CN104993534A - Mobile terminal and charge control method thereof - Google Patents
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- CN104993534A CN104993534A CN201510380497.9A CN201510380497A CN104993534A CN 104993534 A CN104993534 A CN 104993534A CN 201510380497 A CN201510380497 A CN 201510380497A CN 104993534 A CN104993534 A CN 104993534A
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Abstract
The invention discloses a mobile terminal and a charge control method thereof. The charge control method comprises the following steps: A, when it is detected that the mobile terminal is connected with a charging device, obtaining the maximum charge currents of the charging device; B, starting charging, and determining whether the charge and discharge switching frequency of a battery within a first fixed timed period is greater than first preset frequency: in case of yes, executing step C, and otherwise repeating step B; C, stopping charging, and determining whether the frequency that the discharge current of the battery is greater than the maximum charge currents is greater than second preset frequency: in case of yes, repeating step C, and other wise, executing step D; and D, determining whether the battery is fully charged: in case of yes, ending charging, and otherwise, returning to the step B, such that frequent charge and discharge switching can be reduced, the battery is well protected, and the service life of the battery is also prolonged.
Description
Technical field
The present invention relates to mobile charging technical field, in particular a kind of mobile terminal and charge control method thereof.
Background technology
At present, mobile terminal all uses chargeable battery to power, and mobile terminal also supports the function of charging whenever and wherever possible.As shown in Figure 1, after mobile terminal connects charging device (common charging device is as charger baby, charger, computer etc.), the charging current Ichg of charging device input mobile terminal is divided into two-way: a road is terminal current Isys, for powering for mobile terminal, mobile terminal can normally be used; Another road is battery charge Ibat, for being battery charging; And the former preferential and the latter.
After mobile terminal connects charging device, above-mentioned three kinds of electric currents there will be following three kinds of situations:
When mobile terminal power consumption higher (as user carries out playing games or video calling etc.), | Isys| is greater than | and Ichg|, the charging current Ichg that charging device exports is not enough to provide mobile terminal power consumption (namely can not meet the size requirements of Isys).Now can not charge to battery, battery can be powered to mobile terminal by output current on the contrary.
When | Isys| equals | and during Ichg|, the charging current Ichg that charging device exports just in time is used to provide mobile terminal power consumption (Isys) completely.Electric current had not now both been had to input battery charging, do not have electric current to export (be equivalent to | Ibat| is zero) from battery yet.
When | Isys| is less than | and during Ichg|, the charging current Ichg that charging device exports is used to provide mobile terminal power consumption (Isys) and still has a surplus, and remaining part is used for charging (Ibat) to battery.
Wherein, | Ichg| represent charging current Ichg absolute value, | Isys| represent terminal current Isys absolute value, | bat| represents the absolute value of battery charge Ibat.
It can thus be appreciated that; after user connects charging device; along with the change of mobile terminal power consumption; terminal current Isys usually can be greater than or less than charging current Ichg, this can cause battery be in for a moment charged state (when | during Isys|<|Ichg|), be for a moment in discharge condition (when | during Isys|>|Ichg|).Particularly when connected charging device power supply capacity is more weak (as computer).Further, present mobile terminal is all large high-definition screens, and very common use can make | Isys|>|Ichg|, thus be also easy to occur that battery is in charged state for a moment, is in the situation of discharge condition for a moment.
For battery, preferably charged state can be in a period of time or a period of time is in discharge condition.Charging in short time, electric discharge switching require that inside battery circuit correspondence switches charge and discharge, and battery continually discharge and recharge switching can make its life-span greatly shorten.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
The technical problem to be solved in the present invention is, for the above-mentioned defect of prior art, provides a kind of mobile terminal and charge control method thereof, is intended to battery can be made to carry out the problem of discharge and recharge switching continually when solving the charging of existing mobile terminal.
The technical scheme that technical solution problem of the present invention adopts is as follows:
A charge control method for mobile terminal, it comprises:
A, when detecting that mobile terminal is connected with charging device, obtain the maximum charging current of this charging device;
B; Start charging, judge whether the number of times that the first timing is interior, battery carries out discharge and recharge switching is greater than the first preset times: be perform step C; Otherwise repeat step B;
C, stopping charging, judge whether the number of times that the second timing is interior, the discharging current of battery is greater than maximum charging current is greater than the second preset times: be repeat step C; Otherwise perform step D;
D, judge whether battery is full of electricity: be then complete charge, otherwise return step B.
In the charge control method of described mobile terminal, in described steps A, when the Vchg pin of the interface of detection mobile terminal produces rising edge interrupt signal, mobile terminal is connected with charging device; When the described Vchg pin of detection produces trailing edge interrupt signal, the connection of mobile terminal and charging device disconnects.
In the charge control method of described mobile terminal, described step B specifically comprises:
B1, startup charging, reset the first count value, close second timer, reset and start first timer;
B2, judging that whether battery switches to electric discharge by charging or switch to charging by electric discharge, is that the first count value is added 1;
B3, when the first timing reaches, judge whether the first count value is greater than the first preset times: be perform step C; Otherwise perform step B1.
In the charge control method of described mobile terminal, described step C specifically comprises:
C1, stopping charging, reset the second count value, close first timer, reset and start second timer;
C2, judge whether the discharging current of battery is greater than maximum charging current, is, the second count value is added 1;
C3, when the second timing reaches, judge whether the second count value is greater than the second preset times: be perform step C1; Otherwise perform step D.
A kind of mobile terminal, it comprises detection module, the first control module, the second control module and judge module;
When described detection module detection mobile terminal is connected with charging device, obtains the maximum charging current of this charging device and start the first control module; First control module starts charging, judges whether the number of times that the first timing is interior, battery carries out discharge and recharge switching is greater than the first preset times, is start the second control module, otherwise continues charge and judge; Second control module, for stopping charging, judges whether the number of times that the second timing is interior, the discharging current of battery is greater than maximum charging current is greater than the second preset times: be, continues to stop charging and judging; Otherwise startup judge module; Described judge module judges whether battery is full of electricity: be then complete charge, otherwise starts the first control module.
In described mobile terminal, described first control module comprises:
First timer, for arranging the first timing;
First counter, for being recorded in the first timing, battery switches to electric discharge by charging or is switched to the first count value of charging by electric discharge;
First processing unit, for starting charging, by the first counter O reset, closing second timer, resets and start first timer device;
Discharge and recharge detecting unit, for judging that whether battery switches to electric discharge by charging or switch to charging by electric discharge, is that the first count value is added 1;
First comparing unit, for when the first timing reaches, judges whether the first count value is greater than the first preset times: be, starts the second control module, otherwise starts the first processing unit.
In described mobile terminal, described second control module comprises:
Second timer, for arranging the second timing;
Second counter, for being recorded in the second timing, the discharging current of battery is greater than the second count value of maximum charging current;
Second processing unit, for stopping charging, by the second counter O reset, closing first timer, resets and start second timer device;
Current detecting unit, for judging whether the discharging current of battery is greater than maximum charging current, is, the second count value is added 1;
Second comparing unit, when the second timing reaches, judges whether the second count value is greater than the second preset times: be, starts the second processing unit; Otherwise startup judge module.
In described mobile terminal, described first timing is 5 seconds, and described first preset times is 2 times.
In described mobile terminal, described second timing is 5 seconds, and described second preset times is 0 time.
Compared to prior art, mobile terminal provided by the invention and charge control method thereof, described charge control method comprises: A, when detecting that mobile terminal is connected with charging device, obtain the maximum charging current of this charging device; B; Start charging, judge whether the number of times that the first timing is interior, battery carries out discharge and recharge switching is greater than the first preset times: be perform step C; Otherwise repeat step B; C, stopping charging, judge whether the number of times that the second timing is interior, the discharging current of battery is greater than maximum charging current is greater than the second preset times: be repeat step C; Otherwise perform step D; D, judge whether battery is full of electricity: be then complete charge, otherwise return step B; Discharge and recharge can be reduced so frequently switch, battery be played a very good protection, also extends the useful life of battery.
Accompanying drawing explanation
Fig. 1 is the current diagram of existing mobile terminal charging.
Fig. 2 is the charge control method flow chart of mobile terminal provided by the invention.
Fig. 3 is the structured flowchart of mobile terminal Application Example provided by the invention.
Embodiment
The invention provides a kind of mobile terminal and charge control method thereof, detect battery and carry out continually stopping charging when discharge and recharge switches, charging, discharging electric batteries can be greatly reduced and switch, thus the useful life of battery is extended.For making object of the present invention, technical scheme and advantage clearly, clearly, developing simultaneously referring to accompanying drawing, the present invention is described in more detail for embodiment.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Refer to Fig. 2, the charge control method of mobile terminal provided by the invention comprises:
S100, when detecting that mobile terminal is connected with charging device, obtain the maximum charging current of this charging device.
S200, startup charging, judge whether the number of times that the first timing is interior, battery carries out discharge and recharge switching is greater than the first preset times: be perform step S300; Otherwise repeat step S200.
S300, stopping charging, judge whether the number of times that the second timing is interior, the discharging current of battery is greater than maximum charging current is greater than the second preset times: be repeat step S300; Otherwise perform step S400.
S400, judge whether battery is full of electricity: be then complete charge, otherwise return step S200.
In described step S100, whether the interface detecting mobile terminal inserts charging device, mainly detect the waveform of the edge interrupt signal on the Vchg pin of this interface, when the described Vchg pin of detection produces rising edge interrupt signal, illustrate that mobile terminal is connected with charging device; When the described Vchg pin of detection produces trailing edge interrupt signal, illustrate that the connection of mobile terminal and charging device disconnects.
When detecting mobile terminal and being connected with charging device, mobile terminal first need obtain the maximum charging current IsysMax of charging device, so that follow-up comparison.The value of maximum charging current IsysMax is relevant with the type of charging device, and charging device is provided with charging restriction, namely can not exceed maximum charging current IsysMax.The acquisition methods of maximum charging current IsysMax is prior art, is not described further this herein.
Described step S200 specifically comprises:
Step 201, startup charging, reset the first count value, close second timer, reset and start first timer.
See also Fig. 1, in the present embodiment, be provided with first timer to arrange the first timing in mobile terminal, preferably, the first timing t1 is 5 seconds.First counter carries out the first counting.Namely start charging is that charging device exports charging current Ichg.First count value is reset namely to the first counter O reset, makes the first count value k1=0.Reset and start after namely first timer resets first timer and start timing.Carry out detection to judge whether carrying out discharge and recharge switching to battery charge Ibat afterwards.
Step 202, judging that whether battery switches to electric discharge by charging or switch to charging by electric discharge, is that the first count value is added 1.
In the present embodiment, for battery by charging switch to electric discharge or by electric discharge switch to charging realize by detecting battery charge Ibat.If battery charge Ibat is charging when being greater than zero, be electric discharge when battery charge Ibat is less than zero.Battery can be detected according to the change of battery charge Ibat and whether carry out discharge and recharge switching, have, the first count value k1 is added 1, i.e. k1=k1+1.
Step 203, when the first timing reaches, judge whether the first count value is greater than the first preset times: be perform step S300; Otherwise perform step 201.
In this enforcement, the first preset times kth1 is 2.In charging process, if the number of times that battery carries out discharge and recharge switching in the first timing, namely 5 second is less than or equal to 2 times, then switches infrequently, can step 201 be returned, continue charge and judge whether discharge and recharge frequently switches.If more than 2 times in 5 seconds, then illustrate that discharge and recharge switches frequent, step S300 need be performed and stop charging.
In the present embodiment, after described step S300 stops charging, need judge that whether battery is in electric discharge, be can not charge to battery, not so battery can carry out discharge and recharge switching again.Only have and could not continue to charge to battery when battery discharges.Then described step S300 specifically comprises:
Step 301, stopping charging, reset the second count value, close first timer, reset and start second timer.
In the present embodiment, be provided with second timer in mobile terminal to start the second timing, preferably, the second timing t2 is 5 seconds.Second counter carries out the second counting.Charging is stopped namely to be that charging device exports stopping output charging current Ichg.Second count value is reset namely to the second counter O reset, makes the second count value k2=0.Reset and start after namely second timer resets second timer and start timing.Afterwards the discharging current of battery is detected.
Step 302, judge whether the discharging current of battery is greater than maximum charging current, is, the second count value is added 1.
If whether discharging current is greater than maximum charging current IsysMax, illustrate that battery needs to power to mobile terminal, the size of discharging current is relevant with the power consumption of mobile terminal and in change.Suppose now to continue charging, also can not to powered battery, battery can carry out discharge and recharge switching.Therefore, when judging that discharging current is greater than maximum charging current IsysMax, the second count value k2 is added 1, i.e. k2=k2+1.
Step 303, when the second timing reaches, judge whether the second count value is greater than the second preset times: be perform step 301; Otherwise perform step S400.
In this enforcement, the second preset times kth2 is 0.Only in 5 seconds, the discharging current of battery is less than or equal to maximum charging current IsysMax, namely | and Ibat|(supposes that battery charge is equal with discharging current, all represents with Ibat) be less than or equal to | IsysMax| just can reopen charging; If now open the phenomenon that charging just can be guaranteed to there will not be battery charging and discharging to switch.If be greater than, need to continue to stop charging and judging size.
Before needing to reopen charging, need judge whether battery is full of electricity, be full of and then point out electricity full, complete charge.Underfill then returns step S200 and again starts charging, continues to judge whether carried out discharge and recharge switching continually in 5 seconds.
Discharge and recharge can be reduced by the way frequently switch, battery be played a very good protection, also extends the useful life of battery.
Based on above-mentioned charge control method, the present invention also provides a kind of mobile terminal, refers to Fig. 3, and described mobile terminal comprises detection module 10, first control module 20, second control module 30 and judge module 40.
Described detection module 10 detects the connection status of mobile terminal and charging device.When detecting that mobile terminal is connected with charging device, described detection module 10 obtains the maximum charging current of this charging device and starts the first control module 20.Start charging when first control module 20 starts, judge whether the number of times that the first timing is interior, battery carries out discharge and recharge switching is greater than the first preset times, is start the second control module 30, otherwise continue charge and judge.Stop charging when second control module 30 starts, judge whether the number of times that the second timing is interior, the discharging current of battery is greater than maximum charging current is greater than the second preset times: be, continue to stop charging and judging; Otherwise start judge module 40.When described judge module 40 starts, judge whether battery is full of electricity: be then complete charge, otherwise start the first control module 20.Specifically refer to above-described embodiment.
In the present embodiment, the energization pins of charging device exports 5V voltage, and when the Vchg pin of mobile terminal is connected with charging device, Vchg is upper will produce a rising edge; And when the Vchg pin of mobile terminal and the connection of charging device disconnect, Vchg is upper will produce a trailing edge; Therefore, described detection module 10 only by detecting the waveform of the edge interrupt signal on Vchg pin, need be specially: when detection module 10 detect Vchg pin produces rising edge interrupt signal time, judge that mobile terminal is connected with charging device; When detection Vchg pin produces trailing edge interrupt signal, judge that the connection of mobile terminal and charging device disconnects.
Described first control module 20 comprises:
First timer 210, for arranging the first timing, preferably, the first timing is 5 seconds;
First counter 220, for being recorded in the first timing, battery switches to electric discharge by charging or is switched to the first count value of charging by electric discharge;
First processing unit 230, for starting charging, resets the first counter 220, closes second timer, resets and start first timer 210;
Discharge and recharge detecting unit 240, for judging that whether battery switches to electric discharge by charging or switch to charging by electric discharge, is that the first count value is added 1;
First comparing unit 250, for when the first timing reaches, judges whether the first count value is greater than the first preset times: be, starts the second control module 30, otherwise starts the first processing unit 230.
In the present embodiment, discharge and recharge detecting unit 240 is by detecting the judgement of the switching state realized to battery charge Ibat.Not too convenient owing to directly surveying battery charge Ibat.In the specific implementation, voltage is become to compare judgement current conversion.Then described mobile terminal also comprises resistance R0, and one end of described resistance R0 connects positive pole+and the discharge and recharge detecting unit 240 of battery, and the other end of resistance R0 connects discharge and recharge detecting unit 240.
The resistance of described resistance R0 is fixed, if the voltage at resistance R0 two ends is V1, V2;
Illustrate that when V1 is greater than V2 electric current flows into battery, now battery charges, and is equivalent to battery charge Ibat and is greater than zero.Illustrate that when V1 is less than V2 electric current flows out from battery, now battery discharges, and is equivalent to battery charge Ibat and is less than zero.Therefore, be provided with a comparator in discharge and recharge detecting unit 230, V1, V2 accessed in this comparator, when V1 is greater than V2, comparator exports high level, the comparator output low level when V1 is less than V2.When detecting that comparator exports rising edge interrupt signal and then illustrates that battery switches to charging by electric discharge, when detecting that comparator exports trailing edge interrupt signal and then illustrates that battery switches to electric discharge by charging.
Described second control module 30 comprises:
Second timer 310, for arranging the second timing, preferably, the second timing is 5 seconds;
Second counter 320, for being recorded in the second timing, the discharging current of battery is greater than the second count value of maximum charging current;
Second processing unit 330, for stopping charging, resets the second counter 320, closes first timer, resets and start second timer 310;
Current detecting unit 340, for judging whether the discharging current of battery is greater than maximum charging current, is, the second count value is added 1;
Second comparing unit 350, when the second timing reaches, judges whether the second count value is greater than the second preset times: be, starts the second processing unit 330; Otherwise start judge module 40.
In the present embodiment, described current detecting unit 340 judges whether the discharging current of battery is greater than maximum charging current.Directly compare based on electric current inconvenience, convert voltage compare to during concrete enforcement, be specially: one end of resistance R0 connects positive pole+and the current detecting unit 340 of battery, and the other end of resistance R0 connects current detecting unit 340.The difference of the voltage of V1 and V2 and Vth are compared by the comparator that current detecting unit 340 is built-in, when V1 is greater than V2, comparator exports high level, the comparator output low level when V1 is less than V2; Therefore, illustrate that the discharging current of battery crosses the maximum of charging current when detecting that comparator produces rising edge; Wherein, Vth is | IsysMax|*R0.
In sum, whether the present invention is greater than the first preset times by the number of times that mobile terminal judges in the first timing, battery carries out discharge and recharge switching; Be greater than and then illustrate that battery charging and discharging switches frequently, charging need be stopped; Continue after stopping charging judging whether the number of times that the second timing is interior, the discharging current of battery is greater than maximum charging current is greater than the second preset times; Illustrate that battery still there will be the phenomenon of discharge and recharge switching; Only have and could recover charging when being less than the second preset times.Discharge and recharge can be reduced so frequently switch, battery be played a very good protection, also extends the useful life of battery.
Should be understood that, application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection range that all should belong to claims of the present invention.
Claims (9)
1. a charge control method for mobile terminal, is characterized in that, comprising:
A, when detecting that mobile terminal is connected with charging device, obtain the maximum charging current of this charging device;
B; Start charging, judge whether the number of times that the first timing is interior, battery carries out discharge and recharge switching is greater than the first preset times: be perform step C; Otherwise repeat step B;
C, stopping charging, judge whether the number of times that the second timing is interior, the discharging current of battery is greater than maximum charging current is greater than the second preset times: be repeat step C; Otherwise perform step D;
D, judge whether battery is full of electricity: be then complete charge, otherwise return step B.
2. the charge control method of mobile terminal according to claim 1, is characterized in that, in described steps A, when the Vchg pin of the interface of detection mobile terminal produces rising edge interrupt signal, mobile terminal is connected with charging device; When the described Vchg pin of detection produces trailing edge interrupt signal, the connection of mobile terminal and charging device disconnects.
3. the charge control method of mobile terminal according to claim 1, is characterized in that, described step B specifically comprises:
B1, startup charging, reset the first count value, close second timer, reset and start first timer;
B2, judging that whether battery switches to electric discharge by charging or switch to charging by electric discharge, is that the first count value is added 1;
B3, when the first timing reaches, judge whether the first count value is greater than the first preset times: be perform step C; Otherwise perform step B1.
4. the charge control method of mobile terminal according to claim 1, is characterized in that, described step C specifically comprises:
C1, stopping charging, reset the second count value, close first timer, reset and start second timer;
C2, judge whether the discharging current of battery is greater than maximum charging current, is, the second count value is added 1;
C3, when the second timing reaches, judge whether the second count value is greater than the second preset times: be perform step C1; Otherwise perform step D.
5. a mobile terminal, is characterized in that, comprises detection module, the first control module, the second control module and judge module;
When described detection module detection mobile terminal is connected with charging device, obtains the maximum charging current of this charging device and start the first control module; First control module starts charging, judges whether the number of times that the first timing is interior, battery carries out discharge and recharge switching is greater than the first preset times, is start the second control module, otherwise continues charge and judge; Second control module, for stopping charging, judges whether the number of times that the second timing is interior, the discharging current of battery is greater than maximum charging current is greater than the second preset times: be, continues to stop charging and judging; Otherwise startup judge module; Described judge module judges whether battery is full of electricity: be then complete charge, otherwise starts the first control module.
6. mobile terminal according to claim 5, is characterized in that, described first control module comprises:
First timer, for arranging the first timing;
First counter, for being recorded in the first timing, battery switches to electric discharge by charging or is switched to the first count value of charging by electric discharge;
First processing unit, for starting charging, by the first counter O reset, closing second timer, resets and start first timer device;
Discharge and recharge detecting unit, for judging that whether battery switches to electric discharge by charging or switch to charging by electric discharge, is that the first count value is added 1;
First comparing unit, for when the first timing reaches, judges whether the first count value is greater than the first preset times: be, starts the second control module, otherwise starts the first processing unit.
7. mobile terminal according to claim 5, is characterized in that, described second control module comprises:
Second timer, for arranging the second timing;
Second counter, for being recorded in the second timing, the discharging current of battery is greater than the second count value of maximum charging current;
Second processing unit, for stopping charging, by the second counter O reset, closing first timer, resets and start second timer device;
Current detecting unit, for judging whether the discharging current of battery is greater than maximum charging current, is, the second count value is added 1;
Second comparing unit, when the second timing reaches, judges whether the second count value is greater than the second preset times: be, starts the second processing unit; Otherwise startup judge module.
8. mobile terminal according to claim 6, is characterized in that, described first timing is 5 seconds, and described first preset times is 2 times.
9. mobile terminal according to claim 7, is characterized in that, described second timing is 5 seconds, and described second preset times is 0 time.
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| CN112887472A (en) * | 2021-01-25 | 2021-06-01 | 惠州Tcl移动通信有限公司 | Battery identification method, mobile terminal and computer readable storage medium |
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| CN113746168A (en) * | 2021-08-27 | 2021-12-03 | 江苏科曜能源科技有限公司 | Charging and discharging method, device, equipment and storage medium of lead-acid battery |
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