CN109962514A - A kind of charging method and mobile terminal - Google Patents
A kind of charging method and mobile terminal Download PDFInfo
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- CN109962514A CN109962514A CN201910134213.6A CN201910134213A CN109962514A CN 109962514 A CN109962514 A CN 109962514A CN 201910134213 A CN201910134213 A CN 201910134213A CN 109962514 A CN109962514 A CN 109962514A
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- 238000000034 method Methods 0.000 title claims abstract description 40
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- 238000001514 detection method Methods 0.000 abstract description 13
- 230000008569 process Effects 0.000 description 11
- 230000006870 function Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 8
- 238000004590 computer program Methods 0.000 description 7
- 238000012545 processing Methods 0.000 description 7
- 230000006854 communication Effects 0.000 description 4
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- 230000001105 regulatory effect Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 238000005121 nitriding Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
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- 230000003068 static effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
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- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005314 correlation function Methods 0.000 description 1
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- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
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- 230000005484 gravity Effects 0.000 description 1
- 230000001976 improved effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001404 mediated effect Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
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- 238000010295 mobile communication Methods 0.000 description 1
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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
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- H02J7/0077—
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The embodiment of the invention provides a kind of charging method and mobile terminals, are related to technical field of mobile terminals.The initial impedance value that the embodiment of the present invention passes through acquisition charging circuit, obtain the current real impedance values of charging circuit, according to initial impedance value and real impedance values, determine the contact impedance value added at charging interface, according to the heat power consumption threshold value at contact impedance value added and charging interface, the charging current of charger is adjusted.By calculating the contact impedance value added at charging interface; according to the heat power consumption thresholding at contact impedance value added and charging interface; the charging current of dynamic regulation charger; so that the heat power consumption value at charging interface is consistently less than heat power consumption threshold value; so that it is guaranteed that being not in excess temperature at charging interface and plastic cement being caused to melt away, and the detection accuracy of contact impedance value added is high, therefore; the safety that charging interface can more accurately be protected, reduces the crash rate of charging interface.
Description
Technical field
The present embodiments relate to technical field of mobile terminals more particularly to a kind of charging method and mobile terminals.
Background technique
With the continuous development of rapid nitriding, when the electric quantity consumption of mobile terminal totally when, rapid nitriding can
It is fully charged for mobile terminal within the shorter time to realize, better usage experience is brought to user, mainly passes through and mentions
The charging voltage and charging current of high charger improves charge power, to realize the quick charge of mobile terminal, such as uses
The charging voltage and charging current of 10V/4A or 10V/5A, but with the raising of charge power, at mobile terminal charging interface
Plastic cement be easier to melt away.
Currently, temperature is arranged near the charging interface of mobile terminal in order to improve the problem of plastic cement melts away at charging interface
Sensor is spent, such as NTC (Negative Temperature Coefficient, negative temperature coefficient) thermistor, when temperature passes
Sensor detects the charging current for turning charger when temperature is more than setting threshold value down.
But since temperature sensor and charging interface have a certain distance, the accuracy and sensitivity of temperature detection are all
It is relatively low, it therefore, may be only available for relatively serious scene, melt away for plastic cement caused by excess temperature at conventional charging interface
Failure does not have prevention and improved effect.
Summary of the invention
The embodiment of the present invention provides a kind of charging method and mobile terminal, is melted with solving to improve at present plastic cement at charging interface
The method fallen does not have asking for prevention and improvement result for the failure that plastic cement caused by excess temperature at conventional charging interface melts away
Topic.
In order to solve the above-mentioned technical problem, the present invention is implemented as follows:
In a first aspect, the embodiment of the invention provides a kind of charging methods, comprising:
Obtain the initial impedance value of charging circuit；
Obtain the current real impedance values of the charging circuit；
According to the initial impedance value and the real impedance values, the contact impedance value added at charging interface is determined；
According to the heat power consumption threshold value at the contact impedance value added and the charging interface, the charging of charger is adjusted
Electric current.
Second aspect, the embodiment of the invention provides a kind of mobile terminals, comprising:
Initial impedance value obtains module, for obtaining the initial impedance value of charging circuit；
Real impedance values obtain module, for obtaining the current real impedance values of the charging circuit；
Contact impedance value added determining module, for according to the initial impedance value and the real impedance values, determination to be filled
Contact impedance value added at electrical interface；
Charging current adjustment module, for according to the heat power consumption door at the contact impedance value added and the charging interface
Limit value adjusts the charging current of charger.
The third aspect the embodiment of the invention also provides a kind of mobile terminal, including processor, memory and is stored in institute
The computer program that can be run on memory and on the processor is stated, when the computer program is executed by the processor
The step of realizing above-mentioned charging method.
Fourth aspect, the embodiment of the present invention is additionally provided with a kind of computer readable storage medium, described computer-readable
Computer program is stored on storage medium, the computer program realizes the step of above-mentioned charging method when being executed by processor
Suddenly.
In embodiments of the present invention, by obtaining the initial impedance value of charging circuit, the current reality of charging circuit is obtained
Impedance value determines the contact impedance value added at charging interface, according to contact impedance according to initial impedance value and real impedance values
Heat power consumption threshold value at value added and charging interface, adjusts the charging current of charger.By charging in detection charging process
The real impedance values of circuit are compared with the initial impedance value of charging circuit, can calculate the contact impedance at charging interface
Value added, according to the heat power consumption threshold value at contact impedance value added and charging interface, the charging current of dynamic regulation charger,
So that the heat power consumption value at charging interface is consistently less than heat power consumption threshold value, so that it is guaranteed that be not in excess temperature at charging interface and
Plastic cement is caused to melt away, and the detection accuracy of contact impedance value added is high, therefore, can more accurately protect the safety of charging interface,
Reduce the crash rate of charging interface.
Detailed description of the invention
Fig. 1 shows a kind of flow chart of charging method of the embodiment of the present invention；
Fig. 2 shows the charging principle schematic diagrames of the embodiment of the present invention；
Fig. 3 shows a kind of specific flow chart of charging method of the embodiment of the present invention；
Fig. 4 shows the specific flow chart of another charging method of the embodiment of the present invention；
Fig. 5 shows a kind of structural block diagram of mobile terminal of the embodiment of the present invention；
Fig. 6 shows the structural block diagram of another mobile terminal of the embodiment of the present invention；
Fig. 7 shows the hardware structural diagram of the mobile terminal of the embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
Referring to Fig.1, a kind of flow chart of charging method of the embodiment of the present invention is shown, can specifically include following step
It is rapid:
Step 101, the initial impedance value of charging circuit is obtained.
In embodiments of the present invention, it is provided with charging circuit in the terminal, charger is connect with charging cable, will be charged
After line is inserted into the charging interface of mobile terminal, charger can charge to the battery in mobile terminal by charging circuit.
The charging interface of mobile terminal is defined as: data line D-, data line D+, power supply line VBUS, ground wire GND and ID
(it is divided into two kinds of interfaces, A: is connect with ground wire；B: it is not connect with ground wire), the initial impedance value of charging circuit includes: and charger
When the charging interface of the charging cable insertion mobile terminal of connection, the initial contact that is generated between the VBUS and GND at charging interface
Impedance value, line impedance value and other hardware impedance values in charging circuit etc., initial contact impedance value refer to charging
The contact impedance value generated between VBUS and GND when not thering is impurity or foreign matter to enter at mouthful.
After the mobile terminal that completes, the initial impedance value R of charging circuit can detect0, and the initial resistance that will test
Anti- value R0Storage in the terminal, when by charger being the battery charging in mobile terminal, can obtain the charging of storage
The initial impedance value R of circuit0。
Step 102, the current real impedance values of the charging circuit are obtained.
In embodiments of the present invention, it when being charged by charger for the battery in mobile terminal, obtains fill in real time
The current real impedance values R of circuitA。
Referring to Fig. 2, the charging principle schematic diagram of the embodiment of the present invention is shown.
In the terminal, it is provided with the charging interface connecting with charger, (Universal Serial Bus leads to USB
With universal serial bus) switch, PMI (Power Management Integrated Circuit, power management chip), AP
(Application Processor, application processor) and MCU (Micro Control Unit, microcontroller), charging interface
VBUS connect with power management chip.
In the charging interface for the charging cable insertion mobile terminal that will be connect with charger, the D+/D- short circuit at charger end
Together, the D+/D- of mobile terminal side connects application processor and power management chip simultaneously, and power management chip is for detecting
Whether the peripheral hardware being inserted at charging interface is charger, specifically, when inputting predeterminated voltage to the D+ at charger end, such as
0.6V, if power management chip detects the voltage on the D+/D- of mobile terminal side also when being the predeterminated voltage, it is determined that insertion
Outer at charging interface is set as charger.
Determine insertion charging interface at it is outer be set as charger after, can by charger to the battery in mobile terminal into
Row fast charge switchs at this point, application processor sends CS (Chip Select, piece choosing) signal to USB, by application processor and electricity
The D+/D- access of source control chip and charging interface disconnects, and the D+/D- access of charging interface is connected on microcontroller,
Meanwhile the D+/D- at charger end is disconnected, so that the D+/D- at charger end no longer short circuit is together.
Then, microcontroller can send request instruction to charger, and request charger is specified to charging circuit input
Charging voltage and charging current, in addition, the microcontroller of mobile terminal side can detect the charging of charger by D+/D- access
Voltage value and charging current value, while by the output voltage values of voltage detecting circuit detection charging circuit, according to charger
The current reality of charging circuit is calculated in the output voltage values of charging voltage value, the charging current value of charger and charging circuit
Border impedance value.
It should be noted that the embodiment of the present invention, which remains unchanged, controls the D+/D- access of mobile terminal side under non-fast charge mode
Be connected on microcontroller, guarantee that mobile terminal can continue to test the charging voltage value and charging current value of charger, with
In the real impedance values of detection charging circuit.
Referring to Fig. 3, a kind of specific flow chart of charging method of the embodiment of the present invention is shown, Fig. 4 shows the present invention
The specific flow chart of another charging method of embodiment.
As shown in Figure 3 and Figure 4, step 102 can specifically include:
Sub-step 1021 obtains the charging current value and charging voltage value of the charger；
Sub-step 1022 obtains the output voltage values of the charging circuit；
Sub-step 1023, by the difference between the charging voltage value of the charger and the output voltage values of the charging circuit
Value obtains the current real impedance values of the charging circuit divided by the charging current value of the charger.
In embodiments of the present invention, under fast charge mode and non-fast charge mode, the D+/D- access of mobile terminal side is all connected with
To microcontroller, the microcontroller of mobile terminal side can detect the charging voltage value I of charger by D+/D- accessAWith
Charging current value UA, obtain the charging current value I of the charger detectedAWith charging voltage value UA。
In the settable voltage detecting circuit of the output end of charging circuit, the defeated of charging circuit is detected by voltage detecting circuit
Voltage value U outB, obtain the output voltage values U of the charging circuit detectedB。
By the charging voltage value U of chargerASubtract the output voltage values U of charging circuitB, obtain the charging voltage of charger
Value UAWith the output voltage values U of charging circuitBBetween difference, by the difference again divided by the charging current value I of chargerA, obtain
The current real impedance values R of charging circuitA, i.e. RA=(UA-UB)/IA。
For example, the charging voltage value U of chargerAFor 9V, the charging current value I of chargerAFor 3A, the output of charging circuit
Voltage value UBFor 7.8V, the real impedance values R current to charging circuit is calculatedAFor 400m Ω.
Step 103, according to the initial impedance value and the real impedance values, determine that the contact impedance at charging interface increases
It is value added.
In embodiments of the present invention, user may enter impurity at charging interface during using mobile terminal
Or foreign matter, chemical attack can occur at charging interface in charging, the contact impedance value at charging interface is caused to increase, contact resistance
Anti- value is the maximum place of change in impedance value of entire charging circuit, and the impedance value at other positions of charging circuit is relatively stable,
Therefore, according to the initial impedance value R of charging circuit0The real impedance values R current with charging circuitA, determine connecing at charging interface
Touch impedance value added RX。
As shown in Figure 3 and Figure 4, step 103 can specifically include:
The real impedance values are subtracted the initial impedance value by sub-step 1031, obtain the contact resistance at charging interface
Anti- value added.
By the current real impedance values R of charging circuitASubtract the initial impedance value R of charging circuit0, charging interface can be obtained
The contact impedance value added R at placeX。
For example, the initial impedance value R of charging circuit0For 200m Ω, the current real impedance values R of charging circuitAFor 400m
Ω, then the contact impedance value added R at charging interfaceXFor 200m Ω.
Step 104, according to the heat power consumption threshold value at the contact impedance value added and the charging interface, charging is adjusted
The charging current of device.
In embodiments of the present invention, the modeling at charging interface can be obtained by hot simulation process is carried out at charging interface
The corresponding heat power consumption threshold value P of the high temperature threshold value that glue melts awaymax。
According to contact impedance value added RXWith the heat power consumption threshold value P at charging interfacemax, dynamic regulation charger fills
Electric current, specifically, being to send charging current regulating command to charger by controlling the microcontroller of mobile terminal side, to adjust
The charging current for saving charger, so that the heat power consumption value at charging interface is consistently less than heat power consumption threshold value Pmax, so that it is guaranteed that filling
Be not in excess temperature at electrical interface and plastic cement is caused to melt away.
It should be noted that due to when not thering is impurity or foreign matter to enter charging interface, the initial impedance value of charging circuit
In initial contact impedance value be usually more than ten m Ω or so, and contact impedance value added is usually several hundred m Ω, therefore, ignores and fills
Influence of the initial contact impedance value to charging current in the initial impedance value of circuit according only to contact impedance value added and is filled
Heat power consumption threshold value at electrical interface, the charging current of dynamic regulation charger.
For example, the melting temperature of the plastic cement at general charging interface is 220 DEG C -250 DEG C, corresponding heat power consumption threshold value
It for 1W, is charged if being originally using the charging current of 3A, the heat power consumption value that contact impedance value added 200m Ω is generated is
1.8W is greater than heat power consumption threshold value 1W, at this point, charging current can be reduced to 2A, what contact impedance value added 200m Ω was generated
Heat power consumption value is 0.8W, is less than heat power consumption threshold value 1W, therefore, it can be ensured that be not in excess temperature at charging interface and lead to plastic cement
It melts away.
Under fast charge mode, the charging voltage value of charger can be steady state value, such as 9V, the charging voltage value of charger
It can be and dynamic regulation is carried out according to the voltage value of battery, the voltage value of usual battery is 3.5V-4.4V, the charging of charger
Voltage value is usual are as follows: the product of the charging current of the real impedance values and charger of charging circuit, along with 2 times of cell voltage
Value, therefore, the charging voltage value of charger changes between 7V-9V.
In actual application, as the electricity of battery increases, when the real impedance values of charging circuit are more than setting
When impedance threshold value, charger and mobile terminal can exit fast charge mode, at this point, the charging voltage value of charger maintains 5V,
Under the charging voltage of 5V, contact impedance value added is calculated according to the real impedance values of charging circuit and initial impedance value,
And the charging current of charger is adjusted according to contact impedance value added and heat power consumption threshold value, to ensure under non-fast charge mode,
Excess temperature will not occur at charging interface and plastic cement is caused to melt away, guarantee the safety of charging interface.
As shown in figure 3, step 104 can specifically include:
Sub-step 1041 obtains the contact impedance and increases according to the mapping relations between impedance ranges and charging current value
Value added corresponding target charge current value；
Sub-step 1042 adjusts the charging current of charger according to the target charge current value.
In an embodiment of the present invention, multiple impedance ranges are divided in advance, according to the maximum in each impedance ranges
Heat power consumption threshold value P at impedance value and charging interfacemax, the corresponding charging current value of the impedance ranges is calculated, to be hindered
Mapping relations between anti-range and charging current value；Wherein, the corresponding impedance ranges of each charging current value, and based on every
Any impedance value in a impedance ranges is respectively less than at charging interface with the heat power consumption value that corresponding charging current value is calculated
Heat power consumption threshold value Pmax。
According to the mapping relations between impedance ranges and charging current value, contact impedance value added R is obtainedXCorresponding target
Charging current value.
For example, the mapping relations between impedance ranges and charging current value are as shown in following table one:
| Impedance ranges | Charging current value |
| [R1, R2] | I1 |
| [R2, R3] | I2 |
| [R3, R4] | I3 |
| [R4, R5] | I4 |
Table one
Wherein, charging current value I1Square with impedance ranges [R1, R2] in any impedance value product, respectively less than fill
Heat power consumption threshold value P at electrical interfacemax, charging current value I2Square with impedance ranges [R2, R3] in any impedance value
Product, the heat power consumption threshold value P respectively less than at charging interfacemax, charging current value I3Square with impedance ranges [R3, R4] in
The product of any impedance value, the heat power consumption threshold value P respectively less than at charging interfacemax, charging current value I4Square with impedance model
Enclose [R4, R5] in any impedance value product, the heat power consumption threshold value P respectively less than at charging interfacemax。
For example, the contact impedance value added R at charging interfaceXFor 200m Ω, it is located at impedance ranges [R2, R3] between
When, then obtain contact impedance value added RXCorresponding target charge current value is I2。
Then, according to target charge current value, the microcontroller for controlling mobile terminal side sends charging current to charger
Regulating command, to adjust the charging current of charger.
By the mapping relations between impedance ranges and charging current value, the corresponding mesh of contact impedance value added is directly acquired
Charging current value is marked, adjusts the charging current of charger more quickly, further increases the safety of charging interface, is reduced because filling
The charging current of electric appliance is adjusted not in time, leads to the risk that excess temperature causes plastic cement to melt away at charging interface.
As shown in figure 4, step 104 can specifically include:
Heat power consumption threshold value at the charging interface is subtracted default heat power consumption value by sub-step 1043, obtains target heat
Power consumption number；
Sub-step 1044 obtains pair by the target heat power consumption value divided by evolution is carried out after the contact impedance value added
The target charge current value answered；
Sub-step 1045 adjusts the charging current of charger according to the target charge current value.
In another embodiment of the invention, the contact impedance value added R at charging interface is calculatedXAfterwards, it will fill
Heat power consumption threshold value P at electrical interfacemaxSubtract default heat power consumption value P0, obtain target heat power consumption value PX, then, by target hot merit
Consumption value PXDivided by contact impedance value added RXAfter carry out evolution, obtain corresponding target charge current value IX, i.e. IX=(PX/RX)1/2
=[(Pmax-P0)/RX]1/2, according to the target charge current value I calculatedX, the microcontroller of mobile terminal side is controlled to charging
Device sends charging current regulating command, to adjust the charging current of charger.
Wherein, heat power consumption value P is preset0It for positive number, can be manually set according to the actual situation, with the target for ensuring to be calculated
Charging current value IXSquare with contact impedance value added RXProduct be less than heat power consumption threshold value Pmax。
By calculating target charge current value in real time, and according to the target charge current value being calculated, more accurately adjust
The maximization of charging current may be implemented while guaranteeing the safety of charging interface in the charging current for saving charger, improves
The charging rate of mobile terminal.
In embodiments of the present invention, by obtaining the initial impedance value of charging circuit, the current reality of charging circuit is obtained
Impedance value determines the contact impedance value added at charging interface, according to contact impedance according to initial impedance value and real impedance values
Heat power consumption threshold value at value added and charging interface, adjusts the charging current of charger.By charging in detection charging process
The real impedance values of circuit are compared with the initial impedance value of charging circuit, can calculate the contact impedance at charging interface
Value added, according to the heat power consumption thresholding at contact impedance value added and charging interface, the charging current of dynamic regulation charger makes
It obtains the heat power consumption value at charging interface and is consistently less than heat power consumption threshold value, so that it is guaranteed that being not in excess temperature at charging interface and leading
Plastic cement is caused to melt away, and the detection accuracy of contact impedance value added is high, therefore, can more accurately protect the safety of charging interface, drops
The crash rate of low charging interface.
Referring to Fig. 5, a kind of structural block diagram of mobile terminal of the embodiment of the present invention is shown.
The mobile terminal 500 includes:
Initial impedance value obtains module 501, for obtaining the initial impedance value of charging circuit；
Real impedance values obtain module 502, for obtaining the current real impedance values of the charging circuit；
Contact impedance value added determining module 503, for determining according to the initial impedance value and the real impedance values
Contact impedance value added at charging interface；
Charging current adjustment module 504, for according to the hot merit at the contact impedance value added and the charging interface
Threshold value is consumed, the charging current of charger is adjusted.
Referring to Fig. 6, the structural block diagram of another mobile terminal of the embodiment of the present invention is shown.
On the basis of Fig. 5, optionally, the charging current adjustment module 504, comprising:
Charging current value acquisition submodule 5041, for according to the mapping relations between impedance ranges and charging current value,
Obtain the corresponding target charge current value of the contact impedance value added；
Charging current first adjusts submodule 5042, for adjusting filling for charger according to the target charge current value
Electric current；
Wherein, the corresponding impedance ranges of each charging current value, and based on any impedance value in each impedance ranges
The heat power consumption threshold value being respectively less than with the heat power consumption value that corresponding charging current value is calculated at the charging interface.
Optionally, the charging current adjustment module 504, comprising:
Target heat power consumption value computational submodule 5043, it is default for subtracting the heat power consumption threshold value at the charging interface
Heat power consumption value obtains target heat power consumption value；
Charging current value computational submodule 5044 is used for the target heat power consumption value divided by the contact impedance value added
After carry out evolution, obtain corresponding target charge current value；
Charging current second adjusts submodule 5045, for adjusting filling for charger according to the target charge current value
Electric current.
Optionally, the real impedance values obtain module 502, comprising:
Charging current voltage value acquisition submodule 5021, for obtaining the charging current value and charging voltage of the charger
Value；
Output voltage values acquisition submodule 5022, for obtaining the output voltage values of the charging circuit；
Real impedance values computational submodule 5023, for by the charging voltage value of the charger and the charging circuit
Difference between output voltage values obtains the current practical impedance of the charging circuit divided by the charging current value of the charger
Value.
Optionally, the contact impedance value added determining module 503, comprising:
Contact impedance value added computational submodule 5031, for the real impedance values to be subtracted the initial impedance value,
Obtain the contact impedance value added at charging interface.
Mobile terminal provided in an embodiment of the present invention can be realized mobile terminal in the embodiment of the method for Fig. 1 to Fig. 4 and realize
Each process, to avoid repeating, which is not described herein again.
In embodiments of the present invention, by obtaining the initial impedance value of charging circuit, the current reality of charging circuit is obtained
Impedance value determines the contact impedance value added at charging interface, according to contact impedance according to initial impedance value and real impedance values
Heat power consumption threshold value at value added and charging interface, adjusts the charging current of charger.By charging in detection charging process
The real impedance values of circuit are compared with the initial impedance value of charging circuit, can calculate the contact impedance at charging interface
Value added, according to the heat power consumption thresholding at contact impedance value added and charging interface, the charging current of dynamic regulation charger makes
It obtains the heat power consumption value at charging interface and is consistently less than heat power consumption threshold value, so that it is guaranteed that being not in excess temperature at charging interface and leading
Plastic cement is caused to melt away, and the detection accuracy of contact impedance value added is high, therefore, can more accurately protect the safety of charging interface, drops
The crash rate of low charging interface.
Referring to Fig. 7, the hardware structural diagram of the mobile terminal of the embodiment of the present invention is shown.
The mobile terminal 700 includes but is not limited to: radio frequency unit 701, network module 702, audio output unit 703, defeated
Enter unit 704, sensor 705, display unit 706, user input unit 707, interface unit 708, memory 709, processor
The components such as 710 and power supply 711.It will be understood by those skilled in the art that mobile terminal structure shown in Fig. 7 is not constituted
Restriction to mobile terminal, mobile terminal may include than illustrating more or fewer components, perhaps combine certain components or
Different component layouts.In embodiments of the present invention, mobile terminal include but is not limited to mobile phone, tablet computer, laptop,
Palm PC, car-mounted terminal, wearable device and pedometer etc..
Wherein, processor 710, for obtaining the initial impedance value of charging circuit；Obtain the current reality of the charging circuit
Border impedance value；According to the initial impedance value and the real impedance values, the contact impedance value added at charging interface is determined；Root
According to the heat power consumption threshold value at the contact impedance value added and the charging interface, the charging current of charger is adjusted.
In embodiments of the present invention, by obtaining the initial impedance value of charging circuit, the current reality of charging circuit is obtained
Impedance value determines the contact impedance value added at charging interface, according to contact impedance according to initial impedance value and real impedance values
Heat power consumption threshold value at value added and charging interface, adjusts the charging current of charger.By charging in detection charging process
The real impedance values of circuit are compared with the initial impedance value of charging circuit, can calculate the contact impedance at charging interface
Value added, according to the heat power consumption thresholding at contact impedance value added and charging interface, the charging current of dynamic regulation charger makes
It obtains the heat power consumption value at charging interface and is consistently less than heat power consumption threshold value, so that it is guaranteed that being not in excess temperature at charging interface and leading
Plastic cement is caused to melt away, and the detection accuracy of contact impedance value added is high, therefore, can more accurately protect the safety of charging interface, drops
The crash rate of low charging interface.
It should be understood that the embodiment of the present invention in, radio frequency unit 701 can be used for receiving and sending messages or communication process in, signal
Send and receive, specifically, by from base station downlink data receive after, to processor 710 handle；In addition, by uplink
Data are sent to base station.In general, radio frequency unit 701 includes but is not limited to antenna, at least one amplifier, transceiver, coupling
Device, low-noise amplifier, duplexer etc..In addition, radio frequency unit 701 can also by wireless communication system and network and other set
Standby communication.
Mobile terminal provides wireless broadband internet by network module 702 for user and accesses, and such as user is helped to receive
It sends e-mails, browse webpage and access streaming video etc..
Audio output unit 703 can be received by radio frequency unit 701 or network module 702 or in memory 709
The audio data of storage is converted into audio signal and exports to be sound.Moreover, audio output unit 703 can also be provided and be moved
The relevant audio output of specific function that dynamic terminal 700 executes is (for example, call signal receives sound, message sink sound etc.
Deng).Audio output unit 703 includes loudspeaker, buzzer and receiver etc..
Input unit 704 is for receiving audio or video signal.Input unit 704 may include graphics processor
(Graphics Processing Unit, GPU) 7041 and microphone 7042, graphics processor 7041 is in video acquisition mode
Or the image data of the static images or video obtained in image capture mode by image capture apparatus (such as camera) carries out
Reason.Treated, and picture frame may be displayed on display unit 706.Through graphics processor 7041, treated that picture frame can be deposited
Storage is sent in memory 709 (or other storage mediums) or via radio frequency unit 701 or network module 702.Mike
Wind 7042 can receive sound, and can be audio data by such acoustic processing.Treated audio data can be
The format output that mobile communication base station can be sent to via radio frequency unit 701 is converted in the case where telephone calling model.
Mobile terminal 700 further includes at least one sensor 705, such as optical sensor, motion sensor and other biographies
Sensor.Specifically, optical sensor includes ambient light sensor and proximity sensor, wherein ambient light sensor can be according to environment
The light and shade of light adjusts the brightness of display panel 7061, and proximity sensor can close when mobile terminal 700 is moved in one's ear
Display panel 7061 and/or backlight.As a kind of motion sensor, accelerometer sensor can detect in all directions (general
For three axis) size of acceleration, it can detect that size and the direction of gravity when static, can be used to identify mobile terminal posture (ratio
Such as horizontal/vertical screen switching, dependent game, magnetometer pose calibrating), Vibration identification correlation function (such as pedometer, tap)；It passes
Sensor 705 can also include fingerprint sensor, pressure sensor, iris sensor, molecule sensor, gyroscope, barometer, wet
Meter, thermometer, infrared sensor etc. are spent, details are not described herein.
Display unit 706 is for showing information input by user or being supplied to the information of user.Display unit 706 can wrap
Display panel 7061 is included, liquid crystal display (Liquid Crystal Display, LCD), Organic Light Emitting Diode can be used
Forms such as (Organic Light-Emitting Diode, OLED) configure display panel 7061.
User input unit 707 can be used for receiving the number or character information of input, and generate the use with mobile terminal
Family setting and the related key signals input of function control.Specifically, user input unit 707 include touch panel 7071 and
Other input equipments 7072.Touch panel 7071, also referred to as touch screen collect the touch operation of user on it or nearby
(for example user uses any suitable objects or attachment such as finger, stylus on touch panel 7071 or in touch panel 7071
Neighbouring operation).Touch panel 7071 may include both touch detecting apparatus and touch controller.Wherein, touch detection
Device detects the touch orientation of user, and detects touch operation bring signal, transmits a signal to touch controller；Touch control
Device processed receives touch information from touch detecting apparatus, and is converted into contact coordinate, then gives processor 710, receiving area
It manages the order that device 710 is sent and is executed.Furthermore, it is possible to more using resistance-type, condenser type, infrared ray and surface acoustic wave etc.
Seed type realizes touch panel 7071.In addition to touch panel 7071, user input unit 707 can also include other input equipments
7072.Specifically, other input equipments 7072 can include but is not limited to physical keyboard, function key (such as volume control button,
Switch key etc.), trace ball, mouse, operating stick, details are not described herein.
Further, touch panel 7071 can be covered on display panel 7061, when touch panel 7071 is detected at it
On or near touch operation after, send processor 710 to determine the type of touch event, be followed by subsequent processing device 710 according to touching
The type for touching event provides corresponding visual output on display panel 7061.Although in Fig. 7, touch panel 7071 and display
Panel 7061 is the function that outputs and inputs of realizing mobile terminal as two independent components, but in some embodiments
In, can be integrated by touch panel 7071 and display panel 7061 and realize the function that outputs and inputs of mobile terminal, it is specific this
Place is without limitation.
Interface unit 708 is the interface that external device (ED) is connect with mobile terminal 700.For example, external device (ED) may include having
Line or wireless head-band earphone port, external power supply (or battery charger) port, wired or wireless data port, storage card end
Mouth, port, the port audio input/output (I/O), video i/o port, earphone end for connecting the device with identification module
Mouthful etc..Interface unit 708 can be used for receiving the input (for example, data information, electric power etc.) from external device (ED) and
By one or more elements that the input received is transferred in mobile terminal 700 or can be used in 700 He of mobile terminal
Data are transmitted between external device (ED).
Memory 709 can be used for storing software program and various data.Memory 709 can mainly include storing program area
The storage data area and, wherein storing program area can (such as the sound of application program needed for storage program area, at least one function
Sound playing function, image player function etc.) etc.；Storage data area can store according to mobile phone use created data (such as
Audio data, phone directory etc.) etc..In addition, memory 709 may include high-speed random access memory, it can also include non-easy
The property lost memory, a for example, at least disk memory, flush memory device or other volatile solid-state parts.
Processor 710 is the control centre of mobile terminal, utilizes each of various interfaces and the entire mobile terminal of connection
A part by running or execute the software program and/or module that are stored in memory 709, and calls and is stored in storage
Data in device 709 execute the various functions and processing data of mobile terminal, to carry out integral monitoring to mobile terminal.Place
Managing device 710 may include one or more processing units；Preferably, processor 710 can integrate application processor and modulatedemodulate is mediated
Manage device, wherein the main processing operation system of application processor, user interface and application program etc., modem processor is main
Processing wireless communication.It is understood that above-mentioned modem processor can not also be integrated into processor 710.
Mobile terminal 700 can also include the power supply 711 (such as battery) powered to all parts, it is preferred that power supply 711
Can be logically contiguous by power-supply management system and processor 710, to realize management charging by power-supply management system, put
The functions such as electricity and power managed.
In addition, mobile terminal 700 includes some unshowned functional modules, details are not described herein.
Preferably, the embodiment of the present invention also provides a kind of mobile terminal, including processor 710, and memory 709 is stored in
On memory 709 and the computer program that can run on the processor 710, the computer program are executed by processor 710
Each process of the above-mentioned charging method embodiment of Shi Shixian, and identical technical effect can be reached, to avoid repeating, here no longer
It repeats.
The embodiment of the present invention also provides a kind of computer readable storage medium, and meter is stored on computer readable storage medium
Calculation machine program, the computer program realize each process of above-mentioned charging method embodiment when being executed by processor, and can reach
Identical technical effect, to avoid repeating, which is not described herein again.Wherein, the computer readable storage medium is deposited Ru read-only
Reservoir (Read-Only Memory, abbreviation ROM), random access memory (Random Access Memory, abbreviation RAM),
Magnetic or disk etc..
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or the device that include a series of elements not only include those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or device institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do
There is also other identical elements in the process, method of element, article or device.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can be realized by means of software and necessary general hardware platform, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on this understanding, technical solution of the present invention substantially in other words does the prior art
The part contributed out can be embodied in the form of software products, which is stored in a storage medium
In (such as ROM/RAM, magnetic disk, CD), including some instructions are used so that a terminal (can be mobile phone, computer, service
Device, air conditioner or network equipment etc.) execute method described in each embodiment of the present invention.
The embodiment of the present invention is described with above attached drawing, but the invention is not limited to above-mentioned specific
Embodiment, the above mentioned embodiment is only schematical, rather than restrictive, those skilled in the art
Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very much
Form belongs within protection of the invention.
Claims (10)
1. a kind of charging method characterized by comprising
Obtain the initial impedance value of charging circuit；
Obtain the current real impedance values of the charging circuit；
According to the initial impedance value and the real impedance values, the contact impedance value added at charging interface is determined；
According to the heat power consumption threshold value at the contact impedance value added and the charging interface, the charging electricity of charger is adjusted
Stream.
2. the method according to claim 1, wherein described according to the contact impedance value added and the charging
The heat power consumption threshold value of interface, adjusts the charging current of charger, comprising:
According to the mapping relations between impedance ranges and charging current value, obtains the corresponding target of the contact impedance value added and fill
Electric current value；
According to the target charge current value, the charging current of charger is adjusted；
Wherein, the corresponding impedance ranges of each charging current value, and based in each impedance ranges any impedance value with it is right
The heat power consumption value that the charging current value answered is calculated is respectively less than the heat power consumption threshold value at the charging interface.
3. the method according to claim 1, wherein described according to the contact impedance value added and the charging
The heat power consumption threshold value of interface, adjusts the charging current of charger, comprising:
Heat power consumption threshold value at the charging interface is subtracted into default heat power consumption value, obtains target heat power consumption value；
By the target heat power consumption value divided by evolution is carried out after the contact impedance value added, corresponding target charge current is obtained
Value；
According to the target charge current value, the charging current of charger is adjusted.
4. the method according to claim 1, wherein described obtain the current practical impedance of the charging circuit
Value, comprising:
Obtain the charging current value and charging voltage value of the charger；
Obtain the output voltage values of the charging circuit；
By the difference between the charging voltage value of the charger and the output voltage values of the charging circuit divided by the charging
The charging current value of device obtains the current real impedance values of the charging circuit.
5. the method according to claim 1, wherein described according to the initial impedance value and the practical impedance
Value, determines the contact impedance value added at charging interface, comprising:
The real impedance values are subtracted into the initial impedance value, obtain the contact impedance value added at charging interface.
6. a kind of mobile terminal characterized by comprising
Initial impedance value obtains module, for obtaining the initial impedance value of charging circuit；
Real impedance values obtain module, for obtaining the current real impedance values of the charging circuit；
Contact impedance value added determining module, for determining charging according to the initial impedance value and the real impedance values
Contact impedance value added at mouthful；
Charging current adjustment module, for according to the heat power consumption thresholding at the contact impedance value added and the charging interface
Value, adjusts the charging current of charger.
7. mobile terminal according to claim 6, which is characterized in that the charging current adjustment module, comprising:
Charging current value acquisition submodule, for according to the mapping relations between impedance ranges and charging current value, described in acquisition
The corresponding target charge current value of contact impedance value added；
Charging current first adjusts submodule, for adjusting the charging current of charger according to the target charge current value；
Wherein, the corresponding impedance ranges of each charging current value, and based in each impedance ranges any impedance value with it is right
The heat power consumption value that the charging current value answered is calculated is respectively less than the heat power consumption threshold value at the charging interface.
8. mobile terminal according to claim 6, which is characterized in that the charging current adjustment module, comprising:
Target heat power consumption value computational submodule, for the heat power consumption threshold value at the charging interface to be subtracted default heat power consumption
Value, obtains target heat power consumption value；
Charging current value computational submodule, for by the target heat power consumption value divided by being opened after the contact impedance value added
Side, obtains corresponding target charge current value；
Charging current second adjusts submodule, for adjusting the charging current of charger according to the target charge current value.
9. mobile terminal according to claim 6, which is characterized in that the real impedance values obtain module, comprising:
Charging current voltage value acquisition submodule, for obtaining the charging current value and charging voltage value of the charger；
Output voltage values acquisition submodule, for obtaining the output voltage values of the charging circuit；
Real impedance values computational submodule, for by the output voltage of the charging voltage value of the charger and the charging circuit
Difference between value obtains the current real impedance values of the charging circuit divided by the charging current value of the charger.
10. mobile terminal according to claim 6, which is characterized in that the contact impedance value added determining module, packet
It includes:
Contact impedance value added computational submodule is charged for the real impedance values to be subtracted the initial impedance value
The contact impedance value added of interface.
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| CN110829520A (en) * | 2019-10-28 | 2020-02-21 | 量道（厦门）新能源科技有限公司 | Charging connection reliability detection and charging control circuit and method |
| CN111293744A (en) * | 2020-01-22 | 2020-06-16 | 维沃移动通信有限公司 | Charging method, charging device, electronic device, and medium |
| CN112311035A (en) * | 2019-07-31 | 2021-02-02 | 北京小米移动软件有限公司 | Charging control method, charging control device and readable storage medium |
| CN112319300A (en) * | 2020-10-16 | 2021-02-05 | 江苏爱玛车业科技有限公司 | Intelligent charger and intelligent charging management method thereof |
| WO2022001617A1 (en) * | 2020-06-28 | 2022-01-06 | 中兴通讯股份有限公司 | Charging method, terminal and storage medium |
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| CN109962514B (en) | 2021-01-08 |
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