CN104300630A - Charging control device and method - Google Patents

Charging control device and method Download PDF

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Publication number
CN104300630A
CN104300630A CN201410555033.2A CN201410555033A CN104300630A CN 104300630 A CN104300630 A CN 104300630A CN 201410555033 A CN201410555033 A CN 201410555033A CN 104300630 A CN104300630 A CN 104300630A
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China
Prior art keywords
charging management
charging
current
constant
management chip
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CN201410555033.2A
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Chinese (zh)
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CN104300630B (en
Inventor
冯红俊
李家达
邓南巍
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广东欧珀移动通信有限公司
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Priority to CN201410555033.2A priority Critical patent/CN104300630B/en
Publication of CN104300630A publication Critical patent/CN104300630A/en
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Publication of CN104300630B publication Critical patent/CN104300630B/en

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0003Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with provision for charging different types of batteries
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007Regulation of charging or discharging current or voltage

Abstract

The embodiment of the invention discloses a charging control device and method. The charging control device comprises a battery, at least two charging management chips and a controller, wherein the at least two charging management chips are connected in parallel, the input end of each of the at least two charging management chips is used for being connected with a current output end of an adapter, and the output end of each of the at least two charging management chips is connected with the battery and connected with the controller through a bus. The controller is used for acquiring whether the adapter is in an access state and dynamically controls the working state of each of the at least two charging management chips to charge the battery after the fact that the adapter is in the access state is acquired. According to the technical scheme, by connecting a plurality of charging management chips in parallel, the charging management chips are controlled dynamically by the controller, the charging speed can be quickened, the charging time can be shortened, and the charging requirement for quick and large current of the battery on a terminal device can be met.

Description

Battery charge controller and method

Technical field

The embodiment of the present invention relates to charging technique field, particularly relates to a kind of battery charge controller and method.

Background technology

At present, all multi-terminal equipments, as smart mobile phone, panel computer, personal digital assistant etc., all adopt battery to power.Along with the fast development of electronic technology, the function of terminal equipment also gets more and more, such as people can be carried out instant messaging, surf the Net, play games, be seen video by terminal equipment, and the display screen of terminal equipment is also increasing, thus can consume a large amount of electricity when using terminal equipment.Therefore, the performance requirement of terminal equipment battery and charging rate is also improved thereupon.

In the prior art, when using adapter (being also charger) to charge to the battery on terminal equipment, the general single channel charging management chip of electric current first through being attached thereto being all adapter and exporting, and then export battery to by single channel charging management chip.But the existing charging modes to terminal equipment battery, because of the restriction of charging management chip specification, can not to meet more fast, the charge requirement of more big current, thus causes the charging interval long, Consumer's Experience weak effect.

Summary of the invention

The embodiment of the present invention provides a kind of battery charge controller and method, to accelerate charging rate, shortens the charging interval, thus to meet the battery on terminal equipment more fast, the charge requirement of more big current.

First aspect, embodiments provides a kind of battery charge controller, and this device comprises: battery, at least two charging management chips and controller; Described at least two charging management chips are connected in parallel; In described at least two charging management chips, the input of each charging management chip is all for being connected with the current output terminal of adapter, and the output of each charging management chip is all connected with described battery, and is connected with described controller by bus; Wherein:

Described controller, for obtaining whether the state of described adapter is access state;

After the state getting described adapter is access state, the operating state of each charging management chip at least two charging management chips described in Dynamic controlling, to charge to described battery.

Second aspect, the embodiment of the present invention additionally provides a kind of charge control method, and be applied to battery charge controller described above, the method comprises:

Whether the state that the controller of described battery charge controller obtains described adapter is access state;

Described controller is after the state getting described adapter is access state, and the operating state of each charging management chip at least two charging management chips described in Dynamic controlling, to charge to described battery.

The technical scheme that the embodiment of the present invention provides, multiple charging management chip is connected in parallel, based on controller, Dynamic controlling is carried out to multiple charging management chip, can charging rate be accelerated, shorten the charging interval, to meet the battery on terminal equipment more fast, the charge requirement of more big current.

Accompanying drawing explanation

Fig. 1 is the structural representation of a kind of battery charge controller that the embodiment of the present invention one provides;

Fig. 2 is the structural representation of a kind of battery charge controller that the embodiment of the present invention two provides;

Fig. 3 is the schematic flow sheet of a kind of charge control method that the embodiment of the present invention four provides.

Embodiment

Below in conjunction with drawings and Examples, the present invention is described in further detail.Be understandable that, specific embodiment described herein is only for explaining the present invention, but not limitation of the invention.It also should be noted that, for convenience of description, illustrate only part related to the present invention in accompanying drawing but not entire infrastructure.

Embodiment one

Fig. 1 is the structural representation of a kind of battery charge controller that the embodiment of the present invention one provides.See Fig. 1, this battery charge controller 100 comprises:

Battery 110, at least two charging management chips 120, and controller 130;

At least two charging management chips 120 comprise: first charging management chip, 1201, second charging management chip 1202 ... N number of charging management chip 1203, wherein N be more than or equal to two integer.

Each charging management chip at least two charging management chips 120 is connected in parallel;

In at least two charging management chips 120, the input of each charging management chip is all for being connected with the current output terminal of adapter 140, and the output of each charging management chip is all connected with battery 110, and is connected with controller 130 by bus;

Wherein: controller 130, for obtaining whether the state of adapter 140 is access state;

After the state getting adapter 140 is access state, the operating state of each charging management chip in Dynamic controlling at least two charging management chips 120, to charge to battery 110.

In the present embodiment, controller 130, by detecting the voltage of at least two charging management chip 120 input ends, judges whether the state of adapter 140 is access state.If described voltage is greater than the voltage threshold (being such as 4.5V) of setting, then judge that the state of adapter 140 is access state, enter charging process, controlling at least two charging management chips 120 pairs of batteries 110 charges; Otherwise be non-access state.

Wherein, all corresponding maximum current parameter value of each charging management chip at least two charging management chips 120, its model can be identical, also can be different.Maximum current parameter value shows the lowest high-current value that charging management chip can bear.Each charging management chip all can after adapter 140 be access in; the operating state of self is adjusted under the control of controller 130; to meet, preliminary filling stage, constant-current phase and constant-voltage phase are followed successively by the charging process of battery, and there is the defencive function such as overvoltage, under-voltage, overcurrent, temperature.Wherein, the charging current inputing to battery under the preliminary filling stage is a less fixed value, such as, be 300mA, and under this stage, cell voltage constantly increases to brownout threshold along with the carrying out of charging process; The charging current inputing to battery under constant-current phase is the maximum charging current in whole charging process, such as, be 2A, and under this stage, cell voltage continues constantly to increase to constant voltage threshold value along with the carrying out of charging process; Along with the time constantly reduces on the basis inputing to the charging current of charging current under constant-current phase of battery under constant-voltage phase, until the charging current inputing to battery reaches the full charging stream threshold value (being such as 50mA) of setting, under this stage, cell voltage is invariable, is constant voltage threshold value.

For example, at least two charging management chips 120 comprise a main charging management chip (being such as first main charging management chip 1201) and multiple secondary charging management chip (second main charging management chip 1202 ... N number of charging management chip), the initial condition of each charging management chip is closed condition, controller 130, to the control of each charging management chip, can comprise:

After the state getting adapter 140 is access state, only drives main charging management chip in the preliminary filling stage of charging process, thus only the output current of main charging management chip is transferred to battery 110 as charging current, to charge to battery 110;

Drive the part or all of chip in main charging management chip and described multiple secondary charging management chip in the constant-current phase of charging process simultaneously, thus battery 110 is transferred to as charging current, to charge to battery 110 after main charging management chip and the output current of the secondary charging management chip driven superpose;

In the constant-voltage phase of charging process, be less than the maximum current parameter value of main charging management chip in charging current after, close the secondary charging management chip that constant-current phase drives, thus only the output current of main charging management chip is transferred to battery 110 as charging current, to charge to battery 110.

Certainly, controller 130 can also be controlled each charging management chip by alternate manner, and the present embodiment is not construed as limiting this.Such as, after the state getting adapter 140 is access state, also be drive main charging management chip and multiple secondary charging management chip in the preliminary filling stage of charging process simultaneously, thus battery 110 is transferred to as charging current, to charge to battery 110 after main charging management chip and the output current of the secondary charging management chip driven superpose.The output current sum of each charging management chip obtained in this fashion, should be equal with the output current of the above-mentioned main charging management chip only driving main charging management chip mode to obtain under the preliminary filling stage.

The technical scheme that the present embodiment provides, by arranging the charging management chip of multiple parallel connection in charging device, and based on controller, Dynamic controlling is carried out to multiple charging management chip, thus the Multi-path electricity stream that multiple charging management chip can be exported carries out superposition charges to battery, accelerate charging rate, shorten the charging interval, to meet the battery on terminal equipment more fast, the charge requirement of more big current.

Embodiment two

Fig. 2 is the structural representation of a kind of battery charge controller that the embodiment of the present invention two provides.The present embodiment, on the basis of above-described embodiment one, is done to optimize further to the structure of controller.See Fig. 2, this battery charge controller 200 comprises:

Battery 210, at least two charging management chips 220, and controller 230;

At least two charging management chips 220 comprise: first charging management chip, 2201, second charging management chip 2202 ... N number of charging management chip, wherein N be more than or equal to two integer.

Each charging management chip at least two charging management chips 220 is connected in parallel;

In at least two charging management chips 220, the input of each charging management chip is all for being connected with the current output terminal of adapter 240, and the output of each charging management chip is all connected with battery 210, and is connected with controller 230 by bus;

Wherein: controller 230, for obtaining whether the state of adapter 240 is access state;

After the state getting adapter 240 is access state, the operating state of each charging management chip in Dynamic controlling at least two charging management chips 220, to charge to battery 210.

In the present embodiment, controller 230 can an optional charging management chip be as main charging management chip from least two charging management chips 220, and other charging management chips are all as secondary charging management chip.

The initial condition of each charging management chip at least two charging management chips 220 is closed condition;

Controller 230, comprising:

Access state acquiring unit 2301, for obtaining whether the state of adapter 240 is access state;

Preliminary filling stage control unit 2302, after in the state getting adapter 240 being access state, the main charging management chip controlled at least two charging management chips 220 enters the preliminary filling stage of charging process, charges to battery 210 with the first charging current set;

Constant-current phase control unit 2303, for after detecting that main charging management chip switches to constant-current phase by the preliminary filling stage, the main charging management chip controlled at least two charging management chips 220 is operated in constant-current phase with at least one secondary charging management chip, charges to battery 210 the output current of main charging management chip and at least one secondary charging management chip described to be carried out superpose rear the second charging current generating setting;

Constant-voltage phase control unit 2304, for after detecting that main charging management chip switches to constant-voltage phase by constant-current phase, control main charging management chip at least two charging management chips 220 and/or at least one secondary charging management chip is operated in constant-voltage phase, with the voltage set, battery 210 is charged;

Wherein, the first charging current is less than the second charging current, the charging current under constant-voltage phase on the basis of the second charging current along with the time constantly reduces.Preferably, the first charging current is 300mA, and the second charging current is 2A.

In the present embodiment, the sub-control chip in battery charge controller structurally can be identical with main charging management chip, mainly participates in constant-current phase, constant-voltage phase supplementing charging current, thus can realize the charging of more big current.

On the basis of technique scheme, described controller 230 also comprises:

Voltage threshold transmitting element 2305, before being access state in the state getting adapter 240, sends under-voltage voltage threshold and the constant voltage threshold value of setting to the main charging management chip at least two charging management chips 220;

Main charging management chip at least two charging management chips 220, for:

Under the control of preliminary filling stage control unit 2302, after detecting that the voltage of battery 210 is less than described under-voltage voltage threshold, enter the preliminary filling stage;

Detecting that the voltage of battery 210 is greater than described under-voltage voltage threshold and after being less than described constant voltage threshold value, the charging stage is switched to constant-current phase by the preliminary filling stage;

After detecting that the voltage of battery 210 is greater than described constant voltage threshold value, the charging stage is switched to constant-voltage phase by constant-current phase.

The technical scheme that the present embodiment provides, by arranging the charging management chip of multiple parallel connection in charging device, and drive multiple charging management chip output current based on the constant-current phase of controller in charging process simultaneously, thus the Multi-path electricity stream that can be exported by multiple charging management chip in constant-current phase carries out superposition charges to battery, greatly accelerate charging rate, shorten the charging interval.

Embodiment three

The present embodiment based on above-described embodiment, can provide a kind of preferred embodiment.In the present embodiment, battery charge controller can be mobile terminal.Wherein, mobile terminal can be that smart mobile phone, personal digital assistant, panel computer etc. have central processing unit and use lithium battery to carry out the electronic equipment of powering.Controller in battery charge controller is the central processor CPU of mobile terminal.

Constant-current phase control unit 2303 in controller 230, specifically for:

Receive main charging management chip switched to constant-current phase by the preliminary filling stage in the charging stage time, after the first stage switching command of initiating with interrupt mode, according to the maximum constant current value preset and the maximum current parameter value of at least two charging management chips 220, determine lower secondary charging management chip, target current corresponding under described constant-current phase of the secondary charging management chip that open and the target current of main charging management chip corresponding under described constant-current phase that will open of constant-current phase;

Send the first instruction to this determined secondary charging management chip, perform open operation to control this determined secondary charging management chip, enter constant-current phase, and be adjusted to corresponding target current by from the output current in constant-current phase;

Send the second instruction to main charging management chip, be adjusted to corresponding target current to control described main charging management chip by from the output current under constant-current phase.

For example, the maximum constant current value preset is 5A, in at least two charging management chips 220, the maximum current parameter value of each secondary charging management chip is 2A, then can determine that the lower secondary charging management chip that will open of constant-current phase is: first secondary charging management chip and second secondary charging management chip, and first secondary charging management chip, second secondary charging management chip and the main charging management chip target current corresponding under constant-current phase is respectively 2A, 1A and 2A.Certainly, first secondary charging management chip, second secondary charging management chip and the main charging management chip target current corresponding under constant-current phase also can be respectively 2A, 2A and 1A, and also can be respectively 1.5A, 1.5A and 2A, as long as the target current sum of described three charging management chips corresponding under constant-current phase is the second charging current of setting, and the target current value of each charging management chip is less than the maximum current parameter value of self.Constant-voltage phase control unit 2304 in controller 230, for:

Receive main charging management chip switched to constant-voltage phase by constant-current phase in the charging stage time, after the second stage switching command of initiating with interrupt mode, control the first constant-voltage phase that main charging management chip and the secondary charging management chip that is in opening enter charging process, with setting voltage battery 210 is charged, the charging current wherein under the first constant-voltage phase on the basis of the second charging current along with the time constantly reduces;

Detect the charging current inputing to battery 210;

Judge whether the charging current detected is less than the maximum current parameter value sum of the current part charging management chip be in all charging management chips of opening;

If so, to current other charging management chips except described part charging management chip be in all charging management chips of opening, send the 3rd instruction, perform shutoff operation to control other charging management chips described; And send the 4th instruction to described part charging management chip, control the second constant-voltage phase that described part charging management chip is operated in charging process, with the voltage of described setting, battery 210 is charged, the charging current wherein under the second constant-voltage phase on the basis of detected charging current along with the time constantly reduces.

In the present embodiment, controller 230 is after the main charging management chip of control and the secondary charging management chip being in opening enter the first constant-voltage phase of charging process, the once current charging current inputing to battery 210 can be detected every setting-up time (such as 3 minutes), by comparing the maximum current parameter value sum of detected charging current and the secondary charging management chip of the current part be in the secondary charging management chip of opening, identify that can detect charging current be provided by the part charging management chip be in the secondary charging management chip of opening.If so, trigger current other secondary charging management chips except the secondary charging management chip of described part be in the secondary charging management chip of opening and perform shutoff operations, and control the secondary charging management chip of described part and continue to operate in constant-current phase.For example, the current all charging management chips being in opening are: main charging management chip, first secondary charging management chip and second secondary charging management chip, its maximum current parameter value is 2A, detect that the current charging current value inputing to battery 210 is 3A, therefore detected charging current 3A is less than the maximum current parameter value sum 4A of any two charging management chips in described three charging management chips, this Time Controller 230 can close an arbitrary charging management chip in described three charging management chips (being such as second secondary charging management chip), its output current is made to be 0, and control other two charging management chips (main charging management chip and first secondary charging management chip) and continue to operate in constant-current phase, the two export superposition after charging current on the basis of detected charging current 3A along with the time constantly reduces.

The technical scheme that the present embodiment provides, arranges the charging management chip of multiple parallel connection in charging device, and drives multiple charging management chip output current based on the partial period of the constant-current phase of controller in charging process and constant-voltage phase simultaneously.Come compared with battery powered scheme with only adopting single charging management chip, the present embodiment can provide larger charging current, complete the charging work of high capacity cell fast, and the power consumption of single charging management chip can be reduced, improve the heating of chip in charging process.

Embodiment four

Fig. 3 is the schematic flow sheet of a kind of charge control method that the embodiment of the present invention four provides.Described method can be applicable to the battery charge controller that any embodiment of the present invention provides.See Fig. 3, this charge control method comprises following operation:

Whether the state of the controller acquisition adapter of operation 310, battery charge controller is access state;

Operation 320, controller are after the state getting adapter is access state, and the operating state of each charging management chip in Dynamic controlling at least two charging management chips, to charge to battery.

Further, the initial condition of each charging management chip in described at least two charging management chips is closed condition;

Described controller is after the state getting adapter is access state, and the operating state of each charging management chip in Dynamic controlling at least two charging management chips, to charge to battery, comprising:

Controller is after the state getting adapter is access state, and the main charging management chip controlled at least two charging management chips enters the preliminary filling stage of charging process, charges to battery with the first charging current set;

Controller is after detecting that main charging management chip switches to constant-current phase by the preliminary filling stage, the main charging management chip controlled in two charging management chips is operated in constant-current phase with at least one secondary charging management chip, charges to battery the output current of main charging management chip and at least one secondary charging management chip described to be carried out superpose rear the second charging current generating setting;

Controller is after detecting that main charging management chip switches to constant-voltage phase by constant-current phase, main charging management chip at least two charging management chips described in control and/or at least one secondary charging management chip are operated in constant-voltage phase, charge to described battery with the voltage set;

Wherein, described first charging current is less than described second charging current, the charging current under described constant-voltage phase on the basis of described second charging current along with the time constantly reduces.

Further, the charge control method that the present embodiment provides also comprises:

Controller, before the state getting adapter is access state, sends under-voltage voltage threshold and the constant voltage threshold value of setting to the main charging management chip at least two charging management chips;

Main charging management chip in described at least two charging management chips under the control of the controller, after detecting that the voltage of battery is less than under-voltage voltage threshold, enters the preliminary filling stage; Detecting that the voltage of battery is greater than under-voltage voltage threshold and after being less than constant voltage threshold value, the charging stage is switched to constant-current phase by the preliminary filling stage; After detecting that the voltage of battery is greater than constant voltage threshold value, the charging stage is switched to constant-voltage phase by constant-current phase.

Further, controller is after detecting that main charging management chip switches to constant-current phase by the preliminary filling stage, and at least one the secondary charging management chip controlled in two charging management chips enters constant-current phase, comprising:

Controller receive main charging management chip switched to constant-current phase by the preliminary filling stage in the charging stage time, after the first stage switching command of initiating with interrupt mode, according to the maximum constant current value preset and the maximum current parameter value of described at least two charging management chips, determine lower secondary charging management chip, target current corresponding under described constant-current phase of the secondary charging management chip that open and the target current of main charging management chip corresponding under described constant-current phase that will open of constant-current phase;

Controller sends the first instruction to this determined secondary charging management chip, performs open operation, enter constant-current phase, and be adjusted to corresponding target current by from the output current in constant-current phase to control this determined secondary charging management chip;

Controller sends the second instruction to main charging management chip, is adjusted to corresponding target current to control main charging management chip by from the output current under constant-current phase.

Further, controller is after detecting that main charging management chip switches to constant-voltage phase by constant-current phase, control the constant-voltage phase that main charging management chip at least two charging management chips and/or at least one secondary charging management chip enter charging process, comprising:

Controller receive described main charging management chip switched to constant-voltage phase by constant-current phase in the charging stage time, after the second stage switching command of initiating with interrupt mode, control the first constant-voltage phase that main charging management chip and the secondary charging management chip that is in opening enter charging process, with setting voltage battery is charged, the charging current wherein under the first constant-voltage phase on the basis of described second charging current along with the time constantly reduces;

Controller detects the charging current inputing to described battery;

Controller judges whether the charging current detected is less than the maximum current parameter value sum of the current part charging management chip be in all charging management chips of opening;

If so, controller, to current other charging management chips except described part charging management chip be in all charging management chips of opening, sends the 3rd instruction, performs shutoff operation to control other charging management chips described; And send the 4th instruction to described part charging management chip, control described part charging management chip and be operated in the second constant-voltage phase, with the voltage of described setting, described battery is charged, the charging current wherein under the second constant-voltage phase on the basis of detected charging current along with the time constantly reduces.

The charge control method that the present embodiment provides, possesses the inventive concept identical with the battery charge controller that any embodiment of the present invention provides and beneficial effect, not detailed description in the present embodiment, the charging device that can set forth see the various embodiments described above.

Note, above are only preferred embodiment of the present invention and institute's application technology principle.Skilled person in the art will appreciate that and the invention is not restricted to specific embodiment described here, various obvious change can be carried out for a person skilled in the art, readjust and substitute and can not protection scope of the present invention be departed from.Therefore, although be described in further detail invention has been by above embodiment, the present invention is not limited only to above embodiment, when not departing from the present invention's design, can also comprise other Equivalent embodiments more, and scope of the present invention is determined by appended right.

Claims (11)

1. a battery charge controller, is characterized in that, comprising: battery, at least two charging management chips and controller; Described at least two charging management chips are connected in parallel; In described at least two charging management chips, the input of each charging management chip is all for being connected with the current output terminal of adapter, and the output of each charging management chip is all connected with described battery, and is connected with described controller by bus; Wherein:
Described controller, for obtaining whether the state of described adapter is access state;
After the state getting described adapter is access state, the operating state of each charging management chip at least two charging management chips described in Dynamic controlling, to charge to described battery.
2. battery charge controller according to claim 1, is characterized in that, the initial condition of each charging management chip in described at least two charging management chips is closed condition;
Described controller, comprising:
Access state acquiring unit, for obtaining whether the state of described adapter is access state;
Preliminary filling stage control unit, after in the state getting described adapter being access state, main charging management chip at least two charging management chips described in control enters the preliminary filling stage of charging process, charges to described battery with the first charging current set;
Constant-current phase control unit, for after detecting that described main charging management chip switches to constant-current phase by the preliminary filling stage, main charging management chip at least two charging management chips described in control and at least one secondary charging management chip are operated in constant-current phase, charge to described battery the output current of described main charging management chip and at least one secondary charging management chip described to be carried out superpose rear the second charging current generating setting;
Constant-voltage phase control unit, for after detecting that described main charging management chip switches to constant-voltage phase by constant-current phase, main charging management chip at least two charging management chips described in control and/or at least one secondary charging management chip are operated in constant-voltage phase, charge to described battery with the voltage set;
Wherein, described first charging current is less than described second charging current, the charging current under described constant-voltage phase on the basis of described second charging current along with the time constantly reduces.
3. battery charge controller according to claim 2, is characterized in that, described controller also comprises:
Voltage threshold transmitting element, before being access state in the state getting described adapter, sends under-voltage voltage threshold and the constant voltage threshold value of setting to the main charging management chip in described at least two charging management chips;
Main charging management chip in described at least two charging management chips, for:
Under the control of described preliminary filling stage control unit, after detecting that the voltage of described battery is less than described under-voltage voltage threshold, enter the preliminary filling stage;
Detecting that the voltage of described battery is greater than described under-voltage voltage threshold and after being less than described constant voltage threshold value, the charging stage is switched to constant-current phase by the preliminary filling stage;
After detecting that the voltage of described battery is greater than described constant voltage threshold value, the charging stage is switched to constant-voltage phase by constant-current phase.
4. battery charge controller according to claim 2, is characterized in that, described constant-current phase control unit, specifically for:
Receive described main charging management chip switched to constant-current phase by the preliminary filling stage in the charging stage time, after the first stage switching command of initiating with interrupt mode, according to the maximum constant current value preset and the maximum current parameter value of described at least two charging management chips, determine lower secondary charging management chip, target current corresponding under described constant-current phase of the secondary charging management chip that open and the target current of described main charging management chip corresponding under described constant-current phase that will open of described constant-current phase;
Send the first instruction to this determined secondary charging management chip, perform open operation to control this determined secondary charging management chip, enter constant-current phase, and be adjusted to corresponding target current by from the output current in constant-current phase;
Send the second instruction to described main charging management chip, be adjusted to corresponding target current to control described main charging management chip by from the output current under constant-current phase.
5. battery charge controller according to claim 4, is characterized in that, described constant-voltage phase control unit, for:
Receive described main charging management chip switched to constant-voltage phase by constant-current phase in the charging stage time, after the second stage switching command of initiating with interrupt mode, control the first constant-voltage phase that described main charging management chip and the secondary charging management chip that is in opening enter charging process, with setting voltage described battery is charged, the charging current under wherein said first constant-voltage phase on the basis of described second charging current along with the time constantly reduces;
Detect the charging current inputing to described battery;
Judge whether the charging current detected is less than the maximum current parameter value sum of the current part charging management chip be in all charging management chips of opening;
If so, to current other charging management chips except described part charging management chip be in all charging management chips of opening, send the 3rd instruction, perform shutoff operation to control other charging management chips described; And send the 4th instruction to described part charging management chip, control the second constant-voltage phase that described part charging management chip is operated in charging process, with the voltage of described setting, described battery is charged, the charging current under wherein said second constant-voltage phase on the basis of detected charging current along with the time constantly reduces.
6., according to described battery charge controller arbitrary in claim 1-5, it is characterized in that, described battery charge controller is mobile terminal, and described controller is the central processing unit of described mobile terminal.
7. a charge control method, is characterized in that, is applied to the battery charge controller according to any one of claim 1-6, and described method comprises:
Whether the state of the controller acquisition adapter of described battery charge controller is access state;
Described controller is after the state getting described adapter is access state, and the operating state of each charging management chip at least two charging management chips described in Dynamic controlling, to charge to battery.
8. charge control method according to claim 7, is characterized in that, the initial condition of each charging management chip in described at least two charging management chips is closed condition;
Described controller is after the state getting described adapter is access state, and the operating state of each charging management chip at least two charging management chips described in Dynamic controlling, to charge to described battery, comprising:
Described controller is after the state getting described adapter is access state, and the main charging management chip at least two charging management chips described in control enters the preliminary filling stage of charging process, charges to described battery with the first charging current set;
Described controller is after detecting that described main charging management chip switches to constant-current phase by the preliminary filling stage, the main charging management chip controlled in described two charging management chips is operated in constant-current phase with at least one secondary charging management chip, charges to described battery the output current of described main charging management chip and at least one secondary charging management chip described to be carried out superpose rear the second charging current generating setting;
Described controller is after detecting that described main charging management chip switches to constant-voltage phase by constant-current phase, main charging management chip at least two charging management chips described in control and/or at least one secondary charging management chip are operated in constant-voltage phase, charge to described battery with the voltage set;
Wherein, described first charging current is less than described second charging current, the charging current under described constant-voltage phase on the basis of described second charging current along with the time constantly reduces.
9. charge control method according to claim 8, is characterized in that, also comprises:
Described controller, before the state getting described adapter is access state, sends under-voltage voltage threshold and the constant voltage threshold value of setting to the main charging management chip in described at least two charging management chips;
Main charging management chip in described at least two charging management chips, under the control of described controller, after detecting that the voltage of described battery is less than described under-voltage voltage threshold, enters the preliminary filling stage; Detecting that the voltage of described battery is greater than described under-voltage voltage threshold and after being less than described constant voltage threshold value, the charging stage is switched to constant-current phase by the preliminary filling stage; After detecting that the voltage of described battery is greater than described constant voltage threshold value, the charging stage is switched to constant-voltage phase by constant-current phase.
10. charge control method according to claim 8, it is characterized in that, described controller is after detecting that described main charging management chip switches to constant-current phase by the preliminary filling stage, at least one the secondary charging management chip controlled in described two charging management chips enters constant-current phase, comprising:
Described controller receive described main charging management chip switched to constant-current phase by the preliminary filling stage in the charging stage time, after the first stage switching command of initiating with interrupt mode, according to the maximum constant current value preset and the maximum current parameter value of described at least two charging management chips, determine lower secondary charging management chip, target current corresponding under described constant-current phase of the secondary charging management chip that open and the target current of described main charging management chip corresponding under described constant-current phase that will open of described constant-current phase;
Described controller sends the first instruction to this determined secondary charging management chip, performs open operation, enter constant-current phase, and be adjusted to corresponding target current by from the output current in constant-current phase to control this determined secondary charging management chip;
Described controller sends the second instruction to described main charging management chip, is adjusted to corresponding target current to control described main charging management chip by from the output current under constant-current phase.
11. charge control methods according to claim 10, it is characterized in that, described controller is after detecting that described main charging management chip switches to constant-voltage phase by constant-current phase, main charging management chip at least two charging management chips described in control and/or at least one secondary charging management chip enter the constant-voltage phase of charging process, comprising:
Described controller receive described main charging management chip switched to constant-voltage phase by constant-current phase in the charging stage time, after the second stage switching command of initiating with interrupt mode, control the first constant-voltage phase that described main charging management chip and the secondary charging management chip that is in opening enter charging process, with setting voltage described battery is charged, the charging current under wherein said first constant-voltage phase on the basis of described second charging current along with the time constantly reduces;
Described controller detects the charging current inputing to described battery;
Described controller judges whether the charging current detected is less than the maximum current parameter value sum of the current part charging management chip be in all charging management chips of opening;
If so, described controller, to current other charging management chips except described part charging management chip be in all charging management chips of opening, sends the 3rd instruction, performs shutoff operation to control other charging management chips described; And send the 4th instruction to described part charging management chip, control described part charging management chip and be operated in the second constant-voltage phase, with the voltage of described setting, described battery is charged, the charging current under wherein said second constant-voltage phase on the basis of detected charging current along with the time constantly reduces.
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