CN104917245A - Charging management circuit, mobile terminal and charging control method of mobile terminal - Google Patents

Charging management circuit, mobile terminal and charging control method of mobile terminal Download PDF

Info

Publication number
CN104917245A
CN104917245A CN201510347329.XA CN201510347329A CN104917245A CN 104917245 A CN104917245 A CN 104917245A CN 201510347329 A CN201510347329 A CN 201510347329A CN 104917245 A CN104917245 A CN 104917245A
Authority
CN
China
Prior art keywords
mobile terminal
battery
module
governor circuit
load
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201510347329.XA
Other languages
Chinese (zh)
Inventor
李新
王海瑞
王晨
牛乔万
倪漫利
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Tinno Wireless Technology Co Ltd
Original Assignee
Shenzhen Tinno Wireless Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen Tinno Wireless Technology Co Ltd filed Critical Shenzhen Tinno Wireless Technology Co Ltd
Priority to CN201510347329.XA priority Critical patent/CN104917245A/en
Publication of CN104917245A publication Critical patent/CN104917245A/en
Pending legal-status Critical Current

Links

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

The present invention provides a charging management circuit, a mobile terminal and a charging control method of the mobile terminal. The charging management circuit comprises an isolation module and an auxiliary charging module; the input end of the isolation module is connected to the output end of a main control circuit, and the output end of the isolation module is connected to a positive electrode of a battery of the mobile terminal; the isolation module is used for isolating the battery of the mobile terminal when the voltage of the battery of the mobile terminal is lower than the load booting voltage of the mobile terminal, preventing the main control circuit from charging the battery of the mobile terminal and enabling the main control circuit to only supply power for the load of the mobile terminal; the input end of the auxiliary charge module is connected to the input end of the main control circuit, and the output end of the auxiliary charging module is connected to a positive electrode of the battery of the mobile terminal; and after the isolation module isolates the battery of the mobile terminal, the auxiliary charging module is used for charging the battery of the mobile terminal. By adopting the technical scheme of the present embodiment, the problem that the load of the mobile terminal can not be started when the battery of the mobile terminal over discharges can be solved.

Description

The charge control method of charge management circuit, mobile terminal and mobile terminal
Technical field
The present invention relates to technical field of mobile terminals, particularly relate to the charge control method of a kind of charge management circuit, mobile terminal and mobile terminal.
Background technology
Along with the development of mobile communication and improving constantly of people's living standard, the use of portable type electronic product especially mobile terminal is more and more universal, and mobile terminal has become indispensable equipment in people's life.
Mobile terminal in use; often can run into battery capacity of mobile terminal to be finished and to cause mobile terminal to shut down; existing charging device can while charge the battery; while power to mobile terminal system; and when mobile terminal system operating current exceedes charging device supply electric current; powered to mobile terminal system by battery discharge, to provide users with the convenient.
But, when a battery is overdischarged, cell voltage is lower than the load starting resistor of mobile terminal, the output voltage inserting the governor circuit of charging device when charging device charges to mobile terminal can be dragged down by cell voltage, make the output voltage of charging device lower than the load starting resistor of mobile terminal, cause mobile terminal to start.
Summary of the invention
The invention provides the charge control method of a kind of charge management circuit, mobile terminal and mobile terminal, for solving battery at mobile terminal in the situation of overdischarge pond, the problem that the load of mobile terminal cannot start.
The invention provides a kind of charge management circuit, described charge management circuit comprises isolation module and auxiliary charging module; The input of described isolation module is connected with the output of governor circuit, and the output of described isolation module is connected with the positive pole of the battery of mobile terminal; Described isolation module, for when load starting resistor lower than described mobile terminal of the cell voltage of described mobile terminal, isolate the battery of described mobile terminal, stop the battery of described governor circuit to described mobile terminal to charge, make described governor circuit be only the load supplying of described mobile terminal; The input of described auxiliary charging module is connected with the input of described governor circuit, and the output of described auxiliary charging module is connected with the positive pole of the battery of described mobile terminal; Described auxiliary charging module, after isolating the battery of described mobile terminal at described isolation module, charges to the battery of described mobile terminal.
The present invention also provides a kind of mobile terminal, is provided with charge management circuit as above in the battery management unit in described mobile terminal.
The present invention also provides a kind of charge control method of mobile terminal, described method comprises: when load starting resistor lower than described mobile terminal of the cell voltage of mobile terminal, isolation module isolates the battery of described mobile terminal, stop the battery of described governor circuit to described mobile terminal to charge, make described governor circuit be only the load supplying of described mobile terminal; The input of described isolation module is connected with the output of described governor circuit, and the output of described isolation module is connected with the positive pole of the battery of described mobile terminal.Described auxiliary charging module is charged to the battery of described mobile terminal; The described input of auxiliary charging module is connected with the input of governor circuit, and the described output of auxiliary charging module is connected with the positive pole of the battery of mobile terminal.
The charge control method of charge management circuit of the present invention, mobile terminal and mobile terminal, by between the output that isolation module is arranged on the governor circuit of charger and the battery of mobile terminal, can when the load starting resistor of the cell voltage of mobile terminal lower than mobile terminal, the battery of mobile terminal and governor circuit are isolated, charger is stoped to charge to the battery of mobile terminal, the load supplying of governor circuit only to mobile terminal, makes the load of mobile terminal immediately start.Additionally by auxiliary charging module, make after the battery of isolation module isolation mobile terminal, auxiliary charging module is charged to the battery of mobile terminal.Adopt technical scheme of the present invention, the battery of mobile terminal can be solved in the situation of overdischarge pond, the problem that the load of mobile terminal cannot start immediately, thus achieve preferentially to the load supplying of mobile terminal when charger charges to mobile terminal, when mobile terminal overdischarge, as mobile terminal is discharged to shutdown, plug charger, also can ensure mobile terminal immediately start, not delay the use of user, thus effectively enhance the Experience Degree of user.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the charging circuit figure of traditional mobile terminal;
Fig. 2 is the principle schematic of an embodiment of charge management circuit of the present invention;
Fig. 3 is the principle schematic of another embodiment of charge management circuit of the present invention;
Fig. 4 is the embodiment flow chart of the charge control method of mobile terminal of the present invention.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Under normal circumstances, mobile terminal plugs charger when starting to charge, power supply can to mobile terminal load supplying while charging to the battery of mobile terminal, when the electric current of the load flowing through mobile terminal is greater than the governor circuit output current in charger, can determine that battery of mobile terminal is full of electricity, and start the load supplying for mobile terminal; Now can pull out charger, stop charging to the battery of mobile terminal.The battery of mobile terminal is to the load supplying of mobile terminal.
Fig. 1 is the charging circuit figure of traditional mobile terminal.As shown in Figure 1, this charging circuit figure comprises power supply 1, capacitor unit 2, governor circuit 3, the battery 4 of mobile terminal and mobile terminal load 5.Wherein capacitor unit 2 and governor circuit 3 can be arranged in charger, and input power 1 is the external power supply of charger, and during charging, charger one end connects power supply 1, and the other end connects mobile terminal.As shown in Figure 1, battery 4 and the mobile terminal load 5 of mobile terminal are connected in parallel, and are serially connected in afterwards in governor circuit 3 and input power 1 major loop.Capacitor unit 2 comprises capacitor C1, capacitor C2, capacitor C3, capacitor C4, and as shown in Figure 1, each capacitor is place in circuit in parallel respectively.Particularly, governor circuit 3 comprises K switch 1, K switch 2, K switch 3, diode D1, peripheral inductance L and sampling resistor Rsns.K switch 1 is in normally off, K switch 2 and K switch 3 are in normally open, when inserting charger, K switch 2 and K switch 3 close, whole charging circuit conducting, the output of governor circuit 3 is connected with the positive pole of the battery 4 of mobile terminal and the input of mobile terminal load 5 respectively, so governor circuit 3 is powered to mobile terminal load 5 while charging to the battery 4 of mobile terminal.When battery 4 overdischarge of mobile terminal, the cell voltage of mobile terminal is lower than the load cut-in voltage of mobile terminal, when inserting charger and charging to mobile terminal, the cell voltage that the output voltage of the governor circuit 3 of charger can be moved terminal drags down, make the output voltage of charger lower than the load starting resistor of mobile terminal, cause mobile terminal 5 to start.
In view of the above problems, on the basis of the charging circuit figure of traditional mobile terminal, the invention provides following technical scheme, with solving because mobile terminal is after overdischarge, cell voltage is lower than the load starting resistor of mobile terminal, when charging to mobile terminal, mobile terminal cannot starting problem.
Fig. 2 is the principle schematic of an embodiment of charge management circuit of the present invention.As shown in Figure 2, the charge management circuit of the present embodiment is on the basis of the charging circuit of the mobile terminal shown in Fig. 1, also comprises isolation module 6 and auxiliary charging module 7; The input of isolation module 6 is connected with the output of governor circuit 3, and wherein governor circuit 3 is the circuit in the charger that connects when mobile terminal charges.The output of isolation module 6 is connected with the positive pole of the battery 4 of mobile terminal; Compared with the charging circuit shown in Fig. 1, between the output that the isolation module 6 of the present embodiment is arranged on the governor circuit 3 of charger and the battery 4 of mobile terminal, charge to stop the battery 4 of charger to mobile terminal.As shown in Figure 2, simultaneously the output of governor circuit 3 is also connected with the input of the load 5 of mobile terminal, namely represents that the load 5 that the governor circuit 3 of charger continues as mobile terminal is charged.When after mobile terminal over-discharge, such as mobile terminal uses the state of automatic shutdown always, if now plug charger to mobile terminal, the cell voltage of mobile terminal is lower than the load start voltage of mobile terminal, now isolation module 6 isolates the battery 4 of mobile terminal, thus stop the battery 4 of described governor circuit 3 pairs of mobile terminals to charge, because the input of the output of governor circuit 3 with the load 5 of mobile terminal is connected, the load 5 making described governor circuit 3 be only mobile terminal is powered, and the load 5 of mobile terminal is normally started.
The input of auxiliary charging module 7 is connected with the input of governor circuit 3; What wherein the input of governor circuit 3 connected is power supply 1, and now namely represent that drawing an input from power supply 1 is directly connected with the input of auxiliary charging module 7, power supply is directly powered for auxiliary charging module 7.And the output of auxiliary charging module 7 is connected with the positive pole of the battery 4 of mobile terminal, the battery 4 that namely to represent by auxiliary charging module 7 be mobile terminal is powered.Compared with the charging circuit shown in Fig. 1, the auxiliary charging module 7 of the present embodiment is arranged between the battery 4 of power supply 1 and mobile terminal, after isolation module 6 isolates the battery 4 of mobile terminal, can directly be charged by the battery 4 of power supply 1 by auxiliary charging module 7 pairs of mobile terminals.Wherein the input of auxiliary charging module 7 can be connected with power supply 1 by the circuit introduced in charger.When mobile terminal uses the state of automatic shutdown always, after plugging charger to mobile terminal, auxiliary charging module 2 forms complete loop with the battery 4 of mobile terminal, make after isolation module 6 isolates the battery 4 of mobile terminal, the battery 4 of auxiliary charging module 7 pairs of mobile terminals charges.
The charge management circuit of the present embodiment, by between the output that isolation module 6 is arranged on the governor circuit 3 of charger and the battery 4 of mobile terminal, can when the load starting resistor of the cell voltage of mobile terminal lower than mobile terminal, the battery 4 of mobile terminal is isolated with governor circuit 3, the battery 4 of charger to mobile terminal is stoped to charge, governor circuit 3 is only powered to the load 5 of mobile terminal, and the load 5 of mobile terminal is normally started.Additionally by auxiliary charging module 2, make after isolation module 6 isolates the battery 4 of mobile terminal, the battery 4 of auxiliary charging module 2 pairs of mobile terminals charges.Adopt technical scheme of the present invention, battery 4 at mobile terminal can be solved in the situation of overdischarge pond, the problem that the load 5 of mobile terminal cannot start immediately, thus achieve when charger charges to mobile terminal and preferentially the load 5 of mobile terminal is powered, when mobile terminal overdischarge, as mobile terminal is discharged to shutdown, plug charger, also can ensure mobile terminal immediately start, not delay the use of user, thus effectively enhance the Experience Degree of user.
Alternatively, in the charge management circuit of above-described embodiment, due to auxiliary charging module 2 for little current source provides electric current, longer to battery 4 charging interval of mobile terminal, be therefore not suitable for charging with the battery 4 of auxiliary charging mould 2 pieces to mobile terminal always.When the cell voltage of mobile terminal equals the load starting resistor of mobile terminal, the battery 4 that the output voltage of governor circuit 3 can not be moved terminal drags down, and can ensure that the load 5 of mobile terminal be in opening while charging to the battery 4 of mobile terminal.When now auxiliary charging module 7 detects that the cell voltage of mobile terminal equals the load start voltage of mobile terminal, stop charging to the battery 4 of mobile terminal.And after auxiliary charging module 7 stops charging to the battery 4 of mobile terminal, isolation module 6 is closed and is isolated the battery 4 of mobile terminal, the positive pole of the battery 4 of mobile terminal is made to be connected to form loop with the input of the output of governor circuit 3 and the load 5 of mobile terminal respectively by isolation module 6, governor circuit 3 was both charged, again simultaneously for the load 5 of mobile terminal is powered to the battery 4 of mobile terminal.When the electric current of the load flowing through mobile terminal is greater than governor circuit 3 output current in charger, can determine that battery of mobile terminal 4 is full of electricity, and the load 5 started as mobile terminal is powered; Now can pull out charger, stop charging to the battery 4 of mobile terminal.
The charge management circuit of the present embodiment, detected the cell voltage of mobile terminal by auxiliary charging module 7, and switch to the loop of battery 4 charging of governor circuit 3 pairs of mobile terminals when the cell voltage of mobile terminal equals the load starting resistor of mobile terminal and the load 5 of mobile terminal is powered.Achieve auxiliary charging module 7 to charge to the battery 4 of mobile terminal under the different voltages of the battery 4 of mobile terminal from governor circuit 3, ensure that the load 5 of mobile terminal can preferentially can start while the battery 4 of mobile terminal charges simultaneously, and by the large current charge of governor circuit 3, shorten the charging interval.Adopt the technical scheme of the present embodiment can make the battery 4 of mobile terminal in the situation of overdischarge pond, when charging to the battery 4 of mobile terminal, the load 5 of mobile terminal preferentially starts.
Fig. 3 is the principle schematic of another embodiment of charge management circuit of the present invention.The charge management circuit of the present embodiment, on the basis of above-mentioned technical scheme embodiment illustrated in fig. 2, introduces technical scheme of the present invention further in further detail.As shown in Figure 3, in the charge management circuit of the present embodiment, isolation module 6 specifically can adopt PMOS, the source electrode (Source of PMOS; S) be connected with the output of governor circuit 3, the drain electrode (Drain of PMOS; D) be connected with the positive pole of the battery 4 of mobile terminal, by controlling the control of the battery 4 realizing isolation module 6 pairs of mobile terminals that is turned on or off of PMOS source electrode and drain electrode.When PMOS source electrode and drain electrode disconnect, the battery 4 of mobile terminal is isolated by isolation module 6, and when PMOS source electrode and drain electrode conducting, isolation module 6 is closed and isolated the battery 4 of mobile terminal.When load starting resistor lower than mobile terminal of the cell voltage of mobile terminal, PMOS source electrode and drain electrode acquiescence off-state disconnect, thus the battery 4 of isolation mobile terminal, prevent the battery 4 of governor circuit 3 to described mobile terminal to charge, the load 5 making governor circuit 3 be only described mobile terminal is powered.
Auxiliary charging module comprises PNP triode 71, current source 72 and comparator 73; Emitter (the Emitter of PNP triode 71; E) be connected with the input of governor circuit 3, the base stage (Base of PNP triode 71; B) be connected with the control end of current source 72, the collector electrode (Collector of PNP triode 71; C) be connected with the positive pole of the input of comparator 73 and the battery 4 of mobile terminal respectively.Whether charged by the battery 4 that can control auxiliary charging module 7 pairs of mobile terminals that is turned on or off controlling PNP triode 71.The reference edge 9 of comparator 73 arranges reference voltage, and reference voltage is greater than or equal to load 5 starting resistor of mobile terminal.When PNP triode 71 conducting, when the battery 4 of auxiliary charging module 7 pairs of mobile terminals is charged, comparator 73 can detect the cell voltage of mobile terminal, and compare the cell voltage of mobile terminal and the magnitude relationship of reference voltage, when the cell voltage of mobile terminal is less than reference voltage, the output of comparator 73 does not export control signal, current source 72 provides electric current for auxiliary charging module 7, and then PNP triode 71 conducting, auxiliary charging module 7 works, and the battery 4 that auxiliary charging module 7 continues as mobile terminal charges.When detecting that the cell voltage of mobile terminal equals reference voltage, the output of comparator 73 sends control signal to current source 72, cut-off current source 72, and then PNP triode 71 disconnects, auxiliary charging module 7 quits work, and auxiliary charging module 7 stops charging to the battery 4 of mobile terminal.
Further, by PNP triode 71, current source 72 and comparator 73 concentrated setting at pond administrative unit (Power Management Unit; PMU), in PMU, be provided with control module 8, and be connected with the grid of PMOS.After comparator 73 cut-off current source 72, comparator 73 can send a signal to control module 8, signal is being sent to the grid of PMOS by control module 8, and then triggers source electrode and the drain electrode conducting of PMOS, is charged by the battery 4 of governor circuit 3 pairs of mobile terminals.
Particularly, in Fig. 3 for the voltage after battery (BAT) overdischarge for 0V, the load starting resistor of setting mobile terminal is 3.4V, main control circuit acquiescence exports 3.4V, acquiescence current limliting can support mobile terminal work, wherein Vbat represents the voltage of battery, describes whole workflow in detail.
As 0V<Vbat<3.4V, control module 8 gives tacit consent to output high level, and make PMOS be in closed condition, namely the battery 4 of mobile terminal is isolated.When after insertion charger, governor circuit 3 exports the load starting resistor of 3.4V to mobile terminal, and current limliting is enough large, and support mobile terminal work, the load 5 of mobile terminal starts.Now governor circuit 3 does not charge to the battery 4 of mobile terminal.On the other hand, comparator 73 in auxiliary charging module 7 is provided with the reference voltage of 3.4V, and comparator 73 detects cell voltage, as Vbat<3.4V, the output of comparator 73 does not export control signal, and current source 72 provides electric current for auxiliary charging module 7, and then PNP triode 71 conducting, auxiliary charging module 7 works, and the battery 4 of auxiliary charging module 7 pairs of mobile terminals charges, until 3.4V.Now, Vbat >=3.4V, the output of comparator 73 exports control signal, cut-off current source 72, and then PNP triode 71 disconnects, and auxiliary charging module 7 quits work, and auxiliary charging module 7 stops charging to the battery 4 of mobile terminal.Comparator 73 can also send signal to control module 8 afterwards, and signal is sent to the grid of PMOS by control module 86 again, makes the grid input low level of PMOS, and then triggers PMOS conducting, is charged by the battery 4 of governor circuit 3 pairs of mobile terminals.Now governor circuit is powered to the load 5 of mobile terminal while charging to the battery 4 of mobile terminal, enters normal charging process, until the battery 4 of mobile terminal is full of.
It should be noted that, in auxiliary charging module 7, PNP triode 71 also can be NPN triode, but its emitter, base stage and the collector electrode annexation in auxiliary charging module 7 can change, and particularly, with reference to the operation principle of triode, does not repeat them here.
The charge management circuit of the present embodiment, detected the voltage of battery by comparator 73 while battery 4 charging of auxiliary charging module 7 pairs of mobile terminals, when reaching the reference voltage that comparator 73 is arranged, control signal is sent by comparator 73, cut-off current source 72, and then control auxiliary charging module 7 stops charging to the battery 4 of mobile terminal.Trigger source electrode and the drain electrode conducting of PMOS afterwards, charged by the battery 4 of governor circuit 3 pairs of mobile terminals, achieve auxiliary charging module 7 to charge to the battery 4 of mobile terminal under the different voltages of the battery 4 of mobile terminal from governor circuit 3, ensure that the load 5 of mobile terminal can preferentially can start while the battery 4 of mobile terminal charges simultaneously.
Adopt the technical scheme of the present embodiment can make the battery 4 of mobile terminal in the situation of overdischarge pond, when charging to the battery 4 of mobile terminal, the load 5 of mobile terminal preferentially starts, thus enhances the Experience Degree of user.
Fig. 4 is the embodiment flow chart of the charge control method of mobile terminal of the present invention.As shown in Figure 4, the charge control method of the mobile terminal of the present embodiment comprises:
101, when load starting resistor lower than mobile terminal of the cell voltage of mobile terminal, the battery of isolation module isolation mobile terminal;
102, stop the battery of governor circuit to mobile terminal to charge, make described governor circuit be only the load supplying of described mobile terminal;
The input of isolation module is connected with the output of governor circuit, and the output of isolation module is connected with the positive pole of the battery of mobile terminal.Mobile terminal cell voltage lower than mobile terminal load start voltage time, isolation module inside disconnects, isolation module, for isolating the battery of mobile terminal, stops the battery of governor circuit to mobile terminal to charge, makes governor circuit be only the load supplying of mobile terminal.
103, auxiliary charging module is charged to the battery of mobile terminal.
The input of auxiliary charging module is connected with the input of governor circuit, and the output of auxiliary charging module is connected with the positive pole of the battery of mobile terminal.When battery management circuit works, the battery of auxiliary charging module and mobile terminal forms complete loop, and make after the battery of isolation module isolation mobile terminal, auxiliary charging module is charged to the battery of mobile terminal.
The charge control method of the mobile terminal of the present embodiment, be specifically as follows the using method of above-mentioned charge management circuit embodiment illustrated in fig. 2, realize controlling identical with above-mentioned realization mechanism embodiment illustrated in fig. 2 to the charging of mobile terminal, with reference to the relevant record of above-described embodiment, can not repeat them here in detail.
The charge control method of the mobile terminal of the present embodiment, by between the output that isolation module is arranged on the governor circuit of charger and the battery of mobile terminal, can when the load starting resistor of the cell voltage of mobile terminal lower than mobile terminal, the battery of mobile terminal and governor circuit are isolated, charger is stoped to charge to the battery of mobile terminal, the load supplying of governor circuit only to mobile terminal, makes the load of mobile terminal normally start.Additionally by auxiliary charging module, make after the battery of isolation module isolation mobile terminal, auxiliary charging module is charged to the battery of mobile terminal.Adopt the technical scheme of the present embodiment, battery at mobile terminal can be solved in the situation of overdischarge pond, the problem that the load of mobile terminal cannot start, achieve preferentially to the load supplying of mobile terminal when charger charges to mobile terminal, when mobile terminal overdischarge, as mobile terminal is discharged to shutdown, plug charger, also can ensure mobile terminal immediately start, not delay the use of user, thus effectively enhance the Experience Degree of user.
Further, the charge control method of the mobile terminal of above-described embodiment, after auxiliary charging module is to the battery charging of mobile terminal, can also comprise the steps:
(1) when auxiliary charging module detects that the cell voltage of mobile terminal equals the load start voltage of mobile terminal, stop charging to the battery of mobile terminal.
Due to auxiliary charging module for little current source provides electric current, longer to the battery charge time of mobile terminal, be therefore not suitable for charging to the battery of mobile terminal by auxiliary charging module always.When the cell voltage of mobile terminal equals the load start voltage of mobile terminal, the battery that the output voltage of governor circuit can not be moved terminal drags down, and the load of mobile terminal still can start.
(2) isolation module is closed and is isolated the battery of mobile terminal, and described governor circuit was both charged to the battery of described mobile terminal, was again the load supplying of described mobile terminal simultaneously.Isolation module is closed and is isolated the battery of mobile terminal, makes the positive pole of the battery of mobile terminal be connected to form loop with the input of the output of governor circuit and the load of mobile terminal respectively.Now the battery of governor circuit to mobile terminal charges, and gives the load supplying of mobile terminal simultaneously.
The charge control method of the mobile terminal of the present embodiment, detect the cell voltage of mobile terminal by auxiliary charging module, and switch to governor circuit when voltage is started shooting in the load that the cell voltage of mobile terminal equals mobile terminal to the battery charge circuit of mobile terminal and the load supplying to mobile terminal.Achieve auxiliary charging module to charge to the battery of mobile terminal under the different voltages of the battery of mobile terminal from governor circuit, ensure that the load of mobile terminal can preferentially can start while the battery charging of mobile terminal simultaneously, and by the large current charge of governor circuit, shorten the charging interval.Adopt the technical scheme of the present embodiment can make the battery of mobile terminal in the situation of overdischarge pond, when charging to the battery of mobile terminal, the load of mobile terminal preferentially starts.
The present invention also provides a kind of mobile terminal, above-mentioned Fig. 2 or charge management circuit embodiment illustrated in fig. 3 is provided with in battery management unit in this mobile terminal, and the charge control method of above-mentioned mobile terminal embodiment illustrated in fig. 4 can be adopted to realize charging to the battery of mobile terminal, realize principle in detail and realize effect with reference to the relevant record of above-described embodiment, not repeat them here.
One of ordinary skill in the art will appreciate that: all or part of step realizing above-mentioned each embodiment of the method can have been come by the hardware that program command is relevant.Aforesaid program can be stored in a computer read/write memory medium.This program, when performing, performs the step comprising above-mentioned each embodiment of the method; And aforesaid storage medium comprises: ROM, RAM, magnetic disc or CD etc. various can be program code stored medium.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.

Claims (10)

1. a charge management circuit, is characterized in that, described charge management circuit comprises isolation module and auxiliary charging module; The input of described isolation module is connected with the output of governor circuit, and the output of described isolation module is connected with the positive pole of the battery of mobile terminal; Described isolation module, for described mobile terminal cell voltage lower than described mobile terminal load start voltage time, isolate the battery of described mobile terminal, stop the battery of described governor circuit to described mobile terminal to charge, make described governor circuit be only the load supplying of described mobile terminal; The input of described auxiliary charging module is connected with the input of described governor circuit, and the output of described auxiliary charging module is connected with the positive pole of the battery of described mobile terminal; Described auxiliary charging module, after isolating the battery of described mobile terminal at described isolation module, charges to the battery of described mobile terminal.
2. charge management circuit according to claim 1, it is characterized in that, described auxiliary charging module, also for when detecting that the cell voltage of described mobile terminal equals the load starting resistor of described mobile terminal, stops charging to the battery of described mobile terminal.
3. charge management circuit according to claim 2, it is characterized in that, described isolation module, also for after described auxiliary charging module stopping is to the battery charging of described mobile terminal, close and the battery of described mobile terminal is isolated, described governor circuit was both charged to the battery of described mobile terminal, was again the load supplying of described mobile terminal simultaneously.
4. according to the arbitrary described charge management circuit of claim 1-3, it is characterized in that, described isolation module adopts PMOS, the source electrode of described PMOS is connected with the output of described governor circuit, the drain electrode of described PMOS is connected with the positive pole of the battery of described mobile terminal, with when load starting resistor lower than described mobile terminal of the cell voltage of described mobile terminal, isolate the battery of described mobile terminal, stop the battery of described governor circuit to described mobile terminal to charge, make described governor circuit be only the load supplying of described mobile terminal.
5. charge management circuit according to claim 4, is characterized in that, described auxiliary charging module comprises PNP type triode, current source and comparator; The emitter of described PNP type triode is connected with the input of described governor circuit, the base stage of described PNP type triode is connected with the control end of described current source, and the collector electrode of described PNP type triode is connected with the positive pole of the input of described comparator and the battery of described mobile terminal respectively; The reference edge of described comparator arranges reference voltage, and described reference voltage is greater than or equal to the load starting resistor of described mobile terminal; Described comparator, for the voltage of the battery of more described mobile terminal and the magnitude relationship of described reference voltage, when the voltage of the battery of described mobile terminal is less than described reference voltage, the output of described comparator does not export control signal, continues as the battery charging of described mobile terminal.
6. charge management circuit according to claim 5, it is characterized in that, described comparator, also for when the voltage of the battery described mobile terminal being detected equals described reference voltage, the output of described comparator sends control signal to described current source, turn off described current source, stop charging to the battery of described mobile terminal.
7. charge management circuit according to claim 6, it is characterized in that, the grid link control module of described PMOS, described control module, after turning off described current source at described comparator, trigger the described source electrode of described PMOS and described drain electrode conducting, both charged to the battery of described mobile terminal by described governor circuit, be again the load supplying of described mobile terminal simultaneously.
8. a mobile terminal, is characterized in that, is provided with the arbitrary described charge management circuit of as above claim 1-7 in the battery management unit in described mobile terminal.
9. a charge control method for mobile terminal, is characterized in that, described method comprises:
When load starting resistor lower than described mobile terminal of the cell voltage of mobile terminal, isolation module isolates the battery of described mobile terminal, stop the battery of described governor circuit to described mobile terminal to charge, make described governor circuit be only the load supplying of described mobile terminal; The input of described isolation module is connected with the output of described governor circuit, and the output of described isolation module is connected with the positive pole of the battery of described mobile terminal;
Described auxiliary charging module is charged to the battery of described mobile terminal; The described input of auxiliary charging module is connected with the input of governor circuit, and the described output of auxiliary charging module is connected with the positive pole of the battery of mobile terminal.
10. method according to claim 9, is characterized in that, described method also comprises:
When described auxiliary charging module detects that the cell voltage of described mobile terminal equals the load starting resistor of described mobile terminal, stop charging to the battery of described mobile terminal;
Described isolation module is closed and is isolated the battery of described mobile terminal, and described governor circuit was both charged to the battery of described mobile terminal, was again the load supplying of described mobile terminal simultaneously.
CN201510347329.XA 2015-06-19 2015-06-19 Charging management circuit, mobile terminal and charging control method of mobile terminal Pending CN104917245A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510347329.XA CN104917245A (en) 2015-06-19 2015-06-19 Charging management circuit, mobile terminal and charging control method of mobile terminal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510347329.XA CN104917245A (en) 2015-06-19 2015-06-19 Charging management circuit, mobile terminal and charging control method of mobile terminal

Publications (1)

Publication Number Publication Date
CN104917245A true CN104917245A (en) 2015-09-16

Family

ID=54086063

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510347329.XA Pending CN104917245A (en) 2015-06-19 2015-06-19 Charging management circuit, mobile terminal and charging control method of mobile terminal

Country Status (1)

Country Link
CN (1) CN104917245A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106130093A (en) * 2016-06-28 2016-11-16 努比亚技术有限公司 A kind of battery charge controller and method
CN107732991A (en) * 2016-08-11 2018-02-23 中兴通讯股份有限公司 Terminal charge control method, device and terminal
CN110391472A (en) * 2018-04-19 2019-10-29 中兴通讯股份有限公司 A kind of cell managing device and mobile terminal
CN110783988A (en) * 2019-11-08 2020-02-11 深圳微步信息股份有限公司 Charging circuit and electronic device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5578875A (en) * 1993-06-02 1996-11-26 Vtech Communications, Ltd. Dual battery recharger with backup power feature for use in systems having a base unit and battery-powered portable unit
CN102694396A (en) * 2011-03-21 2012-09-26 联想(北京)有限公司 Electronic device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5578875A (en) * 1993-06-02 1996-11-26 Vtech Communications, Ltd. Dual battery recharger with backup power feature for use in systems having a base unit and battery-powered portable unit
CN102694396A (en) * 2011-03-21 2012-09-26 联想(北京)有限公司 Electronic device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106130093A (en) * 2016-06-28 2016-11-16 努比亚技术有限公司 A kind of battery charge controller and method
CN107732991A (en) * 2016-08-11 2018-02-23 中兴通讯股份有限公司 Terminal charge control method, device and terminal
CN110391472A (en) * 2018-04-19 2019-10-29 中兴通讯股份有限公司 A kind of cell managing device and mobile terminal
CN110391472B (en) * 2018-04-19 2021-04-06 中兴通讯股份有限公司 Battery management device and mobile terminal
CN110783988A (en) * 2019-11-08 2020-02-11 深圳微步信息股份有限公司 Charging circuit and electronic device

Similar Documents

Publication Publication Date Title
CN102832669B (en) Intelligent charge-discharge control circuit of battery
CN204497772U (en) A kind of portable power source Apparatus and system of quick electric power storage
CN103647313B (en) Charging control circuit
CN104917245A (en) Charging management circuit, mobile terminal and charging control method of mobile terminal
CN102222949B (en) Device and method for managing batteries
CN103490389B (en) Battery protecting circuit and system
KR101523335B1 (en) Automatic recognition system for battery characteristics, storage device for battery information applied for it and method of optimization for battery management device using the same
CN102570520A (en) Charging circuit and charging method thereof
CN102185972B (en) Novel mobile terminal software upgrading system and method as well as mobile terminal
CN101924384B (en) Mobile terminal and charging protection method and device thereof
CN102842739A (en) Battery charging method, apparatus, and system
CN105576744A (en) Charge pal switching implementation method and charge pal
CN104993534A (en) Mobile terminal and charge control method thereof
CN202978308U (en) Movable power supply device
CN104795864A (en) Mobile terminal capable of detecting charge state accurately and charge state detecting method
CN204497782U (en) A kind of portable power source
CN102231769A (en) Method for turning on mobile phone with over-discharged cell and mobile phone
CN103427821B (en) Power management device realizing zero standby current
CN103236832A (en) Logic timing control circuit and parallel charging and serial discharging control circuit
WO2016090763A1 (en) Terminal device battery and method for control of charge and discharge thereof
CN101222075B (en) Nickel-hydrogen battery charging method for mobile communication apparatus
CN104115361A (en) Method and circuitry for battery protection
CN210780140U (en) Detection circuit, data line and charger
EP2852021B1 (en) Charging circuit and control method therefor
CN204205573U (en) Charge protector of battery

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20150916

RJ01 Rejection of invention patent application after publication