CN103269098A - Method for improving double-battery charging efficiency and mobile terminal - Google Patents
Method for improving double-battery charging efficiency and mobile terminal Download PDFInfo
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- CN103269098A CN103269098A CN2013101892088A CN201310189208A CN103269098A CN 103269098 A CN103269098 A CN 103269098A CN 2013101892088 A CN2013101892088 A CN 2013101892088A CN 201310189208 A CN201310189208 A CN 201310189208A CN 103269098 A CN103269098 A CN 103269098A
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Abstract
The invention discloses a method for improving double-battery charging efficiency and a mobile terminal. The method comprises the steps of A starting a first charging module to charge a first battery and judging charging stages where the first battery located, and B starting a second charging module when the first battery is judged in a CV stage, and distributing a first charging current balance to a second battery to enable the first battery and the second battery to be charged at the same time. According to the method, the first charging current balance is distributed to the second battery, the first battery and the second battery are charged at the same time in the CV stage of the first battery, loss of charging current balance in the CV stage is avoided, a charging mode is optimized, charging efficiency is improved, charging time is saved, and product market competitiveness is ensured.
Description
Technical field
The present invention relates to battery boosting technology, particularly a kind of method and portable terminal that improves the double-battery charge electrical efficiency.
Background technology
At present, portable terminal more and more is subjected to consumer's favor, and the user can realize functions such as surfing the Net, navigate, play games by portable terminal.The function of portable terminal is more powerful, and its requirement to power supply is just more high.In the prior art portable terminal is carried out many improvement and saved electricity consumption, these improved principles all are how to reduce electric quantity consumption to come prolongs standby time, its effect and not obvious is powered and will be prolonged the stand-by time of portable terminal greatly if increase a battery.
Existing battery charging process generally is divided into PC(Pre-Charge, preliminary filling), CC(Constant Current constant current), CV(Constant Voltage constant voltage) three phases.The PC stage is trickle charge, and this moment, charging current was less; When battery electric quantity is very low, can protect battery through the PC stage earlier, avoid heavy current impact to bring infringement for the inside battery structure.When cell voltage is not low (for example more than the 2.9V), then begin large current charge, namely adopt the maximum current charging that allows, just enter the so-called CC stage, this is in order to save the charging interval.When voltage reaches or approaches (as about 4.2V) when being full of voltage, then enter the CV stage, fill to such an extent that too high causing overcharges for fear of cell voltage, battery is caused certain damage, the charging current in CV stage can reduce gradually.Yet, the problem that portable terminal with double cell need be considered how to improve charge efficiency and not influence portable terminal work when charging: as what charging modes two batteries are adopted, how the charging current of two batteries distributes, and how to be full of electricity etc. in the shortest time.In view of this, the invention provides a kind of method and portable terminal that improves the double-battery charge electrical efficiency.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art part, the object of the present invention is to provide a kind of method and portable terminal that improves the double-battery charge electrical efficiency, to solve the problem that the prior art mobile terminal standby time is short, the double-battery charge electrical efficiency is low.
In order to achieve the above object, the present invention has taked following technical scheme:
A kind of method that improves the double-battery charge electrical efficiency, it comprises:
A, open first charging module to first battery charge, and judge the residing charging stage of first battery;
B, be CV during the stage when judging that first battery is in, open second charging module, simultaneously the first charging current remaining sum is distributed to second battery, win battery and second battery are charged simultaneously.
The method of described raising double-battery charge electrical efficiency, wherein, described steps A specifically comprises:
A1, detect the electric weight of first battery and second battery in real time, judge that whether the electric weight of first battery is less than predetermined voltage threshold;
A2, when the electric weight of first battery during less than predetermined voltage threshold, open first charging module to first battery charge, and keep the closed condition of second charging module;
A3, detect the size of first charging current in real time, judge that when first charging current begins to descend first battery enters the CV stage.
The method of described raising double-battery charge electrical efficiency wherein, also comprised before described steps A: the size of electric current stepping is set, calculates each spaced points electric current according to total current and electric current step value; The absolute value of difference is the value of electric current stepping between every adjacent two spaced points electric currents.
The method of described raising double-battery charge electrical efficiency, wherein, described step B specifically comprises:
B1, unlatching second charging module are to second battery charge;
B2, judge whether current first charging current equals one of them described spaced points electric current:
B3, when first charging current equals one of them described spaced points electric current, the size of adjusting second charging current makes it equal the first charging current remaining sum, namely total charging current deducts current spaced points electric current.
The method of described raising double-battery charge electrical efficiency wherein, also comprises after described step B:
C, detect the current charged state of second battery, and whether the electric weight of judging first battery is less than predetermined voltage threshold;
D, the electric weight during less than predetermined voltage threshold that enters CV stage and first battery when the charged state of judging second battery are distributed to first battery with the first charging current remaining sum, and win battery and second battery are charged simultaneously.
A kind of portable terminal for the method that realizes described raising double-battery charge electrical efficiency, it comprises: first battery, second battery, first charging module, second charging module and controller;
Described first charging module is used for generating first charging current and gives first battery charge;
Described second charging module is used for generating second charging current and gives second battery charge;
Described controller is used for the keying of control first charging module and second charging module and judges the charged state that first battery is current; When judging that first battery is in CV during the stage, open second charging module, the first charging current remaining sum is distributed to second battery, win battery and second battery are charged simultaneously;
Described first battery connects first charging module, and second battery connects second charging module, and described controller connects first battery, second battery, first charging module and second charging module.
Described portable terminal, wherein, described controller comprises:
Detecting unit is used for detecting in real time first battery, the electric weight of second battery and the size of first charging current;
Judging unit, the electric weight that is used for judging first battery judge that whether less than predetermined voltage threshold and judge whether described first battery enters the CV stage first battery enters the CV stage when first charging current begins to descend;
Switch element when being used for electric weight at judgment unit judges first battery less than predetermined voltage threshold, being opened first charging module first battery is charged, and keeps the closed condition of second charging module;
Described control unit connects detecting unit and judging unit.
Described portable terminal, wherein, described controller also comprises the unit is set, and is used for arranging the size of electric current stepping, calculates each spaced points electric current according to total charging current and electric current step value; The absolute value of difference is the value of electric current stepping between every adjacent two spaced points electric currents;
The described connection judgment unit, unit that arranges.
Described portable terminal, wherein,
Described judging unit also is used for judging whether current first charging current equals one of them described spaced points electric current;
Described switch element also is used for entering CV during the stage at judgment unit judges first battery, opens second charging module to second battery charge; And when judgment unit judges first charging current equaled one of them spaced points electric current, the size of adjusting second charging current made it equal the first charging current remaining sum, is that total current deducts current spaced points electric current.
Described portable terminal, wherein,
Described judging unit is also for detection of the current charged state of second battery, and whether the electric weight of judging first battery is less than predetermined voltage threshold;
Described switch element also is used for entering the CV stage in the charged state of judgment unit judges second battery, and the electric weight of first battery distributes to first battery with the charging current remaining sum during less than predetermined voltage threshold, and first battery and second battery charge simultaneously.
Compared to prior art, a kind of method and portable terminal that improves the double-battery charge electrical efficiency provided by the invention, to first battery charge time, judge the charged state of first battery, when the charged state of judging first battery is that CV is during the stage, open second charging module, the charging current remaining sum is distributed to second battery, in the CV stage of first battery, first battery and second battery charge simultaneously, avoided the loss of charging current remaining sum in CV stage, optimize charging modes, improved charge efficiency and also saved the charging interval, guaranteed the competitiveness of product on market.
Description of drawings
Fig. 1 has the method for charging batteries flow chart of the portable terminal of double cell for the present invention.
Fig. 2 has the method for charging batteries one preferred embodiment charging current schematic diagram of the portable terminal of double cell for the present invention.
Fig. 3 improves the method flow diagram of double-battery charge electrical efficiency for the present invention.
Fig. 4 improves the method one preferred embodiment charging current schematic diagram of double-battery charge electrical efficiency for the present invention.
Fig. 5 improves the structured flowchart of the portable terminal of double-battery charge electrical efficiency for the present invention.
Fig. 6 improves the structured flowchart of controller of the portable terminal of double-battery charge electrical efficiency for the present invention.
Embodiment
The invention provides a kind of method and portable terminal that improves the double-battery charge electrical efficiency, clearer, clear and definite for making purpose of the present invention, technical scheme and effect, below develop simultaneously with reference to accompanying drawing that the present invention is described in more detail for embodiment.Should be appreciated that specific embodiment described herein only in order to explaining the present invention, and be not used in restriction the present invention.
The invention provides a kind of method for charging batteries with portable terminal of double cell, as shown in Figure 1, it comprises:
Step S100, start the double cell detecting pattern according to the interrupt signal that produces, obtain the state parameter of first battery and second battery, judge whether charger inserts portable terminal: if, execution in step S200; Otherwise, execution in step S300;
Step S200, startup battery charging mode according to user are judged the situation in place of first battery, second battery, and are started corresponding charge mode;
Step S300, start battery powered mode, judge the keying state of first charging module, second charging module, and first charging module, second charging module are controlled accordingly.
In step S100, the mode that interrupt signal produces comprises:
Charger insert or when extracting charging inlet control unit produce interrupt signal;
Perhaps battery insert or when extracting portable terminal control unit produce interrupt signal;
Perhaps control unit produces interrupt signal when first Preset Time arrives;
Perhaps wake module produces interrupt signal when second Preset Time arrives.
As long as charger inserts or extracts, battery inserts or extract and will produce interrupt signal and start the double cell detecting pattern one time.When the portable terminal operate as normal, then produce interrupt signal every first Preset Time and start the double cell detecting pattern one time.When mobile terminal standby, then wake a portable terminal up and start the double cell detecting pattern one time every second Preset Time.In the specific implementation, other modes also can be set produce interrupt signal, for example when first battery is overheated, produce interrupt signal and start the double cell detecting pattern, cause overheated to first over-charging of battery when judging whether to charge or when using whether not close first charging module and continue first battery charge is caused overheated, thereby take corresponding processing.
Be example to produce interrupt signal every first Preset Time, described first Preset Time is 1 minute, portable terminal started a double cell detecting pattern every 1 minute, then obtain the state parameter of current first battery and second battery, for follow-up judgement provides reference data, as obtain the current electric weight of first battery and judge whether it is full of; Detect when charger is in the insertion state and represent that portable terminal is in charged state, start the charging modes that battery charging mode according to user is controlled first battery and second battery; Detect and represent when charger does not insert that portable terminal is in running order, need to start the supply power mode that battery powered mode is controlled first battery and second battery.Should be noted that first Preset Time also can be set to other times, or set up on their own by the user.
In step S200, based on user's use habit, first battery, second battery may two all insert and use in the portable terminal or have only an insertion, or forget the insertion battery; Therefore, step S200 specifically comprises: judge whether first battery, second battery be in place.
In the present embodiment, the battery of namely representing in place inserts portable terminal.First battery and second battery in bit combination situation in following 4 is arranged:
Situation 1, when first battery and second battery are all in place, start the double-battery charge power mode.
In the embodiment of the invention, when two batteries all insert and need charging, adopt priority or over-over mode to charge, also cry the serial mode charging, can monopolize the load capacity of charging input end to satisfy charging circuit, namely be when charging charger input current only import in the charging circuit, and this charging circuit to be unlocked be a battery charge.Be example in the priority mode, the double-battery charge power mode of a preferred embodiment provided by the invention comprises:
Step 1, judge whether the electric weight of first battery is full, if then execution in step 2; Otherwise, open first charging module first battery is charged, withdraw from the double cell detecting pattern.
The electric weight of first battery is generally lower when just beginning to charge, and needs to first battery charge, to the second battery inoperation.Withdraw from the double cell detecting pattern afterwards, wait for the electric weight that detects first battery after 1 minute again; Then continue first battery is charged if electric weight is discontented, and then withdraw from the double cell detecting pattern, wait for that detection next time is full of until the electric weight of first battery, just carries out following step.Wherein, first charging current of first charging module output is full of basically through PC, CC among Fig. 2, the electric weight of CV first battery after the stage as shown in Figure 2.
Step 2, judge whether first charging module is opened; If, then close first charging module, execution in step 3, otherwise, direct execution in step 3.
If first charging module stays open, i.e. expression is still to first battery charge.First battery need be turned off first charging module after being full of electricity, and as T place among Fig. 4, can open the charging current that second charging module makes charger and be diverted in second battery this moment, avoids over-charging of battery to influence useful life and the safety of battery.First battery is not second battery to be charged after being full of electricity, needs to judge whether second battery has necessity of charging earlier, avoids the waste of charging current and protects second battery at once.
Step 3, judge whether the electric weight of second battery is full, if then execution in step 4; Otherwise, open second charging module second battery is charged, withdraw from the double cell detecting pattern.
It is noted that in this step when opening and to withdraw from the double cell detecting pattern after second charging module charges to second battery.Wait for after 1 minute, can judge the electric weight of first battery again, be full of electricity and first charging module is closed based on above-mentioned judgement first battery, enter step 3 again and judge whether second battery has been full of.If do not have, then withdraw from double cell detecting pattern wait detection next time again, just enter following step 4 until judging that second battery is full of.Second charging current as shown in Figure 4.
Step 4, judge whether second charging module is opened; If, then close second charging module, withdraw from the double cell detecting pattern, otherwise, the double cell detecting pattern directly withdrawed from.
Second battery is full of also need be turned off second charging module behind the electricity and protect second battery.The user who it should be noted that can use portable terminal when charging.All insert the situation of charging based on two batteries, when first battery is full of electricity and during to second battery charge, the electric weight of first battery may be made the part of using up by the user.The embodiment of the invention is made suitable adjustment to above-mentioned steps 1 ~ 4.In step 2, first battery is carried out full amount mark after closing first charging module, when entering double cell detecting pattern execution in step 1 again, can judge that the electric weight of first battery is full, still continue second battery charge.But in fact the electric weight of first battery reduces gradually owing to user's use.Be full of the full amount mark that to cancel first battery behind the electricity on second battery, the current electric quantity of first battery is actual electric weight when entering double cell detecting pattern execution in step 1 again, no longer be false full amount, begin first battery is charged the charging method of described over-over mode that Here it is again.
Situation 2, when in place and second battery is not in place when first battery, start first battery charging mode according to user.Described first battery charging mode according to user comprises:
Step 21, judge whether the electric weight of first battery is full, if then execution in step 22; Otherwise, open first charging module first battery is charged, withdraw from the double cell detecting pattern;
Step 22, judge whether first charging module is opened; If, then close first charging module, withdraw from the double cell detecting pattern, otherwise, the double cell detecting pattern directly withdrawed from.
When the insertion of first battery and second battery do not insert, only need charge to first battery.Be full of and close first charging module behind the electricity and get final product.In the specific implementation, can show that the charged state of first battery shows at the display screen of portable terminal, and point out the second battery vacancy.
Situation 3, when not in place and second battery is in place when first battery, start second battery charging mode according to user.Described second battery charging mode according to user comprises:
Step 31, judge whether the electric weight of second battery is full, if then execution in step 32; Otherwise, open second charging module second battery is charged, withdraw from the double cell detecting pattern;
Step 32, judge whether second charging module is opened; If, then close second charging module, withdraw from the double cell detecting pattern, otherwise, the double cell detecting pattern directly withdrawed from.
The charging method of first battery charging mode according to user and second battery charging mode according to user is similar, just the object difference of charging.Can show also that in like manner the charged state of second battery shows at the display screen of portable terminal, and point out the first battery vacancy.
Situation 4, when not in place and second battery is not in place when first battery, start no charge mode.Described no charge mode comprises: close first charging module and second charging module, do not have battery in the prompting customer mobile terminal, withdraw from the double cell detecting pattern.
If charger does not insert, then portable terminal is in running order, needs to control first battery and second battery to the supply power mode of portable terminal by following step S300.Step S300 specifically comprises:
The first step, judge whether first charging module is opened: if then close first charging module, carried out for second step; Otherwise, directly carried out for second step;
Second the step, judge whether second charging module is opened: if then close second charging module, withdraw from the double cell detecting pattern; Otherwise, withdraw from the double cell detecting pattern.
Do not have charger during based on the portable terminal operate as normal, need definite first charging module and second charging module to close, avoid influencing the power supply state of first battery and second battery.
Please continue to consult Fig. 2, in above-mentioned employing first charging current and second charging current that successively mode is charged, two charging currents in PC stage are less and stable, and two charging currents in CC stage are maximum and stable, and two charging currents in CV stage gradually from large to small.The charging current in CC stage is the portative maximum current of charger, and PC, CV stage all do not reach high charge current, and its charge efficiency is lower.Simultaneously, after PC, CC, the CV stage of first charging current all finish, charging interval of first battery finishes, and second charging current just begins PC, CC, CV stage charges to second battery, and then two batteries charging interval of finishing a charge cycle is longer.If the CV stage of first charging current and the PC stage of second charging current rationally can be superposeed, then can improve charge efficiency, and can also reduce the charging interval.
For this reason, the present invention proposes a kind of method one preferred embodiment charging current schematic diagram that improves the double-battery charge electrical efficiency, please consult Fig. 3 and Fig. 4 simultaneously, Fig. 3 improves the method flow diagram of double-battery charge electrical efficiency for the present invention, Fig. 4 improves the method one preferred embodiment charging current schematic diagram of double-battery charge electrical efficiency for the present invention, and the method for described raising double-battery charge electrical efficiency comprises:
S10, open first charging module to first battery charge, and judge the residing charging stage of first battery;
S20, be CV during the stage when judging that first battery is in, open second charging module, simultaneously the first charging current remaining sum is distributed to second battery, win battery and second battery are charged simultaneously.
What the present invention relates to is the portable terminal with double cell, needs clear and definite elder generation to which battery charge, and described step S10 specifically comprises:
Step 101, detect the electric weight of first battery and second battery in real time, judge that whether the electric weight of first battery is less than predetermined voltage threshold;
Step 102, when the electric weight of first battery during less than predetermined voltage threshold, open first charging module to first battery charge, keep the closed condition of second charging module;
Step 103, detect the size of first charging current in real time, judge that when first charging current begins to descend first battery enters the CV stage.
The electric weight of battery can be to battery charge during less than predetermined voltage threshold, and described predetermined voltage threshold is according to user's actual requirement setting, can guarantee the user to standby for up to requirement.In step 101, all less than predetermined voltage threshold, then first battery preferentially charges as if the electric weight of judging first battery and second battery; If have only a battery less than predetermined voltage threshold, this battery charge then.Present embodiment is that the electric weight with first battery and second battery is that example is set forth less than predetermined voltage threshold all.
Second battery can not charge during first battery charge.Only enter CV during the stage at first battery, just simultaneously to second battery charge.Utilize the first charging current remaining sum during especially, to second battery charge.
The output current of general charger, be that total current is monopolized by a charging circuit.The output current of supposing charger is 1000mA, can descend gradually in the CV stage through first charging current of exporting after the first charging module adjustment, when for example dropping to 900mA, be equivalent to have the balance of current of 100mA, when first charging current continues to drop to 400mA, the balance of current of 600mA is arranged; Along with the prolongation balance of current in charging interval is increasing, indicate as empty camber line among Fig. 5.These balance of current are the first charging current remaining sum.The first charging current remaining sum is distributed to second battery charge, just be equivalent to the CV stage of first battery and the PC stage of second battery are superposeed, so both can take full advantage of total current, improve charge efficiency, can also save the charging interval.
In order to distribute the charging current remaining sum, before described step S10, also comprise: the size of electric current stepping is set, calculates each spaced points electric current according to total current and electric current step value; The absolute value of difference is the value of electric current stepping between every adjacent two spaced points electric currents.If the electric current stepping is 100mA, then the spaced points electric current is 900mA, 800mA, 700mA, 600mA ... end until charging current, correspondingly, the charging current remaining sum that can provide for second battery is 100mA, 200mA, 300mA, 400mA ... until maximum charging current 1000mA.Described electric current stepping can also be 50mA, 200mA.
After setting the charging current remaining sum, can begin second battery charge.Described step S20 specifically comprises:
Step 201, unlatching second charging module are to second battery charge;
Step 202, judge whether current first charging current equals one of them described spaced points electric current:
Step 203, when first charging current equals one of them described spaced points electric current, the size of adjusting second charging current makes it equal the first charging current remaining sum, namely total current deducts current spaced points electric current.
Because first charging current is the process that descends continuously in the CV stage, present embodiment only need be monitored each spaced points electric current, when first charging current drops to a spaced points electric current, just changes the size of second charging current.For example, first charging current drops to first spaced points electric current of 900mA() time, adjust second charging current and make it equal total current (1000mA) to deduct current spaced points electric current (900 A), be 100mA.When first charging current continues to drop to 800mA (second spaced points electric current), adjust second charging current and be 200mA(1000mA-800mA).Drop to 800mA from 900mA in this time period in first charging current, second charging current remains 100mA, therefore, and first charging current+second charging current≤total current.As can be seen, if the numerical value of electric current stepping is more little, first charging current and second charging current with more near total current, namely the utilization ratio of total current is more high.
Should be understood that, when first charging current by, after namely the CV stage of first battery finishes, will close first charging module and stop first battery charge.Second battery will shorten the time in its CC stage, as shown in Figure 5 behind overcharge current remaining sum preliminary filling.After second battery was full of electricity, then need judge whether need be to first battery charge.Further, the method for described raising double-battery charge electrical efficiency also comprises:
If the user uses portable terminal while charging, after then second battery was full of electricity, the electric weight of possibility first battery can be consumed, and less than predetermined voltage threshold, this moment can be alternately to first battery charge, and its charging modes is identical with step 201 ~ step 203.
Based on the method for charging batteries of the above-mentioned portable terminal with double cell and the method that improves the double-battery charge electrical efficiency, the embodiment of the invention also provides a kind of portable terminal for the method that realizes above-mentioned method for charging batteries and raising double-battery charge electrical efficiency.
See also Fig. 5, it improves the structured flowchart of the portable terminal of double-battery charge electrical efficiency for the present invention, and described portable terminal comprises: charging inlet 50, first battery 10, second battery 20, first charging module 30, second charging module 40, current limliting module 90 and controller 60.Wherein, first battery 10 is connected second battery 20 and controller 60 with 20 parallel connections of second battery and first battery 10 by current limliting module 90, is used for controller 60 power supplies.The spontaneous transfer of electric current that described current limliting module 90 is used between restriction first battery 10 and second battery 20 is guaranteed in the unidirectional inflow controller 60 of supply current.Described first charging module 30 connects charging inlet 50 and first battery 10 of portable terminal, be used on the one hand stably exporting first charging current to 10 chargings of first battery after the current processing with the charger input, be used for adjusting according to the control command of controller 60 outputs the size of this first charging current on the other hand.Described second charging module 40 connects charging inlet 50 and second battery 20 of portable terminal, is used on the one hand giving second battery 20 chargings stable output second charging current after the current processing of charger input; Be used for adjusting according to the control command of controller output the size of this second charging current on the other hand.It will be appreciated that the current output terminal of charging inlet 50 connects first charging module 30 and second charging module 40 respectively.The size of second charging current of the size of first charging current when giving separately 10 chargings of first battery when charging for separately second battery 20 equates.Described controller 60 connects charging inlet 50, first battery 10, second battery 20, first charging module 30 and second charging module 40, be used for starting the double cell detecting pattern according to the interrupt signal that produces, obtain the state parameter of first battery 10 and second battery 20; Judge the insertion state of charger, the situation in place of first battery 10, second battery 20, and the keying state of first charging module, second charging module, start corresponding charge mode according to judged result, export corresponding control command first charging module 30 and second charging module 40 are controlled accordingly.
Described controller 60 is the control core of portable terminal, please consults Fig. 2 simultaneously, and it comprises first timer 601, detecting unit 602, judging unit 603, switch element 604 and control unit 605.First timer 601 is used for arranging first Preset Time and the timing that circulates, and starts timing when controller 60 is in running order automatically; It is connected with control unit 605, makes control unit 605 produce interrupt signal when first Preset Time arrives and starts the double cell detecting pattern, controls the charging modes of first battery 10 and second battery 20.Detecting unit 602 is used for obtaining the state parameter of first battery 10 and second battery 20; Described state parameter comprises the current electric weight of first battery 10 and second battery 20, battery temperature, magnitude of voltage etc., these state parameters is imported the foundation that relevant control is provided in the connected control unit 605, to whole charging process and power supply process.Judging unit 603 is used for judging whether charger inserts portable terminal, the keying state of the situation in place of first battery 10, second battery 20 and first charging module 30, second charging module 40; Judged result is imported in the connected control unit 605, made control unit 605 after starting the double cell detecting pattern, according to insertion state startup battery charging mode according to user or the battery powered mode of charger; Situation in place according to first battery 10 and second battery 20 under battery charging mode according to user starts corresponding charge mode; Keying state according to first charging module 30, second charging module 40 under battery powered mode is controlled accordingly to first charging module 30, second charging module 40.Described situation in place refers to namely whether battery inserts portable terminal.Should be understood that control unit can produce interrupt signal in the moment that moment that charger inserts or extracts or battery inserted or extracted portable terminal and start the double cell detecting pattern, is the mode that a kind of moment detects and generate signal.And judging unit 603 mainly is to judge that charger inserts state or extracts state, and the insertion state of first battery 10 and second battery 20 or extract state is the process of a kind of lasting detection and judgement.Except comprising each above-mentioned unit, also comprise devices such as control chip, central processing element, electric capacity, resistance in the controller 60, it is prior art, and the present invention is not described further this.
Its inner most of module break-off when being in holding state based on portable terminal can break-off when the holding state as controller 60.For also can monitoring battery charge condition and electric power thus supplied at holding state, described portable terminal also comprises second timer 70 and wake module 80.Second timer 70 is used for second Preset Time and the timing that circulates are set, and it is closed when portable terminal is worked, and is started under portable terminal is in holding state by wake module 80.Wake module 80 connects second timer 70 and controller 60, produces interrupt signal control controller 60 and enter operating state when second Preset Time arrives, and starts the double cell detecting pattern.
It will be appreciated that described portable terminal is when realizing improving the double-battery charge electrical efficiency, described controller 60 is used for the keying of control first charging module and second charging module and judges the charged state that first battery is current; When first battery is in CV during the stage, open second charging module, simultaneously the first charging current remaining sum is distributed to second battery, win battery and second battery are charged simultaneously.Wherein, described control unit 605 connects detecting unit 602 and judging unit 603.Detecting unit 602 detects first battery 10, the electric weight of second battery 20 and the size of first charging current in real time.Whether judging unit 603 judges the electric weight of first battery less than predetermined voltage threshold, judges that first battery 10 enters the CV stage when full and first charging current begins to descend when the electric weight of first battery 10.The electric weight that switch element 604 is judged first battery 10 at judging unit 603 is opened 30 pairs of first batteries 10 of first charging module and is charged during less than predetermined voltage threshold, keeps the closed condition of second charging module 40.
Described controller 60 also comprise be connected with judging unit 603 unit 606 is set, described the size that unit 606 is used for arranging the electric current stepping is set, calculate each spaced points electric current according to total current and electric current step value; The absolute value of difference is the value of electric current stepping between every adjacent two spaced points electric currents.
Described judging unit 603 also is used for judging whether current first charging current equals one of them described spaced points electric current.Judge that at judging unit 603 first battery 10 enters CV during the stage, described switch element 604 is opened 20 chargings of 40 pairs of second batteries of second charging module.When judging unit 603 judged that first charging current equals the spaced points electric current, the size that the conducting state that switch element 604 is adjusted second charging module 40 is controlled second charging current made it equal the first charging current remaining sum, is that total current deducts current spaced points electric current.
Described judging unit 603 also be used for to be judged the charged state that second battery 20 is current.Judge that at judging unit 603 charged state of second battery 20 enters the CV stage, and the electric weight of first battery 10 is during less than predetermined voltage threshold, the first charging current remaining sum is distributed to first battery, described switch element 604 opens first charging module, 30, the first batteries and second battery charges simultaneously.
In sum, the present invention is provided with the stand-by time that first battery and second battery have prolonged portable terminal in portable terminal; Start the double cell detecting pattern according to the interrupt signal that produces, obtain the state parameter of first battery and second battery, when inserting, charger starts battery charging mode according to user, judge the situation in place of first battery, second battery:, respectively it is charged if first battery and second battery are all in place; If first battery is in place and second battery is not in place, only to first battery charge; If first battery is not in place and second battery is in place, only to second battery charge; If first battery and second battery are not in place, then close first charging module and second charging module, there is not battery in the prompting customer mobile terminal.When not inserting, charger starts battery powered mode, judge the keying state of first charging module, second charging module, if open then close corresponding charging module, battery is normally powered to portable terminal, can take different charge modes according to different situations, strengthen the controllable property to the double cell charging.
In addition, the present invention proposes that also first charging circuit is distributed to second battery in the first charging current remaining sum in CV stage and charges, and both can take full advantage of total current, improve charge efficiency, can also save the charging interval, optimize the charging method of double cell, increase user's Experience Degree.
Be understandable that, for those of ordinary skills, can be equal to replacement or change according to technical scheme of the present invention and inventive concept thereof, and all these changes or replacement all should belong to the protection range of the appended claim of the present invention.
Claims (10)
1. a method that improves the double-battery charge electrical efficiency is characterized in that, comprising:
A, open first charging module to first battery charge, and judge the residing charging stage of first battery;
B, be CV during the stage when judging that first battery is in, open second charging module, simultaneously the first charging current remaining sum is distributed to second battery, win battery and second battery are charged simultaneously.
2. the method for raising double-battery charge electrical efficiency according to claim 1 is characterized in that, described steps A specifically comprises:
A1, detect the electric weight of first battery and second battery in real time, judge that whether the electric weight of first battery is less than predetermined voltage threshold;
A2, when the electric weight of first battery during less than predetermined voltage threshold, open first charging module to first battery charge, and keep the closed condition of second charging module;
A3, detect the size of first charging current in real time, judge that when first charging current begins to descend first battery enters the CV stage.
3. the method for raising double-battery charge electrical efficiency according to claim 1 is characterized in that, also comprises before described steps A: the size of electric current stepping is set, calculates each spaced points electric current according to total charging current and electric current step value; The absolute value of difference is the value of electric current stepping between every adjacent two spaced points electric currents.
4. the method for raising double-battery charge electrical efficiency according to claim 3 is characterized in that, described step B specifically comprises:
B1, unlatching second charging module are to second battery charge;
B2, judge whether current first charging current equals one of them described spaced points electric current:
B3, when first charging current equals one of them described spaced points electric current, the size of adjusting second charging current makes it equal the first charging current remaining sum, namely total charging current deducts current spaced points electric current.
5. the method for raising double-battery charge electrical efficiency according to claim 1 is characterized in that, also comprises after described step B:
C, detect the current charged state of second battery, and whether the electric weight of judging first battery is less than predetermined voltage threshold;
D, the electric weight during less than predetermined voltage threshold that enters CV stage and first battery when the charged state of judging second battery are distributed to first battery with the first charging current remaining sum, and win battery and second battery are charged simultaneously.
6. a portable terminal that is used for the method for the described raising double-battery charge of realization claim 1 electrical efficiency is characterized in that, comprising: first battery, second battery, first charging module, second charging module and controller;
Described first charging module is used for generating first charging current and gives first battery charge;
Described second charging module is used for generating second charging current and gives second battery charge;
Described controller is used for the keying of control first charging module and second charging module and judges the charged state that first battery is current; When judging that first battery is in CV during the stage, open second charging module, the first charging current remaining sum is distributed to second battery, win battery and second battery are charged simultaneously;
Described first battery connects first charging module, and second battery connects second charging module, and described controller connects first battery, second battery, first charging module and second charging module.
7. portable terminal according to claim 6 is characterized in that, described controller comprises: detecting unit is used for detecting in real time first battery, the electric weight of second battery and the size of first charging current;
Judging unit, the electric weight that is used for judging first battery judge that whether less than the predeterminated voltage threshold values and judge whether described first battery enters the CV stage first battery enters the CV stage when first charging current begins to descend;
Switch element when being used for electric weight at judgment unit judges first battery less than predetermined voltage threshold, being opened first charging module first battery is charged, and keeps the closed condition of second charging module;
Described control unit connects detecting unit and judging unit.
8. portable terminal according to claim 7 is characterized in that, described controller also comprises the unit is set, and is used for arranging the size of electric current stepping, calculates each spaced points electric current according to total charging current and electric current step value; The absolute value of difference is the value of electric current stepping between every adjacent two spaced points electric currents;
The described unit that arranges connects described judging unit.
9. portable terminal according to claim 8 is characterized in that,
Described judging unit also is used for judging whether current first charging current equals one of them described spaced points electric current;
Described switch element also is used for entering CV during the stage at judgment unit judges first battery, opens second charging module to second battery charge; And when judgment unit judges first charging current equaled one of them spaced points electric current, the size of adjusting second charging current made it equal the first charging current remaining sum, is that total charging current deducts current spaced points electric current.
10. portable terminal according to claim 7 is characterized in that,
Described judging unit is also for detection of the current charged state of second battery, and whether the electric weight of judging first battery is less than predetermined voltage threshold;
Described switch element also is used for entering the CV stage in the charged state of judgment unit judges second battery, and the electric weight of first battery is during less than predetermined voltage threshold, the first charging current remaining sum is distributed to first battery, win battery and second battery are charged simultaneously.
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