CN1812220A - Mobile telephone battery charging controlling method and apparatus thereof - Google Patents
Mobile telephone battery charging controlling method and apparatus thereof Download PDFInfo
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- CN1812220A CN1812220A CNA2005100112648A CN200510011264A CN1812220A CN 1812220 A CN1812220 A CN 1812220A CN A2005100112648 A CNA2005100112648 A CN A2005100112648A CN 200510011264 A CN200510011264 A CN 200510011264A CN 1812220 A CN1812220 A CN 1812220A
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Abstract
This invention relates to a kind of charge controlling method of mobile phone battery and the apparatus. It is adequate for the situation that the battery is on the mobile phone and is charging. It concludes steps of detecting the battery voltage and temperature. They are used for controlling that battery can charge when voltage has not attained full-voltage and temperature is normal. It also concludes the battery charge controlling step when voltage has not attained full-voltage but temperature is not normal. This method ensures that mobile phone can charge when the battery temperature is not normal but the voltage meets definite situation.
Description
Technical field
The present invention relates to mobile phone, especially relate to a kind of charge control method and device thereof of battery of mobile phone.
Background technology
In today that information industry is advanced by leaps and bounds, mobile phone has become people's routine work widely used communication tool of living.Directly have influence on the length of cell phone standby and air time as the quality of the battery of auxiliary products and charger quality, if security performance has problem also can directly relate to the person and property safety.Therefore, the cellular phone power supplies management also becomes more and more important.Some cellular phone power supplies management system application-specific integrated circuits have been used in GSM and the CDMA battery of mobile phone.Undesired (under the situation of (more than 50 ℃ or below-10 ℃), battery of mobile phone is a complete charge, and owing to also occurs the charging animation when improper temperature and complete charge on the display screen of mobile phone but present battery of mobile phone is at battery temperature.Bring many inconveniences for like this user of mobile phone.
Fig. 1 is charging mobile phone battery (battery is installed on the mobile phone and the charges) schematic flow sheet of prior art.In Fig. 1, core DBB in the mobile phone or ABB (digital baseband processor or analogue baseband processors) at first detect cell voltage, battery temperature, step 101; Then, judge again whether voltage completely presses step 102; In this way, complete charge, step 103 then need have not been recharged; As not, judge further then whether battery temperature is normal, step 104; As normally, then battery is charged normal step 105; Undesired as battery temperature, then finish battery charge, step 106.The charging mobile phone battery of prior art is when battery temperature is unusual, and mobile phone promptly can't charge.
Fig. 2 is the state machine diagram of the battery of mobile phone of prior art.The state that the battery of mobile phone management system of prior art will be controlled comprises: charge normal enabled state (CHARGE_ENABLE) 1, forbid charged state (CHARGE_DISABLE) 2, prepare charge initiation state (TA_STARTUP) 3, do not prepare charge initiation state (NTA_STARTUP) 4, talking state (CALL) 5, idle state (IDLE) 6.Can change between different states, the wire list between different conditions is understood the relation between the state that can change, and what the arrow line direction was pointed to is the state that will be transformed into.Wherein, starting state when preparing charge initiation state (TA_STARTUP) 3 and promptly being installed in battery on the mobile phone and linking to each other with charger, the starting state when not preparing charge initiation state (NTA_STARTUP) 4 and promptly being installed in battery on the mobile phone and not linking to each other with charger.
Fig. 3 is the state transition graph of the battery of mobile phone of prior art, connects with the line of being with arrow between convertible state among the figure, represents corresponding switch process with corresponding label on the arrow line.At first enter initialization function status 7, under this state, forbid charging, carry out the initialization of variable earlier, and determine initialized state (STATE), if any TA (promptly linking to each other), then enter and prepare charge initiation state (TA_STARTUP) 3, as no TA (not linking to each other) with charger with charger, then enter the charge initiation state (NTA_STARTUP) 4 of not preparing, step 31 and step 36 in the corresponding switch process difference corresponding diagram 3.Behind the TA_STARTUP, charge normal enabled state (CHARGE_ENABLE) 1 by judging whether battery temperature normally is switchable to, shown in step 32; Or be converted to and forbid charged state (CHARGE_DISABLE) 2, shown in step 33.Accordingly, by the triggering of certain condition, charge normal enabled state (CHARGE_ENABLE) 1 and forbid to change mutually between the charged state (CHARGE_DISABLE) 2, shown in step 34, step 35.After system enters and prepares charge initiation state (TA_STARTUP) 3, under this state, forbid charging, driving 150ms device obtains mean value after the signal of TEMPSENSE pin is read 16 times after, judge whether temperature is normal, and enter according to judged result and to charge normal enabled state 1 and to forbid charged state 2.Other state exchange specifically as shown in Figure 3.Table 1 further shows correlation and switch condition and the step between the state of prior art battery charge control.
| NTA_STARTUP | - | Step 312 connects with TA | - | - | - | Step 37 is not in the conversation | In step 38 conversation |
| IDLE | - | Step 315 connects with TA | - | - | - | - | Step 39 begins conversation |
Table 1
Introduce step and the possible under given conditions conversion that to carry out when battery is in each state below in detail.
(1) system is in the initialization function status, forbids charging under this state, and the step that carry out comprises:
Step a1, initialization of variable
Step a2, decision init state (STATE)
Wherein, if TA is arranged, be converted to TA_STARTUP (step 31)
Wherein, if there is not TA, be converted to NTA_STARTUP (step 36)
Step a3 drives the 150ms counter
When (2) system is in the TA_STARTUP state, forbid charging:
Step b1 drives 150ms timer (till TEMPSENSE being read obtain mean value 16 times)
Step b2 reads TEMPSENSE to carry out state exchange after 16 times
Wherein, when temperature just often, be converted to CHARGE_ENABLE state (step 32);
Improper when temperature, be converted to CHARGE_DISABLE (step 33);
When (3) system was in the CHARGE_ENABLE state, system carried out following steps
Step c1 begins charging;
Step c2, drive the 2sec timer (up to take place EOC or temperature improper till);
Step 34 is converted to state CHARGE_DISABLE in the time of till generation EOC of system or temperature are improper;
Wherein, detect eoc signal, when EOC takes place, go to CHARGE_DISABLE (step 341);
Wherein, detect the TEMPSENSE signal, when temperature is improper, go to CHARGE_DISABLE (step 342).
When (4) system is in the CHARGE_DISABLE state, forbid charging, carry out following steps:
Steps d 1 drives 2sec timer (up to than till recharging that voltage is low and also having temperature normal);
Steps d 2, up to than recharge voltage (being generally 4.1V) low till, detect the MVBAT signal;
Wherein,, begin to detect the TEMPSENSE signal, till temperature is normal, go to CHARGE_ENABLE state (step 35) if lower than recharging voltage.
When (5) system is in the NTA_STARTUP state, forbid charging
Step e1 drives 150ms timer (till MVBAT being read obtain mean value 16 times)
Step e2 reads the later Level that determines present battery to MVBAT pin signal 16 times, conversion battery of mobile phone state;
As conversing, then go to CALL state (step 38), otherwise change idle state (step 37) over to.
When (6) system is in the IDLE state
Step f1 drives the 10sec timer;
Step f2 detects the MVBAT signal and determines battery Level later on;
Wherein, in confirming whether to converse, then change CALL state (step 39) in this way over to.
When (7) system is in the CALL state
Step g 1 drives the 3sec timer;
Step g 2 detects the MVBAT signal present battery Level of decision later on;
Wherein, in confirming whether to converse, if not, then change IDLE state (step 310) over to.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of charge control method and device thereof of battery of mobile phone, to be implemented in battery temperature when undesired, still can meet some requirements down battery of mobile phone is carried out charging when unusual at cell voltage, make that can the undesired of temperature not occur because of one at the battery of mobile phone that charges is complete charge, has made things convenient for cellphone subscriber's use like this.
To achieve these goals, the invention provides a kind of charge control method of battery of mobile phone, be applicable to that battery is installed in the situation of charging on the mobile phone, comprise the step that detects cell voltage and battery temperature, being used to control battery does not reach under full pressure, the normothermic situation at its voltage and charges, wherein, also be included in the step that cell voltage does not reach control battery charge under full pressure and the abnormal situation of temperature.
The charge control method of described battery of mobile phone, wherein, the described step that does not reach under full pressure and the abnormal situation of temperature the control battery charge at cell voltage further comprises:
Steps A judges whether battery temperature is undesired;
Step B in this way, judges further that then whether cell voltage is less than a unusual charging preset value;
Step C, as cell voltage be less than as described in unusual charging preset value, then control battery and carry out unusual time charging, described when unusual charging can be with the battery scheduled time length of charging repeatedly;
Step D is if cell voltage is not less than described unusual charging preset value, then complete charge.
The charge control method of described battery of mobile phone, wherein, described battery is a lithium ion battery; Described cell voltage does not reach full pressure and refers to cell voltage and be lower than 4.2V; The undesired battery temperature that refers to of described temperature is between between-10 ℃～-20 ℃ and/or between 50 ℃～60 ℃.
The charge control method of described battery of mobile phone, wherein, the unusual charging preset value of described cell voltage is 3.5V; A described scheduled time length is 70 seconds.
The charge control method of described battery of mobile phone wherein, further comprises the setting up procedure of the preparation charging that a charging is preceding, and the setting up procedure of described preparation charging specifically comprises:
Step e judges whether battery temperature is normal;
Step F in this way, then enters and charges normal enabled state, and battery can charge normal;
Step G as not, then further judges that whether described cell voltage is less than described unusual charging preset value;
Step H in this way less than unusual charging preset value, then enters described charged state when unusual, prepares battery is carried out charging when unusual;
Step I, as be not less than unusual charging preset value, then enter and forbid charged state.
The charge control method of described battery of mobile phone, wherein, the described battery that charges normal further comprises the step that an end charges normal, and specifically comprises:
When receiving the charging end signal, complete charge; Or
Judge battery temperature, when undesired and cell voltage is not less than unusual charging preset value when battery temperature, complete charge; Or
When undesired and cell voltage was less than unusual charging preset value when battery temperature, battery entered described charged state when unusual by described normal charging condition.
The charge control method of described battery of mobile phone, wherein, the described battery of forbidding charged state that is in comprises that further one reenters the step of charged state, specifically comprises:
Step J judges that whether cell voltage is less than recharging voltage;
Step K in this way, judges further whether battery temperature is normal;
Step L, as normally, then battery enters and charges normal enabled state;
Step M as undesired, judges further that then whether cell voltage is less than described unusual charging preset value;
Step N, in this way less than described preset value, then battery enters described charged state when unusual.
The charge control method of described battery of mobile phone, wherein, the described voltage that recharges is 4.1V.
The charge control method of described battery of mobile phone wherein, describedly is in the battery of charged state when unusual and further comprises the step that finishes described charging when unusual, specifically comprises:
When receiving described charging end signal, complete charge; Or
When described when having reached described predefined time span when unusual the charging interval, complete charge; Or
When battery temperature recovers normal and the not enough normal charging condition that then reenters of cell voltage.
The present invention also provides a kind of battery charge controller of battery of mobile phone, be applicable to that battery is installed in the situation of charging on the mobile phone, comprise that one is arranged on the cellular phone power supplies management integrated circuit on the mobile phone, one microprocessor, one flash memory and be arranged on the battery temperature detection module on the described flash memory and judge whether normal judge module of described battery temperature and battery voltage detection module, be used to control battery and do not reach full pressure at its voltage, charge under the normothermic situation, wherein, also comprise charge control module when unusual, be used for not reaching under full pressure and the abnormal situation of battery temperature and control battery charge at cell voltage.
The battery charge controller of described battery of mobile phone, wherein, described when unusual charge control module further comprise:
One unusual charging preset value judge module is used to judge that whether cell voltage is less than described unusual charging preset value;
One charging module when unusual is used under the situation of the undesired and described cell voltage of described battery temperature less than described unusual charging preset value described battery being charged repeatedly.
The battery charge controller of described battery of mobile phone, wherein, described battery is a lithium ion battery; Described cell voltage does not reach full pressure and refers to cell voltage and be lower than 4.2V; The undesired battery temperature that refers to of described temperature is between between-10 ℃～-20 ℃ and/or between 50 ℃～60 ℃.
The battery charge controller of described battery of mobile phone, wherein, the unusual charging preset value of described cell voltage is 3.5V; A described scheduled time length is 70 seconds.
The battery charge controller of described battery of mobile phone wherein, is realized the charging of described battery of mobile phone is controlled from respective battery voltage, the battery temperature signal of described cellular phone power supplies management integrated circuit by described microprocessor processes.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Description of drawings
Fig. 1 is the charging mobile phone battery schematic flow sheet of prior art;
Fig. 2 is the state machine diagram of the battery of mobile phone of prior art;
Fig. 3 is the state transition graph of the battery of mobile phone of prior art;
Fig. 4 is the charging circuit schematic diagram on the mobile phone of being arranged on of the embodiment of the invention;
Fig. 5 is the hardware state flow chart of the embodiment of the invention;
Fig. 6 is the current/voltage figure in lithium ion when charging of the embodiment of the invention;
Fig. 7 is a charging mobile phone battery schematic flow sheet of the present invention;
Fig. 8 is the state machine diagram of the battery of mobile phone of the embodiment of the invention;
Fig. 9 is the schematic flow sheet of the embodiment of the invention.
Wherein, Reference numeral is as follows:
1-charges normal enabled state (CHARGE_ENABLE)
2-forbids charged state (CHARGE_DISABLE)
3-prepares charge initiation state (TA_STARTUP)
4-does not prepare charge initiation state (NTA_STARTUP)
5-talking state (CALL)
6-idle state (IDLE)
7-initialization function status
The 8-analogue baseband processors
The 9-battery of mobile phone
Charged state when 11-is unusual (CHARGE_ABNORML)
Embodiment
Fig. 4 is the charging circuit schematic diagram on the mobile phone of being arranged on of the embodiment of the invention, shows the charging principle of battery of mobile phone.The present invention is applicable to that battery is installed in the situation of charging on the mobile phone.In Fig. 4, the analogue baseband processors 8AD 6535 (Analog BasebandProcessor) that comprises the cellular phone power supplies management function is connected with battery of mobile phone 9 by corresponding GPIO input and output pin, realize voltage thus to battery of mobile phone 9, temperature, the function that signals such as charging current detect, and detected signal is sent in the processor handles, to realize charging control to battery of mobile phone, comprise that monitoring is full of, carry out charge step, complete charge step and under different charged states, changing, wherein said charge step comprise under the temperature normal condition charge normal step and unusual under the temperature anomaly situation time charge step.The corresponding program module that realizes above-mentioned control charging mobile phone battery is stored in the FLASH memory (flash memory) in the mobile phone.Table 2 shows the function of the respective pin of analogue baseband processors 8.Wherein, analogue baseband processors 8 can be the chip of other models or has core DBB (digital baseband processor) chip of corresponding function.
| The pin title | Functional description |
| VCHG | The charger power supply-when the voltage of this pin was enough high, the CHGDET signal became high level, showed that this moment, charger can be used |
| CHGOSC | The charger oscillating capacitance |
| GATEDRIVE | The output of charging digital to analog converter |
| BATTYPE | If defining a battery when being lower than a threshold values, battery types identification output-cell voltage need charge |
| CHGDACREF | Charging digital-to-analogue conversion reference voltage |
| ISENSE | The charging current transducer |
| VBATSENSE | Cell voltage |
| TEMP2 | The temperature sensor passage |
| EOC | The charging end signal |
| CHRDET | The charging detection signal |
| MVBAT | Cell output voltage |
| TEMPSENSE | Temperature sensor |
| CHGEN | Charge normal and enable |
| GATEIN | The microprocessor grid control signal |
Table 2
For realizing charging control of the present invention, the signal of importing from analogue baseband processors 8 hardware comprises: charging end signal (EOC-END OF CHARGE), and when battery was full of, corresponding EOC pin became high level; Whether charging detection signal (CHRDET-CHARGE DETECT OUTPUT) is used for detecting and will charges, when it shows and need charge during for high level, when it does not show and need charge during for low level; Cell output voltage (MVBAT-DIVIDED BATTERY VOLTAGEOUTPUT) decides present battery to divide residing level according to voltage by the signal that reads this pin; Temperature sensor (TEMPSENSE) is checked the temperature of present battery, the control of charging then by the signal that reads this pin.In the embodiments of the invention, battery is lithium ion (Lithium-ion) battery, according to the magnitude of voltage of battery battery electric quantity is divided into 6 grades (level), specifically divides as follows:
1.Level_3:3.80[V] more than
2.Level_2:3.73[V] above～3.80[V] below
3.Level_1:3.62[V] above _ 3.73[V] below
4.Level_0:3.50[V] above～3.62[V] below
5.Warning:3.35[V] above～3.50[V] below
6.Shutdown:3.35[V] below
When the mobile phone of charged pool does not link to each other with charger, on the display screen of mobile phone, have corresponding demonstration according to the residing rank of battery.When cell voltage between 3.35V when the 3.50V, core ABB (analogue baseband processors) chip can give a warning, core ABB can close mobile phone because of battery electric quantity is not enough when cell voltage is lower than 3.35V.
Fig. 5 is the hardware state flow chart of the embodiment of the invention.At first detect whether step 501 to be charged; If not, then be changed to the charge function closed condition, step 502; Detect the battery whether charging of needing is arranged, step 503 then; If not, then be changed to no battery status, step 504; In this way, then further judge whether to take place DDLO (deep discharge locking), step 505; If DDLO takes place, then is changed to the DDLO state, step 506; If DDLO does not take place, then further judge whether to take place UVLO (under voltage locking), step 507; If UVLO takes place, then is changed to the UVLO state, step 508; If UVLO does not take place, then enter the charging standby condition, step 509.
To battery charge the time, need enable CHGEN (charge normal and the enable) pin of analogue baseband processors 8 earlier, microprocessor grid control signal GATEIN enables by the CHGEN signal.The process that enables to charge is:
CHGEN＝LOW→DELAY→GATEIN＝LOW
Charging DISABLE (forbidding charging) process is:
GATEIN＝HIGH→Delay→CHGEN＝HIGH
Wherein, the reason of DELAY is because if problem can take place the words of change simultaneously, so give the delay of 130ms.
Fig. 6 is the current/voltage figure in lithium ion when charging of the embodiment of the invention.As shown in Figure 6, the battery that is discharged fully is full of 3 hours (not the comprising precharge time) of maximum need of time of battery.In Fig. 6, whole charging process comprises constant current charge (CC) process and constant voltage (CV) charging process.Elder generation's constant current charge reaches the magnitude of voltage (being 4.2V under the normal condition) that certain is determined up to voltage, keeps this magnitude of voltage (areas of permanent pressure) then and continues charging, drops to 10% of initial ratio up to charging current.If dropping to the words that recharge below the voltage (4.1V), the voltage of battery to begin charging after the complete charge.
Fig. 7 is a charging mobile phone battery schematic flow sheet of the present invention.In Fig. 7, the core ABB in the mobile phone at first detects cell voltage, battery temperature, step 701; Then, judge that more whether voltage completely presses, and is generally 4.2V ± 0.03V, step 702; In this way, complete charge, step 703 then need have not been recharged; As not, judge further then whether battery temperature is normal, step 704; As normally, then battery is charged normal step 705; Undesired as battery temperature, judge further that then whether cell voltage is less than 3.5V, step 706; In this way, then carry out the charging of battery when unusual, step 707, promptly battery under the abnormal situation of temperature to the battery 70S that charges repeatedly; As not, then finish battery charge, step 708.Compared to Figure 1, charging mobile phone battery control method of the present invention is many under discontented pressure of cell voltage and the abnormal situation of battery temperature, the step of control battery charge.Corresponding in the process of charging mobile phone battery, its state also just accordingly how 11 (as showing among Fig. 8) an of charged state (CHARGE_ABNORML) when unusual.
Fig. 8 is the state machine diagram of the battery of mobile phone of the embodiment of the invention.Compare with prior art shown in Figure 2, according to the state of battery of mobile phone of the present invention many charged state when unusual (CHARGE_ABNORML) 11.Accordingly, in the process of control charging mobile phone battery with regard to many steps of changing mutually between the charged state 11 when unusual by other state, comprise: charge normal enabled state 1 and the conversion between the charged state 11 when unusual, shown in step 818, the step 820; Prepare the step that charge initiation state 3 goes to charged state 11 when unusual, shown in the step 817; Forbid that charged state 2 goes to the step of charged state 11 when unusual, shown in the step 819; Charged state 11 goes to and does not prepare charge initiation state 4 when unusual, shown in the step 822; Charged state 11 goes to and forbids charged state 2 when unusual, shown in the step 821.
As shown in table 3, when battery of mobile phone is in when unusual charged state 11,, then can changes battery over to and charge normal enabled state 1 if this moment, battery temperature recovered normal, mobile phone is charged normal step 820; If this moment since when unusual charging the battery of mobile phone 70S that charges repeatedly has been full of and makes cell voltage completely press, promptly produce eoc signal, then change over to and forbid charged state 2, stop charging, step 821; If pull up charger this moment, or the signal that other does not charge takes place, promptly enter and do not prepare charge initiation state 4, step 822.When mobile phone is in preparation charge initiation state 3, if detect to judge that the undesired and cell voltage of battery temperature is less than a unusual charging preset value, should charging unusually in the present embodiment, (annotate: strictness says that 3.5V is a critical value herein to preset value value 3.5V, voltage=when charging preset value unusually, battery is non-charged state), then change charged state 11 when unusual over to, step 817.When mobile phone is in when charging normal enabled state 3, judge the undesired and cell voltage of battery temperature less than 3.5V if detect, then change charged state 11 when unusual over to, step 818.When mobile phone is in when forbidding charged state 2, judge the undesired and cell voltage of battery temperature less than 3.5V if detect this moment, then change charged state 11 when unusual over to, step 819.Contrast with table 1, what the present invention also changed in the transfer process of battery of mobile phone state is, prepares charge initiation state 3 when battery of mobile phone is in, when only detecting the undesired and cell voltage of battery temperature and being not less than 3.5V, just change over to and forbid charged state 2, step 83.Charging normal enabled state 1, to go to the condition of forbidding charged state 2 can be that battery is full of, and EOC takes place, and perhaps detects the undesired and cell voltage of battery temperature and be not less than 3.5V, step 84.
| CALL | - | Step 816 connects with TA | - | - | - | Step 810 end of conversation | - | -- | |
| Charge_ Abnormal | - | - | |
EOC takes | Step | 822 TA disappears | -- | -- | -- |
Table 3
Fig. 9 is the schematic flow sheet of the embodiment of the invention.Fig. 9 has comprehensively expressed the information among Fig. 7 and Fig. 8, can more clearly understand charging mobile phone battery control method of the present invention.Charge normal enabled state 1, forbid charged state 2 and when unusual between the charged state 11 by judge battery temperature normally whether (step 901) changed.Battery is being full of electricity, and has triggered under the situation of eoc signal thus or the time of battery charge (step 902) during long enough (3 hours), enters and forbids charged state 2, stops charging.
Following mask body provides step and the possible under given conditions conversion that will carry out when battery of the present invention is in each state in charging process.
(1) system is in the initialization function status, forbids charging under this state, needs to carry out following steps:
Steps A 1, initialization of variable
Steps A 2, decision init state (STATE)
If TA is arranged, be converted to TA_STARTUP (step 81)
If there is not TA, be converted to NTA_STARTUP (step 86)
Steps A 3 drives the 150ms counter
When (2) system is in the TA_STARTUP state, forbid charging:
Step B1 drives 150ms timer (till TEMPSENSE being read obtain mean value 16 times)
Step B2 reads TEMPSENSE to carry out state exchange after 16 times;
Wherein, when temperature just often, be converted to CHARGE_ENABLE state (step 82);
Wherein, during the improper and cell voltage when temperature＞=3.5, be converted to CHARGE_DISABLE (step 83);
Wherein, during the improper and cell voltage when temperature＜3.5V, be converted to CHARGE_ABNORMAL (step 817);
When (3) system is in the CHARGE_ENABLE state, need to carry out following steps:
Step C1 begins charging;
Step C2, drive the 2sec timer (up to EOC takes place or temperature is improper and cell voltage＞=3.5 o'clock till);
EOC takes place in step 84 or temperature is improper and cell voltage＞=3.5 o'clock, conversion finger-like attitude CHARGE_DISABLE;
Wherein, detect eoc signal, when EOC takes place, go to CHARGE_DISABLE (step 841);
Wherein, detect the TEMPSENSE signal, go to CHARGE_DISABLE (step 842) during the improper and cell voltage when temperature＞=3.5;
Wherein, during the improper and cell voltage when temperature＜3.5V, be converted to CHARGE_ABNORMAL (step 817).
When (4) system was in the CHARGE_DISABLE state, system forbade charging, carried out following steps;
Step D1, drive the 2sec timer (up to than recharge voltage low also have temperature normal or temperature is improper and cell voltage＜during 3.5V till);
Step D2, up to than recharge voltage (being generally 4.1V) low till, detect the MVBAT signal;
Step D3, if lower, begin to detect the TEMPSENSE signal, till temperature is normal than recharging voltage, when going to the improper and cell voltage of CHARGE_ENABLE state (step 85) or temperature＜3.5V, go to CHARGE_ABNORMAL (step 819).
When (5) system was in the NTA_STARTUP state, system forbade charging, carried out following steps:
Step e 1 drives 150ms timer (till MVBAT being read obtain mean value 16 times)
Step e 2 is read the later Level that determines present battery to MVBAT pin signal 16 times, conversion battery of mobile phone state;
As conversing, then go to CALL state (step 88), otherwise change idle state (step 87) over to.
When (6) system is in the IDLE state, carry out following steps:
Step F 1 drives the 10sec timer;
Step F 2 detects the MVBAT signal and determines battery Level later on;
Whether step F 3 is in confirming to converse;
Then change CALL state (step 89) in this way over to.
When (7) system is in the CALL state
Step G1 drives the 3sec timer
Step G2 detects the MVBAT signal present battery Level of decision later on
Whether step G3 is in confirming to converse;
If not, then change IDLE state (step 810) over to.
When (8) system is in when unusual charged state
Step H1 begins charging;
Step H2, drive the 2sec timer (up to EOC takes place or temperature is improper, till the charging 70S)
Wherein, detect eoc signal,, then go to CHARGE_DISABLE (step 8211) as EOC takes place;
Wherein,, detect the TEMPSENSE signal if EOC do not take place, when temperature improper and repeatedly charging reach 70S and then go to CHARGE_DISABLE (step 8212);
Or normally then go to CHARGE_ENABLE (step 820) when temperature.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (14)
1, a kind of charge control method of battery of mobile phone, be applicable to that battery is installed in the situation of charging on the mobile phone, comprise the step that detects cell voltage and battery temperature, being used to control battery does not reach under full pressure, the normothermic situation at its voltage and charges, it is characterized in that, also be included in the step that cell voltage does not reach control battery charge under full pressure and the abnormal situation of temperature.
2, the charge control method of battery of mobile phone according to claim 1 is characterized in that, the described step that does not reach under full pressure and the abnormal situation of temperature the control battery charge at cell voltage further comprises:
Steps A judges whether battery temperature is undesired;
Step B in this way, judges further that then whether cell voltage is less than a unusual charging preset value;
Step C, as cell voltage be less than as described in unusual charging preset value, then control battery and carry out unusual time charging, described when unusual charging can be with the battery scheduled time length of charging repeatedly;
Step D is if cell voltage is not less than described unusual charging preset value, then complete charge.
3, the charge control method of battery of mobile phone according to claim 2 is characterized in that, described battery is a lithium ion battery; Described cell voltage does not reach full pressure and refers to cell voltage and be lower than 4.2V; The undesired battery temperature that refers to of described temperature is between between-10 ℃～-20 ℃ and/or between 50 ℃～60 ℃.
4, the charge control method of battery of mobile phone according to claim 3 is characterized in that, the unusual charging preset value of described cell voltage is 3.5V; A described scheduled time length is 70 seconds.
According to the charge control method of claim 2,3 or 4 described batteries of mobile phone, it is characterized in that 5, further comprise the setting up procedure of the preparation charging that a charging is preceding, the setting up procedure of described preparation charging specifically comprises:
Step e judges whether battery temperature is normal;
Step F in this way, then enters and charges normal enabled state, and battery can charge normal;
Step G as not, then further judges that whether described cell voltage is less than described unusual charging preset value;
Step H in this way less than unusual charging preset value, then enters described charged state when unusual, prepares battery is carried out charging when unusual;
Step I, as be not less than unusual charging preset value, then enter and forbid charged state.
6, the charge control method of battery of mobile phone according to claim 5 is characterized in that, the described battery that charges normal further comprises the step that an end charges normal, and specifically comprises:
When receiving the charging end signal, complete charge; Or
Judge battery temperature, when undesired and cell voltage is not less than unusual charging preset value when battery temperature, complete charge; Or
When undesired and cell voltage was less than unusual charging preset value when battery temperature, battery entered described charged state when unusual by described normal charging condition.
7, the charge control method of battery of mobile phone according to claim 6 is characterized in that, the described battery of forbidding charged state that is in comprises that further one reenters the step of charged state, specifically comprises:
Step J judges that whether cell voltage is less than recharging voltage;
Step K in this way, judges further whether battery temperature is normal;
Step L, as normally, then battery enters and charges normal enabled state;
Step M as undesired, judges further that then whether cell voltage is less than described unusual charging preset value;
Step N, in this way less than described preset value, then battery enters described charged state when unusual.
8, the charge control method of battery of mobile phone according to claim 7 is characterized in that, the described voltage that recharges is 4.1V.
9, the charge control method of battery of mobile phone according to claim 8 is characterized in that, describedly is in the battery of charged state when unusual and further comprises the step that finishes described charging when unusual, specifically comprises:
When receiving described charging end signal, complete charge; Or
When described when having reached described predefined time span when unusual the charging interval, complete charge; Or
When battery temperature recovers normal and the not enough normal charging condition that then reenters of cell voltage.
10, a kind of battery charge controller of battery of mobile phone, be applicable to that battery is installed in the situation of charging on the mobile phone, comprise that one is arranged on the cellular phone power supplies management integrated circuit on the mobile phone, one microprocessor, one flash memory and be arranged on the battery temperature detection module on the described flash memory and judge whether normal judge module of described battery temperature and battery voltage detection module, be used to control battery and do not reach full pressure at its voltage, charge under the normothermic situation, it is characterized in that, also comprise charge control module when unusual, be used for not reaching under full pressure and the abnormal situation of battery temperature and control battery charge at cell voltage.
11, the battery charge controller of battery of mobile phone according to claim 10 is characterized in that, described when unusual charge control module further comprise:
One unusual charging preset value judge module is used to judge that whether cell voltage is less than described unusual charging preset value;
One charging module when unusual is used under the situation of the undesired and described cell voltage of described battery temperature less than described unusual charging preset value described battery being charged repeatedly.
12, the battery charge controller of battery of mobile phone according to claim 11 is characterized in that, described battery is a lithium ion battery; Described cell voltage does not reach full pressure and refers to cell voltage and be lower than 4.2V; The undesired battery temperature that refers to of described temperature is between between-10 ℃～-20 ℃ and/or between 50 ℃～60 ℃.
13, the battery charge controller of battery of mobile phone according to claim 12 is characterized in that, the unusual charging preset value of described cell voltage is 3.5V; A described scheduled time length is 70 seconds.
14, according to the battery charge controller of claim 10,11,12 or 13 described batteries of mobile phone, it is characterized in that, realize the charging of described battery of mobile phone is controlled from respective battery voltage, the battery temperature signal of described cellular phone power supplies management integrated circuit by described microprocessor processes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100112648A CN100421330C (en) | 2005-01-26 | 2005-01-26 | Mobile telephone battery charging controlling method and apparatus thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100112648A CN100421330C (en) | 2005-01-26 | 2005-01-26 | Mobile telephone battery charging controlling method and apparatus thereof |
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| CN1812220A true CN1812220A (en) | 2006-08-02 |
| CN100421330C CN100421330C (en) | 2008-09-24 |
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| CNB2005100112648A Expired - Fee Related CN100421330C (en) | 2005-01-26 | 2005-01-26 | Mobile telephone battery charging controlling method and apparatus thereof |
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| CN101795014A (en) * | 2010-04-12 | 2010-08-04 | 中兴通讯股份有限公司 | Device and method for mobile terminal to supply power to external equipment |
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| US5504416A (en) * | 1993-12-15 | 1996-04-02 | Unitrode Corporation | Battery charger circuit including battery temperature control |
| US5705915A (en) * | 1997-03-03 | 1998-01-06 | Motorola, Inc. | Method for charging a battery |
| FR2849298B1 (en) * | 2002-12-20 | 2005-05-06 | Cit Alcatel | DEVICE FOR MONITORING THE CHARGE STATE, AT CONSTANT VOLTAGE, OF A BATTERY ASSEMBLY WITH SECONDARY ELECTROCHEMICAL GENERATORS |
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