CN103647318B - Communicating terminal, charge control method, device and circuit - Google Patents

Communicating terminal, charge control method, device and circuit Download PDF

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CN103647318B
CN103647318B CN201310649049.5A CN201310649049A CN103647318B CN 103647318 B CN103647318 B CN 103647318B CN 201310649049 A CN201310649049 A CN 201310649049A CN 103647318 B CN103647318 B CN 103647318B
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voltage
chip
regulation
rated
control
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CN103647318A (en
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彭忠辉
杨江涛
文冲
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Huawei Device Co Ltd
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Huawei Device Co Ltd
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Abstract

Communicating terminal, charge control method, device and circuit is disclosed in embodiments of the invention, described communicating terminal comprises: controller, voltage-regulation chip, charging management chip, wherein, controller is connected with described charging management chip with described voltage-regulation chip respectively, and voltage-regulation chip is connected with described charging management chip; Described controller, for detecting the voltage of described charging management chip input, if the voltage deviation rated voltage of described charging management chip input, then control described voltage-regulation chip by the voltage-regulation of described voltage-regulation chip output to described rated voltage; Described voltage-regulation chip, under the control of described controller by the voltage-regulation of described voltage-regulation chip output to described rated voltage, and export described rated voltage to described charging management chip input; Described charging management chip, for charging the battery by described rated voltage.The application embodiment of the present invention can realize big current quick charge.

Description

Communicating terminal, charge control method, device and circuit
Technical field
The present invention relates to communication field, particularly a kind of communicating terminal, charge control method, device and circuit.
Background technology
On market today, the function of communicating terminal becomes increasingly abundant, and for smart mobile phone, the function of mobile phone terminal is abundanter, and power consumption is larger, also more and more higher to the demand of large Electronic power batteries.Along with the increase of battery electric quantity, the charging interval can increase accordingly.For reducing the charging interval, the method generally adopted at present improves charging current.
In prior art, adopt charger to charge the phone, the electric current that namely charger exports charges to battery after the charging management chip of mobile phone terminal inside.At present, the charging current of mobile phone is generally 1A(peace) left and right, maximumly 2.6A can be reached, realize larger charging current more difficult, reason is that the impedance comparison between charger to charging management chip is large, this impedance can only reduce to eliminate, and commercially optimizes best impedance, also this line impedance cannot be controlled within 300m Ω (milliohm) even if existing.
Because the impedance comparison between charger to charging management chip is large, voltage circuit between causing from charger to charging management chip can decline, such as, if adopt the charger of 5V, when electric current increases to more than 2A, the pressure drop on circuit can increase to more than 0.5V; If electric current increases to 3A, the pressure drop on circuit can reach about 1V.It can thus be appreciated that, due to the existence of pressure drop on circuit, the voltage of charging management chip input can be caused to be less than its rated voltage normally needed for work, thus to cause prior art cannot meet the demand of big current quick charge.
Summary of the invention
A kind of communicating terminal, charge control method, device and circuit is provided, to solve the problem that prior art cannot carry out big current quick charge in the embodiment of the present invention.
In order to solve the problems of the technologies described above, the embodiment of the invention discloses following technical scheme:
First aspect, a kind of communicating terminal is provided, it is characterized in that, described communicating terminal comprises: controller, voltage-regulation chip, charging management chip, wherein, described controller is connected with described charging management chip with described voltage-regulation chip respectively, and described voltage-regulation chip is connected with described charging management chip;
Described controller, for detecting the voltage of described charging management chip input, if the voltage deviation rated voltage of described charging management chip input, then control described voltage-regulation chip by the voltage-regulation of described voltage-regulation chip output to described rated voltage;
Described voltage-regulation chip, under the control of described controller by the voltage-regulation of described voltage-regulation chip output to described rated voltage, and export described rated voltage to described charging management chip input;
Described charging management chip, for charging the battery by described rated voltage.
In conjunction with first aspect, in the first possible implementation of first aspect,
Described controller, if be less than described rated voltage specifically for the voltage of described charging management chip input, then control described voltage-regulation chip and carries out boosting process, export described rated voltage to make described voltage-regulation chip output; If the voltage of described charging management chip input is greater than described rated voltage, then controls described voltage-regulation chip and carry out step-down process, export described rated voltage to make described voltage-regulation chip output.
In conjunction with first aspect, or the first possibility implementation of first aspect, in the implementation that the second of first aspect is possible, described communicating terminal also comprises: charger, described charger is connected with described voltage-regulation chip, and the power output of described charger is the received power of described communicating terminal.
In conjunction with first aspect, or the first possibility implementation of first aspect, or the second possibility implementation of first aspect, in the third possible implementation of first aspect, the received power of described communicating terminal is greater than the power output of described voltage-regulation chip.
Second aspect, provides a kind of charge control method, and described charge control method comprises:
Detect the voltage of charging management chip input;
If the voltage deviation rated voltage of described charging management chip input, control described voltage-regulation chip by the voltage-regulation of described voltage-regulation chip output to described rated voltage, to make described voltage-regulation chip export described rated voltage to charging management chip input, and described charging management chip is charged the battery by described rated voltage.
In conjunction with second aspect, in the first possible implementation of second aspect, the voltage-regulation of described voltage-regulation chip output to described rated voltage, comprises by described control described voltage-regulation chip:
If the voltage of described charging management chip input is less than described rated voltage, then controls described voltage-regulation chip and carry out boosting process, export described rated voltage to make described voltage-regulation chip output;
If the voltage of described charging management chip input is greater than described rated voltage, then controls described voltage-regulation chip and carry out step-down process, export described rated voltage to make described voltage-regulation chip output.
The third aspect, additionally provides a kind of battery charge controller, and described battery charge controller comprises:
Detecting unit, for detecting the voltage of charging management chip input;
Control unit, if the voltage deviation rated voltage of described charging management chip input detected for described detecting unit, control described voltage-regulation chip by the voltage-regulation of described voltage-regulation chip output to described rated voltage, to make described voltage-regulation chip export described rated voltage to charging management chip input, and described charging management chip is charged the battery by described rated voltage.
In conjunction with the third aspect, in the first possible implementation of the third aspect, described control unit comprises:
Boosting rectifier control subelement, if detect that the voltage of described charging management chip input is less than described rated voltage for described detecting unit, then control described voltage-regulation chip and carry out boosting process, export described rated voltage to make described voltage-regulation chip output;
Step-down controls subelement, if detect that the voltage of described charging management chip input is greater than described rated voltage for described detecting unit, then control described voltage-regulation chip and carry out step-down process, export described rated voltage to make described voltage-regulation chip output.
Fourth aspect, provide a kind of charging control circuit, described charging control circuit comprises: control module, Voltage Regulator Module and charge management module, wherein, described control module is connected with described charge management module with described Voltage Regulator Module respectively, and described Voltage Regulator Module is connected with described charge management module;
Described control module, for detecting the voltage of described charge management module input, if the voltage deviation rated voltage of described charge management module input, then control described Voltage Regulator Module by the voltage-regulation of described Voltage Regulator Module output to described rated voltage;
Described Voltage Regulator Module, under the control of described control module by the voltage-regulation of described Voltage Regulator Module output to described rated voltage, and export described rated voltage to described charge management module input;
Described charge management module, for charging the battery by described rated voltage.
In conjunction with fourth aspect, in the first possible implementation of fourth aspect, described control module, if be less than described rated voltage specifically for the voltage of described charge management module input, then control described Voltage Regulator Module and carry out boosting process, export described rated voltage to make described Voltage Regulator Module output; If the voltage of described charge management module input is greater than described rated voltage, then controls described Voltage Regulator Module and carry out step-down process, export described rated voltage to make described Voltage Regulator Module output.
In the embodiment of the present invention, controller is for detecting the voltage of charging management chip input, if the voltage deviation rated voltage of charging management chip input, then control voltage regulates chip by the voltage-regulation of described voltage-regulation chip output to described rated voltage, voltage-regulation chip is used for exporting rated voltage to charging management chip input, charging management chip, for charging the battery by rated voltage.The embodiment of the present invention is by detecting the voltage of charging management chip input, control voltage regulates chip to carry out voltage-regulation process, to provide rated voltage to charge management module input, thus overcome the excessive drawback of the line drop that causes due to the impedance between charger to charging management chip in prior art, big current quick charge can be realized; Further, owing to providing stable rated voltage to charging management chip, the infringement of high voltage to charging management chip is therefore avoided.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Figure 1A is an embodiment block diagram of communicating terminal of the present invention;
Figure 1B is another embodiment block diagram of communicating terminal of the present invention;
Fig. 2 is the embodiment block diagram of charging control circuit of the present invention;
Fig. 3 is the embodiment flow chart of charge control method of the present invention;
Fig. 4 A is the embodiment block diagram of battery charge controller of the present invention;
Fig. 4 B is the embodiment block diagram of control unit in Fig. 4 A.
Embodiment
The following embodiment of the present invention provides a kind of communicating terminal, charge control method, device and circuit, to realize big current quick charge.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, carry out clear, complete description to the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
See Figure 1A, an embodiment block diagram for communicating terminal of the present invention:
This communicating terminal comprises: controller 101, voltage-regulation chip 102 and charging management chip 103.Wherein, described controller 101 is connected with described charging management chip 103 with described voltage-regulation chip 102 respectively, and described voltage-regulation chip 102 is connected with described charging management chip 103.
Described controller 101, for detecting the voltage of described charging management chip input, if the voltage deviation rated voltage of described charging management chip input, then control described voltage-regulation chip by the voltage-regulation of described voltage-regulation chip output to described rated voltage;
Described voltage-regulation chip 102, under the control of described controller by the voltage-regulation of described voltage-regulation chip output to described rated voltage, and export described rated voltage to described charging management chip input;
Described charging management chip 103, for charging the battery by described rated voltage.
See Figure 1B, another embodiment block diagram for communicating terminal of the present invention:
Consistent with the communicating terminal shown in Figure 1A, this communicating terminal comprises: controller 101, voltage-regulation chip 102, charging management chip 103; Further, this communicating terminal also comprises charger 104 and battery 105.Wherein, described controller 101 is connected with described charging management chip 103 with described voltage-regulation chip 102 respectively, described voltage-regulation chip 102 is connected with described charging management chip 103, described charger 104 is connected with described voltage-regulation chip 102, the power output of described charger 104 is the received power of described communicating terminal, and described charging management chip 103 is connected with battery 105.
Described controller 101, for detecting the voltage of described charging management chip input, if the voltage deviation rated voltage of described charging management chip input, then control described voltage-regulation chip by the voltage-regulation of described voltage-regulation chip output to described rated voltage;
Described voltage-regulation chip 102, under the control of described controller by the voltage-regulation of described voltage-regulation chip output to described rated voltage, and export described rated voltage to described charging management chip input;
Described charging management chip 103, for charging the battery by described rated voltage;
Described battery 105, powers for giving described communicating terminal.
Wherein, described controller 101, if can be less than described rated voltage specifically for the voltage of described charging management chip input, then controls described voltage-regulation chip and carries out boosting process, export described rated voltage to make described voltage-regulation chip output; If the voltage of described charging management chip input is greater than described rated voltage, then controls described voltage-regulation chip and carry out step-down process, export described rated voltage to make described voltage-regulation chip output.
In the embodiment of the present invention, voltage-regulation chip 102 can be specially buck (BUCK & BOOST) chip.
In the present embodiment, due to the existence of the line loss that line drop causes, the received power of described communicating terminal can be greater than the power output of described voltage-regulation chip 102, wherein, the received power of described communicating terminal is the received power at A point place in Figure 1A, namely the power P that charger 104 provides can be greater than the power output of the voltage-regulation chip 102 in communicating terminal, meets following formula:
P> (V c-V line drop) × I out× n%
In the embodiment of the present invention, voltage-regulation chip 102 can be arranged near charging management chip 103, to reduce from the impedance between voltage-regulation chip 102 to charging management chip 103.In embodiments of the present invention, can think to ignore from the impedance between voltage-regulation chip 102 to charging management chip 103.
Communicating terminal disclosed in the embodiment of the present invention, by detecting the voltage of charging management chip input, control voltage regulates chip to carry out boosting process or step-down process, the drawback that the line drop that impedance between overcoming due to charger to charging management chip causes is excessive, realizes big current quick charge; And owing to providing stable rated voltage to charging management chip, therefore avoid the infringement of high voltage to charging management chip.
Corresponding with the embodiment of communicating terminal of the present invention, present invention also offers the embodiment of charging control circuit, charge control method and battery charge controller.
See Fig. 2, the embodiment block diagram for charging control circuit of the present invention:
This charging control circuit comprises: control module 201, Voltage Regulator Module 202 and charge management module 203.Wherein, described control module 201 is connected with described charge management module 203 with described Voltage Regulator Module 202 respectively, and described Voltage Regulator Module 202 is connected with described charge management module 203.
In the embodiment of the present invention, Voltage Regulator Module 202 can be arranged near charge management module 203, to reduce from the impedance between Voltage Regulator Module 202 to charge management module 203.In embodiments of the present invention, can think to ignore from the impedance between Voltage Regulator Module 202 to charge management module 203.
Described control module 201, for detecting the voltage of described charge management module input, if the voltage deviation rated voltage of described charge management module input, then control described Voltage Regulator Module by the voltage-regulation of described Voltage Regulator Module output to described rated voltage;
Described Voltage Regulator Module 202, under the control of described control module by the voltage-regulation of described Voltage Regulator Module output to described rated voltage, and export described rated voltage to described charge management module input;
Described charge management module 203, for charging the battery by described rated voltage.
In the embodiment of the present invention, rated voltage is generally 5V.
Wherein, described control module 201, if can be less than described rated voltage specifically for the voltage of described charge management module input, then controls described Voltage Regulator Module and carries out boosting process, export described rated voltage to make described Voltage Regulator Module output; If the voltage of described charge management module input is greater than described rated voltage, then controls described Voltage Regulator Module and carry out step-down process, export described rated voltage to make described Voltage Regulator Module output.
In the embodiment of the present invention, Voltage Regulator Module 202 can specifically buck (BUCK & BOOST) module.
The charging control circuit of the embodiment of the present invention, by detecting the voltage of charge management module input, control described Voltage Regulator Module and output voltage is adjusted to rated voltage, the drawback that the line drop that impedance between overcoming due to charger to charge management module causes is excessive, big current quick charge can be realized, simultaneously; And owing to providing stable rated voltage to charge management module, also therefore avoid the infringement of high voltage to charge management module.
Charging control circuit control voltage adjustment module the following detailed description of the embodiment of the present invention carries out boosting and step-down, to realize the process of big current quick charge:
With reference to figure 2, the charging control circuit of the embodiment of the present invention can coordinate rated voltage to be that the large current charge module (not shown in Fig. 2) of 5V realizes quick charge, and this charging module can be connected with Voltage Regulator Module 202.
If charging module is rated output voltage is the large current charge device of 5V, the output voltage of charger is actual is 5V ± 5%.Due to the line impedance between from charger to charge management module 203 and use large current charge, line drop is comparatively large, and therefore the voltage of charge management module 203 input is less than rated voltage 5V usually.
When control module 201 detects that the voltage of charge management module 203 input is less than rated voltage 5V, then control voltage adjustment module 202 carries out boosting process; Voltage Regulator Module 202 output rated voltage 5V is to charge management module 203; Charge management module 203, by described rated voltage, adopts big current to charge the battery.
In the charging control circuit of the embodiment of the present invention, when the output voltage of charging module adopted is rated voltage and output current is big current, Voltage Regulator Module 202 carries out boosting process, the drawback that the line drop that impedance between overcoming due to charging module to charge management module 203 causes is excessive, achieve big current quick charge, shorten the charging interval.
With reference to figure 2, when the charging control circuit of the embodiment of the present invention to be greater than the charging module of 5V with the use of rated output voltage, also normally can to work and realize big current quick charge, being described as follows:
The charging voltage provided due to charging module is comparatively large, even if the line impedance between considering from charging module to charge management module 203, the voltage of charge management module 203 input still may be greater than rated voltage 5V; Control module 201 detects that the voltage of charge management module 203 input is greater than rated voltage 5V, then control voltage adjustment module 202 carries out step-down process; Voltage Regulator Module 202 output rated voltage 5V is to charge management module 203; Charge management module 203 is by described rated voltage and adopt big current to charge the battery.
In the charging control circuit of the embodiment of the present invention; when the output voltage of charging module is high voltage; control module 201 control voltage adjustment module 202 carries out step-down process; output rated voltage is to charge management module 203; avoid the infringement of high voltage to charge management module 203; charge management module 203 also can be avoided simultaneously to enter overvoltage protection state under high voltages, thus realize big current quick charge, shorten the charging interval.
In the embodiment of the present invention, due to Voltage Regulator Module 202 carry out boosting or step-down process time have certain power loss, simultaneously due to line loss that the existence of line drop causes, for realizing quick charge, the power P that above-mentioned charging control circuit receives can be greater than the power output of the Voltage Regulator Module 202 in charging control circuit.
If the conversion efficiency of Voltage Regulator Module 202 is n%, then
Wherein, V line dropfor from charging module to the line drop of Voltage Regulator Module 202, V rated voltagefor the output voltage of Voltage Regulator Module 202, I infor the output current of described Voltage Regulator Module 202, V cfor the input voltage of described charging control circuit, I outfor the input current of described charging control circuit.
If the power P that charging control circuit receives is greater than the power output of the Voltage Regulator Module 202 in charging control circuit, then demand fulfillment following formula:
P>V rated voltage× I in(2)
Substitute into formula (2) after being out of shape by formula (1), can draw
P> (V c-V line drop) × I out× n%(3)
V cfor the input voltage of described charging control circuit, the output voltage of charging module can be thought; I outfor the input current of described charging control circuit, the output current of charging module can be thought; V line dropcan measure, the conversion efficiency n% of Voltage Regulator Module 202 is preset parameters, therefore, can be estimated the input power P of charging control circuit by above-mentioned formula (3).In the embodiment of the present invention, the input power of charging control circuit is provided by charging module, therefore the input power of charging control circuit also can think the power output equaling charger, the power output of charger can be estimated by above-mentioned formula (3), so as with the charging module selecting to be used in combination with the charging control circuit of the embodiment of the present invention.
See Fig. 3, be the embodiment flow chart of charge control method of the present invention, the description in conjunction with previous embodiment is known, and this charging control flow is the control procedure of aforementioned controllers or control module execution:
Step 301: the voltage detecting charging management chip input.
Step 302: if the voltage deviation rated voltage of charging management chip input, control voltage regulates chip by the voltage-regulation of voltage-regulation chip output to rated voltage, to make voltage-regulation chip export rated voltage to charging management chip input, and charging management chip is charged the battery by rated voltage.
Concrete, if the voltage of described charging management chip input is less than described rated voltage, then can controls described voltage-regulation chip and carry out boosting process, export described rated voltage to make described voltage-regulation chip output; If the voltage of described charging management chip input is greater than described rated voltage, then can controls described voltage-regulation chip and carry out step-down process, export described rated voltage to make described voltage-regulation chip output.
Above-described embodiment is by detecting the voltage of charging management chip input, control voltage regulates chip to carry out boosting process or step-down process, the drawback that the line drop that impedance between overcoming due to charger to charging management chip causes is excessive, realizes big current quick charge; And owing to providing stable rated voltage to charging management chip, therefore avoid the infringement of high voltage to charging management chip.
See Fig. 4 A, the embodiment for battery charge controller of the present invention:
This battery charge controller comprises: detecting unit 410 and control unit 420.
Wherein, detecting unit 410, for detecting the voltage of charging management chip input;
Control unit 420, if the voltage deviation rated voltage of described charging management chip input detected for described detecting unit, control described voltage-regulation chip by the voltage-regulation of described voltage-regulation chip output to described rated voltage, to make described voltage-regulation chip export described rated voltage to charging management chip input, and described charging management chip is charged the battery by described rated voltage.
See Fig. 4 B, the embodiment block diagram for control unit 420 in Fig. 4 A:
This control unit 420 can comprise:
Boosting rectifier control subelement 421, if detect that the voltage of described charging management chip input is less than described rated voltage for described detecting unit, then control described voltage-regulation chip and carry out boosting process, export described rated voltage to make described voltage-regulation chip output;
Step-down controls subelement 422, if detect that the voltage of described charging management chip input is greater than described rated voltage for described detecting unit, then control described voltage-regulation chip and carry out step-down process, export described rated voltage to make described voltage-regulation chip output.
As seen from the above-described embodiment, controller is for detecting the voltage of charging management chip input, if the voltage deviation rated voltage of charging management chip input, then control voltage regulates chip by the voltage-regulation of described voltage-regulation chip output to described rated voltage, voltage-regulation chip is used for exporting rated voltage to charging management chip input, charging management chip, for charging the battery by rated voltage.The embodiment of the present invention is by detecting the voltage of charging management chip input, control voltage regulates chip to carry out voltage-regulation process, to provide rated voltage to charge management module input, thus overcome the excessive drawback of the line drop that causes due to the impedance between charger to charging management chip in prior art, big current quick charge can be realized; Further, owing to providing stable rated voltage to charging management chip, the infringement of high voltage to charging management chip is therefore avoided.
Those skilled in the art can be well understood to the mode that technology in the embodiment of the present invention can add required common hardware by software and realize, common hardware comprises universal integrated circuit, universal cpu, general-purpose storage, universal elements etc., can certainly comprise application-specific integrated circuit (ASIC), dedicated cpu, private memory, special components and parts etc. by specialized hardware to realize, but in a lot of situation, the former is better execution mode.Based on such understanding, technical scheme in the embodiment of the present invention can embody with the form of software product the part that prior art contributes in essence in other words, this computer software product can be stored in storage medium, as read-only memory (ROM, Read-OnlyMemory), random access memory (RAM, RandomAccessMemory), magnetic disc, CD etc., comprising some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) perform the method described in some part of each embodiment of the present invention or embodiment.
Each embodiment in this specification all adopts the mode of going forward one by one to describe, between each embodiment identical similar part mutually see, what each embodiment stressed is the difference with other embodiments.Especially, for system embodiment, because it is substantially similar to embodiment of the method, so description is fairly simple, relevant part illustrates see the part of embodiment of the method.
Above-described embodiment of the present invention, does not form limiting the scope of the present invention.Any amendment done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.

Claims (6)

1. a communicating terminal, it is characterized in that, described communicating terminal comprises: controller, voltage-regulation chip, charging management chip, wherein, described controller is connected with described charging management chip with described voltage-regulation chip respectively, and described voltage-regulation chip is connected with described charging management chip;
Described controller, for detecting the voltage of described charging management chip input, if the voltage deviation rated voltage of described charging management chip input, then control described voltage-regulation chip by the voltage-regulation of described voltage-regulation chip output to described rated voltage;
Described voltage-regulation chip, under the control of described controller by the voltage-regulation of described voltage-regulation chip output to described rated voltage, and export described rated voltage to described charging management chip input;
Described charging management chip, for charging the battery by described rated voltage;
Wherein, described controller, if be less than described rated voltage specifically for the voltage of described charging management chip input, then control described voltage-regulation chip and carries out boosting process, export described rated voltage to make described voltage-regulation chip output; If the voltage of described charging management chip input is greater than described rated voltage, then controls described voltage-regulation chip and carry out step-down process, export described rated voltage to make described voltage-regulation chip output.
2. communicating terminal as claimed in claim 1, it is characterized in that, described communicating terminal also comprises: charger, and described charger is connected with described voltage-regulation chip, and the power output of described charger is the received power of described communicating terminal.
3. communicating terminal as claimed in claim 1 or 2, it is characterized in that, the received power of described communicating terminal is greater than the power output of described voltage-regulation chip.
4. a charge control method, is characterized in that, described charge control method comprises:
Detect the voltage of charging management chip input;
If the voltage of described charging management chip input is less than rated voltage, then control voltage regulates chip to carry out boosting process, exports described rated voltage to make described voltage-regulation chip output; If the voltage of described charging management chip input is greater than described rated voltage, then controls described voltage-regulation chip and carry out step-down process, export described rated voltage to make described voltage-regulation chip output; To make described voltage-regulation chip export described rated voltage to charging management chip input, and described charging management chip is charged the battery by described rated voltage.
5. a battery charge controller, is characterized in that, described battery charge controller comprises:
Detecting unit, for detecting the voltage of charging management chip input;
Control unit, if the voltage deviation rated voltage of described charging management chip input detected for described detecting unit, control voltage regulates chip by the voltage-regulation of described voltage-regulation chip output to described rated voltage, to make described voltage-regulation chip export described rated voltage to charging management chip input, and described charging management chip is charged the battery by described rated voltage;
Wherein, described control unit comprises:
Boosting rectifier control subelement, if detect that the voltage of described charging management chip input is less than described rated voltage for described detecting unit, then control described voltage-regulation chip and carry out boosting process, export described rated voltage to make described voltage-regulation chip output;
Step-down controls subelement, if detect that the voltage of described charging management chip input is greater than described rated voltage for described detecting unit, then control described voltage-regulation chip and carry out step-down process, export described rated voltage to make described voltage-regulation chip output.
6. a charging control circuit, it is characterized in that, described charging control circuit comprises: control module, Voltage Regulator Module and charge management module, wherein, described control module is connected with described charge management module with described Voltage Regulator Module respectively, and described Voltage Regulator Module is connected with described charge management module;
Described control module, for detecting the voltage of described charge management module input, if the voltage deviation rated voltage of described charge management module input, then control described Voltage Regulator Module by the voltage-regulation of described Voltage Regulator Module output to described rated voltage;
Described Voltage Regulator Module, under the control of described control module by the voltage-regulation of described Voltage Regulator Module output to described rated voltage, and export described rated voltage to described charge management module input;
Described charge management module, for charging the battery by described rated voltage;
Wherein, described control module, if be less than described rated voltage specifically for the voltage of described charge management module input, then control described Voltage Regulator Module and carries out boosting process, export described rated voltage to make described Voltage Regulator Module output; If the voltage of described charge management module input is greater than described rated voltage, then controls described Voltage Regulator Module and carry out step-down process, export described rated voltage to make described Voltage Regulator Module output.
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