WO2015113462A1 - 电源适配器、终端和处理充电回路阻抗异常的方法 - Google Patents

电源适配器、终端和处理充电回路阻抗异常的方法 Download PDF

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Publication number
WO2015113462A1
WO2015113462A1 PCT/CN2015/070460 CN2015070460W WO2015113462A1 WO 2015113462 A1 WO2015113462 A1 WO 2015113462A1 CN 2015070460 W CN2015070460 W CN 2015070460W WO 2015113462 A1 WO2015113462 A1 WO 2015113462A1
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WO
WIPO (PCT)
Prior art keywords
power adapter
terminal
impedance
charging circuit
charging
Prior art date
Application number
PCT/CN2015/070460
Other languages
English (en)
French (fr)
Inventor
张加亮
Original Assignee
广东欧珀移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201410043148.3A external-priority patent/CN104810877B/zh
Priority claimed from CN201410042716.8A external-priority patent/CN104808104A/zh
Priority to US15/115,052 priority Critical patent/US10320206B2/en
Priority to JP2016549266A priority patent/JP6320544B2/ja
Priority to KR1020167022404A priority patent/KR20160136283A/ko
Priority to EP15742934.1A priority patent/EP3101762B1/en
Application filed by 广东欧珀移动通信有限公司 filed Critical 广东欧珀移动通信有限公司
Priority to EP18201161.9A priority patent/EP3451487B1/en
Priority to CN201580004396.XA priority patent/CN106030961B/zh
Priority to ES15742934T priority patent/ES2711732T3/es
Priority to PL15742934T priority patent/PL3101762T3/pl
Priority to DK15742934.1T priority patent/DK3101762T3/en
Publication of WO2015113462A1 publication Critical patent/WO2015113462A1/zh
Priority to US16/397,991 priority patent/US11631981B2/en

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
    • G01R19/16571—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533 comparing AC or DC current with one threshold, e.g. load current, over-current, surge current or fault current
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R31/00—Coupling parts supported only by co-operation with counterpart
    • H01R31/06—Intermediate parts for linking two coupling parts, e.g. adapter
    • 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
    • H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
    • H02J7/00036—Charger exchanging data with battery
    • 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
    • H02J7/00047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with provisions for charging different types of batteries
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00304—Overcurrent protection
    • 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
    • H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0069—Charging or discharging for charge maintenance, battery initiation or rejuvenation
    • 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
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • H04M1/0262—Details of the structure or mounting of specific components for a battery compartment
    • 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
    • H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
    • H02J7/00034—Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2201/00—Electronic components, circuits, software, systems or apparatus used in telephone systems
    • H04M2201/34—Microprocessors

Definitions

  • Embodiments of the present invention relate to the field of charging and, more particularly, to power adapters, terminals, and methods of handling charging loop impedance anomalies.
  • the abnormality of the charging circuit impedance often occurs.
  • the causes of the impedance abnormality are various.
  • the charging interface is not inserted tightly, resulting in poor contact, and the two ends of the battery are dirty, causing poor contact between the battery and the connectors at both ends of the battery.
  • the charging device such as the battery, the power adapter, the terminal, etc. may be damaged, and there is a safety hazard.
  • the prior art cannot detect and process the impedance abnormality of the charging circuit, and the safety of the charging process is low.
  • Embodiments of the present invention provide a power adapter, a terminal, and a method for processing an abnormality of a charging loop impedance to improve safety of a charging process.
  • a terminal in a first aspect, includes a battery and a charging interface, and the terminal forms a charging circuit with the power adapter through the charging interface to charge the battery, and the terminal further includes: a communication unit, configured to: When the power adapter charges the terminal, receiving voltage indication information from the power adapter, the voltage indication information indicating an output voltage of the power adapter; a detecting unit, configured to detect an input voltage of the power adapter; and an abnormality processing unit And determining, according to the difference between the input voltage and the output voltage, whether the impedance of the charging circuit is abnormal, and when the impedance of the charging circuit is abnormal, controlling the charging circuit to enter a protection state.
  • the exception processing unit is configured to determine whether an impedance of the charging circuit is abnormal according to a difference between the input voltage and the output voltage.
  • the impedance of the charging circuit is abnormal, controlling the charging circuit to enter a protection state, specifically, the abnormal processing unit determines a level of the impedance according to the difference; the abnormal processing unit is configured according to the level of the impedance. Controlling the charging circuit to enter a protection corresponding to the level state.
  • the input voltage of the power adapter and the detection position of the output voltage of the power adapter are respectively located at the charging interface At both ends, the impedance of the charging circuit specifically refers to the impedance of the line in the charging interface.
  • the detecting position of the input voltage of the power adapter is located at two ends of the battery of the terminal, the charging circuit
  • the impedance specifically refers to the impedance of the line between the power adapter to the battery of the terminal.
  • the terminal further includes: an alarm device, configured to generate an alarm signal when an impedance of the charging circuit is abnormal .
  • the communication unit sends a charging protection indication to the power adapter when an impedance of the charging circuit is abnormal Information indicating that the power adapter controls the charging circuit to enter a protection state.
  • the charging interface includes a power line and a data line
  • the terminal forms a charging with the power adapter through the charging interface a circuit for charging the battery, specifically comprising: the terminal forming a charging circuit with the power adapter through a power line in the charging interface to charge the battery; and the communication unit receiving a voltage indication from the power adapter
  • the information specifically includes: the communication unit receiving the voltage indication information from the power adapter through a data line in the charging interface.
  • a power adapter including a power conversion unit and a charging interface, wherein the power conversion unit forms a charging circuit with the terminal to charge a battery of the terminal, and the power adapter further includes: detecting a unit, a communication unit, and an exception handling unit, wherein the detecting unit detects an output voltage of the power adapter when the power adapter charges the terminal; the communication unit transmits voltage indication information to the terminal, The voltage indication information indicates an output voltage of the power adapter detected by the detecting unit; when the terminal determines the charging circuit based on a difference between an output voltage of the power adapter and an input voltage of the power adapter
  • the communication unit receives charging protection indication information from the terminal when the impedance is abnormal; the abnormality processing unit controls the charging circuit according to the indication of the charging protection indication information Enter the protection state.
  • the charging interface includes a power line and a data line
  • the power conversion unit forms a charging circuit with the terminal through the charging interface to charge the battery of the terminal.
  • the power conversion unit forms a charging circuit with the terminal through the power line of the charging interface to charge the battery of the terminal
  • the communication unit sends the voltage indication information to the terminal, specifically: The communication unit transmits the voltage indication information to the terminal through a data line in the charging interface.
  • the input voltage of the power adapter and the detection position of the output voltage of the power adapter are respectively located at the charging interface At both ends, the impedance of the charging circuit specifically refers to the impedance of the line in the charging interface.
  • the detection position of the input voltage of the power adapter is located at two ends of the battery of the terminal, the charging circuit
  • the impedance specifically refers to the impedance of the line between the power adapter to the battery of the terminal.
  • the power adapter further includes: an alarm device, configured to generate an alarm when the impedance of the charging circuit is abnormal. signal.
  • a method for processing an abnormality of a charging loop impedance comprising: receiving, when the power adapter is charging a terminal, voltage indicating information from the power adapter, the voltage indicating information indicating an output of the power adapter a voltage; the terminal detects an input voltage of the power adapter; the terminal determines whether an impedance of the charging circuit is abnormal according to a difference between the input voltage and the output voltage, when an impedance of the charging circuit is abnormal And controlling the charging circuit to enter a protection state.
  • the terminal determines, according to a difference between the input voltage and the output voltage, whether an impedance of the charging circuit is abnormal, when the impedance of the charging circuit is When abnormal, controlling the charging circuit to enter a protection state includes: determining, by the terminal, the level of the impedance according to the difference; and controlling, by the terminal, the charging circuit to enter a level corresponding to the level according to the level of the impedance Protection status.
  • the input voltage of the power adapter and the detection position of the output voltage of the power adapter are respectively located at two ends of the charging interface, and the impedance of the charging circuit specifically refers to the impedance of the line in the charging interface.
  • the detection position of the input voltage of the power adapter is located at two ends of the battery of the terminal, the charging circuit
  • the impedance specifically refers to the impedance of the line between the power adapter to the battery of the terminal.
  • the method further includes: when the impedance of the charging circuit is abnormal, the terminal generates an alarm signal.
  • the method further includes: when the impedance of the charging circuit is abnormal, the terminal is to the power source The adapter sends a charging protection indication message instructing the power adapter to control the charging circuit to enter a protection state.
  • the charging interface includes a power line and a data line
  • the power adapter passes the power line as the terminal Charging, the terminal receiving voltage indication information from the power adapter, comprising: the terminal receiving the voltage indication information from the power adapter through a data line in the charging interface.
  • a fourth aspect provides a method for processing an abnormality of a charging loop impedance, comprising: detecting a output voltage of the power adapter when the power adapter charges the terminal; and transmitting, by the power adapter, the voltage indication information to the terminal And the voltage indication information indicates an output voltage of the power adapter detected by the power adapter; and determining, when the terminal is based on a difference between an output voltage of the power adapter and an input voltage of the power adapter, When the impedance of the loop is abnormal, the power adapter receives charging protection indication information from the terminal; the power adapter controls the charging circuit to enter a protection state according to the indication of the charging protection indication information.
  • the charging interface includes a power line and a data line
  • the power adapter charges the terminal by a power line in the charging interface
  • the power adapter Transmitting the voltage indication information to the terminal includes: the power adapter transmitting the voltage indication information to the terminal by using a data line in the charging interface.
  • the input voltage of the power adapter and the detection position of the output voltage of the power adapter are respectively located at two ends of the charging interface, and the impedance of the charging circuit specifically refers to the impedance of the line in the charging interface.
  • the detection position of the input voltage of the power adapter is located at two ends of the battery of the terminal, the charging circuit
  • the impedance specifically refers to the impedance of the line between the power adapter to the battery of the terminal.
  • the method further includes: generating an alarm signal when the impedance of the charging circuit is abnormal.
  • the terminal obtains the output voltage of the power adapter through communication with the power adapter, and the terminal determines whether the impedance of the charging circuit occurs based on the difference between the output voltage of the power adapter and the input voltage of the power adapter detected by the terminal. Abnormal, when the impedance of the charging circuit is abnormal, the charging circuit is controlled to enter the protection state, which improves the safety of the charging process.
  • FIG. 1 is a schematic block diagram of a terminal according to an embodiment of the present invention.
  • FIG. 2 is a schematic block diagram of a power adapter of an embodiment of the present invention.
  • FIG. 3 is a schematic flowchart of a method for processing an abnormality of a charging loop impedance according to an embodiment of the present invention.
  • FIG. 4 is a schematic flow chart of a method for processing an abnormality of a charging loop impedance according to an embodiment of the present invention.
  • FIG. 1 is a schematic block diagram of a terminal according to an embodiment of the present invention.
  • the terminal 10 of FIG. 1 includes a battery 11 and a charging interface 12, and the terminal 10 forms a charging circuit with the power adapter through the charging interface 12, and is electrically The pool 11 is charged, and the terminal 10 further includes:
  • the communication unit 13 is configured to receive, when the power adapter is charging the terminal, voltage indication information from the power adapter, where the voltage indication information indicates an output voltage of the power adapter detected by the terminal;
  • a detecting unit 14 configured to detect an input voltage of the power adapter
  • the abnormality processing unit 15 is configured to determine whether the impedance of the charging circuit is abnormal according to the difference between the input voltage and the output voltage, and control the charging circuit to enter a protection state when the impedance of the charging circuit is abnormal.
  • the terminal obtains the output voltage of the power adapter through communication with the power adapter, and the terminal determines whether the impedance of the charging circuit occurs based on the difference between the output voltage of the power adapter and the input voltage of the power adapter detected by the terminal. Abnormal, when the impedance of the charging circuit is abnormal, the charging circuit is controlled to enter the protection state, which improves the safety of the charging process.
  • abnormality processing unit 15 controlling the charging circuit to enter the protection state may include: the abnormality processing unit 15 reduces the input voltage of the power adapter; the abnormality processing unit 15 reduces the input current of the power adapter; or the abnormality processing unit 15 turns off the charging circuit.
  • the abnormality processing unit 15 determines whether the impedance of the charging circuit is abnormal according to the difference between the input voltage and the output voltage.
  • the control charging circuit enters a protection state, which specifically includes: The abnormality processing unit 15 determines the level of the impedance of the charging circuit according to the difference between the input voltage of the power adapter and the output voltage; the abnormality processing unit 15 controls the charging circuit to enter the protection state corresponding to the level according to the level of the impedance.
  • the correspondence between the difference between the input voltage and the output voltage of the power adapter and the impedance level may be set in advance, and when the abnormality processing unit 15 determines the actual difference between the input voltage of the power adapter and the output voltage of the power adapter,
  • the impedance level corresponding to the actual difference value is found by using the above correspondence relationship.
  • Different impedance levels can correspond to different protection states. For example, impedance levels are classified as "light”, “medium”, and “heavy”. When the impedance level is “light”, the charging circuit can be controlled to continue charging with a large current; when the impedance level is “medium”, the charging circuit can be controlled to charge with a small current; when the impedance level is “heavy”, the charging circuit can be controlled to be turned off.
  • the position of the power adapter to detect the output voltage and the position of the terminal to detect the input voltage of the power adapter are not specifically limited, and may be determined according to different requirements.
  • the input voltage of the power adapter and the detection position of the output voltage of the power adapter are respectively located at two ends of the charging interface, and the impedance of the charging circuit specifically refers to the impedance of the line in the charging interface.
  • the input voltage of the power adapter and the detection position of the output voltage of the power adapter are respectively located in the charging
  • the two ends of the electrical interface specifically refer to: the position of the power adapter detecting the output voltage and the position of the terminal detecting the input voltage of the power adapter being close to the charging interface of the connection.
  • the detection position of the input voltage of the power adapter is located at both ends of the battery, and the impedance of the charging circuit specifically refers to the impedance of the line between the battery from the power adapter to the terminal. Since the input current of the power adapter finally reaches the two ends of the battery after passing through the devices in the terminal, when the terminal detects the input voltage of the power adapter at both ends of the battery, the difference between the input voltage and the output voltage of the power adapter can indicate the entire charging circuit. Impedance.
  • the terminal 10 further includes: an alarm device, configured to generate an alarm signal when the impedance of the charging circuit is abnormal.
  • the alarm device can be an audible alarm device or an indicator light. Taking the impedance of the charging circuit as the impedance of the line in the charging interface as an example, when the alarm device alarms, it may indicate that the charging interface is in poor contact, and reminds the user to reconnect the charging interface between the power adapter and the terminal.
  • the communication unit 13 sends charging protection indication information to the power adapter, instructing the power adapter to control the charging circuit to enter the protection state.
  • the terminal when the impedance of the charging circuit is abnormal, the terminal not only actively controls the charging circuit to enter the protection state, but also notifies the power adapter to control the charging circuit to enter the protection state, so that even if the abnormal processing unit of the terminal fails, the terminal cannot be controlled.
  • the charging circuit When the charging circuit enters the protection state, the charging circuit can still be controlled by the power adapter to enter the protection state, thereby further improving the safety of the charging process.
  • the charging interface 12 includes a power line and a data line.
  • the terminal 10 forms a charging circuit with the power adapter through the charging interface 12 to charge the battery.
  • the terminal 10 passes through the power line in the charging interface 12 and
  • the power adapter forms a charging circuit for charging the battery 11;
  • the communication unit 13 is configured to receive the voltage indication information from the terminal when the power adapter 10 is charging the terminal, and specifically includes: the communication unit 13 passes the data line from the charging interface 12 from the power adapter Receive voltage indication information.
  • the charging interface is a USB (Universal Serial Bus) interface or a micro USB interface
  • the power cable is a power cable in the USB interface, such as a +5V and -5V power cable
  • the data cable is in the USB interface.
  • Data lines such as D+ lines and D- lines.
  • FIG. 2 is a schematic block diagram of a power adapter of an embodiment of the present invention.
  • Power adapter 20 of Figure 2 The power conversion unit 21 and the charging interface 22 are included.
  • the power conversion unit 21 forms a charging circuit with the terminal through the charging interface 22 to charge the battery of the terminal.
  • the power adapter 20 further includes: a detecting unit 23, a communication unit 24, and an abnormality processing unit 25, wherein ,
  • the detecting unit 23 detects the output voltage of the power adapter
  • the communication unit 24 transmits voltage indication information to the terminal, and the voltage indication information indicates an output voltage of the power adapter detected by the detecting unit 23;
  • the communication unit 24 receives the charging protection indication information from the terminal;
  • the exception handling unit 25 controls the charging loop to enter the protection state in accordance with the indication of the charging protection indication information.
  • the power adapter communicates with the terminal during the charging process, and sends the output voltage of the power adapter detected by the terminal to the terminal, so that the terminal calculates the difference between the output voltage of the power adapter and the input voltage of the power adapter detected by the terminal. Determine whether the impedance of the charging circuit is abnormal.
  • the power adapter receives the charging protection indication information from the terminal, and then controls the charging circuit to enter the protection state, thereby improving the safety of the charging process.
  • the charging interface 22 includes a power line and a data line.
  • the power conversion unit 21 forms a charging circuit with the terminal through the charging interface 22 to charge the battery of the terminal. Specifically, the power conversion unit 21 passes through the charging interface 22 .
  • the power line and the terminal form a charging circuit to charge the battery of the terminal.
  • the communication unit 24 sends the voltage indication information to the terminal. Specifically, the communication unit 24 sends the voltage indication information to the terminal through the data line in the charging interface 22.
  • the charging interface is a USB (Universal Serial Bus) interface or a micro USB interface
  • the power cable is a power cable in the USB interface, such as a +5V and -5V power cable
  • the data cable is in the USB interface.
  • Data lines such as D+ lines and D- lines.
  • the location where the power adapter detects the output voltage and the location where the terminal detects the input voltage of the power adapter are not specifically limited, and may be determined according to different requirements.
  • the input voltage of the power adapter and the detection position of the output voltage of the power adapter are respectively located at two ends of the charging interface, and the impedance of the charging circuit specifically refers to the impedance of the line in the charging interface.
  • the input voltage of the power adapter and the detection position of the output voltage of the power adapter are respectively located in the charging
  • the two ends of the electrical interface specifically refer to: the position of the power adapter detecting the output voltage and the position of the terminal detecting the input voltage of the power adapter being close to the charging interface of the connection.
  • the detection position of the input voltage of the power adapter is located at both ends of the battery, and the impedance of the charging circuit specifically refers to the impedance of the line between the battery from the power adapter to the terminal. Since the input current of the power adapter finally reaches the two ends of the battery after passing through the devices in the terminal, when the terminal detects the input voltage of the power adapter at both ends of the battery, the difference between the input voltage and the output voltage of the power adapter can indicate the entire charging circuit. Whether the impedance is abnormal.
  • the power adapter 20 further includes: an alarm device, configured to generate an alarm signal when the impedance of the charging circuit is abnormal.
  • the alarm device can be an audible alarm device or an indicator light. Taking the impedance of the charging circuit as the impedance of the line in the charging interface as an example, when the alarm device alarms, it indicates that the charging interface is in poor contact, and reminds the user to reconnect the charging interface between the power adapter and the terminal.
  • FIG. 3 is a schematic flowchart of a method for processing an abnormality of a charging loop impedance according to an embodiment of the present invention. It should be understood that the method of FIG. 3 can be performed by the terminal shown in FIG. 1. To avoid repetition, details are not described herein.
  • the method of Figure 3 includes:
  • the terminal receives the voltage indication information from the power adapter, and the voltage indication information indicates an output voltage of the power adapter.
  • the terminal detects an input voltage of the power adapter.
  • the terminal determines whether the impedance of the charging circuit is abnormal according to the difference between the input voltage and the output voltage. When the impedance of the charging circuit is abnormal, the charging circuit is controlled to enter a protection state.
  • the terminal obtains the output voltage of the power adapter through communication with the power adapter, and the terminal determines whether the impedance of the charging circuit occurs based on the difference between the output voltage of the power adapter and the input voltage of the power adapter detected by the terminal. Abnormal, when the impedance of the charging circuit is abnormal, the charging circuit is controlled to enter the protection state, which improves the safety of the charging process.
  • the terminal determines whether the impedance of the charging circuit is abnormal according to the difference between the input voltage and the output voltage, and when the impedance of the charging circuit is abnormal, controlling the charging circuit to enter a protection state, including: the terminal according to the difference, The level of the impedance is determined; the terminal controls the charging circuit to enter the protection state corresponding to the level according to the level of the impedance.
  • the input voltage of the power adapter and the detection position of the output voltage of the power adapter are respectively located at two ends of the charging interface, and the impedance of the charging circuit specifically refers to the charging interface.
  • the impedance of the line in the line is a prefix of the power adapter and the detection position of the output voltage of the power adapter.
  • the detection position of the input voltage of the power adapter is located at both ends of the battery of the terminal, and the impedance of the charging circuit specifically refers to the impedance of the line between the battery from the power adapter to the terminal.
  • the method of FIG. 3 further includes: when the impedance of the charging circuit is abnormal, the terminal generates an alarm signal.
  • the method of FIG. 3 further includes: when the impedance of the charging circuit is abnormal, the terminal sends a charging protection indication message to the power adapter, instructing the power adapter to control the charging circuit to enter a protection state.
  • the charging interface includes a power line and a data line
  • the power adapter charges the terminal through the power line
  • the terminal receives the voltage indication information from the power adapter, including: the terminal receives the power adapter from the power adapter through the data line in the charging interface. Voltage indication information.
  • FIG. 4 is a schematic flow chart of a method for processing an abnormality of a charging loop impedance according to an embodiment of the present invention. It should be understood that the method of FIG. 4 can be performed by the power adapter of FIG. 2, and to avoid repetition, it will not be described in detail herein.
  • the method of Figure 4 includes:
  • the power adapter detects the output voltage of the power adapter
  • the power adapter sends a voltage indication message to the terminal, where the voltage indication information indicates an output voltage of the power adapter detected by the power adapter.
  • the power adapter receives the charging protection indication information from the terminal.
  • the power adapter controls the charging circuit to enter a protection state according to the indication of the charging protection indication information.
  • the power adapter communicates with the terminal during the charging process, and sends the output voltage of the power adapter detected by the terminal to the terminal, so that the terminal calculates the difference between the output voltage of the power adapter and the input voltage of the power adapter detected by the terminal. Determine whether the impedance of the charging circuit is abnormal.
  • the power adapter receives the charging protection indication information from the terminal, and then controls the charging circuit to enter the protection state, thereby improving the safety of the charging process.
  • the charging interface includes a power line and a data line
  • the power adapter charges the terminal through a power line in the charging interface
  • the power adapter sends a voltage indication letter to the terminal.
  • the information includes: the power adapter sends a voltage indication message to the terminal through a data line in the charging interface.
  • the input voltage of the power adapter and the detection position of the output voltage of the power adapter are respectively located at two ends of the charging interface, and the impedance of the charging circuit specifically refers to the impedance of the line in the charging interface.
  • the detection position of the input voltage of the power adapter is located at both ends of the battery of the terminal, and the impedance of the charging circuit specifically refers to the impedance of the line between the battery from the power adapter to the terminal.
  • the method of FIG. 4 further includes: generating an alarm signal when the impedance of the charging circuit is abnormal.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
  • the technical solution of the present invention which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

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Abstract

一种电源适配器、终端以及处理充电回路阻抗异常的方法，该终端（10）通过充电接口（12）与电源适配器形成充电回路，为电池（11）充电，终端（10）还包括：通信单元（13），用于当电源适配器为终端充电时，从电源适配器接收电压指示信息，电压指示信息指示电源适配器的输出电压；检测单元（14），用于检测电源适配器的输入电压；异常处理单元（15），用于根据输入电压和输出电压的差值，确定充电回路的阻抗是否异常，当充电回路的阻抗异常时，控制充电回路进入保护状态。通过对充电回路的阻抗异常进行检测和处理，提高了充电过程的安全性。

Description

电源适配器、终端和处理充电回路阻抗异常的方法 技术领域
本发明实施例涉及充电领域，并且更具体地，涉及电源适配器、终端和处理充电回路阻抗异常的方法。
背景技术
目前，多数电子设备中的电池是通过电子设备的充电接口与外部的电源适配器连接以实现充电的。
充电过程中，时常会发生充电回路阻抗异常的现象，阻抗异常产生的原因多种多样，例如，充电接口没有插紧导致接触不良，电池两端具有污垢导致电池与电池两端的连接器接触不良。
在充电回路的阻抗发生异常的情况下，如果继续充电，会损坏如电池、电源适配器、终端等充电器件，存在安全隐患。现有技术无法对充电回路的阻抗异常进行检测和处理，充电过程的安全性较低。
发明内容
本发明实施例提供一种电源适配器、终端和处理充电回路阻抗异常的方法，以提高充电过程的安全性。
第一方面，提供一种终端，包括电池和充电接口，所述终端通过所述充电接口与电源适配器形成充电回路，为所述电池充电，所述终端还包括：通信单元，用于当所述电源适配器为所述终端充电时，从所述电源适配器接收电压指示信息，所述电压指示信息指示所述电源适配器的输出电压；检测单元，用于检测所述电源适配器的输入电压；异常处理单元，用于根据所述输入电压和所述输出电压的差值，确定所述充电回路的阻抗是否异常，当所述充电回路的阻抗异常时，控制所述充电回路进入保护状态。
结合第一方面，在第一方面的一种实现方式中，所述异常处理单元，用于根据所述输入电压和所述输出电压的差值，确定所述充电回路的阻抗是否异常，当所述充电回路的阻抗异常时，控制所述充电回路进入保护状态，具体包括：所述异常处理单元根据所述差值，确定所述阻抗的等级；所述异常处理单元根据所述阻抗的等级，控制所述充电回路进入该等级对应的保护状 态。
结合第一方面或其上述实现方式的任一种，在第一方面的另一种实现方式中，所述电源适配器的输入电压和所述电源适配器的输出电压的检测位置分别位于所述充电接口的两端，所述充电回路的阻抗具体指所述充电接口中的线路的阻抗。
结合第一方面或其上述实现方式的任一种，在第一方面的另一种实现方式中，所述电源适配器的输入电压的检测位置位于所述终端的电池的两端，所述充电回路的阻抗具体指从所述电源适配器到所述终端的电池之间的线路的阻抗。
结合第一方面或其上述实现方式的任一种，在第一方面的另一种实现方式中，所述终端还包括：报警装置，用于当所述充电回路的阻抗异常时，产生报警信号。
结合第一方面或其上述实现方式的任一种，在第一方面的另一种实现方式中，当所述充电回路的阻抗发生异常时，所述通信单元向所述电源适配器发送充电保护指示信息，指示所述电源适配器控制所述充电回路进入保护状态。
结合第一方面或其上述实现方式的任一种，在第一方面的另一种实现方式中，所述充电接口包括电源线和数据线，所述终端通过所述充电接口与电源适配器形成充电回路，为所述电池充电，具体包括：所述终端通过所述充电接口中的电源线与所述电源适配器形成充电回路，为所述电池充电；所述通信单元从所述电源适配器接收电压指示信息，具体包括：所述通信单元通过所述充电接口中的数据线从所述电源适配器接收所述电压指示信息。
第二方面，提供一种电源适配器，包括功率转换单元和充电接口，所述功率转换单元通过所述充电接口与终端形成充电回路，为所述终端的电池充电，所述电源适配器还包括：检测单元、通信单元和异常处理单元，其中，当所述电源适配器为所述终端充电时，所述检测单元检测所述电源适配器的输出电压；所述通信单元向所述终端发送电压指示信息，所述电压指示信息指示所述检测单元检测到的所述电源适配器的输出电压；当所述终端基于所述电源适配器的输出电压以及所述电源适配器的输入电压的差值，确定所述充电回路的阻抗发生异常时，所述通信单元从所述终端接收充电保护指示信息；所述异常处理单元根据所述充电保护指示信息的指示控制所述充电回路 进入保护状态。
结合第二方面，在第二方面的一种实现方式中，所述充电接口包括电源线和数据线，所述功率转换单元通过所述充电接口与终端形成充电回路，为所述终端的电池充电，具体包括：所述功率转换单元通过所述充电接口中的电源线与终端形成充电回路，为所述终端的电池充电；所述通信单元向所述终端发送电压指示信息，具体包括：所述通信单元通过所述充电接口中的数据线向所述终端发送所述电压指示信息。
结合第二方面或其上述实现方式的任一种，在第二方面的另一种实现方式中，所述电源适配器的输入电压和所述电源适配器的输出电压的检测位置分别位于所述充电接口的两端，所述充电回路的阻抗具体指所述充电接口中的线路的阻抗。
结合第二方面或其上述实现方式的任一种，在第二方面的另一种实现方式中，所述电源适配器的输入电压的检测位置位于所述终端的电池的两端，所述充电回路的阻抗具体指从所述电源适配器到所述终端的电池之间的线路的阻抗。
结合第二方面或其上述实现方式的任一种，在第二方面的另一种实现方式中，所述电源适配器还包括：报警装置，用于当所述充电回路的阻抗异常时，产生报警信号。
第三方面，提供一种处理充电回路阻抗异常的方法，包括：当电源适配器为终端充电时，所述终端从所述电源适配器接收电压指示信息，所述电压指示信息指示所述电源适配器的输出电压；所述终端检测所述电源适配器的输入电压；所述终端根据所述输入电压和所述输出电压的差值，确定所述充电回路的阻抗是否异常，当所述充电回路的阻抗异常时，控制所述充电回路进入保护状态。
结合第三方面，在第三方面的一种实现方式中，所述终端根据所述输入电压和所述输出电压的差值，确定所述充电回路的阻抗是否异常，当所述充电回路的阻抗异常时，控制所述充电回路进入保护状态，包括：所述终端根据所述差值，确定所述阻抗的等级；所述终端根据所述阻抗的等级，控制所述充电回路进入该等级对应的保护状态。
结合第三方面或其上述实现方式的任一种，在第三方面的另一种实现方式中，所述电源适配器的输入电压和所述电源适配器的输出电压的检测位置 分别位于所述充电接口的两端，所述充电回路的阻抗具体指所述充电接口中的线路的阻抗。
结合第三方面或其上述实现方式的任一种，在第三方面的另一种实现方式中，所述电源适配器的输入电压的检测位置位于所述终端的电池的两端，所述充电回路的阻抗具体指从所述电源适配器到所述终端的电池之间的线路的阻抗。
结合第三方面或其上述实现方式的任一种，在第三方面的另一种实现方式中，所述方法还包括：当所述充电回路的阻抗异常时，所述终端产生报警信号。
结合第三方面或其上述实现方式的任一种，在第三方面的另一种实现方式中，所述方法还包括：当所述充电回路的阻抗发生异常时，所述终端向所述电源适配器发送充电保护指示信息，指示所述电源适配器控制所述充电回路进入保护状态。
结合第三方面或其上述实现方式的任一种，在第三方面的另一种实现方式中，所述充电接口包括电源线和数据线，所述电源适配器通过所述电源线为所述终端充电，所述终端从所述电源适配器接收电压指示信息，包括：所述终端通过所述充电接口中的数据线从所述电源适配器接收所述电压指示信息。
第四方面，提供一种处理充电回路阻抗异常的方法，包括：当电源适配器为终端充电时，所述电源适配器检测所述电源适配器的输出电压；所述电源适配器向所述终端发送电压指示信息，所述电压指示信息指示所述电源适配器检测到的所述电源适配器的输出电压；当所述终端基于所述电源适配器的输出电压以及所述电源适配器的输入电压的差值，确定所述充电回路的阻抗发生异常时，所述电源适配器从所述终端接收充电保护指示信息；所述电源适配器根据所述充电保护指示信息的指示控制所述充电回路进入保护状态。
结合第四方面，在第四方面的一种实现方式中，所述充电接口包括电源线和数据线，所述电源适配器通过所述充电接口中的电源线为所述终端充电，所述电源适配器向所述终端发送电压指示信息，包括：所述电源适配器通过所述充电接口中的数据线向所述终端发送所述电压指示信息。
结合第四方面或其上述实现方式的任一种，在第四方面的另一种实现方 式中，所述电源适配器的输入电压和所述电源适配器的输出电压的检测位置分别位于所述充电接口的两端，所述充电回路的阻抗具体指所述充电接口中的线路的阻抗。
结合第四方面或其上述实现方式的任一种，在第四方面的另一种实现方式中，所述电源适配器的输入电压的检测位置位于所述终端的电池的两端，所述充电回路的阻抗具体指从所述电源适配器到所述终端的电池之间的线路的阻抗。
结合第四方面或其上述实现方式的任一种，在第四方面的另一种实现方式中，所述方法还包括：当所述充电回路的阻抗异常时，产生报警信号。
本发明实施例中，终端通过与电源适配器之间的通信得到电源适配器的输出电压，终端基于电源适配器的输出电压与自身检测到的电源适配器的输入电压的差值，确定充电回路的阻抗是否发生异常，当充电回路的阻抗发生异常时，控制充电回路进入保护状态，提高了充电过程的安全性。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对本发明实施例中所需要使用的附图作简单地介绍，显而易见地，下面所描述的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本发明实施例的终端的示意性框图。
图2是本发明实施例的电源适配器的示意性框图。
图3是本发明实施例的处理充电回路阻抗异常的方法的示意性流程图。
图4是本发明实施例的处理充电回路阻抗异常的方法的示意性流程图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明的一部分实施例，而不是全部实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，都应属于本发明保护的范围。
图1是本发明实施例的终端的示意性框图。图1的终端10包括电池11和充电接口12，终端10通过充电接口12与电源适配器形成充电回路，为电 池11充电，终端10还包括：
通信单元13，用于当电源适配器为终端充电时，从电源适配器接收电压指示信息，电压指示信息指示终端检测到的电源适配器的输出电压；
检测单元14，用于检测电源适配器的输入电压；
异常处理单元15，用于根据输入电压和输出电压的差值，确定充电回路的阻抗是否异常，当充电回路的阻抗异常时，控制充电回路进入保护状态。
本发明实施例中，终端通过与电源适配器之间的通信得到电源适配器的输出电压，终端基于电源适配器的输出电压与自身检测到的电源适配器的输入电压的差值，确定充电回路的阻抗是否发生异常，当充电回路的阻抗发生异常时，控制充电回路进入保护状态，提高了充电过程的安全性。
应理解，上述异常处理单元15控制充电回路进入保护状态可包括：异常处理单元15降低电源适配器的输入电压；异常处理单元15降低电源适配器的输入电流；或者，异常处理单元15断开充电回路。
可选地，作为一个实施例，上述异常处理单元15根据输入电压和输出电压的差值，确定充电回路的阻抗是否异常，当充电回路的阻抗异常时，控制充电回路进入保护状态，具体包括：异常处理单元15根据电源适配器的输入电压和输出电压的差值，确定充电回路的阻抗的等级；异常处理单元15根据该阻抗的等级，控制充电回路进入该等级对应的保护状态。
例如，可以预先设定电源适配器的输入电压和输出电压的差值与阻抗等级的对应关系，当异常处理单元15确定出电源适配器的输入电压和电源适配器的输出电压的实际差值时，就能够利用上述对应关系找到该实际差值对应的阻抗等级。不同的阻抗等级可以对应不同的保护状态，例如，阻抗等级分为“轻”，“中”，“重”。阻抗等级为“轻”时，可以控制充电回路继续以大电流充电；阻抗等级为“中”时，可以控制充电回路以小电流充电；阻抗等级为“重”时，可以控制充电回路关断。
需要说明的是，本发明实施例对电源适配器检测输出电压的位置，以及终端检测电源适配器的输入电压的位置不作具体限定，可以根据不同的需求而定。
例如，电源适配器的输入电压和电源适配器的输出电压的检测位置分别位于充电接口的两端，充电回路的阻抗具体指充电接口中的线路的阻抗。上述电源适配器的输入电压和电源适配器的输出电压的检测位置分别位于充 电接口的两端具体是指：电源适配器检测输出电压的位置和终端检测电源适配器输入电压的位置靠近连接二者的充电接口，当二者检测到的电压的压降异常时，可以推断出是由于充电接口中的线路阻抗异常导致的。
又如，电源适配器的输入电压的检测位置位于电池的两端，充电回路的阻抗具体指从电源适配器到终端的电池之间的线路的阻抗。由于电源适配器的输入电流经过终端内的各器件之后最终达到电池的两端，当终端在电池两端检测电源适配器的输入电压时，电源适配器的输入电压和输出电压的差值可以指示整个充电回路的阻抗。
可选地，作为一个实施例，终端10还包括：报警装置，用于当充电回路的阻抗异常时，产生报警信号。该报警装置可以是声音报警装置，也可以是指示灯。以充电回路的阻抗是充电接口中的线路的阻抗为例，当报警装置报警时，可以表示该充电接口的接触不良，提醒用户重新连接电源适配器和终端之间的充电接口。
可选地，作为一个实施例，当充电回路的阻抗发生异常时，通信单元13向电源适配器发送充电保护指示信息，指示电源适配器控制充电回路进入保护状态。
本发明实施例中，当充电回路的阻抗发生异常时，终端不但主动控制充电回路进入保护状态，而且通知电源适配器控制充电回路进入保护状态，这样一来，即使终端的异常处理单元失效，无法控制充电回路进入保护状态，仍然可以由电源适配器控制充电回路进入保护状态，进一步提高了充电过程的安全性。
可选地，作为一个实施例，充电接口12包括电源线和数据线，终端10通过充电接口12与电源适配器形成充电回路，为电池充电，具体包括：终端10通过充电接口12中的电源线与电源适配器形成充电回路，为电池11充电；通信单元13，用于当电源适配器10为终端充电时，从终端接收电压指示信息，具体包括：通信单元13通过充电接口12中的数据线从电源适配器接收电压指示信息。
例如，充电接口是USB(Universal Serial Bus，通用串行总线)接口或micro USB接口，上述电源线为USB接口中的电源线，如+5V和-5V电源线；上述数据线为USB接口中的数据线，如D+线和D-线。
图2是本发明实施例的电源适配器的示意性框图。图2的电源适配器20 包括功率转换单元21和充电接口22，功率转换单元21通过充电接口22与终端形成充电回路，为终端的电池充电，电源适配器20还包括：检测单元23、通信单元24和异常处理单元25，其中，
当电源适配器20为终端充电时，检测单元23检测电源适配器的输出电压；
通信单元24向终端发送电压指示信息，电压指示信息指示检测单元23检测到的电源适配器的输出电压；
当终端基于电源适配器20的输出电压以及电源适配器20的输入电压的差值，确定充电回路的阻抗发生异常时，通信单元24从终端接收充电保护指示信息；
异常处理单元25根据充电保护指示信息的指示控制充电回路进入保护状态。
本发明实施例中，电源适配器与终端在充电过程中通信，向终端发送自己检测到的电源适配器的输出电压，以便终端根据电源适配器的输出电压和自己检测到的电源适配器的输入电压的差值，确定充电回路的阻抗是否发生异常，当充电回路的阻抗发生异常时，电源适配器从终端接收充电保护指示信息，然后控制充电回路进入保护状态，提高了充电过程的安全性。
可选地，作为一个实施例，充电接口22包括电源线和数据线，功率转换单元21通过充电接口22与终端形成充电回路，为终端的电池充电，具体包括：功率转换单元21通过充电接口22中的电源线与终端形成充电回路，为终端的电池充电；通信单元24向终端发送电压指示信息，具体包括：通信单元24通过充电接口22中的数据线向终端发送电压指示信息。
例如，充电接口是USB(Universal Serial Bus，通用串行总线)接口或micro USB接口，上述电源线为USB接口中的电源线，如+5V和-5V电源线；上述数据线为USB接口中的数据线，如D+线和D-线。
需要说明的是，本发明实施例对电源适配器检测其输出电压的位置，以及终端检测电源适配器的输入电压的位置不作具体限定，可以根据不同的需求而定。
例如，电源适配器的输入电压和电源适配器的输出电压的检测位置分别位于充电接口的两端，充电回路的阻抗具体指充电接口中的线路的阻抗。上述电源适配器的输入电压和电源适配器的输出电压的检测位置分别位于充 电接口的两端具体是指：电源适配器检测输出电压的位置和终端检测电源适配器输入电压的位置靠近连接二者的充电接口，当二者检测到的电压的压降异常时，可以推断出是由于充电接口中的线路异常导致的。
又如，电源适配器的输入电压的检测位置位于电池的两端，充电回路的阻抗具体指从电源适配器到终端的电池之间的线路的阻抗。由于电源适配器的输入电流经过终端内的各器件之后最终达到电池的两端，当终端在电池两端检测电源适配器的输入电压时，电源适配器的输入电压和输出电压的差值可以指示整个充电回路的阻抗是否发生异常。
可选地，作为一个实施例，电源适配器20还包括：报警装置，用于当充电回路的阻抗异常时，产生报警信号。该报警装置可以是声音报警装置，也可以是指示灯。以充电回路的阻抗是充电接口中的线路的阻抗为例，当报警装置报警时，表示该充电接口的接触不良，提醒用户重新连接电源适配器和终端之间的充电接口。
图3是本发明实施例的处理充电回路阻抗异常的方法的示意性流程图。应理解，图3的方法可以由图1所示的终端执行，为避免重复，此处不再详述。图3的方法包括：
310、当电源适配器为终端充电时，终端从电源适配器接收电压指示信息，电压指示信息指示电源适配器的输出电压；
320、终端检测电源适配器的输入电压；
330、终端根据输入电压和输出电压的差值，确定充电回路的阻抗是否异常，当充电回路的阻抗异常时，控制充电回路进入保护状态。
本发明实施例中，终端通过与电源适配器之间的通信得到电源适配器的输出电压，终端基于电源适配器的输出电压与自身检测到的电源适配器的输入电压的差值，确定充电回路的阻抗是否发生异常，当充电回路的阻抗发生异常时，控制充电回路进入保护状态，提高了充电过程的安全性。
可选地，作为一个实施例，终端根据输入电压和输出电压的差值，确定充电回路的阻抗是否异常，当充电回路的阻抗异常时，控制充电回路进入保护状态，包括：终端根据差值，确定阻抗的等级；终端根据阻抗的等级，控制充电回路进入该等级对应的保护状态。
可选地，作为一个实施例，电源适配器的输入电压和电源适配器的输出电压的检测位置分别位于充电接口的两端，充电回路的阻抗具体指充电接口 中的线路的阻抗。
可选地，作为一个实施例，电源适配器的输入电压的检测位置位于终端的电池的两端，充电回路的阻抗具体指从电源适配器到终端的电池之间的线路的阻抗。
可选地，作为一个实施例，图3的方法还包括：当充电回路的阻抗异常时，终端产生报警信号。
可选地，作为一个实施例，图3的方法还包括：当充电回路的阻抗发生异常时，终端向电源适配器发送充电保护指示信息，指示电源适配器控制充电回路进入保护状态。
可选地，作为一个实施例，充电接口包括电源线和数据线，电源适配器通过电源线为终端充电，终端从电源适配器接收电压指示信息，包括：终端通过充电接口中的数据线从电源适配器接收电压指示信息。
图4是本发明实施例的处理充电回路阻抗异常的方法的示意性流程图。应理解，图4的方法可以由图2中的电源适配器执行，为避免重复，此处不再详述。图4的方法包括：
410、当电源适配器为终端充电时，电源适配器检测电源适配器的输出电压；
420、电源适配器向终端发送电压指示信息，电压指示信息指示电源适配器检测到的电源适配器的输出电压；
430、当终端基于电源适配器的输出电压以及电源适配器的输入电压的差值，确定充电回路的阻抗发生异常时，电源适配器从终端接收充电保护指示信息；
440、电源适配器根据充电保护指示信息的指示控制充电回路进入保护状态。
本发明实施例中，电源适配器与终端在充电过程中通信，向终端发送自己检测到的电源适配器的输出电压，以便终端根据电源适配器的输出电压和自己检测到的电源适配器的输入电压的差值，确定充电回路的阻抗是否发生异常，当充电回路的阻抗发生异常时，电源适配器从终端接收充电保护指示信息，然后控制充电回路进入保护状态，提高了充电过程的安全性。
可选地，作为一个实施例，充电接口包括电源线和数据线，电源适配器通过充电接口中的电源线为终端充电，电源适配器向终端发送电压指示信 息，包括：电源适配器通过充电接口中的数据线向终端发送电压指示信息。
可选地，作为一个实施例，电源适配器的输入电压和电源适配器的输出电压的检测位置分别位于充电接口的两端，充电回路的阻抗具体指充电接口中的线路的阻抗。
可选地，作为一个实施例，电源适配器的输入电压的检测位置位于终端的电池的两端，充电回路的阻抗具体指从电源适配器到终端的电池之间的线路的阻抗。
可选地，作为一个实施例，图4的方法还包括：当充电回路的阻抗异常时，产生报警信号。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本发明的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本发明各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本发明各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应所述以权利要求的保护范围为准。

Claims (24)

  1. 一种终端，包括电池和充电接口，所述终端通过所述充电接口与电源适配器形成充电回路，为所述电池充电，其特征在于，所述终端还包括：
    通信单元，用于当所述电源适配器为所述终端充电时，从所述电源适配器接收电压指示信息，所述电压指示信息指示所述电源适配器的输出电压；
    检测单元，用于检测所述电源适配器的输入电压；
    异常处理单元，用于根据所述输入电压和所述输出电压的差值，确定所述充电回路的阻抗是否异常，当所述充电回路的阻抗异常时，控制所述充电回路进入保护状态。
  2. 如权利要求1所述的终端，其特征在于，所述异常处理单元，用于根据所述输入电压和所述输出电压的差值，确定所述充电回路的阻抗是否异常，当所述充电回路的阻抗异常时，控制所述充电回路进入保护状态，具体包括：
    所述异常处理单元根据所述差值，确定所述阻抗的等级；
    所述异常处理单元根据所述阻抗的等级，控制所述充电回路进入该等级对应的保护状态。
  3. 如权利要求1或2所述的终端，其特征在于，所述电源适配器的输入电压和所述电源适配器的输出电压的检测位置分别位于所述充电接口的两端，所述充电回路的阻抗具体指所述充电接口中的线路的阻抗。
  4. 如权利要求1或2所述的终端，其特征在于，所述电源适配器的输入电压的检测位置位于所述终端的电池的两端，所述充电回路的阻抗具体指从所述电源适配器到所述终端的电池之间的线路的阻抗。
  5. 如权利要求1-4中任一项所述的终端，其特征在于，所述终端还包括：
    报警装置，用于当所述充电回路的阻抗异常时，产生报警信号。
  6. 如权利要求1-5中任一项所述的终端，其特征在于，当所述充电回路的阻抗发生异常时，所述通信单元向所述电源适配器发送充电保护指示信息，指示所述电源适配器控制所述充电回路进入保护状态。
  7. 如权利要求1-6中任一项所述的终端，其特征在于，所述充电接口包括电源线和数据线，
    所述终端通过所述充电接口与电源适配器形成充电回路，为所述电池充 电，具体包括：
    所述终端通过所述充电接口中的电源线与所述电源适配器形成充电回路，为所述电池充电；
    所述通信单元从所述电源适配器接收电压指示信息，具体包括：
    所述通信单元通过所述充电接口中的数据线从所述电源适配器接收所述电压指示信息。
  8. 一种电源适配器，包括功率转换单元和充电接口，所述功率转换单元通过所述充电接口与终端形成充电回路，为所述终端的电池充电，其特征在于，所述电源适配器还包括：检测单元、通信单元和异常处理单元，其中，
    当所述电源适配器为所述终端充电时，所述检测单元检测所述电源适配器的输出电压；
    所述通信单元向所述终端发送电压指示信息，所述电压指示信息指示所述检测单元检测到的所述电源适配器的输出电压；
    当所述终端基于所述电源适配器的输出电压以及所述电源适配器的输入电压的差值，确定所述充电回路的阻抗发生异常时，所述通信单元从所述终端接收充电保护指示信息；
    所述异常处理单元根据所述充电保护指示信息的指示控制所述充电回路进入保护状态。
  9. 如权利要求8所述的电源适配器，其特征在于，所述充电接口包括电源线和数据线，
    所述功率转换单元通过所述充电接口与终端形成充电回路，为所述终端的电池充电，具体包括：
    所述功率转换单元通过所述充电接口中的电源线与终端形成充电回路，为所述终端的电池充电；
    所述通信单元向所述终端发送电压指示信息，具体包括：
    所述通信单元通过所述充电接口中的数据线向所述终端发送所述电压指示信息。
  10. 如权利要求8或9所述的电源适配器，其特征在于，所述电源适配器的输入电压和所述电源适配器的输出电压的检测位置分别位于所述充电接口的两端，所述充电回路的阻抗具体指所述充电接口中的线路的阻抗。
  11. 如权利要求8或9所述的电源适配器，其特征在于，所述电源适配 器的输入电压的检测位置位于所述终端的电池的两端，所述充电回路的阻抗具体指从所述电源适配器到所述终端的电池之间的线路的阻抗。
  12. 如权利要求8-11中任一项所述的电源适配器，其特征在于，所述电源适配器还包括：
    报警装置，用于当所述充电回路的阻抗异常时，产生报警信号。
  13. 一种处理充电回路阻抗异常的方法，其特征在于，包括：
    当电源适配器为终端充电时，所述终端从所述电源适配器接收电压指示信息，所述电压指示信息指示所述电源适配器的输出电压；
    所述终端检测所述电源适配器的输入电压；
    所述终端根据所述输入电压和所述输出电压的差值，确定所述充电回路的阻抗是否异常，当所述充电回路的阻抗异常时，控制所述充电回路进入保护状态。
  14. 如权利要求13所述的方法，其特征在于，所述终端根据所述输入电压和所述输出电压的差值，确定所述充电回路的阻抗是否异常，当所述充电回路的阻抗异常时，控制所述充电回路进入保护状态，包括：
    所述终端根据所述差值，确定所述阻抗的等级；
    所述终端根据所述阻抗的等级，控制所述充电回路进入该等级对应的保护状态。
  15. 如权利要求13或14所述的方法，其特征在于，所述电源适配器的输入电压和所述电源适配器的输出电压的检测位置分别位于所述充电接口的两端，所述充电回路的阻抗具体指所述充电接口中的线路的阻抗。
  16. 如权利要求13或14所述的方法，其特征在于，所述电源适配器的输入电压的检测位置位于所述终端的电池的两端，所述充电回路的阻抗具体指从所述电源适配器到所述终端的电池之间的线路的阻抗。
  17. 如权利要求13-16中任一项所述的方法，其特征在于，所述方法还包括：
    当所述充电回路的阻抗异常时，所述终端产生报警信号。
  18. 如权利要求13-17中任一项所述的方法，其特征在于，所述方法还包括：
    当所述充电回路的阻抗发生异常时，所述终端向所述电源适配器发送充电保护指示信息，指示所述电源适配器控制所述充电回路进入保护状态。
  19. 如权利要求13-18中任一项所述的方法，其特征在于，所述充电接口包括电源线和数据线，所述电源适配器通过所述电源线为所述终端充电，
    所述终端从所述电源适配器接收电压指示信息，包括：
    所述终端通过所述充电接口中的数据线从所述电源适配器接收所述电压指示信息。
  20. 一种处理充电回路阻抗异常的方法，其特征在于，包括：
    当电源适配器为终端充电时，所述电源适配器检测所述电源适配器的输出电压；
    所述电源适配器向所述终端发送电压指示信息，所述电压指示信息指示所述电源适配器检测到的所述电源适配器的输出电压；
    当所述终端基于所述电源适配器的输出电压以及所述电源适配器的输入电压的差值，确定所述充电回路的阻抗发生异常时，所述电源适配器从所述终端接收充电保护指示信息；
    所述电源适配器根据所述充电保护指示信息的指示控制所述充电回路进入保护状态。
  21. 如权利要求20所述的方法，其特征在于，所述充电接口包括电源线和数据线，所述电源适配器通过所述充电接口中的电源线为所述终端充电，
    所述电源适配器向所述终端发送电压指示信息，包括：
    所述电源适配器通过所述充电接口中的数据线向所述终端发送所述电压指示信息。
  22. 如权利要求20或21所述的方法，其特征在于，所述电源适配器的输入电压和所述电源适配器的输出电压的检测位置分别位于所述充电接口的两端，所述充电回路的阻抗具体指所述充电接口中的线路的阻抗。
  23. 如权利要求20或21所述的方法，其特征在于，所述电源适配器的输入电压的检测位置位于所述终端的电池的两端，所述充电回路的阻抗具体指从所述电源适配器到所述终端的电池之间的线路的阻抗。
  24. 如权利要求20-23中任一项所述的方法，其特征在于，所述方法还包括：
    当所述充电回路的阻抗异常时，产生报警信号。
PCT/CN2015/070460 2014-01-28 2015-01-09 电源适配器、终端和处理充电回路阻抗异常的方法 WO2015113462A1 (zh)

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