CN104300630B - Battery charge controller and method - Google Patents
Battery charge controller and method Download PDFInfo
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- CN104300630B CN104300630B CN201410555033.2A CN201410555033A CN104300630B CN 104300630 B CN104300630 B CN 104300630B CN 201410555033 A CN201410555033 A CN 201410555033A CN 104300630 B CN104300630 B CN 104300630B
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- H02J7/0003—
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
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Abstract
The embodiment of the invention discloses a kind of battery charge controller and method.Described device includes: battery, at least two charging management chip and controller；At least two charging management chip is connected in parallel；In at least two charging management chip, the input of each charging management chip is all connected for the current output terminal with adapter, and the outfan of each charging management chip is all connected with battery, and is connected with controller by bus；Wherein: controller, whether the state being used for obtaining adapter is access state；After the state getting adapter is access state, dynamically control the duty of each charging management chip at least two charging management chip, so that battery to be charged.The technical scheme that the present embodiment provides is by being connected in parallel multiple charging management chips, based on controller, multiple charging management chips are dynamically controlled, charging rate can be accelerated, shorten the charging interval, meet the battery on terminal unit is more rapid, bigger electric current charge requirement.
Description
Technical field
The present embodiments relate to charging technique field, particularly relate to a kind of battery charge controller and method.
Background technology
At present, all multi-terminal equipments are smart mobile phone, panel computer, personal digital assistant etc. such as, all adopts battery to be powered.Fast development along with electronic technology, the function of terminal unit also gets more and more, such as people can be carried out instant messaging, online, object for appreciation game by terminal unit, be seen video, and the display screen of terminal unit is also increasing, thus can consume substantial amounts of electricity when using terminal unit.Therefore, the performance requirement of terminal unit battery and charging rate is also improved therewith.
In the prior art, when using adapter (namely charger) to be charged to the battery on terminal unit, the electric current being typically all adapter output first passes through the single channel charging management chip being attached thereto, then again by single channel charging management chip output to battery.But, the existing charging modes to terminal unit battery, because of the restriction of charging management chip specification, can not meet the charge requirement of electric current more rapid, bigger, thus causing that the charging interval is long, and 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 meeting the battery on terminal unit is more rapid, bigger electric current charge requirement.
First aspect, embodiments provides a kind of battery charge controller, and this device includes: battery, at least two charging management chip and controller；Described at least two charging management chip is connected in parallel；In described at least two charging management chip, the input of each charging management chip is all connected for the current output terminal with adapter, and the outfan of each charging management chip is all connected with described battery, and is connected with described controller by bus；Wherein:
Whether described controller, be access state for obtaining the state of described adapter；
After the state getting described adapter is access state, dynamically control the duty of each charging management chip in described at least two charging management chip, so that described battery to be charged.
Second aspect, the embodiment of the present invention additionally provides a kind of charge control method, is applied to battery charge controller described above, and the method includes:
The controller of described battery charge controller obtains whether the state of described adapter is access state；
Described controller, after the state getting described adapter is access state, dynamically controls the duty of each charging management chip in described at least two charging management chip, so that described battery to be charged.
The technical scheme that the embodiment of the present invention provides, multiple charging management chips are connected in parallel, based on controller, multiple charging management chips are dynamically controlled, it is possible to accelerate charging rate, shorten the charging interval, meet the battery on terminal unit is more rapid, bigger electric current charge requirement.
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.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further detail.It is understood that specific embodiment described herein is used only for explaining the present invention, but not limitation of the invention.It also should be noted that, for the ease of describing, accompanying drawing illustrate only part related to the present invention 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.Referring to Fig. 1, this battery charge controller 100 includes:
Battery 110, at least two charging management chip 120, and controller 130；
At least two charging management chip 120 includes: 1201, second charging management chip 1202 of first charging management chip ... n-th charging management chip 1203, wherein N is the integer be more than or equal to two.
Each charging management chip at least two charging management chip 120 is connected in parallel；
In at least two charging management chip 120, the input of each charging management chip is all for being connected with the current output terminal of adapter 140, and the outfan of each charging management chip is all connected with battery 110, and is connected with controller 130 by bus；
Wherein: controller 130, whether the state being used for obtaining adapter 140 is access state；
After the state getting adapter 140 is access state, dynamically control the duty of each charging management chip at least two charging management chip 120, so that battery 110 to be charged.
In the present embodiment, controller 130 can pass through to detect the voltage of at least two charging management chip 120 input end, judges whether the state of adapter 140 is access state.If described voltage is more than the voltage threshold (being such as 4.5V) set, then judge that the state of adapter 140 is access state, enter charging process, control at least two charging management chip 120 and battery 110 is charged；It it is otherwise non-access state.
Wherein, all corresponding maximum current parameter value of each charging management chip at least two charging management chip 120, its model can be identical, it is possible to different.Maximum current parameter value shows the maximum current value that charging management chip can bear.Each charging management chip all can after adapter 140 be access in; the duty of self is adjusted under the control of controller 130; it is followed successively by preliminary filling stage, constant-current phase and constant-voltage phase with the satisfied charging process to battery, and there is the defencive function such as overvoltage, under-voltage, mistake stream, temperature.Wherein, the charging current inputted under the preliminary filling stage to battery is a less fixed value, for instance for 300mA, and under this stage, cell voltage constantly increases to brownout threshold along with the carrying out of charging process；The charging current inputted under constant-current phase to battery is the maximum charging current in whole charging process, for instance for 2A, under this stage, cell voltage continues constantly to increase to constant voltage threshold value along with the carrying out of charging process；The basis of the charging current inputted under constant-voltage phase to battery charging current under constant-current phase constantly reduces over time, until input to the charging current of battery reaches the full charging stream threshold value (such as 50mA) set, under this stage, cell voltage is invariable, for constant voltage threshold value.
For example, at least two charging management chip 120 includes 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-th charging management chip), the original state of each charging management chip is closed mode, the controller 130 control to each charging management chip, it may include:
After the state getting adapter 140 is access state, only drive main charging management chip in the preliminary filling stage of charging process, thus only the output electric current of main charging management chip being streamed to battery 110 as charged electrical, so that battery 110 to be charged；
Constant-current phase in charging process simultaneously drives the part or all of chip in main charging management chip and the plurality of secondary charging management chip, thus being streamed to battery 110 as charged electrical after being overlapped by the output electric current of main charging management chip with the secondary charging management chip driven, so that battery 110 is charged；
Constant-voltage phase in charging process, after charging current is less than the maximum current parameter value of main charging management chip, close the secondary charging management chip that constant-current phase drives, thus only the output electric current of main charging management chip being streamed to battery 110 as charged electrical, so that battery 110 is charged.
Certainly, each charging management chip can also be controlled by by controller 130 otherwise, and this is not construed as limiting by the present embodiment.Such as, after the state getting adapter 140 is access state, also it is simultaneously drive main charging management chip and multiple secondary charging management chip in the preliminary filling stage of charging process, thus being streamed to battery 110 as charged electrical after being overlapped by the output electric current of main charging management chip with the secondary charging management chip driven, so that battery 110 is charged.The output electric current sum of each charging management chip obtained in this fashion, should be equal with the output electric 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, multiple charging management chips are dynamically controlled, it is thus possible to the Multi-path electricity stream exported by multiple charging management chips is overlapped battery is charged, accelerate charging rate, shorten the charging interval, meet the battery on terminal unit is more rapid, bigger electric current charge requirement.
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 structure of controller, on the basis of above-described embodiment one, is made to optimize further by the present embodiment.Referring to Fig. 2, this battery charge controller 200 includes:
Battery 210, at least two charging management chip 220, and controller 230；
At least two charging management chip 220 includes: 2201, second charging management chip 2202 of first charging management chip ... n-th charging management chip, wherein N is the integer be more than or equal to two.
Each charging management chip at least two charging management chip 220 is connected in parallel；
In at least two charging management chip 220, the input of each charging management chip is all for being connected with the current output terminal of adapter 240, and the outfan of each charging management chip is all connected with battery 210, and is connected with controller 230 by bus；
Wherein: controller 230, whether the state being used for obtaining adapter 240 is access state；
After the state getting adapter 240 is access state, dynamically control the duty of each charging management chip at least two charging management chip 220, so that battery 210 to be charged.
In the present embodiment, controller 230 can an optional charging management chip be as main charging management chip from least two charging management chip 220, and other charging management chips are all as secondary charging management chip.
The original state of each charging management chip at least two charging management chip 220 is closed mode；
Controller 230, including:
Whether access state acquiring unit 2301, be access state for obtaining the state of adapter 240；
Preliminary filling stage control unit 2302, after in the state getting adapter 240 being access state, control the main charging management chip at least two charging management chip 220 and enter the preliminary filling stage of charging process, with the first charging current set, battery 210 is charged；
Constant-current phase control unit 2303, for after detecting that main charging management chip is switched to constant-current phase by the preliminary filling stage, controlling the main charging management chip at least two charging management chip 220 and at least one secondary charging management chip is operated in constant-current phase, battery 210 is charged by the second charging current generating setting with the output electric current by main charging management chip and at least one secondary charging management chip described after being overlapped；
Constant-voltage phase control unit 2304, for after detecting that main charging management chip is switched to constant-voltage phase by constant-current phase, control the main charging management chip at least two charging management chip 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, and the charging current under constant-voltage phase constantly reduces over time on the basis of the second charging current.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, is primarily involved in constant-current phase, constant-voltage phase supplementing charging current, thus the charging of bigger electric current can be realized.
On the basis of technique scheme, described controller 230 also includes:
Voltage threshold transmitting element 2305, for, before the state getting adapter 240 is access state, sending the brownout voltage threshold value and constant voltage threshold value that set to the main charging management chip at least two charging management chip 220；
Main charging management chip at least two charging management chip 220, is used for:
Under the control of preliminary filling stage control unit 2302, after detecting that the voltage of battery 210 is less than described brownout voltage threshold value, enter the preliminary filling stage；
Detect the voltage of battery 210 more than described brownout voltage threshold value and less than described constant voltage threshold value after, the charging stage is switched to constant-current phase by the preliminary filling stage；
After detecting that the voltage of battery 210 is more 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 simultaneously drive multiple charging management chip output electric current based on controller constant-current phase in charging process, it is thus possible to the Multi-path electricity stream exported by multiple charging management chips in constant-current phase is overlapped battery is charged, it is greatly accelerated charging rate, shortens the charging interval.
Embodiment three
The present embodiment can based on above-described embodiment, it is provided that 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 the electronic equipment using lithium battery to be powered.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 in the charging stage by the preliminary filling stage time, with after the first stage switching command that interrupt mode is initiated, maximum current parameter value according to default maximum constant current value and at least two charging management chip 220, it is determined that target current that secondary charging management chip that constant-current phase is lower to open, the secondary charging management chip to open are corresponding under described constant-current phase and the target current corresponding under described constant-current phase of main charging management chip；
Send the first instruction to this determined secondary charging management chip, to control this determined secondary charging management chip execution open operation, enter constant-current phase, and certainly will be adjusted to corresponding target current in the output electric current of constant-current phase；
Send the second instruction to main charging management chip, corresponding target current will be adjusted to from the output electric current under constant-current phase controlling described main charging management chip.
For example, the maximum constant current value preset is 5A, in at least two charging management chip 220, the maximum current parameter value of each secondary charging management chip is 2A, then can determine that the lower secondary charging management chip to open of constant-current phase is: first secondary charging management chip and second secondary charging management chip, and target current respectively 2A, 1A and 2A that first secondary charging management chip, second secondary charging management chip and main charging management chip are corresponding under constant-current phase.Certainly, the target current corresponding under constant-current phase of first secondary charging management chip, second secondary charging management chip and main charging management chip also can respectively 2A, 2A and 1A, and also can respectively 1.5A, 1.5A and 2A, as long as the second charging current that target current sum is setting that described three charging management chips are corresponding under constant-current phase, 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, is used for:
Receive main charging management chip switched to constant-voltage phase in the charging stage by constant-current phase time, with after the second stage switching command that interrupt mode is initiated, the secondary charging management chip controlling main charging management chip and be in opening enters the first constant-voltage phase of charging process, with the voltage set, battery 210 being charged, wherein the charging current under the first constant-voltage phase constantly reduces over time on the basis of the second charging current；
Detection inputs the charging current to battery 210；
Judge that the charging current that detects is whether less than the maximum current parameter value sum of the part charging management chip in all charging management chips being currently at opening；
If it is, to other charging management chips except described part charging management chip in all charging management chips being currently at opening, send the 3rd instruction, to control described other charging management chips execution shutoff operation；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 of charging process, with the voltage of described setting, battery 210 being charged, wherein the charging current under the second constant-voltage phase constantly reduces over time on the basis of the charging current detected.
In the present embodiment, controller 230 is after the secondary charging management chip controlling main charging management chip and be in opening enters the first constant-voltage phase of charging process, the charging current being once currently entered to battery 210 can be detected every the time of setting (such as 3 minutes), by comparing the maximum current parameter value sum of the part pair charging management chip in the charging current detected and the secondary charging management chip being currently at opening, identify that can the charging current that detect be provided by the part charging management chip in the secondary charging management chip being in opening.If it is, trigger other the secondary charging management chips execution shutoff operations except described part pair charging management chip except being currently in the secondary charging management chip of opening, and control described part pair charging management chip and continue to operate in constant-current phase.nullFor example，The all charging management chips being currently at 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 current input is 3A to the charging current value of battery 210，The maximum current parameter value sum 4A of any two charging management chip that the charging current 3A therefore detected is less than in described three charging management chips，Now controller 230 can cut out an arbitrary charging management chip in described three charging management chips (being such as second secondary charging management chip)，Making its output electric current is 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，Charging current after the superposition of the two output constantly reduces over time on the basis of the charging current 3A detected.
The technical scheme that the present embodiment provides, arranges the charging management chip of multiple parallel connection in charging device, and the partial period based on controller constant-current phase in charging process and constant-voltage phase simultaneously drives multiple charging management chip output electric current.With come compared with battery powered scheme only with single charging management chip, the present embodiment can provide bigger charging current, it is rapidly completed the charging work of high capacity cell, and the power consumption of single charging management chip can be reduced, improve chip heating 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.Referring to Fig. 3, this charge control method includes following operation:
Operation 310, the controller of battery charge controller obtain whether the state of adapter is access state；
Operation 320, controller, after the state getting adapter is access state, dynamically control the duty of each charging management chip at least two charging management chip, so that battery to be charged.
Further, the original state of each charging management chip in described at least two charging management chip is closed mode；
Described controller, after the state getting adapter is access state, dynamically controls the duty of each charging management chip at least two charging management chip, so that battery is charged, including:
Controller, after the state getting adapter is access state, controls the main charging management chip at least two charging management chip and enters the preliminary filling stage of charging process, with the first charging current set, battery is charged；
Controller is after detecting that main charging management chip is switched to constant-current phase by the preliminary filling stage, controlling the main charging management chip in two charging management chips and at least one secondary charging management chip is operated in constant-current phase, battery is charged by the second charging current generating setting with the output electric current by main charging management chip and at least one secondary charging management chip described after being overlapped；
Controller is after detecting that main charging management chip is switched to constant-voltage phase by constant-current phase, control the main charging management chip in described at least two charging management chip and/or at least one secondary charging management chip is operated in constant-voltage phase, with the voltage set, described battery is charged；
Wherein, described first charging current is less than described second charging current, and the charging current under described constant-voltage phase constantly reduces over time on the basis of described second charging current.
Further, the charge control method that the present embodiment provides also includes:
Controller, before the state getting adapter is access state, sends the brownout voltage threshold value and constant voltage threshold value that set to the main charging management chip at least two charging management chip；
Main charging management chip in described at least two charging management chip under the control of the controller, after detecting that the voltage of battery is less than brownout voltage threshold value, enters the preliminary filling stage；Detect the voltage of battery more than brownout voltage threshold value and less than constant voltage threshold value after, the charging stage is switched to constant-current phase by the preliminary filling stage；After detecting that the voltage of battery is more than constant voltage threshold value, the charging stage is switched to constant-voltage phase by constant-current phase.
Further, controller, after detecting that main charging management chip is switched to constant-current phase by the preliminary filling stage, controls the secondary charging management chip of at least one in two charging management chips and enters constant-current phase, including:
Controller receive main charging management chip switched to constant-current phase in the charging stage by the preliminary filling stage time, with after the first stage switching command that interrupt mode is initiated, maximum current parameter value according to default maximum constant current value and described at least two charging management chip, it is determined that target current that secondary charging management chip that constant-current phase is lower to open, the secondary charging management chip to open are corresponding under described constant-current phase and the target current corresponding under described constant-current phase of main charging management chip；
Controller sends the first instruction to this determined secondary charging management chip, to control this determined secondary charging management chip execution open operation, enters constant-current phase, and certainly will be adjusted to corresponding target current in the output electric current of constant-current phase；
Controller sends the second instruction to main charging management chip, will be adjusted to corresponding target current from the output electric current under constant-current phase controlling main charging management chip.
Further, controller is after detecting that main charging management chip is switched to constant-voltage phase by constant-current phase, control the main charging management chip at least two charging management chip and/or the constant-voltage phase of at least one secondary charging management chip entrance charging process, including:
Controller receive described main charging management chip switched to constant-voltage phase in the charging stage by constant-current phase time, with after the second stage switching command that interrupt mode is initiated, the secondary charging management chip controlling main charging management chip and be in opening enters the first constant-voltage phase of charging process, with the voltage set, battery being charged, wherein the charging current under the first constant-voltage phase constantly reduces over time on the basis of described second charging current；
The charging current of controller detection input extremely described battery；
Controller judges that the charging current that detects is whether less than the maximum current parameter value sum of the part charging management chip in all charging management chips being currently at opening；
If it is, controller is to other charging management chips except described part charging management chip in all charging management chips being currently at opening, send the 3rd instruction, to control described other charging management chips execution shutoff operation；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 being charged, wherein the charging current under the second constant-voltage phase constantly reduces over time on the basis of the charging current detected.
The charge control method that the present embodiment provides, possess the identical inventive concept of battery charge controller and beneficial effect that provide with any embodiment of the present invention, not detailed description in the present embodiment, the charging device can set forth referring to the various embodiments described above.
Note, above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art 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 without departing from protection scope of the present invention.Therefore, although the present invention being described in further detail by above example, but the present invention is not limited only to above example, when without departing from present inventive concept, other Equivalent embodiments more can also be included, and the scope of the present invention is determined by appended right.
Claims (7)
1. a battery charge controller, it is characterised in that including: battery, at least two charging management chip and controller；Described at least two charging management chip is connected in parallel；In described at least two charging management chip, the input of each charging management chip is all connected for the current output terminal with adapter, and the outfan of each charging management chip is all connected with described battery, and is connected with described controller by bus；Wherein:
Whether described controller, be access state for obtaining the state of described adapter；
After the state getting described adapter is access state, dynamically control the duty of each charging management chip in described at least two charging management chip, so that described battery to be charged；
Wherein, the original state of each charging management chip in described at least two charging management chip is closed mode；
Described controller, including:
Whether access state acquiring unit, be access state for obtaining the state of described adapter；
Preliminary filling stage control unit, after in the state getting described adapter being access state, control the main charging management chip in described at least two charging management chip and enter the preliminary filling stage of charging process, with the first charging current set, described battery is charged；
Constant-current phase control unit, for after detecting that described main charging management chip is switched to constant-current phase by the preliminary filling stage, controlling the main charging management chip in described at least two charging management chip and at least one secondary charging management chip is operated in constant-current phase, described battery is charged by the second charging current generating setting with the output electric current by described main charging management chip and at least one secondary charging management chip described after being overlapped；
Constant-voltage phase control unit, for after detecting that described main charging management chip is switched to constant-voltage phase by constant-current phase, control the main charging management chip in described at least two charging management chip and/or at least one secondary charging management chip is operated in constant-voltage phase, with the voltage set, described battery is charged；
Wherein, described first charging current is less than described second charging current, and the charging current under described constant-voltage phase constantly reduces over time on the basis of described second charging current；
Accordingly, described constant-current phase control unit, specifically for:
Receive described main charging management chip switched to constant-current phase in the charging stage by the preliminary filling stage time, with after the first stage switching command that interrupt mode is initiated, maximum current parameter value according to default maximum constant current value and described at least two charging management chip, it is determined that target current that secondary charging management chip that described constant-current phase is lower to open, the secondary charging management chip to open are corresponding under described constant-current phase and the target current corresponding under described constant-current phase of described main charging management chip；
Send the first instruction to this determined secondary charging management chip, to control this determined secondary charging management chip execution open operation, enter constant-current phase, and certainly will be adjusted to corresponding target current in the output electric current of constant-current phase；
Send the second instruction to described main charging management chip, corresponding target current will be adjusted to from the output electric current under constant-current phase controlling described main charging management chip.
2. battery charge controller according to claim 1, it is characterised in that described controller also includes:
Voltage threshold transmitting element, for, before the state getting described adapter is access state, sending the brownout voltage threshold value and constant voltage threshold value that set to the main charging management chip in described at least two charging management chip；
Main charging management chip in described at least two charging management chip, is used for:
Under the control of described preliminary filling stage control unit, after detecting that the voltage of described battery is less than described brownout voltage threshold value, enter the preliminary filling stage；
Detect the voltage of described battery more than described brownout voltage threshold value and less than described constant voltage threshold value after, the charging stage is switched to constant-current phase by the preliminary filling stage；
After detecting that the voltage of described battery is more than described constant voltage threshold value, the charging stage is switched to constant-voltage phase by constant-current phase.
3. battery charge controller according to claim 1, it is characterised in that described constant-voltage phase control unit, is used for:
Receive described main charging management chip switched to constant-voltage phase in the charging stage by constant-current phase time, with after the second stage switching command that interrupt mode is initiated, the secondary charging management chip controlling described main charging management chip and be in opening enters the first constant-voltage phase of charging process, with the voltage set, described battery being charged, the charging current under wherein said first constant-voltage phase constantly reduces over time on the basis of described second charging current；
The charging current of detection input extremely described battery；
Judge that the charging current that detects is whether less than the maximum current parameter value sum of the part charging management chip in all charging management chips being currently at opening；
If it is, to other charging management chips except described part charging management chip in all charging management chips being currently at opening, send the 3rd instruction, to control described other charging management chips execution shutoff operation；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 of charging process, with the voltage of described setting, described battery being charged, the charging current under wherein said second constant-voltage phase constantly reduces over time on the basis of the charging current detected.
4. according to described battery charge controller arbitrary in claim 1-3, it is characterised in that described battery charge controller is mobile terminal, and described controller is the central processing unit of described mobile terminal.
5. a charge control method, it is characterised in that being applied to the battery charge controller according to any one of claim 1-4, described method includes:
The controller of described battery charge controller obtains whether the state of adapter is access state；
Described controller, after the state getting described adapter is access state, dynamically controls the duty of each charging management chip in described at least two charging management chip, so that battery to be charged；
Wherein, the original state of each charging management chip in described at least two charging management chip is closed mode；
Described controller, after the state getting described adapter is access state, dynamically controls the duty of each charging management chip in described at least two charging management chip, so that described battery is charged, including:
Described controller, after the state getting described adapter is access state, controls the main charging management chip in described at least two charging management chip and enters the preliminary filling stage of charging process, with the first charging current set, described battery is charged；
Described controller is after detecting that described main charging management chip is switched to constant-current phase by the preliminary filling stage, controlling the main charging management chip in said two charging management chip and at least one secondary charging management chip is operated in constant-current phase, described battery is charged by the second charging current generating setting with the output electric current by described main charging management chip and at least one secondary charging management chip described after being overlapped；
Described controller is after detecting that described main charging management chip is switched to constant-voltage phase by constant-current phase, control the main charging management chip in described at least two charging management chip and/or at least one secondary charging management chip is operated in constant-voltage phase, with the voltage set, described battery is charged；
Wherein, described first charging current is less than described second charging current, and the charging current under described constant-voltage phase constantly reduces over time on the basis of described second charging current；
Accordingly, described controller, after detecting that described main charging management chip is switched to constant-current phase by the preliminary filling stage, controls the secondary charging management chip of at least one in said two charging management chip and enters constant-current phase, including:
Described controller receive described main charging management chip switched to constant-current phase in the charging stage by the preliminary filling stage time, with after the first stage switching command that interrupt mode is initiated, maximum current parameter value according to default maximum constant current value and described at least two charging management chip, it is determined that target current that secondary charging management chip that described constant-current phase is lower to open, the secondary charging management chip to open are corresponding under described constant-current phase and the target current corresponding under described constant-current phase of described main charging management chip；
Described controller sends the first instruction to this determined secondary charging management chip, to control this determined secondary charging management chip execution open operation, enters constant-current phase, and certainly will be adjusted to corresponding target current in the output electric current of constant-current phase；
Described controller sends the second instruction to described main charging management chip, will be adjusted to corresponding target current from the output electric current under constant-current phase controlling described main charging management chip.
6. charge control method according to claim 5, it is characterised in that also include:
Described controller, before the state getting described adapter is access state, sends the brownout voltage threshold value and constant voltage threshold value that set to the main charging management chip in described at least two charging management chip；
Main charging management chip in described at least two charging management chip is under the control of described controller, after detecting that the voltage of described battery is less than described brownout voltage threshold value, enters the preliminary filling stage；Detect the voltage of described battery more than described brownout voltage threshold value and less than described constant voltage threshold value after, the charging stage is switched to constant-current phase by the preliminary filling stage；After detecting that the voltage of described battery is more than described constant voltage threshold value, the charging stage is switched to constant-voltage phase by constant-current phase.
7. charge control method according to claim 5, it is characterized in that, described controller is after detecting that described main charging management chip is switched to constant-voltage phase by constant-current phase, control the main charging management chip in described at least two charging management chip and/or the constant-voltage phase of at least one secondary charging management chip entrance charging process, including:
Described controller receive described main charging management chip switched to constant-voltage phase in the charging stage by constant-current phase time, with after the second stage switching command that interrupt mode is initiated, the secondary charging management chip controlling described main charging management chip and be in opening enters the first constant-voltage phase of charging process, with the voltage set, described battery being charged, the charging current under wherein said first constant-voltage phase constantly reduces over time on the basis of described second charging current；
The charging current of described controller detection input extremely described battery；
Described controller judges that the charging current that detects is whether less than the maximum current parameter value sum of the part charging management chip in all charging management chips being currently at opening；
If it is, described controller is to other charging management chips except described part charging management chip in all charging management chips being currently at opening, send the 3rd instruction, to control described other charging management chips execution shutoff operation；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 being charged, the charging current under wherein said second constant-voltage phase constantly reduces over time on the basis of the charging current detected.
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| CN105762865B (en) * | 2016-02-29 | 2019-02-01 | 宇龙计算机通信科技(深圳)有限公司 | A kind of charging unit and charging method |
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