CN108347033A - A kind of method and mobile terminal, charging equipment of charging interface protection - Google Patents
A kind of method and mobile terminal, charging equipment of charging interface protection Download PDFInfo
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- CN108347033A CN108347033A CN201710056825.9A CN201710056825A CN108347033A CN 108347033 A CN108347033 A CN 108347033A CN 201710056825 A CN201710056825 A CN 201710056825A CN 108347033 A CN108347033 A CN 108347033A
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- charging
- mobile terminal
- current value
- sampling resistor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
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Abstract
An embodiment of the present invention provides a kind of charging interface protection method and mobile terminal, charging equipment, wherein charging interface protection method include：The first current value of the first sampling resistor is obtained according to predetermined period, receive the second current value of the second sampling resistor on the power cord by charging apparatus interface that charging equipment reports, calculate the difference of the first current value and the second current value, when current differential is more than predetermined threshold value, it is sent to charging equipment and stops charging instruction, charging equipment charges to mobile terminal according to charging instruction stopping is stopped, using the embodiment of the present invention, obtain the first current value and the second current value of the sampling resistor in the charging power cord of mobile terminal and charging equipment, when the current differential of the two exceeds predetermined threshold value, mobile terminal, which can be sent, stops charging instruction to charging equipment, charging equipment stops electric current output, it can effectively prevent the lasting generation of short circuit, charging interface is avoided to be burned, it ensure that charging safety.
Description
Technical field
The present invention relates to field of communication technology, a kind of method protected more particularly, to charging interface and mobile terminal fill
Electric equipment.
Background technology
With the development of electronic technology and the communication technology, Mobile Communication Industry is quickly grown, and mobile terminal has become people
Routine work, life necessary article.
Using band USB (Universal Serial Bus, universal serial bus) interface (including USB connector) output
Charging equipment charges to mobile device, becomes main charging connection mode.With USB interface pin increase and
The micromation of USB interface, the interval between pin and pin is smaller and smaller, for example, USB interface VBus (i.e.：USB voltages) with
The distance between D- or GND (ground connection) very little, when there is conductive foreign matter to enter interface internal, can cause VBus and D- or
GND short circuits.
Charging equipment uses short-circuit protection at present, is normally located on the out-put supply pin VBus at USB interface, when
When the upper electric currents of VBus are more than defined short circuit current range, charging equipment cut-out output, to protect USB.But when VBus with
When D- GND short circuits, only the current reduction on VBus can not can be triggered short-circuit protection function or to be charged be set
It is standby.Such as VBus and D- or the GND short circuit of the USB interface of mobile terminal, the VBus electric currents of the USB interface of charging equipment are not
It can change, therefore, in above-mentioned two situations, VBus and D- GND short circuits can continue to occur, and then generate heat,
Charging interface is burnt out, security risk is caused.
Invention content
The embodiment of the present invention proposes a kind of method and mobile terminal, charging equipment of charging interface protection, to solve mesh
Preceding VBus and D+ either D- or GND short circuits, and then heat is generated, the problem of burning out charging interface, cause security risk.
In a first aspect, an embodiment of the present invention provides a kind of method of charging interface protection, it is applied to mobile terminal, it is described
The power cord of the charging interface of mobile terminal is connected with the first sampling resistor, and the charging equipment is equipped with the second sampling resistor,
The method includes：
In charging process, the first current value of first sampling resistor is obtained according to predetermined period；
The second current value that charging equipment reports is received, second current value is the electric current by the second sampling resistor
Value；Wherein, the resistance value of first sampling resistor and the second sampling resistor is equal；
The difference for calculating first current value and second current value, obtains current differential；
Judge whether the current differential is more than predetermined threshold value；
Stop charging instruction if so, being sent to the charging equipment, the charging equipment refers to according to stopping charging
It enables and stops charging to the mobile terminal.
Second aspect provides a kind of method of charging interface protection, is applied to charging equipment, the charging equipment fills
The power cord of electrical interface is connected with the second sampling resistor, the method includes：
In charging process, the second current value of second sampling resistor is obtained according to predetermined period；
Second current value is sent to the mobile terminal；
When receiving the stopping charging instruction that the mobile terminal is sent, stopping charges to the mobile terminal.
The third aspect, provides a kind of mobile terminal, and the power cord of the charging interface of the mobile terminal is connected with first
Sampling resistor, the mobile terminal include：
First current value acquisition module, in charging process, first sampling resistor to be obtained according to predetermined period
First current value；
Second current value receiving module, the second current value reported for receiving charging equipment, second current value are
Pass through the current value of the second sampling resistor on charging equipment；Wherein, the electricity of first sampling resistor and the second sampling resistor
Resistance value is equal；
Current differential computing module, the difference for calculating first current value and second current value, obtains electricity
Flow difference；
Current differential judgment module, for judging whether the current differential is more than predetermined threshold value；
Stop charging instruction sending module, stops charging instruction, the charging equipment for being sent to the charging equipment
Stop charging to the mobile terminal according to the stopping charging instruction.
Fourth aspect, provides a kind of charging equipment, and the power cord of the charging interface of the charging equipment is connected with second
Sampling resistor, the charging equipment include：
Second current value acquisition module, in charging process, second sampling resistor to be obtained according to predetermined period
Second current value；
Second current value sending module, for second current value to be sent to the mobile terminal；
Stop charging module, for when receiving the stopping charging instruction that the mobile terminal is sent, stopping to described
Mobile terminal charges.
In embodiments of the present invention, the power cord of the charging interface of mobile terminal is connected with the first sampling resistor, is charging
In the process, the first current value of the first sampling resistor is obtained according to predetermined period, what reception charging equipment reported is set by charging
Second current value of the second sampling resistor on the power cord of standby interface；The difference of the first current value and the second current value is calculated,
Current differential is obtained, when current differential is more than predetermined threshold value, is sent to charging equipment and stops charging instruction, charging equipment foundation
Stop charging instruction stopping to charge to mobile terminal, it, can be in charging equipment and mobile terminal using the embodiment of the present invention
In charging process, the first current value and the second electricity of the sampling resistor in the charging power cord of mobile terminal and charging equipment are obtained
Flow valuve illustrates that charging interface has short circuit, mobile terminal can send stopping when the current differential of the two exceeds predetermined threshold value
For charging instruction to charging equipment, charging equipment stops electric current output, can effectively prevent the lasting generation of short circuit, avoid charging
Mouth is burned, and ensure that charging safety.
Description of the drawings
Fig. 1 is a kind of step flow chart of the method for charging interface protection of the embodiment of the present invention one；
Fig. 2 is a kind of step flow chart of the method for charging interface protection of the embodiment of the present invention two；
Fig. 3 is a kind of step flow chart of the method for charging interface protection of the embodiment of the present invention three；
Fig. 4 is a kind of circuit diagram of the method for charging interface protection of the present invention；
Fig. 5 is a kind of exemplary flow chart of the method for charging interface protection of the present invention；
Fig. 6 is a kind of one of the structure diagram of mobile terminal of the embodiment of the present invention four；
Fig. 6 a are the two of the structure diagram of a kind of mobile terminal of the embodiment of the present invention four；
Fig. 6 b are the three of the structure diagram of a kind of mobile terminal of the embodiment of the present invention four；
Fig. 7 is a kind of structure diagram of charging equipment of the embodiment of the present invention five；
Fig. 8 is a kind of structure diagram of mobile terminal of the embodiment of the present invention six；
Fig. 9 is a kind of structural schematic diagram of mobile terminal of the embodiment of the present invention seven.
Specific implementation mode
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, below in conjunction with the accompanying drawings and specific real
Applying mode, the present invention is described in further detail.
Embodiment one
Fig. 1 is a kind of step flow chart of the method for charging interface protection of the embodiment of the present invention one.
Shown in referring to Fig.1, a kind of method of charging interface protection of the embodiment of the present invention is applied to mobile terminal, mobile
The power cord of the charging interface of terminal is connected with the first sampling resistor, and this method includes：
Step 101, in charging process, the first current value of first sampling resistor is obtained according to predetermined period.
In the embodiment of the present invention, mobile terminal and charging equipment can pass through the interfaces phase such as USB2.0, USB3.0, Type-C
Even.Charging interface can be provided with VBus, D-, D+, GND.Wherein VBus lines are the power cords of power supply, can be in concrete application
The first sampling resistor is in series with after the VBus pins of mobile terminal, the first sampling resistor can be arranged smaller, not shadow
Ring the efficiency of charging.
In practical applications, the first current value of the first sampling resistor can be acquired according to predetermined period, predetermined period can
To be arranged according to actual conditions, the embodiment of the present invention is without limitation.
Step 102, the second current value that charging equipment reports is received, second current value is to be sampled by described second
The current value of resistance；Wherein, the resistance value of first sampling resistor and the second sampling resistor is equal.
In the embodiment of the present invention, whether the charging interface in order to detect charging equipment or mobile terminal is short-circuit,
The second sampling resistor, the electricity of the first sampling resistor and the second sampling resistor can be in series with after the VBus pins of charging equipment
Resistance value is equal.Second current value of the second sampling resistor is obtained by charging equipment and is sent to mobile terminal, mobile terminal receives
The second current value that charging equipment reports.
Step 103, the difference for calculating first current value and second current value, obtains current differential.
After the second current value of the first current value of acquisition for mobile terminal and reception, calculating difference, specifically, the second electricity can be used
Flow valuve subtracts the first current value, obtains current differential.
Step 104, judge whether the current differential is more than predetermined threshold value, if so, thening follow the steps 105.
In practical applications, there are other factors for influencing current value, such as voltage between mobile terminal and charging equipment
Current floating caused by unstable, wire rod resistance value etc. caused by this is not short circuit, therefore can pre-set threshold value, only
Have and can be determined that charging interface sends short circuit when current differential is more than predetermined threshold value.Therefore, it is necessary to judge that current differential is
It is no to be more than predetermined threshold value, if so, thening follow the steps 105.
Step 105, it is sent to the charging equipment and stops charging instruction, the charging equipment refers to according to stopping charging
It enables and stops charging to the mobile terminal.
When current differential is more than predetermined threshold value, it may be said that the charging interface of bright charging equipment or mobile terminal occurs short
Road.The heat that short circuit generates in order to prevent burns out charging interface, and mobile terminal is sent to charging equipment stops charging instruction, charging
After equipment receives stopping charging instruction, stopping charges to mobile terminal.
In embodiments of the present invention, the power cord of the charging interface of mobile terminal is connected with the first sampling resistor, is charging
In the process, the first current value of the first sampling resistor is obtained according to predetermined period, what reception charging equipment reported is set by charging
Second current value of the second sampling resistor on the power cord of standby interface；The difference of the first current value and the second current value is calculated,
Current differential is obtained, when current differential is more than predetermined threshold value, is sent to charging equipment and stops charging instruction, charging equipment foundation
Stop charging instruction stopping to charge to mobile terminal.It, can be in charging equipment and mobile terminal using the embodiment of the present invention
In charging process, the first current value and the second electricity of the sampling resistor in the charging power cord of mobile terminal and charging equipment are obtained
Flow valuve illustrates that charging interface has short circuit, mobile terminal can send stopping when the current differential of the two exceeds predetermined threshold value
For charging instruction to charging equipment, charging equipment stops electric current output, can effectively prevent the lasting generation of short circuit, avoid charging
Mouth is burned, and ensure that charging safety.
Embodiment two
Fig. 2 is a kind of step flow chart of the method for charging interface protection of the embodiment of the present invention two.
With reference to shown in Fig. 2, a kind of method of charging interface protection of the embodiment of the present invention is applied to mobile terminal, mobile
The power cord of the charging interface of terminal is connected with the first sampling resistor, and this method includes：
Step 201, in charging process, the first current value of first sampling resistor is obtained according to predetermined period.
In the embodiment of the present invention, mobile terminal and charging equipment can pass through the chargings such as USB2.0, USB3.0, TYPE C
Mouth is connected.Charging interface can be provided with VBus, D-, D+, GND.Wherein VBus lines are the power cords of power supply.In concrete application,
The first sampling resistor can be in series with after the VBus pins of mobile terminal, the first sampling resistor can be arranged smaller,
Do not influence the efficiency of charging.
In one preferred embodiment of the invention, first electric current that the first sampling resistor is acquired according to predetermined period
Value, i.e., step 201 may include following sub-step：
Sub-step 2011 obtains the voltage value of first sampling resistor according to predetermined period；
Sub-step 2012 calculates first current value according to the voltage value.
The usual very little of resistance value of first sampling resistor, does not interfere with charge efficiency, in practical applications, can be according to pre-
If the period obtains the voltage value at the first sampling resistor both ends, according to voltage value, the resistance value of the first sampling resistor calculates first
Current value.
Step 202, the second current value that charging equipment reports is received, second current value is to be sampled by described second
The current value of resistance；Wherein, the resistance value of first sampling resistor and the second sampling resistor is equal.
In the embodiment of the present invention, whether the charging interface in order to detect charging equipment or mobile terminal is short-circuit,
The second sampling resistor, the electricity of the first sampling resistor and the second sampling resistor can be in series with after the VBus pins of charging equipment
Resistance value is equal.Second current value of the second sampling resistor is obtained by charging equipment and is sent to mobile terminal, mobile terminal receives
The second current value that charging equipment reports.
In embodiments of the present invention, mobile terminal and charging equipment can pass through the chargings such as USB2.0, USB3.0, TYPE C
Interface is connected.Mobile terminal can be communicated by the signal wire and charging equipment of charging interface, such as be connect by signal wire
It receives the second current value and sends instruction etc. to charging equipment, signal wire can be D+, D-, RX1+, RX1, RX2+, RX2-, TX1
+, at least one of TX1-, TX2+, TX2-, SBU1, SBU2, CC1 and CC2.
Step 203, the difference for calculating first current value and second current value, obtains current differential.
After the second current value of the first current value of acquisition for mobile terminal and reception, the difference of the two is calculated.Specifically, can use
Second current value subtracts the first current value, obtains current differential.
Step 204, judge whether the current differential is more than predetermined threshold value, if so, thening follow the steps 205.
In practical applications, there are other factors for influencing current value, such as voltage between mobile terminal and charging equipment
Caused by this is not short circuit, therefore predetermined threshold value can be arranged in current floating caused by unstable, wire rod resistance value etc., only
Have and can be determined that short circuit occurs for charging interface when current differential is more than predetermined threshold value.In practical applications, charging equipment with
The current value of the VBus of mobile terminal is equal, when the VBus and D- or D+ or GND of charging equipment or mobile terminal short circuits
When, which can distribute the electric current of a part of VBus so that the current value of the sampling resistor of charging equipment and mobile terminal not phase
Deng.
Specifically, at charging equipment end, electric current is after the second sampling resistor, and output is whole to movement after being transmitted to VBus
End, if when the VBus and D- of the charging interface of charging equipment or D+ or GND short circuits, the second current value of the second sampling resistor
It is constant, but since short circuit is assigned with portion of electrical current so that output becomes smaller to the electric current of mobile terminal after VBus；In movement
Terminal, electric current after VBus by the first sampling resistor, due to short-circuit at the charging interface of charging equipment, the first sampling resistor
The first current value be less than the second current value, or mobile terminal charging interface VBus and D- or D+ or GND it is short-circuit
When, electric current has been short-circuited distribution portion electric current before reaching the first sampling resistor so that the first electric current of the first sampling resistor
Value is less than the second current value.Therefore, it is possible to judge that whether the current differential of the first current value and the second current value is more than default threshold
Value, if so, thening follow the steps 205.
Step 205, it is sent to the charging equipment and stops charging instruction, the charging equipment refers to according to stopping charging
It enables and stops charging to the mobile terminal.
When current differential is more than predetermined threshold value, it may be said that the charging interface of bright charging equipment or mobile terminal occurs short
Road, the heat that short circuit generates in order to prevent burn out charging interface, and mobile terminal is sent to charging equipment stops charging instruction, charging
After equipment receives stopping charging instruction, stopping charges to mobile terminal.
Step 206, charging exception information is generated.
When judging that current differential is more than predetermined threshold value, it may be said that charging occurs different between bright mobile terminal and charging equipment
Often, such as can be that charging equipment charging interface has the charging interface of short circuit or mobile terminal there are short circuit etc., it can be with
Charging exception information will be generated, which can be that text message form can also be alert icon etc., can be with
It is prompt tone, the embodiment of the present invention is without limitation.
Step 207, charge exception information described in the screen display of the mobile terminal.
When judge current differential be more than predetermined threshold value when, can the mobile terminal screen with text or icon etc.
Form display charging exception information is abnormal to remind user to occur.
In embodiments of the present invention, the power cord of the charging interface of mobile terminal is connected with the first sampling resistor, is charging
In the process, the first current value of the first sampling resistor is obtained according to predetermined period, what reception charging equipment reported is set by charging
Second current value of the second sampling resistor on the power cord of standby charging interface；Calculate the first current value and the second current value
Difference obtains current differential, when current differential is more than predetermined threshold value, is sent to charging equipment and stops charging instruction, charging is set
It is standby to charge to mobile terminal according to stopping charging instruction stopping, it, can be in charging equipment and shifting using the embodiment of the present invention
During dynamic terminal charge, obtain the sampling resistor in the charging power cord of mobile terminal and charging equipment the first current value and
Second current value illustrates that charging interface has short circuit, mobile terminal can be sent out when the current differential of the two exceeds predetermined threshold value
It send and stops charging instruction to charging equipment, charging equipment stops electric current output, can effectively prevent the lasting generation of short circuit, avoid
Charging interface is burned, and ensure that charging safety.
Further, when judging that current differential is more than predetermined threshold value, charging exception information is generated, in the screen of mobile terminal
Curtain display charging exception information, may remind the user that charging is abnormal, user can check charging interface or charging equipment in time
Deng the user experience is improved.
Embodiment three
Fig. 3 is a kind of step flow chart of the method for charging interface protection of the embodiment of the present invention three.
With reference to shown in Fig. 3, a kind of method of charging interface protection of the embodiment of the present invention is applied to charging equipment, described
The power cord of the charging interface of charging equipment is connected with the second sampling resistor, and this method includes：
Step 301, in charging process, the second current value of second sampling resistor is obtained according to predetermined period.
In the embodiment of the present invention, the second sampling resistor can be in series with after the VBus pins of charging equipment, second adopts
The resistance value of sample resistance and the first sampling resistor is equal.The second electric current of the second sampling resistor can be acquired according to predetermined period
Value, the cycle phase that the mobile terminal that predetermined period is attached thereto acquires the first current value are same.
Step 302, second current value is sent to the mobile terminal.
Charging equipment can be connected with mobile terminal by the interfaces such as USB2.0, USB3.0, TYPE C, and charging equipment can be with
It is communicated by the signal wire and mobile terminal of interface, such as the second current value is sent by signal wire and is received mobile whole
Hold the instruction etc. sent, signal wire can be D+, D-, RX1+, RX1, RX2+, RX2-, TX1+, TX1-, TX2+, TX2-, SBU1,
At least one of SBU2, CC1 and CC2.
Step 303, when receiving the stopping charging instruction that the mobile terminal is sent, stop to the mobile terminal into
Row charging.
When receiving the stopping charging instruction of mobile terminal transmission, charging equipment internal switch disconnects charging path, stops
Only charge to mobile terminal.
In embodiments of the present invention, charging equipment obtains the second sampling resistor in charging process according to predetermined period
Second current value is sent to mobile terminal by the second current value；When receiving the stopping charging instruction of mobile terminal transmission, stop
Only charge to mobile terminal.Using the embodiment of the present invention, charging equipment obtains the second current value of the second sampling resistor simultaneously
It is sent to the mobile terminal being attached thereto, determines that generation is short-circuit and makes stopping based on the second current value when receiving mobile terminal
When charging instruction, stopping charges to mobile terminal, effectively prevents the lasting generation of short circuit, avoids short circuit and burn out charging
Interface ensure that charging safety.
To make those skilled in the art more fully understand the embodiment of the present invention, use specific example for the present invention below
A kind of charging interface protection method illustrate.
Fig. 4 is a kind of circuit diagram of the method for charging interface protection of the embodiment of the present invention.
Fig. 4 includes charging equipment 401, mobile terminal 402, charging interface 403, the sampling of the first sampling resistor 404, second
Resistance 405.
First sampling resistor 404 is connected on the VBus lines of the charging interface 403 of mobile terminal 402, the second sampling resistor
405 are connected on the VBus lines of the charging interface 403 of charging equipment 401, when charging equipment or the charging interface of mobile terminal
For 403 VBus and D when either short circuit occurs for D- or GND, short circuit can distribute the portion of electrical current by VBus so that by the
First current value of one sampling resistor 404 changes, and can compare the first sampling resistor 404 and the second sampling resistor 405
Current value illustrates that charging interface 403 has short circuit, charging equipment 401 can stop pair if the two difference is more than predetermined threshold value
Mobile terminal 402 charges, and short circuit is avoided to burn out charging interface 403.
Fig. 5 is a kind of exemplary method flow diagram of charging interface protection of one of the present invention.
The example includes the following steps：
Step 501, charging equipment and mobile terminal charging connection.
Step 502, the first sampling resistor of mobile terminal timing acquiring both end voltage, calculates the first current value, and charging is set
Standby timing acquiring the second sampling resistor both end voltage, calculates the second current value；
Step 503, the second current value is sent to mobile terminal by charging equipment；
Step 504, mobile terminal judges the current differential of the second current value and the first current value whether in predetermined threshold value,
If then mobile phone continues to charge, if it is not, executing step 505.
Step 505, mobile terminal, which is sent, stops charging instruction to charging equipment, and charging equipment disconnects VBus power supplys, stops
Charging, while prompting user's charging exception information.
In conclusion a kind of method of charging interface protection provided by the invention, can be accomplished in several ways, it is aforementioned
Several ways are only to illustrate, and the embodiment of the present invention is not restricted this.
It should be noted that for embodiment of the method, for simple description, therefore it is all expressed as a series of action group
It closes, but those skilled in the art should understand that, the embodiment of the present invention is not limited by the described action sequence, because according to
According to the embodiment of the present invention, certain steps can be performed in other orders or simultaneously.Secondly, those skilled in the art also should
Know, embodiment described in this description belongs to preferred embodiment, and the involved action not necessarily present invention is implemented
Necessary to example.
Example IV
Fig. 6 is a kind of structure diagram of mobile terminal of the embodiment of the present invention four.
With reference to shown in Fig. 6, a kind of power cord of the charging interface of mobile terminal 600 provided in an embodiment of the present invention is connected with
First sampling resistor, mobile terminal 600 include：
First current value acquisition module 601, in charging process, first sampling resistor to be obtained according to predetermined period
The first current value；
Second current value receiving module 602, the second current value reported for receiving charging equipment, second current value
To pass through the current value of second sampling resistor；Wherein, the resistance value phase of first sampling resistor and the second sampling resistor
Deng；
Current differential computing module 603, the difference for calculating first current value and second current value, obtains
Current differential；
Current differential judgment module 604, for judging whether the current differential is more than predetermined threshold value；
Stop charging instruction sending module 605, stops charging instruction for being sent to the charging equipment, the charging is set
It is standby to stop charging to the mobile terminal according to the stopping charging instruction.
With reference to shown in Fig. 6 a, another mobile terminal 600 of the embodiment of the present invention further includes：
The exception information that charges generation module 606, for when judging that the current differential is more than predetermined threshold value, generating charging
Exception information；
The exception information that charges display module 607, for the exception information that charges described in the screen display in the mobile terminal.
With reference to shown in Fig. 6 b, in another mobile terminal 600 of the embodiment of the present invention, the first current value acquisition module 601 packet
It includes：
Voltage value acquisition submodule 6011, the voltage value for obtaining first sampling resistor；
First current value computational submodule 6012, for according to the voltage value, calculating first current value.
Mobile terminal can realize each process that mobile terminal is realized in the embodiment of the method for Fig. 1 to Fig. 2, to avoid weight
Multiple, which is not described herein again.
In embodiments of the present invention, the power cord of the charging interface of mobile terminal is connected with the first sampling resistor, is charging
In the process, the first current value of the first sampling resistor is obtained according to predetermined period, what reception charging equipment reported is set by charging
Second current value of the second sampling resistor on the power cord of standby interface；The difference of the first current value and the second current value is calculated,
Current differential is obtained, when current differential is more than predetermined threshold value, is sent to charging equipment and stops charging instruction, charging equipment foundation
Stop charging instruction stopping to charge to mobile terminal, it, can be in charging equipment and mobile terminal using the embodiment of the present invention
In charging process, the first current value and the second electricity of the sampling resistor in the charging power cord of mobile terminal and charging equipment are obtained
Flow valuve illustrates that charging interface has short circuit, mobile terminal can send stopping when the current differential of the two exceeds predetermined threshold value
For charging instruction to charging equipment, charging equipment stops electric current output, can effectively prevent the lasting generation of short circuit, avoid charging
Mouth is burned, and ensure that charging safety.
Further, when judging that current differential is more than predetermined threshold value, charging exception information is generated, in the screen of mobile terminal
Curtain display charging exception information, may remind the user that charging is abnormal, user can check charging interface or charging equipment in time
Deng the user experience is improved.
Embodiment five
Fig. 7 is a kind of structure diagram of charging equipment of the embodiment of the present invention five.
With reference to shown in Fig. 7, a kind of power cord of the charging interface of charging equipment 700 provided in an embodiment of the present invention is connected with
Second sampling resistor, charging equipment 700 include：
Second current value acquisition module 701, in charging process, second sampling resistor to be obtained according to predetermined period
The second current value；
Second current value sending module 702, for second current value to be sent to the mobile terminal；
Stop charging module 703, for when receiving the stopping charging instruction that the mobile terminal is sent, stopping to institute
State mobile terminal charging.
Charging equipment can realize each process that charging equipment is realized in the embodiment of the method for Fig. 3, to avoid repeating, this
In repeat no more.
In embodiments of the present invention, charging equipment obtains the second sampling resistor in charging process according to predetermined period
Second current value is sent to mobile terminal by the second current value；When receiving the stopping charging instruction of mobile terminal transmission, stop
Only charge to mobile terminal.Using the embodiment of the present invention, charging equipment obtains the second current value of the second sampling resistor simultaneously
It is sent to the mobile terminal being attached thereto, determines that generation is short-circuit and makes stopping based on the second current value when receiving mobile terminal
When charging instruction, stopping charges to mobile terminal, effectively prevents the lasting generation of short circuit, avoids short circuit and burn out charging
Interface ensure that charging safety.
Embodiment six
Fig. 8 is a kind of structure diagram for mobile terminal that the embodiment of the present invention six provides, mobile terminal 1000 shown in Fig. 8
Including：1004, at least one processor 1001, memory 1002, at least one network interface current sample components 1006
With user interface 1003.Various components in mobile terminal 1000 are coupled by bus system 1005.It is understood that bus
System 1005 is for realizing the connection communication between these components.Bus system 1005 further includes in addition to including data/address bus
Power bus, controlling bus and status signal bus in addition.But for the sake of clear explanation, various buses are all designated as in fig. 8
Bus system 1005.
Wherein, user interface 1003 may include display, keyboard or pointing device (for example, mouse, trace ball
(trackball), touch-sensitive plate or touch screen etc..
It is appreciated that the memory 1002 in the embodiment of the present invention can be volatile memory or non-volatile memories
Both device, or may include volatile and non-volatile memory.Wherein, nonvolatile memory can be read-only memory
(Read-Only Memory, ROM), programmable read only memory (Programmable ROM, PROM), erasable programmable are only
Read memory (Erasable PROM, EPROM), electrically erasable programmable read-only memory (Electrically EPROM,
) or flash memory EEPROM.Volatile memory can be random access memory (Random Access Memory, RAM), use
Make External Cache.By exemplary but be not restricted explanation, the RAM of many forms is available, such as static random-access
Memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random-access
Memory (Synchronous DRAM, SDRAM), double data speed synchronous dynamic RAM (Double Data
Rate SDRAM, DDRSDRAM), it is enhanced Synchronous Dynamic Random Access Memory (Enhanced SDRAM, ESDRAM), synchronous
Connect dynamic random access memory (Synchlink DRAM, SLDRAM) and direct rambus random access memory
(Direct Rambus RAM, DRRAM).The embodiment of the present invention description system and method memory 1002 be intended to include but
It is not limited to the memory of these and any other suitable type.
In some embodiments, memory 1002 stores following element, executable modules or data structures, or
Their subset of person or their superset：Operating system 10021 and application program 10022.
Wherein, operating system 10021, including various system programs, such as ccf layer, core library layer, driving layer etc., are used for
Realize various basic businesses and the hardware based task of processing.Application program 10022, including various application programs, such as matchmaker
Body player (Media Player), browser (Browser) etc., for realizing various applied business.Realize that the present invention is implemented
The program of example method may be embodied in application program 10022.
In embodiments of the present invention, by the program for calling memory 1002 to store or instruction, specifically, can be application
The program stored in program 10022 or instruction, processor 1001 are used in charging process, and described first is obtained according to predetermined period
First current value of sampling resistor, receives the second current value for reporting of charging equipment, and second current value is by described the
The current value of two sampling resistors；Wherein, the resistance value of first sampling resistor and the second sampling resistor is equal, calculates described the
The difference of one current value and second current value, obtains current differential, judges whether the current differential is more than predetermined threshold value,
Stop charging instruction if so, being sent to the charging equipment, the charging equipment according to the stopping charging instruction for stopping
Only charge to the mobile terminal.
The method that the embodiments of the present invention disclose can be applied in processor 1001, or real by processor 1001
It is existing.Processor 1001 may be a kind of IC chip, the processing capacity with signal.During realization, the above method
Each step can be completed by the instruction of the integrated logic circuit of the hardware in processor 1001 or software form.Above-mentioned
Processor 1001 can be general processor, digital signal processor (Digital Signal Processor, DSP), special
Integrated circuit (Application Specific Integrated Circuit, ASIC), ready-made programmable gate array (Field
Programmable Gate Array, FPGA) either other programmable logic device, discrete gate or transistor logic,
Discrete hardware components.It may be implemented or execute disclosed each method, step and the logic diagram in the embodiment of the present invention.It is general
Processor can be microprocessor or the processor can also be any conventional processor etc..In conjunction with institute of the embodiment of the present invention
The step of disclosed method, can be embodied directly in hardware decoding processor and execute completion, or with the hardware in decoding processor
And software module combination executes completion.Software module can be located at random access memory, and flash memory, read-only memory may be programmed read-only
In the storage medium of this fields such as memory or electrically erasable programmable memory, register maturation.The storage medium is located at
The step of memory 1002, processor 1001 reads the information in memory 1002, the above method is completed in conjunction with its hardware.
Current sample component 1006 is used to acquire the first current value by the sampling resistor on charging power cord VBus, and
First current value is sent to processor 1001.
It is understood that the embodiment of the present invention description these embodiments can use hardware, software, firmware, middleware,
Microcode or combinations thereof is realized.For hardware realization, processing unit may be implemented in one or more application-specific integrated circuits
(Application Specific Integrated Circuits, ASIC), digital signal processor (Digital Signal
Processing, DSP), digital signal processing appts (DSP Device, DSPD), programmable logic device (Programmable
Logic Device, PLD), field programmable gate array (Field-Programmable Gate Array, FPGA), general place
It manages in device, controller, microcontroller, microprocessor, other electronic units for executing herein described function or combinations thereof.
For software implementations, can by execute the embodiment of the present invention described in function module (such as process, function etc.) come
Realize the technology described in the embodiment of the present invention.Software code is storable in memory and is executed by processor.Memory can
With portion realizes in the processor or outside the processor.
Preferably, processor 1001 is additionally operable to：The voltage value of first sampling resistor is obtained according to predetermined period；Foundation
The voltage value calculates first current value.
Preferably, the charging interface of the mobile terminal includes signal wire, the signal wire include Typc-C interfaces D+,
At least one of D-, RX1+, RX1, RX2+, RX2-, TX1+, TX1-, TX2+, TX2-, SBU1, SBU2, CC1 and CC2, processing
Device 1001 is additionally operable to：The second current value that the charging equipment is sent is received by the signal wire, and, pass through the signal
Line is sent to the charging equipment stops charging instruction.
Preferably, processor 1001 is additionally operable to：When judging that the current differential is more than predetermined threshold value, it is abnormal to generate charging
Information；Charge exception information described in the screen display of the mobile terminal.
Mobile terminal 1000 can realize each process that mobile terminal is realized in the embodiment of the method for Fig. 1 to Fig. 2, to keep away
Exempt to repeat, which is not described herein again.
The power cord of the charging interface of the mobile terminal 1000 of the embodiment of the present invention is connected with the first sampling resistor, is charging
In the process, the first current value of the first sampling resistor is obtained according to predetermined period, what reception charging equipment reported is set by charging
Second current value of the second sampling resistor on the power cord of standby interface；The difference of the first current value and the second current value is calculated,
Current differential is obtained, when current differential is more than predetermined threshold value, is sent to charging equipment and stops charging instruction, charging equipment foundation
Stop charging instruction stopping to charge to mobile terminal, it, can be in charging equipment and mobile terminal using the embodiment of the present invention
In charging process, the first current value and the second electricity of the sampling resistor in the charging power cord of mobile terminal and charging equipment are obtained
Flow valuve illustrates that charging interface has short circuit, mobile terminal can send stopping when the current differential of the two exceeds predetermined threshold value
For charging instruction to charging equipment, charging equipment stops electric current output, can effectively prevent the lasting generation of short circuit, avoid charging
Mouth is burned, and ensure that charging safety.
Further, when judging that current differential is more than predetermined threshold value, charging exception information is generated, in the screen of mobile terminal
Curtain display charging exception information, may remind the user that charging is abnormal, user can check charging interface or charging equipment in time
Deng the user experience is improved.
Embodiment seven
Fig. 9 is a kind of structural schematic diagram for mobile terminal that the embodiment of the present invention seven provides.Specifically, the movement in Fig. 9
Terminal 1100 can be mobile phone, tablet computer, personal digital assistant (Personal Digital Assistant, PDA) or vehicle
Carry computer etc..
Mobile terminal 1100 in Fig. 9 includes radio frequency (Radio Frequency, RF) circuit 1101, memory 1102, defeated
Enter unit 1103, display unit 1104, current sample component 1105, processor 1106, voicefrequency circuit 1107, WiFi
(Wireless Fidelity) module 1108 and power supply 1109.
Wherein, input unit 1103 can be used for receiving number input by user or character information, and generate with movement eventually
The related signal input of user setting and function control at end 1100.Specifically, in the embodiment of the present invention, the input unit
1103 may include touch panel 11031.It is on it or neighbouring to collect user for touch panel 11031, also referred to as touch screen
Touch operation (for example user uses the operations of any suitable object or attachment on touch panel 11031 such as finger, stylus),
And corresponding attachment device is driven according to preset formula.Optionally, touch panel 11031 may include touch detecting apparatus
With two parts of touch controller.Wherein, the touch orientation of touch detecting apparatus detection user, and detect what touch operation was brought
Signal transmits a signal to touch controller；Touch controller receives touch information from touch detecting apparatus, and it is converted
At contact coordinate, then the processor 1106 is given, and order that processor 1106 is sent can be received and executed.In addition, can
To realize touch panel 11031 using multiple types such as resistance-type, condenser type, infrared ray and surface acoustic waves.In addition to touch surface
Plate 11031, input unit 1103 can also include other input equipments 11032, other input equipments 11032 may include but not
The one kind being limited in physical keyboard, function key (such as volume control button, switch key etc.), trace ball, mouse, operating lever etc.
Or it is a variety of.
Wherein, display unit 1104 can be used for showing information input by user or be supplied to information and the movement of user
The various menu interfaces of terminal 1100.Display unit 1104 may include display panel 11041, optionally, LCD may be used or have
The forms such as machine light emitting diode (Organic Light-Emitting Diode, OLED) configure display panel 11041.
It should be noted that touch panel 11031 can cover display panel 11041, touch display screen is formed, when the touch is shown
Screen, which detects, sends processor 1106 to determine the type of touch event on it or after neighbouring touch operation, then locate
Reason device 1106 provides corresponding visual output according to the type of touch event in touch display screen.
Touch display screen includes Application Program Interface viewing area and common control viewing area.The Application Program Interface viewing area
And arrangement mode of the common control viewing area does not limit, can be arranged above and below, left-right situs etc. can distinguish two it is aobvious
Show the arrangement mode in area.The Application Program Interface viewing area is displayed for the interface of application program.Each interface can be with
Including the interface elements such as icon and/or widget desktop controls of at least one application program.The Application Program Interface viewing area
Or the empty interface not comprising any content.This commonly uses control viewing area for showing the higher control of utilization rate, for example,
Application icons such as button, interface number, scroll bar, phone directory icon etc. are set.
Wherein processor 1106 is the control centre of mobile terminal 1100, utilizes various interfaces and connection whole mobile phone
Various pieces, by running or execute the software program and/or module that are stored in first memory 11021, and call
The data being stored in second memory 10022 execute the various functions and processing data of mobile terminal 1100, to movement
Terminal 1000 carries out integral monitoring.Optionally, processor 1106 may include one or more processing units.
Current sample component 1105 is used to acquire the first current value by the sampling resistor on charging power cord VBus, and
First current value is sent to processor 1106.
In embodiments of the present invention, the software program and/or module in the first memory 11021 are stored by calling
And/or the data in the second memory 11022, processor 1106 are used in charging process, obtain according to predetermined period described in
First current value of the first sampling resistor receives the second current value that charging equipment reports, and second current value is passes through
State the current value of the second sampling resistor；Wherein, the resistance value of first sampling resistor and the second sampling resistor is equal, calculates institute
The difference for stating the first current value and second current value, obtains current differential, and it is default to judge whether the current differential is more than
Threshold value stops charging instruction if so, being sent to the charging equipment, and the charging equipment is used to refer to according to stopping charging
It enables and stops charging to the mobile terminal.
Preferably, processor 1106 is additionally operable to：The voltage value of first sampling resistor is obtained according to predetermined period；Foundation
The voltage value calculates first current value.
Preferably, the charging interface of the mobile terminal includes signal wire, the signal wire include Typc-C interfaces D+,
At least one of D-, RX1+, RX1, RX2+, RX2-, TX1+, TX1-, TX2+, TX2-, SBU1, SBU2, CC1 and CC2, processing
Device 1106 is additionally operable to：The second current value that the charging equipment is sent is received by the signal wire, and, pass through the signal
Line is sent to the charging equipment stops charging instruction.
Preferably, processor 1106 is additionally operable to：When judging that the current differential is more than predetermined threshold value, it is abnormal to generate charging
Information；Charge exception information described in the screen display of the mobile terminal.
Mobile terminal 1100 can realize each process that mobile terminal is realized in previous embodiment, to avoid repeating, this
In repeat no more.
The power cord of the charging interface of the mobile terminal 1100 of the embodiment of the present invention is connected with the first sampling resistor, is charging
In the process, the first current value of the first sampling resistor is obtained according to predetermined period, what reception charging equipment reported is set by charging
Second current value of the second sampling resistor on the power cord of standby interface；The difference of the first current value and the second current value is calculated,
Current differential is obtained, when current differential is more than predetermined threshold value, is sent to charging equipment and stops charging instruction, charging equipment foundation
Stop charging instruction stopping to charge to mobile terminal, it, can be in charging equipment and mobile terminal using the embodiment of the present invention
In charging process, the first current value and the second electricity of the sampling resistor in the charging power cord of mobile terminal and charging equipment are obtained
Flow valuve illustrates that charging interface has short circuit, mobile terminal can send stopping when the current differential of the two exceeds predetermined threshold value
For charging instruction to charging equipment, charging equipment stops electric current output, can effectively prevent the lasting generation of short circuit, avoid charging
Mouth is burned, and ensure that charging safety.
Further, when judging that current differential is more than predetermined threshold value, charging exception information is generated, in the screen of mobile terminal
Curtain display charging exception information, may remind the user that charging is abnormal, user can check charging interface or charging equipment in time
Deng the user experience is improved.
Those of ordinary skill in the art may realize that the embodiment in conjunction with disclosed in the embodiment of the present invention describes each
Exemplary unit and algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These
Function is implemented in hardware or software actually, depends on the specific application and design constraint of technical solution.Profession
Technical staff can use different methods to achieve the described function each specific application, but this realization is not answered
Think beyond the scope of this invention.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In embodiment provided herein, it should be understood that disclosed device and method can pass through others
Mode is realized.For example, the apparatus embodiments described above are merely exemplary, for example, the division of the unit, only
A kind of division of logic function, formula that in actual implementation, there may be another division manner, such as multiple units or component can combine or
Person is desirably integrated into another system, or some features can be ignored or not executed.Another point, shown or discussed is mutual
Between coupling or direct-coupling or call connection can be by some interfaces, the INDIRECT COUPLING or call of device or unit connect
It connects, can be electrical, machinery or other forms.
The unit illustrated as separating component may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, you can be located at a place, or may be distributed over multiple
In network element.Some or all of unit therein can be selected according to the actual needs to realize the mesh of this embodiment scheme
's.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it can also
It is that each unit physically exists alone, it can also be during two or more units be integrated in one unit.
It, can be with if the function is realized in the form of SFU software functional unit and when sold or used as an independent product
It is stored in a computer read/write memory medium.Based on this understanding, technical scheme of the present invention is substantially in other words
The part of the part that contributes to existing technology or the technical solution can be expressed in the form of software products, the meter
Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be
People's computer, server or network equipment etc.) it performs all or part of the steps of the method described in the various embodiments of the present invention.
And storage medium above-mentioned includes：USB flash disk, mobile hard disk, ROM, RAM, magnetic disc or CD etc. are various can to store program code
Medium.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (12)
1. a kind of method of charging interface protection, is applied to mobile terminal, which is characterized in that the charging interface of the mobile terminal
Power cord be connected with the first sampling resistor, the charging equipment is equipped with the second sampling resistor, the method includes：
In charging process, the first current value of first sampling resistor is obtained according to predetermined period；
The second current value that charging equipment reports is received, second current value is the current value by the second sampling resistor；Its
In, the resistance value of first sampling resistor and the second sampling resistor is equal；
The difference for calculating first current value and second current value, obtains current differential；
Judge whether the current differential is more than predetermined threshold value；
Stop charging instruction if so, being sent to the charging equipment, the charging equipment stops according to the stopping charging instruction
Only charge to the mobile terminal.
2. according to the method described in claim 1, it is characterized in that, in the charging process, obtain according to predetermined period described in
The step of first current value of the first sampling resistor includes：
The voltage value of first sampling resistor is obtained according to predetermined period；
According to the voltage value, first current value is calculated.
3. according to the method described in claim 1, it is characterized in that, the charging interface of the mobile terminal includes signal wire, institute
It states mobile terminal and the second current value that the charging equipment is sent is received by the signal wire, and, pass through the signal wire
It is sent to the charging equipment and stops charging instruction.
4. according to the method described in claim 1, it is characterized in that, the signal wire includes D+, D-, RX1 of Typc-C interfaces
+, at least one of RX1, RX2+, RX2-, TX1+, TX1-, TX2+, TX2-, SBU1, SBU2, CC1 and CC2.
5. according to the method described in claim 1, it is characterized in that, the method further includes：
When judging that the current differential is more than predetermined threshold value, charging exception information is generated；
Charge exception information described in the screen display of the mobile terminal.
6. a kind of method of charging interface protection, is applied to charging equipment, which is characterized in that the charging interface of the charging equipment
Power cord be connected with the second sampling resistor, the method includes：
In charging process, the second current value of second sampling resistor is obtained according to predetermined period；
Second current value is sent to the mobile terminal；
When receiving the stopping charging instruction that the mobile terminal is sent, stopping charges to the mobile terminal.
7. a kind of mobile terminal, which is characterized in that the power cord of the charging interface of the mobile terminal is connected with the first sampling electricity
Resistance, the mobile terminal include：
First current value acquisition module, in charging process, the first of first sampling resistor to be obtained according to predetermined period
Current value；
Second current value receiving module, the second current value reported for receiving charging equipment, second current value are to pass through
The current value of the second sampling resistor on charging equipment；Wherein, the resistance value of first sampling resistor and the second sampling resistor
It is equal；
Current differential computing module, the difference for calculating first current value and second current value, obtains current difference
Value；
Current differential judgment module, for judging whether the current differential is more than predetermined threshold value；
Stop charging instruction sending module, stops charging instruction, the charging equipment foundation for being sent to the charging equipment
The stopping charging instruction stopping charging to the mobile terminal.
8. mobile terminal according to claim 7, which is characterized in that the first current value acquisition module includes：
Voltage value acquisition submodule, the voltage value for obtaining first sampling resistor；
First current value computational submodule, for according to the voltage value, calculating first current value.
9. mobile terminal according to claim 7, which is characterized in that the charging interface of the mobile terminal includes signal
Line, the second current value receiving module receive the second current value that the charging equipment is sent by the signal wire, and,
The stopping charging instruction sending module, which is sent by the signal wire to the charging equipment, stops charging instruction.
10. requiring mobile terminal described in 7 according to power, which is characterized in that the signal wire include Typc-C interfaces D+, D-,
At least one of RX1+, RX1, RX2+, RX2-, TX1+, TX1-, TX2+, TX2-, SBU1, SBU2, CC1 and CC2.
11. mobile terminal according to claim 7, which is characterized in that further include：
Charge exception information generation module, for when judging that the current differential is more than predetermined threshold value, generating the abnormal letter of charging
Breath；
Charge exception information display module, for the exception information that charges described in the screen display in the mobile terminal.
12. a kind of charging equipment, which is characterized in that the power cord of the charging interface of the charging equipment is connected with the second sampling
Resistance, the charging equipment include：
Second current value acquisition module, in charging process, the second of second sampling resistor to be obtained according to predetermined period
Current value；
Second current value sending module, for second current value to be sent to the mobile terminal；
Stop charging module, for when receiving the stopping charging instruction that the mobile terminal is sent, stopping to the movement
Terminal charge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710056825.9A CN108347033A (en) | 2017-01-25 | 2017-01-25 | A kind of method and mobile terminal, charging equipment of charging interface protection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710056825.9A CN108347033A (en) | 2017-01-25 | 2017-01-25 | A kind of method and mobile terminal, charging equipment of charging interface protection |
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