CHARGE METHOD, ADAPTER AND MOBILE TERMINAL
A charge method, an adapter and a mobile terminal are provided. The adapter negotiates with the mobile terminal about the charging mode and the charging current of the battery. When determining to charge the battery in the quick charging mode, the adapter adopts the unidirectional pulse current to perform a quick charge on the battery using the negotiated charging current.
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The present application is a continuation application of International Application No. PCT/CN2016/073679, filed with the State Intellectual Property Office of P. R. China on Feb. 5, 2016, the entirety contents of which are incorporated herein by reference.
TECHNICAL FIELDThe present disclosure generally relates to mobile terminal field, and more particularly, to a charge method, an adapter and a mobile terminal.
BACKGROUNDNowadays, mobile terminals (such as smart phones) are more and more favored by customers. However, since the power consumption of the mobile terminal is too large, it is required to charge the mobile terminal frequently.
An existing mobile terminal is typically supplied with power from a lithium battery. If the battery in the mobile terminal is charged with the above charge method, a lithium precipitation may occur frequently, which causes decreased service life of the battery.
In order to make technique solutions according to embodiments of the present disclosure more apparent, drawings needed to be used in descriptions of the embodiments will be illustrated in the following. Obviously, the drawings to be illustrated in the following only represent some embodiments of the present disclosure, and other drawings can be obtained according these drawings by those having ordinary skills in the related art without making creative labors.
In the related art, most adapters are non-intelligent adapters which simply convert the mains voltage into working voltage suitable for charging a battery of a mobile terminal. In order to improve safety and charging speed during the charging process, embodiments of the present disclosure may adopt an intelligent adapter, for example, the adapter may be configured with a micro controller unit (MCU) internally. The MCU may communicate with a mobile terminal, so as to negotiate with the mobile terminal about a charging mode and charging parameters (such as, charging current, charging voltage) and to control the charging process.
The charging mode supported by the adapter and/or the mobile terminal may include a conventional charging mode and a quick charging mode. The charging speed in the quick charging mode is greater than that in the conventional charging mode (for example, charging current in the quick charging mode is greater than that in the conventional charging mode). Generally, the conventional charging mode may be understood as a charging mode in which a rated output voltage is 5V and a rated output current is less than or equal to 2.5 A. In addition, in the conventional charging mode, output ports D+ and D− of the adapter may be short-circuited. However, the situation in the quick charging mode according to the present disclosure is different. In the quick charging mode according to the present disclosure, the adapter may employ the D+ and D− output ports to conduct communication and data exchange with the mobile terminal. The charging current in the quick charging mode may be greater than 2.5 A, for example, may be 4.5 A or more. However, the conventional quick charging mode is not limited in the present disclosure. As long as the adapter supports two charging modes and the charging speed (or current) in one charging mode is greater than that in the other charging mode, the charging mode with a slower charging speed may be configured as the conventional charging mode.
At block S310, after the adapter is coupled with the mobile terminal via a charging interface, the adapter communicates with the mobile terminal to determine the charging mode.
The charging interface may be a common USB interface, or may be a micro USB interface, or other kinds of charging interfaces. Taking the USB interface as an example, the power wire in the USB interface may include a Vbus wire and a ground wire. The data wire in the charging interface may include at least one of a D+ wire and a D− wire in the charging interface. The power wire in the charging interface is configured to charge a battery, and the data wire in the charging interface is used for communication between the adapter and the mobile terminal.
At block S320, when it is determined to charge the battery in the quick charging mode, the adapter communicates with the mobile terminal to determine a charging current corresponding to the quick charging mode.
At block S330, according to the charging current corresponding to the quick charging mode, the adapter adopts a unidirectional pulse output current to perform a first quick charging on the battery.
In an embodiment, a peak value of an initial waveform (for example, the first waveform, or first several waveforms) of the unidirectional pulse output current is equal to a current value of the charging current corresponding to the quick charging mode. In another embodiment, a mean value of an initial waveform of the unidirectional pulse output current is equal to a current value of the charging current corresponding to the quick charging mode.
In this solution, the adapter negotiates with the mobile terminal about the charging mode and the charging current of the battery. When determining to charge the battery in the quick charging mode, the adapter adopts the unidirectional pulse output current to perform a quick charging on the battery, based on the negotiated charging current. The current intensity of the unidirectional pulse output current changes periodically. Compared with constant current, the unidirectional pulse output current may reduce the possibility of lithium precipitation and improve service life of the battery. In addition, compared with constant current, the unidirectional pulse output current may reduce the possibility and intensity of electric arc at a contact of the charging interface, and improve service life of the charging interface.
Further, the usage of unidirectional pulse output current may decrease the complexity of the adapter structure and reduce the bulk of the adapter. Specifically, in the related art, in order to acquire stable current, the adapter typically includes a filter circuit. Since an electrolytic capacitor in the filter circuit has a great bulk, the bulk of the entire adapter is large, such that it is inconvenient to carry the adapter. In this solution, since the adapter outputs the unidirectional pulse current rather than constant current, the adapter may directly convert the power after rectification and output the current fluctuating in pulse to the system without the filter circuit, which may simplify the adapter structure.
In addition, the current with changing intensity may relief the heating problem of the adapter during the charging. Compared with constant current, the current with changing intensity is beneficial to reduce polarization effect of the battery, improve the charging speed and reduce the heat emitted from the battery.
It can be understood that, adopting by the adapter the unidirectional pulse output current to perform the first quick charging on the battery may refer to that, the adapter adopts the unidirectional pulse output current to charge the battery in the quick charging mode, according to the charging current corresponding to the quick charging mode.
It should be understood that, the unidirectional pulse output current has features that the direction is constant while the intensity varies over time.
In an embodiment, before the adapter adopts the unidirectional pulse output current to perform the first quick charging on the battery, the adapter may further communicate with the mobile terminal to determine a charging voltage corresponding to the quick charging mode, and adopts a unidirectional pulse output voltage to perform a second quick charging on the battery, according to the charging voltage corresponding to the quick charging mode.
In an embodiment, a peak value of an initial waveform of the unidirectional pulse output voltage is equal to a voltage value of the charging voltage corresponding to the quick charging mode. In another embodiment, a mean value of an initial waveform of the unidirectional pulse output voltage is equal to a voltage value of the charging voltage corresponding to the quick charging mode.
It should be understood that, before the adapter charges the battery in the mobile terminal, the adapter may first negotiate with the mobile terminal about the charging voltage and the charging current corresponding to the quick charging mode. After the charging voltage and the charging current corresponding to the quick charging mode are determined, the adapter may charge the battery according to the negotiated charging voltage and charging current.
At block S410, after the mobile terminal is coupled with the adapter via the charging interface, the mobile terminal communicates with the adapter to determine the charging mode.
At block S420, the mobile terminal communicates with the adapter to determine a charging current corresponding to the quick charging mode.
At block S430, the mobile terminal receives a unidirectional pulse output current from the adapter so as to perform a first quick charging on the battery, in which the unidirectional pulse output current is determined by the adapter according to the charging current corresponding to the quick charging mode.
With respect to specific implements of the charge method in
In order to initiate and adopt the quick charging mode, the adapter may perform a quick charging communication process with the mobile terminal, for example, by one or more handshakes, so as to realize a quick charge of the battery. The quick charging communication process and respective stages contained in the quick charging process will be described below in detail with reference to
As illustrated in
Stage 1:
The mobile terminal may detect a type of the adapter through the D+ and D−. If it is detected that the adapter is a non-USB-type charging device, current absorbed by the mobile terminal may be greater than a preset current threshold I2 (for example, 1A). If the adapter detects that current outputted from the adapter is greater than or equal to I2 within a preset time period (for example, a continuous time period T1), the adapter considers that the terminal has completed identifying the type of the adapter, and then initiates handshake communication between the adapter and the mobile terminal, and sends an instruction 1 to ask the terminal whether to initiate the quick charging mode (or flash charging).
If the adapter receives a reply instruction indicating that the mobile terminal does not agree to initiate the quick charging mode from the mobile terminal, then the output current of the adapter is detected again. If the output current of the adapter is still greater than or equal to I2, then the adapter sends a request for asking the mobile terminal whether to initiate the quick charging mode again, and the above steps in stage 1 are repeated, until the mobile terminal returns a reply indicating that the mobile terminal agrees to initiate the quick charging mode or the output current of the adapter is no longer greater than or equal to I2.
After the mobile terminal agrees to initiate the quick charging mode, the quick charging mode is initiated, and then the quick charging communication process goes into stage 2.
Stage 2:
For the output voltage of the adapter, there may be several grades. The adapter sends an instruction 2 to the mobile terminal for asking the mobile terminal whether the output voltage of the adapter matches (or suitable, i.e., suitable to be the charging voltage in the quick charging mode).
If the mobile terminal returns a reply indicating that the output voltage of the adapter is higher, lower or suitable, for example the adapter receives a feedback indicating that the output voltage of the adapter is higher or lower from the mobile terminal, then the adapter adjusts the output voltage of the adapter by one grade, and sends the instruction 2 to the mobile terminal again for asking the mobile terminal whether the output voltage of the adapter matches.
The above steps in stage 2 are repeated, until the mobile terminal returns a reply indicating that the output voltage of the adapter is at a matching grade, and then the quick charging communication process goes into stage 3.
Stage 3:
After the adapter receives a feedback indicating that the output voltage of the adapter matches from the mobile terminal, the adapter sends an instruction 3 to the mobile terminal for inquiring a maximum charging current currently supported by the mobile terminal, the mobile terminal returns the maximum charging current currently supported by itself to the adapter, and then the quick charging communication process goes into stage 4.
Stage 4:
The adapter receives a feedback indicating the maximum charging current currently supported by the mobile terminal from the mobile terminal, and then the adapter may configure the output current thereof as a specified value and output the current. Then, the quick charging communication process goes into a constant current stage.
Stage 5:
When the quick charging communication process goes into the constant current stage, the adapter sends an instruction 4 at intervals to the mobile terminal for inquiring a voltage of the battery, the mobile terminal may feedback the voltage of the battery in the mobile terminal to the adapter, and the adapter may judge, according to the feedback indicating the voltage of the battery in the mobile terminal from the mobile terminal, whether a poor contact occurs in the USB interface or whether to decrease the charging current value of the mobile terminal. If the adapter determines that the poor contact occurs in the USB interface, the adapter sends an instruction 5, and then the adapter is reset such that the quick charging communication process goes into stage 1.
In an embodiment, in stage 1, when the mobile terminal replies to the instruction 1, data in the reply instruction may carry data (or information) on the path impedance of the mobile terminal, and the data on the path impedance of the mobile terminal may be used in stage 5 to judge whether the poor contact occurs in the USB interface.
In an embodiment, in stage 2, the time period from when the mobile terminal agrees to initiate the quick charging mode to when the adapter adjusts the voltage to a suitable value may be controlled to be in a certain range, and if the time period exceeds a preset period, the mobile terminal may determine that a request exception occurs and then the mobile terminal is reset quickly.
In an embodiment, in stage 2, the mobile terminal may return a feedback indicating that the output voltage of the adapter is suitable to the adapter when the output voltage of the adapter is adjusted to a value which is higher than the voltage of the battery by ΔV (ΔV is about 200-500 mV).
In an embodiment, in stage 4, the adjusting speed of the output current value of the adapter may be controlled to be in a certain range, such that an unusual interruption of the quick charge due to the too fast adjusting speed can be avoided.
In an embodiment, in stage 5, i.e., the constant current stage, the variation amplitude of the output current value of the adapter may be controlled to be within 5%.
In an embodiment, in stage 5, the adapter monitors the impedance of a charging loop in real time, i.e., the adapter monitors the impedance of the entire charging loop by measuring the output voltage of the adapter, the charging current and the read voltage of the battery in the terminal. If detected impedance of the charging loop>path impedance of the terminal+impedance of the quick charging data wire, it may be considered that a poor contact occurs in the USB interface, and then the quick charge is reset.
In an embodiment, after the quick charging mode is initiated, the time interval of communications between the adapter and the mobile terminal may be controlled to be in a certain range, such that a reset of quick charge can be avoided.
In an embodiment, the termination of the quick charging mode (or quick charging process) may include a recoverable termination or an unrecoverable termination.
For example, if the mobile terminal detects that the battery is charged fully or a poor contact occurs in the USB interface, the quick charge is terminated and reset, and the quick charging communication process goes into stage 1. If the mobile terminal does not agree to initiate the quick charging mode, the quick charging communication process would not go into stage 2, and this termination of the quick charging process may be considered as an unrecoverable termination.
For example, if an exception occurs in the communication between the mobile terminal and the adapter, the quick charge is terminated and reset, and the quick charging communication process goes into stage 1. After requirements for stage 1 are met, the mobile terminal agrees to initiate the quick charging mode to recover the quick charging process, and this termination of the quick charging process may be considered as a recoverable termination.
For example, if the mobile terminal detects that an exception occurs in the battery, the quick charging is terminated and reset, and the quick charging communication process goes into stage 1. After the quick charging communication process goes into stage 1, the mobile terminal does not agree to initiate the quick charging mode. Till the battery returns to normal and the requirements for stage 1 are met, the mobile terminal agrees to initiate the quick charging mode to recover the quick charging process, and this termination of the quick charging process may be considered as a recoverable termination.
An example of quick charging process will be described below with reference to
It can be seen from
The quick charging process between the adapter and the mobile terminal are described above in detail with reference to
In this way, after the adapter acquires the current from the mains supply and rectifies the current, the adapter directly outputs unidirectional pulse current/voltage (for example, half-wave voltage/current with the same frequency as that at the AC terminal, which may be referred to as steamed buns voltage/current) at the output terminal without filtering of the electrolytic capacitor. The unidirectional pulse current/voltage has the same frequency as the power supply grid, for example, may be frequently-used 50 Hz or 60 Hz, however, the present disclosure is not limited thereto.
The quick charging communication process is described above with reference to
In
The charge method according to embodiments of the present disclosure is described above in detail with reference to
In an embodiment, during the quick charge, a peak value of an initial waveform of the unidirectional pulse output current is equal to a current value of the charging current corresponding to the quick charging mode.
In an embodiment, during the quick charge, a mean value of an initial waveform of the unidirectional pulse output current is equal to a current value of the charging current corresponding to the quick charging mode.
In an embodiment, the quick charge includes a current falling process. During the current falling process, a peak value of a latter one in two adjacent waveforms of the unidirectional pulse output current is less than that of a former one in the two adjacent waveforms.
In an embodiment, the quick charge includes a current falling process. The current falling process is divided into a plurality of stages including a first stage and a second stage adjacent to the first stage. The first stage is earlier than the second stage. A waveform of the unidirectional pulse output current remains constant within each of the plurality of stages. A peak value of a waveform of the unidirectional pulse output current in the second stage is less than that of a waveform of the unidirectional pulse output current in the first stage.
In an embodiment, the communication control circuit 710 is further configured to communicate with the mobile terminal to determine a charging voltage corresponding to the quick charging mode, under a situation that the adapter 700 determines to charge the battery in the quick charging mode, and to adopt, according to the charging voltage corresponding to the quick charging mode, a unidirectional pulse output voltage to perform a quick charge on the battery.
In an embodiment, during the quick charge, a peak value of an initial waveform of the unidirectional pulse output voltage is equal to a voltage value of the charging voltage corresponding to the quick charging mode.
In an embodiment, during the quick charge, a mean value of an initial waveform of the unidirectional pulse output voltage is equal to a voltage value of the charging voltage corresponding to the quick charging mode.
In an embodiment, the unidirectional pulse output current is a current outputted from a rectifying circuit in the adapter 700 without a filtering.
In an embodiment, the frequency f of the unidirectional pulse output current of the adapter 700 satisfies: 50 Hz≦f≦60 Hz.
In an embodiment, during the quick charge, a peak value of an initial waveform of the unidirectional pulse output current is equal to a current value of the charging current corresponding to the quick charging mode.
In an embodiment, during the quick charge, a mean value of an initial waveform of the unidirectional pulse output current is equal to a current value of the charging current corresponding to the quick charging mode.
In an embodiment, the quick charge includes a current falling process. During the current falling process, a peak value of a latter one in two adjacent waveforms of the unidirectional pulse output current is less than that of a former one in the two adjacent waveforms.
In an embodiment, the quick charge includes a current falling process. The current falling process is divided into a plurality of stages including a first stage and a second stage adjacent to the first stage. The first stage is earlier than the second stage. A waveform of the unidirectional pulse output current within each of the plurality of stages remains constant. A peak value of a waveform of the unidirectional pulse output current in the second stage is less than that of a waveform of the unidirectional pulse output current in the first stage.
In an embodiment, the communication control circuit 810 is further configured to communicate with the adapter to determine a charging voltage corresponding to the quick charging mode, under a situation of determining to charge the battery in the quick charging mode, and to receive a unidirectional pulse output voltage from the adapter so as to perform a quick charge on the battery, in which the unidirectional pulse output voltage is determined by the adapter according to the charging voltage corresponding to the quick charging mode.
In an embodiment, during the quick charge, a peak value of an initial waveform of the unidirectional pulse output voltage is equal to a voltage value of the charging voltage corresponding to the quick charging mode.
In an embodiment, during the quick charge, a mean value of an initial waveform of the unidirectional pulse output voltage is equal to a voltage value of the charging voltage corresponding to the quick charging mode.
In an embodiment, the unidirectional pulse output current is a current outputted from a rectifying circuit in the adapter without a filtering.
In an embodiment, the frequency f of the unidirectional pulse output current of the adapter 700 satisfies: 50 Hz≦f≦60 Hz.
Those skilled in the art can be aware that, units and algorithm steps in respective examples described with reference to embodiments disclosed in the present disclosure can be realized by electronic hardware or combination of computer software and electronic hardware. Executing these functions in hardware or software depends on particular applications and design constraint conditions of the technical solutions. Technology professionals can use different methods to realize the described functions for each particular application, which should be regarded as being within the scope of the present disclosure.
Those skilled in the art can understand clearly that, for convenience and simplicity of description, specific working process of the above system, devices and units may refer to corresponding process in the above method embodiments, which will not be elaborated herein.
It should be understood that, the system, devices and method disclosed in several embodiments provided by the present disclosure can be realized in any other manner. For example, the device embodiments described above can be merely exemplary, for example, the units are just divided according to logic functions. In practical implementation, the units can be divided in other manners, for example, multiple units or components can be combined or integrated into another system, or some features can be omitted or not executed. In addition, the mutual coupling or direct coupling or communication connection described or discussed can be via some interfaces, and indirect coupling or communication connection between devices or units may be electrical, mechanical or of other forms.
The units illustrated as separate components can be or not be separated physically, and components described as units can be or not be physical units, i.e., can be located at one place, or can be distributed onto multiple network units. It is possible to select some or all of the units according to actual needs, for realizing the objective of embodiments of the present disclosure.
In addition, respective functional units in respective embodiments of the present disclosure can be integrated into one processing unit, or can be present as separate physical entities. It is also possible that two or more than two units are integrated into one unit.
If the functions are realized in form of functional software units and are sold or used as separate products, they can be stored in a computer readable storage medium. Based on this understanding, the parts of the technical solutions or the essential parts of the technical solutions (i.e. the parts making a contribution to the related art) can be embodied in form of software product, which is stored in a storage medium, and includes several instruction used for causing a computer device (for example, a personal computer, a server or a network device) to execute all or part of steps in the methods described in respective embodiments of the present disclosure. The above storage medium may be any medium capable of storing program codes, including a USB flash disk, a mobile hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a disc, or a light disk.
The forgoing description is only directed to preferred embodiments of the present disclosure, but not used to limit the present disclosure. All modifications, equivalents, variants and improvements made within the spirit and principle of the present disclosure shall fall within the protection scope of the present disclosure. Thus, the protection scope of the present disclosure shall be limited by the protection scope of the claims.
Claims
1. A charge method, comprising:
- after an adapter is coupled with a mobile terminal via a charging interface, communicating, by the adapter, with the mobile terminal to determine a charging mode, wherein the charging mode comprises a quick charging mode and a conventional charging mode, in which a charging speed in the quick charging mode is greater than that in the conventional charging mode;
- under a situation of determining to charge the battery in the quick charging mode, communicating, by the adapter, with the mobile terminal to determine a charging current corresponding to the quick charging mode; and
- adopting, by the adapter according to the charging current corresponding to the quick charging mode, a unidirectional pulse output current to perform a quick charge on the battery.
2. The method according to claim 1, wherein, during the quick charge, a peak value of an initial waveform of the unidirectional pulse output current is equal to a current value of the charging current corresponding to the quick charging mode, or a mean value of an initial waveform of the unidirectional pulse output current is equal to a current value of the charging current corresponding to the quick charging mode.
3. The method according to claim 1, wherein, the quick charge comprises a current falling process, and in the current falling process, a peak value of a latter one in two adjacent waveforms of the unidirectional pulse output current is less than that of a former one in the two adjacent waveforms.
4. The method according to claim 1, wherein, the quick charge comprises a current falling process, the current falling process is divided into a plurality of stages comprising a first stage and a second stage adjacent to the first stage, in which the first stage is earlier than the second stage, a waveform of the unidirectional pulse output current remains constant within each of the plurality of stages, a peak value of a waveform of the unidirectional pulse output current in the second stage is less than that of a waveform of the unidirectional pulse output current in the first stage.
5. The method according to claim 1, wherein, before adopting, by the adapter according to the charging current corresponding to the quick charging mode, a unidirectional pulse output current to perform a quick charge on the battery, the method further comprises:
- under a situation that the adapter determines to charge the battery in the quick charging mode, communicating, by the adapter, with the mobile terminal to determine a charging voltage corresponding to the quick charging mode; and
- adopting, by the adapter according to the charging voltage corresponding to the quick charging mode, a unidirectional pulse output voltage to perform a quick charge on the battery.
6. The method according to claim 5, wherein, during the quick charge, a peak value of an initial waveform of the unidirectional pulse output voltage is equal to a voltage value of the charging voltage corresponding to the quick charging mode, or a mean value of an initial waveform of the unidirectional pulse output voltage is equal to a voltage value of the charging voltage corresponding to the quick charging mode.
7. The method according to claim 1, wherein, the unidirectional pulse output current is a current outputted from a rectifying circuit in the adapter without a filtering, and/or a pulse frequency of the unidirectional pulse output current is same with a frequency of an alternating current power supply grid.
8. An adapter, comprising a communication control circuit and a charging circuit, wherein,
- the communication control circuit is configured to: communicate with a mobile terminal to determine a charging mode, after the adapter is coupled with the mobile terminal via a charging interface, wherein the charging mode comprises a quick charging mode and a conventional charging mode, in which a charging speed in the quick charging mode is greater than that in the conventional charging mode; communicate with the mobile terminal to determine a charging current corresponding to the quick charging mode, under a situation of determining to charge the battery in the quick charging mode; and adopt, according to the charging current corresponding to the quick charging mode, a unidirectional pulse output current to perform a quick charge on the battery via the charging circuit.
9. The adapter according to claim 8, wherein, during the quick charge, a peak value of an initial waveform of the unidirectional pulse output current is equal to a current value of the charging current corresponding to the quick charging mode, or a mean value of an initial waveform of the unidirectional pulse output current is equal to a current value of the charging current corresponding to the quick charging mode.
10. The adapter according to claim 8, wherein, the quick charge comprises a current falling process, and in the current falling process, a peak value of a latter one in two adjacent waveforms of the unidirectional pulse output current is less than that of a former one in the two adjacent waveforms.
11. The adapter according to claim 8, wherein, the quick charge comprises a current falling process, and the current falling process is divided into a plurality of stages comprising a first stage and a second stage adjacent to the first stage, in which the first stage is earlier than the second stage, a waveform of the unidirectional pulse output current remains constant within each of the plurality of stages, a peak value of a waveform of the unidirectional pulse output current in the second stage is less than that of a waveform of the unidirectional pulse output current in the first stage.
12. The adapter according to claim 8, wherein, the communication control circuit is further configured to:
- communicate with the mobile terminal to determine a charging voltage corresponding to the quick charging mode, under a situation that the adapter determines to charge the battery in the quick charging mode; and
- adopt, according to the charging voltage corresponding to the quick charging mode, a unidirectional pulse output voltage to perform a quick charge on the battery.
13. The adapter according to claim 12, wherein, during the quick charge, a peak value of an initial waveform of the unidirectional pulse output voltage is equal to a voltage value of the charging voltage corresponding to the quick charging mode, or a mean value of an initial waveform of the unidirectional pulse output voltage is equal to a voltage value of the charging voltage corresponding to the quick charging mode.
14. The adapter according to claim 8, wherein, the unidirectional pulse output current is a current outputted from a rectifying circuit in the adapter without a filtering, and/or a pulse frequency of the unidirectional pulse output current is same with a frequency of an alternating current power supply grid.
15. A mobile terminal, comprising a communication control circuit and a charging circuit, wherein,
- the communication control circuit is configured to:
- communicate with the adapter to determine a charging mode, after the mobile terminal is coupled with an adapter via a charging interface, wherein the charging mode comprises a quick charging mode and a conventional charging mode, in which a charging speed in the quick charging mode is greater than that in the conventional charging mode;
- communicate with the adapter to determine a charging current corresponding to the quick charging mode, under a situation of determining to charge the battery in the quick charging mode; and
- receive a unidirectional pulse output current from the adapter so as to perform a quick charge on the battery via the charging circuit, wherein the unidirectional pulse output current is determined by the adapter according to the charging current corresponding to the quick charging mode.
16. The mobile terminal according to claim 15, wherein, during the quick charge, a peak value of an initial waveform of the unidirectional pulse output current is equal to a current value of the charging current corresponding to the quick charging mode, or a mean value of an initial waveform of the unidirectional pulse output current is equal to a current value of the charging current corresponding to the quick charging mode.
17. The mobile terminal according to claim 15, wherein, the quick charge comprises a current falling process, and in the current falling process, a peak value of a latter one in two adjacent waveforms of the unidirectional pulse output current is less than that of a former one in the two adjacent waveforms.
18. The mobile terminal according to claim 15, wherein, the quick charge comprises a current falling process, and the current falling process is divided into a plurality of stages comprising a first stage and a second stage adjacent to the first stage, in which the first stage is earlier than the second stage, a waveform of the unidirectional pulse output current remains constant within each of the plurality of stages, a peak value of a waveform of the unidirectional pulse output current in the second stage is less than that of a waveform of the unidirectional pulse output current in the first stage.
19. The mobile terminal according to claim 15, wherein, the communication control circuit is further configured to:
- communicate with the adapter to determine a charging voltage corresponding to the quick charging mode, under a situation of determining to charge the battery in the quick charging mode; and
- receive a unidirectional pulse output voltage from the adapter so as to perform a quick charge on the battery, wherein the unidirectional pulse output voltage is determined by the adapter according to the charging voltage corresponding to the quick charging mode.
20. The mobile terminal according to claim 19, wherein, during the quick charge, a peak value of an initial waveform of the unidirectional pulse output voltage is equal to a voltage value of the charging voltage corresponding to the quick charging mode, or a mean value of an initial waveform of the unidirectional pulse output voltage is equal to a voltage value of the charging voltage corresponding to the quick charging mode.
Type: Application
Filed: Jan 13, 2017
Publication Date: Aug 10, 2017
Applicant: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD. (Dongguan)
Inventor: Jialiang Zhang (Dongguan)
Application Number: 15/406,017