invention to provide one kind is used for realizing large current charge
Mobile terminal and its charging method, can be charged the battery using this charging current when charging current exceedes the electric current of setting,
Thus shortening the charging interval.
In order to achieve the above object, this invention takes technical scheme below：
A kind of mobile terminal for realizing large current charge, including：
Current detection module, for detecting the charging current of charger output；
Current control module, for charging current be more than predetermined current when, the charging that will export from current detection module
Electric current is converted to and exports to power management module less than or equal to the first charging current of described predetermined current；
Power management module, for when charging current is more than described predetermined current, that current control module is exported
One charging current exports to central processing unit；
Central processing unit, for calculating the charging current of charger output and the first charging electricity of power management module output
Difference between stream, output size is the second charging current of described difference to overvoltage protective module；
Overvoltage protective module is for receiving the second charging current of central processing unit output and little in the second charging current
When equal to predetermined current, the second charging current is returned to central processing unit；
Described central processing unit, is additionally operable to receive the second charging current of overvoltage protective module output, first is charged electric
Stream is added with the second charging current, and output size is the charging current of the first charging current and the second charging current sum to lithium
Battery charges.
In the described mobile terminal for realizing large current charge, described current control module specifically includes：
Current/voltage converting unit, for when charging current is more than described predetermined current, current detection module being exported
Charging current be converted to charging voltage, export to pressure unit；
Pressure unit, the charging voltage for exporting current/voltage converting unit carries out blood pressure lowering process；
Voltage current conversion unit, the charging voltage for exporting pressure unit is converted to less than or equal to predetermined current
First charging current exports to power management module.
In the described mobile terminal for realizing large current charge, described central processing unit specifically includes：
Internal memory unit, for storing subtraction instruction control signal and addition instruction control signal；
Internal instruction register unit, for being simultaneously received charging current and the first charging current in central processing unit
When, extract subtraction instruction control signal from described internal memory unit；
ALU, for according to subtraction instruction control signal, calculating between charging current and the first charging current
Difference, output size is the second charging current of described difference to overvoltage protective module；
Described internal instruction register unit, when being additionally operable to overvoltage protective module output the second charging current, deposits from inside
Storage unit extracts addition instruction control signal；
ALU, is additionally operable to according to addition instruction control signal, the second charging that overvoltage protective module is exported
The first charging current that electric current is exported with power management module is added, and output size is the first charging current and the second charging electricity
The electric current of stream sum is to lithium cell charging.
In the described mobile terminal for realizing large current charge,
Described internal memory unit, is additionally operable to store the first control instruction signal and the unlatching of firing current detection module
Second control instruction signal of current control module；
Described internal instruction register unit, is additionally operable to, when described charging current is more than predetermined current, call described the
One control instruction signal and the second control instruction signal；
Described central processing unit also includes：Control signal output unit, for export described first control instruction signal and
Second control instruction signal, is separately turned on current detection module and current control module.
In the described mobile terminal for realizing large current charge,
Described power management module, is additionally operable to, when described charging current is less than or equal to described predetermined current, electric current be examined
The charging current surveying module output exports to lithium battery；
Described central processing unit, is additionally operable to, when described charging current is less than or equal to described predetermined current, cut out described electricity
Flow control module and overvoltage protective module.
A kind of charging method of the mobile terminal for realizing large current charge described above, comprises the steps：
A, the charging current being exported by current detection module detection charger；
B, when described charging current be more than predetermined current when, the charging that current control module will export from current detection module
Electric current switchs to export to power management module less than or equal to the first charging current of described predetermined current；
C, by power management module, described first charging current is exported to central processing unit；
First charging of D, the charging current calculating charger output by central processing unit and power management module output
Difference between electric current, output size is the second charging current of described difference to overvoltage protective module；
E, described second charging current is received by overvoltage protective module, and be less than or equal to predetermined current in the second charging current
When, the second charging current is returned to central processing unit；
F, by central processing unit, the first charging current is added with the second charging current, and output size is first to charge electricity
The charging current of stream and the second charging current sum is to lithium cell charging.
In the method for described large current charge, described step B specifically includes：
B1, described charging current be more than predetermined current when, current detection module is exported by current/voltage converting unit
Charging current is converted to charging voltage, exports to pressure unit；
B2, the charging voltage that current/voltage converting unit exports is carried out by blood pressure lowering process by pressure unit；
B3, by voltage current conversion unit, the charging voltage after pressure unit blood pressure lowering is converted to less than or equal to predetermined current
The first charging current export to power management module.
In the method for described large current charge, described step D specifically includes：
D1, central processing unit be simultaneously received charging current and the first charging current input when, deposited by built-in command
Device unit extracts subtraction instruction control signal from internal memory unit；
D2, by ALU according to subtraction instruction control signal, calculate between charging current and the first charging current
Difference, output size is the second charging current of described difference to overvoltage protective module.
In the method for described large current charge, described step F specifically includes：
F1, overvoltage protective module export the second charging current when, deposited from inside by described internal instruction register unit
Storage unit extracts addition instruction control signal；
F2, by described ALU according to addition instruction control signal, second fill what overvoltage protective module exported
The first charging current that electric current is exported with power management module is added, and output size is the first charging current and the second charging
The electric current of electric current sum is to lithium cell charging.
In the method for described large current charge, described step B also includes：It is less than or equal to described pre- in described charging current
If during electric current, described power management module exports the charging current that current detection module exports to lithium battery；Simultaneously by central authorities
Processor cuts out current control module and overvoltage protective module.
Compared to prior art, provided by the present invention for realizing mobile terminal and its charging method of large current charge,
Detect the charging current of charger output by current detection module；When described charging current is more than predetermined current, current control
The charging current exporting from current detection module is switched to the first charging current output less than or equal to described predetermined current by module
To power management module；By power management module, described first charging current is exported to central processing unit afterwards；Pass through afterwards
Central processing unit calculates the difference between the charging current of charger output and the first charging current of power management module output,
Output size is the second charging current of described difference to overvoltage protective module；Receive described second by overvoltage protective module again to fill
Electric current, and when the second charging current is less than or equal to predetermined current, the second charging current is returned to central processing unit；Finally
By central processing unit, the first charging current is added with the second charging current, and output size is filled for the first charging current and second
The charging current of electric current sum is to lithium cell charging, it is achieved thereby that not interrupting filling when charging current is more than setting electric current
Electricity, and also further shorten the charging interval using large current charge.
Brief description
Fig. 1 is used for for the present invention realizing the structured flowchart of the mobile terminal of large current charge.
Fig. 2 is used for the flow chart realizing the charging method of the mobile terminal of large current charge for the present invention.
Fig. 3 is used for charging current in the mobile terminal realize large current charge and is more than signal during scheduled current for the present invention
Flow to schematic diagram.
Fig. 4 is used for charging current in the mobile terminal realize large current charge and is more than signal during scheduled current for the present invention
Flow to schematic diagram.
Specific embodiment
The present invention provides a kind of mobile terminal for realizing large current charge and its charging method, for making the mesh of the present invention
, technical scheme and effect clearer, clear and definite, the present invention is described in more detail for the embodiment that develops simultaneously referring to the drawings.
It should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Refer to Fig. 1, the mobile terminal provided by the present invention for realizing large current charge includes：Current detection module
10th, current control module 20, power management module 30, central processing unit 40 and overvoltage protective module 50.Described current detecting mould
Block 10 connects charger 60, current detection module 10, current control module 20, power management module 30 and overvoltage protective module 50
It is all connected with central processing unit 40, the lithium battery 70 of described central processing unit 40 and power management module 30 connection mobile terminal.
Wherein, described current detection module 10 is used for detecting the charging current of charger 60 output.Described current control mould
Block 20 be used for charging current be more than predetermined current when, by the charging current exporting from current detection module 10 be converted to less than etc.
The first charging current in described predetermined current exports to power management module 30.Described power management module 30 is used for charging
When electric current is more than described predetermined current, the first charging current that current control module 20 is exported exports to central processing unit 40.
Described central processing unit 40 is used for calculating the charging current of charger 60 output and power management module 30 output
Difference between first charging current, output size is the second charging current of described difference to overvoltage protective module 50.Described
Overvoltage protective module 50 is used for receiving the second charging current of central processing unit 40 output, and is less than or equal in the second charging current
During predetermined current, the second charging current is returned to central processing unit 40.
Described central processing unit 40 is additionally operable to receive the second charging current of overvoltage protective module 50 output, and first is charged
Electric current and the second charging current are added, and output size be the first charging current and the second charging current sum charging current to
Lithium battery 70 charges.
When being embodied as, described current control module 20 specifically includes current/voltage converting unit 201, pressure unit 202
With voltage current conversion unit 203.Described current/voltage converting unit 201 is used for being more than described predetermined current in charging current
When, the charging current that current detection module 10 is exported is converted to charging voltage, exports to pressure unit 202.Described blood pressure lowering list
The charging voltage that unit 202 is used for exporting current/voltage converting unit 201 carries out blood pressure lowering process.Described voltage current conversion unit
203 be used for charging voltages that pressure unit 202 is exported be converted to less than or equal to the first charging current of predetermined current export to
Power management module 30.
Please continue to refer to Fig. 1, described central processing unit 40 includes internal memory unit 401, built-in command is deposited
Device unit 402 and control signal output unit 404, described internal memory unit 401 is used for storing subtraction instruction control signal
With addition instruction control signal.Described internal instruction register unit 402 is used for being simultaneously received charging in central processing unit 40
When electric current and the first charging current, extract subtraction instruction control signal from described internal memory unit 401.Described arithmetical logic
Unit 403 is used for, according to subtraction instruction control signal, calculating the difference between charging current and the first charging current, output size
For described difference the second charging current to overvoltage protective module 50.
When described internal instruction register unit 402 is additionally operable to overvoltage protective module 50 output the second charging current, from interior
Portion's memory cell 401 extracts addition instruction control signal.Described ALU 403 is additionally operable to according to addition instruction control
Signal, the first charging current phase that the second charging current that overvoltage protective module 50 is exported is exported with power management module 30
Plus, and output size is that the electric current of the first charging current and the second charging current sum charges to lithium battery 70.
Further, described internal memory unit 401 is additionally operable to store the first control of firing current detection module 10
Command signal, the second control instruction signal of firing current control module 20, high level signal etc..Described internal instruction register
Unit 402 is additionally operable to, when described charging current is more than predetermined current, call described first control instruction signal and the second control
Command signal.Described central processing unit 40 also includes control signal output unit 404, for exporting described first control instruction letter
Number and the second control instruction signal, be separately turned on current detection module 10 and current control module 20.
Further, described power management module 30 is additionally operable to be less than or equal to described predetermined current in described charging current
When, the charging current that current detection module 10 is exported exports to lithium battery 70.Described central processing unit 40 is additionally operable to described
When charging current is less than or equal to described predetermined current, close described current control module 20 and overvoltage protective module.
The present invention correspondingly provides a kind of charging method of the above-mentioned mobile terminal for realizing large current charge, such as schemes
Shown in 2, described charging method comprises the steps：
S100, the charging current being exported by current detection module detection charger；
, when described charging current is more than predetermined current, current control module is by filling of exporting from current detection module for S200
Electric current switchs to export to power management module less than or equal to the first charging current of described predetermined current；
S300, by power management module, described first charging current is exported to central processing unit；
The first of S400, the charging current being calculated charger output by central processing unit and power management module output is filled
Difference between electric current, output size is the second charging current of described difference to overvoltage protective module；
S500, described second charging current is received by overvoltage protective module, and be less than or equal in the second charging current default
During electric current, the second charging current is returned to central processing unit；
S600, by central processing unit, the first charging current is added with the second charging current, and output size is filled for first
The charging current of electric current and the second charging current sum is to lithium cell charging.
In step s 200, when described charging current is less than or equal to described predetermined current, described power management module will
The charging current of current detection module output exports to lithium battery；Current control module, overvoltage are closed by central processing unit simultaneously
Protection module and ALU, the charging current of now charger output carries out subtraction meter without going past ALU
Calculate, then charging current also carries out additional calculation through ALU again without going past after overvoltage protective module, but directly
Directly charge the battery through current detection module and power management module, because it is existing charging technique, do not make in detail herein
State.
Wherein, described step S200 specifically includes：When described charging current is more than predetermined current, current/voltage conversion is single
The charging current that current detection module is exported by unit is converted to charging voltage, exports to pressure unit；Afterwards, pass through pressure unit
The charging voltage of current/voltage converting unit output is carried out blood pressure lowering process；By voltage current conversion unit, pressure unit is dropped again
Charging voltage after pressure is converted to and exports to power management module less than or equal to the first charging current of predetermined current.
Described step S400 specifically includes：It is simultaneously received charging current and the input of the first charging current in central processing unit
When, subtraction instruction control signal is extracted from internal memory unit by internal instruction register unit；Again by ALU
According to subtraction instruction control signal, calculate the difference between charging current and the first charging current, output size is described difference
The second charging current to overvoltage protective module.The present invention is divided into two by the charging current that step S400 will be greater than preset value
Road, and so that two-way electric current is respectively less than equal to predetermined current.
In order to realize large current charge, described step S600 specifically includes：Charge in overvoltage protective module output second electric
During stream, addition instruction control signal is extracted from internal memory unit by described internal instruction register unit；Again by described calculation
Art logical block is according to addition instruction control signal, the second charging current that export overvoltage protective module and power management module
First charging current of output is added, and output size is the electric current of the first charging current and the second charging current sum to lithium electricity
Charge in pond.The two-way being divided in step S400 electric current is merged into a road electric current by step S600 and is filled to lithium battery by the present invention
Electricity, it is achieved that when charging current is more than predetermined current, can power management module not turn off, directly utilizes large current charge, and
Large current charge can also shorten the charging interval.
In order to be better understood from technical scheme, below with predetermined current for 1A as specific embodiment, and combine
Fig. 3 and Fig. 4 is described in detail to the charging method of the present invention：
First, charging current is more than 1A
Refer to Fig. 3, dotted arrow is the signal flow direction of subtraction instruction in figure 3, and heavy solid line arrows are addition instruction
Signal flows to, and thick dashed line arrow is the signal flow direction of execution subtraction instruction and addition instruction, and solid line represents that charging current is more than 1A
When, do not have electric current to flow through.
When charging current I that current detection module 10 detects charger 60 output is more than 1A, current detection module 10
Send interrupt signal INT1 to central processing unit 40 it is desirable to process the interrupt requests of current detection module 10, that is, ask centre
Reason device 40 passes through process and allows this charging current to charge to the lithium battery 70 of intelligent mobile terminal.
After described central processing unit 40 receives the interrupt requests of current detection module 10 transmission, from its internal memory unit
Call a command signal in 401 to internal instruction register unit 402, make internal instruction register unit 402 execute this instruction
Signal.
Again the first control signal is sent to current detection module 10 it is desirable to it is opened makes by control signal output unit 404
Charging current I output more than 1A, sends the second control signal to current control module 20 it is desirable to this is more than filling of 1A simultaneously
Electric current I controls in the state less than 1A, and that is, current control module 20 needs charging current I exporting charger 60 to be adjusted to
The internal over pressure protection location 301 of power management module 30 allows charging current I1 of the maximum passed through.
After current detection module 10 starts, by its internal current/voltage converting unit 201 by current detection module
The charging current of 10 outputs is converted to voltage, is reduced voltage by pressure unit 202 afterwards, then voltage current conversion unit
The charging voltage signal of reduction is converted into charging current I1 less than 1A by 203.
In current control module 20, charging current I that charger 60 exports is adjusted to the inside mistake of power management module 30
Pressure protection location 301 allow by maximum charging current I1 after, by the control signal output unit 404 of central processing unit 40
Send high level signal 1 to the internal over pressure protection location 301 of power management module 30, so that Overvoltage protecting unit is opened, now
Current control module 20 exports charging current I1 to described internal over pressure protection location 301.Because charging current I1 now is little
In 1A, meet the charging requirement of power management module 30, therefore power management module 30 will not turn off output.
After power management module 30 starts, central processing unit 40 extracts subtraction instruction I- from internal memory unit 401
I1=I2 deposits in internal instruction register unit 402 and executes this instruction.ALU within central processing unit 40
Charging current I that export charger 60 and internal over pressure protection location 301 allow charging current I1 of the maximum passed through to carry out
Subtraction obtains charging current I2.
Central processing unit 40 sends high level signal 2 and makes overvoltage protective module 50 to overvoltage protective module 50 simultaneously（Also referred to as
Outside overvoltage protective module）Open, now, charging current I2 of ALU output can input to overvoltage protective module
In 50, judge whether charging current I2 is less than 1A by overvoltage protective module 50.
Because big charging current at present is generally 1.5A, so charging current I divide into two after subtraction
Road charging current I1 and I2, this two-way charging current all can be less than 1A, makes power management module 30 and overvoltage protective module 50 equal
Can normal work.
In order to shorten the charging interval, after overvoltage protective module 50 receives charging current I2, then charging current I2 is fed back
To central processing unit 40, central processing unit 40 extracts addition instruction I1+I2=I from internal memory unit 401 and deposits in it
Portion's command register unit 402, and execute this addition instruction.Internal over pressure protection location 301 is exported by ALU 403
Charging current I1 and exported to charging current I2 of overvoltage protective module 50 by the subtraction that ALU 403 is carried out
Carry out charging current I that additional calculation obtains the output of charger 60 unit, directly export the lithium electricity to mobile terminal for charging current I
Charge in pond 70.Here by additional calculation partly in order to judge to input the charging current of lithium battery 70 whether with charger 60
The charging current of output is consistent, and the charging current more than 1A on the other hand can also be enable to charge to lithium battery 70, and existing
Technology is compared, and not only will not interrupt charging, and also can shorten charging interval lifting Consumer's Experience.
2nd, charging current is less than 1A
Refer to Fig. 4, solid arrow is the signal flow direction of charging current in the diagram, solid line represents that charging current is less than 1A
When, do not have electric current to flow through.
When charging current I that current detection module 10 detects charger 60 output is less than 1A, current detection module 10
Send interrupt signal INT2 to central processing unit 40 it is desirable to process the request that current detection module 10 sends.
After central processing unit 40 receives the interrupt requests of current detection module 10 transmission, from its internal memory unit 401
In call another command signal to the internal instruction register unit 402 of central processing unit 40, and execute this command signal.
Charging current I due to charger 60 output is less than 1A, then central processing unit 40 will not send the second control signal
To current control module 20, now current control module 20 is in the closed mode of acquiescence.Central processing unit 40 sends high level
The internal over pressure protection location 301 of signal 1 to power management module 30 makes internal over pressure protection location 301 open, now electric current
Charging current I of detection module 10 output is directly inputted in internal over pressure protection location 301.
Charging current I due to charger 60 output will not be by the internal over pressure protection location in power management module 30
301 shutoffs, then this charging current I carries out subtraction without going past ALU 403, then charging current also will not be passed through
Overvoltage protective module 50, then charging current also carry out additional calculation without going past ALU 403.Therefore charger 60 is defeated
The lithium battery 70 that charging current I less than 1A going out can directly be exported by internal over pressure protection location 301 to mobile terminal fills
Electricity.
In sum, present invention achieves not interrupting when charging current is more than setting electric current charging, and using electricity greatly
Current charge also further shorten the charging interval, lifts Consumer's Experience effect.
It is understood that for those of ordinary skills, with technology according to the present invention scheme and its can send out
Bright design in addition equivalent or change, and all these change or replace the guarantor that all should belong to appended claims of the invention
Shield scope.
Claims (10)
1. a kind of mobile terminal for realizing large current charge is it is characterised in that described mobile terminal includes：
Current detection module, for detecting the charging current of charger output；
Current control module, for charging current be more than predetermined current when, the charging current that will export from current detection module
Be converted to and export to power management module less than or equal to the first charging current of described predetermined current；
Power management module, for when charging current is more than described predetermined current, first filling what current control module exported
Electric current exports to central processing unit；
Central processing unit, for calculate charger output the output of charging current and power management module the first charging current it
Between difference, output size is the second charging current of described difference to overvoltage protective module；
Overvoltage protective module, for receiving the second charging current of central processing unit output, and be less than in the second charging current etc.
When predetermined current, the second charging current is returned to central processing unit；
Described central processing unit, is additionally operable to receive the second charging current of overvoltage protective module output, by the first charging current and
Second charging current is added, and output size is the charging current of the first charging current and the second charging current sum to lithium battery
Charge.
2. the mobile terminal for realizing large current charge according to claim 1 is it is characterised in that described current control
Module specifically includes：
Current/voltage converting unit, for when charging current is more than described predetermined current, by filling that current detection module exports
Electric current is converted to charging voltage, exports to pressure unit；
Pressure unit, the charging voltage for exporting current/voltage converting unit carries out blood pressure lowering process；
Voltage current conversion unit, the charging voltage for exporting pressure unit is converted to first less than or equal to predetermined current
Charging current exports to power management module.
3. the mobile terminal for realizing large current charge according to claim 2 is it is characterised in that described central authorities are processed
Implement body includes：
Internal memory unit, for storing subtraction instruction control signal and addition instruction control signal；
Internal instruction register unit, for when central processing unit is simultaneously received charging current and the first charging current, from
Described internal memory unit extracts subtraction instruction control signal；
ALU, for according to subtraction instruction control signal, calculating the difference between charging current and the first charging current
Value, output size is the second charging current of described difference to overvoltage protective module；
Described internal instruction register unit, when being additionally operable to overvoltage protective module output the second charging current, from internal storage
Unit extracts addition instruction control signal；
ALU, is additionally operable to according to addition instruction control signal, the second charging current that overvoltage protective module is exported
Is added with the first charging current of power management module output, and output size for the first charging current and the second charging current it
The electric current of sum is to lithium cell charging.
4. the mobile terminal for realizing large current charge according to claim 3 it is characterised in that
Described internal memory unit, is additionally operable to store the first control instruction signal and the firing current of firing current detection module
Second control instruction signal of control module；
Described internal instruction register unit, is additionally operable to, when described charging current is more than predetermined current, call described first control
Command signal processed and the second control instruction signal；
Described central processing unit also includes：Control signal output unit, for exporting described first control instruction signal and second
Control instruction signal, is separately turned on current detection module and current control module.
5. the mobile terminal for realizing large current charge according to claim 1 it is characterised in that
Described power management module, is additionally operable to when described charging current is less than or equal to described predetermined current, by current detecting mould
The charging current of block output exports to lithium battery；
Described central processing unit, is additionally operable to, when described charging current is less than or equal to described predetermined current, cut out described electric current control
Molding block and overvoltage protective module.
6. a kind of as claimed in claim 1 charging method being used for realizing the mobile terminal of large current charge it is characterised in that
Comprise the steps：
A, the charging current being exported by current detection module detection charger；
B, when described charging current be more than predetermined current when, the charging current that current control module will export from current detection module
Switch to export to power management module less than or equal to the first charging current of described predetermined current；
C, by power management module, described first charging current is exported to central processing unit；
First charging current of D, the charging current calculating charger output by central processing unit and power management module output
Between difference, output size is the second charging current of described difference to overvoltage protective module；
E, described second charging current is received by overvoltage protective module, and when the second charging current is less than or equal to predetermined current,
Second charging current is returned to central processing unit；
F, by central processing unit, the first charging current is added with the second charging current, and output size be the first charging current and
The charging current of the second charging current sum is to lithium cell charging.
7. the charging method of the mobile terminal for realizing large current charge according to claim 6 is it is characterised in that institute
State step B to specifically include：
B1, described charging current be more than predetermined current when, the charging that current detection module is exported by current/voltage converting unit
Electric current is converted to charging voltage, exports to pressure unit；
B2, the charging voltage that current/voltage converting unit exports is carried out by blood pressure lowering process by pressure unit；
B3, by voltage current conversion unit, the charging voltage after pressure unit blood pressure lowering is converted to less than or equal to predetermined current
One charging current exports to power management module.
8. the charging method of the mobile terminal for realizing large current charge according to claim 7 is it is characterised in that institute
State step D to specifically include：
D1, central processing unit be simultaneously received charging current and the first charging current input when, by internal instruction register list
Unit extracts subtraction instruction control signal from internal memory unit；
D2, by ALU according to subtraction instruction control signal, calculate the difference between charging current and the first charging current
Value, output size is the second charging current of described difference to overvoltage protective module.
9. the charging method of the mobile terminal for realizing large current charge according to claim 8 is it is characterised in that institute
State step F to specifically include：
F1, overvoltage protective module export the second charging current when, by described internal instruction register unit from internal storage
Unit extracts addition instruction control signal；
F2, by described ALU according to addition instruction control signal, the second charging electricity that overvoltage protective module is exported
Stream is added with the first charging current of power management module output, and output size is the first charging current and the second charging current
The electric current of sum is to lithium cell charging.
10. the mobile terminal for realizing large current charge according to claim 6 charging method it is characterised in that
Described step B also includes：When described charging current is less than or equal to described predetermined current, electric current is examined by described power management module
The charging current surveying module output exports to lithium battery；Current control module and overvoltage protection mould are closed by central processing unit simultaneously
Block.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410661149.4A CN104333090B (en) | 2014-11-19 | 2014-11-19 | For realizing mobile terminal and its charging method of large current charge |
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| CN201410661149.4A CN104333090B (en) | 2014-11-19 | 2014-11-19 | For realizing mobile terminal and its charging method of large current charge |
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| CN104333090B true CN104333090B (en) | 2017-03-08 |
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| CN110212598A (en) * | 2016-04-12 | 2019-09-06 | Oppo广东移动通信有限公司 | Battery charging management method, apparatus and user equipment |
| CN111342519B (en) * | 2020-03-16 | 2022-01-04 | Tcl移动通信科技（宁波）有限公司 | Charging control method and device, storage medium and mobile terminal |
| CN112701758B (en) * | 2021-01-13 | 2023-12-26 | 国网甘肃省电力公司张掖供电公司 | Charging current setting method, system and mobile terminal |
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