CN101436690B - Method, device and terminal equipment for determining charging time - Google Patents

Method, device and terminal equipment for determining charging time Download PDF

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Publication number
CN101436690B
CN101436690B CN200810182662XA CN200810182662A CN101436690B CN 101436690 B CN101436690 B CN 101436690B CN 200810182662X A CN200810182662X A CN 200810182662XA CN 200810182662 A CN200810182662 A CN 200810182662A CN 101436690 B CN101436690 B CN 101436690B
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charging
current
battery
electric
stage
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CN200810182662XA
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Chinese (zh)
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CN101436690A (en
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涂鸿雁
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华为终端有限公司
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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48Accumulators combined with arrangements for measuring, testing or indicating condition, e.g. level or density of the electrolyte
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44Methods for charging or discharging
    • 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 embodiment of the invention discloses a determination method, a determination device and terminal equipment for charging time. The determination method for the charging time comprises the following steps: a current charging current value, a currently applied electricity consumption current value and a current battery voltage are detected, and the current electric quantity of a battery is obtained according to the current battery voltage; and the remaining time needed by finishing the charging of the battery is determined according to the current charging current value, the currently applied electricity consumption current value, the current electric quantity of the battery, total electric quantity of the battery, and the ratio between the charging electric quantities at different stages of the charging of the battery and the total electric quantity of the battery, thereby realizing the determination of the remaining time needed by finishing the charging of the battery and prompting the remaining time.

Description

Definite method, device and the terminal equipment in a kind of charging interval
Technical field
The present invention relates to communication technical field, particularly definite method, device and the terminal equipment in a kind of charging interval.
Background technology
Terminal equipment such as mobile phone etc. are because portable and ambulant requirement adopts battery to power usually.After battery electric quantity is exhausted within a certain period of time, need the user that battery is charged to satisfy power demands.
Prior art is by the voltage sample of uniform period, obtain current battery voltage, simultaneously according to cell voltage in the charging curve and battery electric quantity, and the mapping relations of battery electric quantity and charging lattice number, calculate acquisition LED (Light Emitting Diode by mapping, light-emitting diode) or the charging lattice number that shows of LCD (Liquid CrystalDisplay, LCD).
The battery electric quantity that prior art has only been charged to user prompt roughly.Being full of how many lattice battery electric quantities with the last demonstration of LCD is example: terminal equipment manufacturer is divided into 5 parts with battery electric quantity, the battery electric quantity that the user comes estimating battery to fill by the lattice number of observing charged interface (shutdown charging) or charging lattice number (start charging) and showing is estimated according to user's oneself conjecture battery electric quantity is full of the probably required time.In fact, though battery electric quantity is divided into 5 parts, the electric weight of each part representative is not impartial, and the charging current in the middle of the charging process neither steady state value, so the charging interval that the user estimates is uncertain.
Summary of the invention
The embodiment of the invention provides definite method, device and the terminal equipment in a kind of charging interval, to be defined as the required time of battery charge.
For achieving the above object, the embodiment of the invention provides definite method in a kind of charging interval on the one hand, comprising:
Detect current charging current value, the power consumption current value and the current battery voltage of current application, and obtain current battery electric quantity according to described current battery voltage;
According to described current charging current value, the power consumption current value AC of described current application, described current battery electric quantity C and the total electric weight TC of battery, and the ratio of the charge capacity of battery charge different phase and the total electric weight of described battery, be defined as described battery and finish required T remaining time of charging, be specially:
(1) during cell voltage<3.2V, charging is in the trickle stage, i.e. first charging stage, current charging current value is X, the ratio of the charge capacity of first charging stage and the total electric weight of described battery is M1, the ratio of the charge capacity of second charging stage and the total electric weight of described battery is M2, and the ratio of the charge capacity of the 3rd charging stage and the total electric weight of described battery is M3
T = TC × M 1 - C X - AC + TC × M 2 Y ′ - AC + TC × M 3 Z ′ - AC ,
Wherein, Y ' is the charging current preset value of second charging stage, and Z ' is the charging current preset value of the 3rd charging stage;
(2) during 3.2V≤cell voltage<4.2V, charging is in constant-current phase, i.e. second charging stage, current charging current value is Y,
T = TC × M 2 - C Y - AC + TC × M 3 Z ′ - AC ;
(3) during 4.2V≤cell voltage<4.225V, charging is in constant-voltage phase, i.e. the 3rd charging stage, current charging current value is Z,
T = TC × M 3 Z - AC ;
(4) during cell voltage 〉=4.225V, battery electric quantity is full, stops charging.。
Description of drawings
On the other hand, the embodiment of the invention also provides definite device in a kind of charging interval, comprising:
The charging current detection module is used to detect current charging current value;
The power consumption current detection module is used to detect the power consumption current value of current application;
The battery voltage detection module is used to detect current battery voltage;
Battery electric quantity obtains module, is used for obtaining current battery electric quantity according to the detected current battery voltage of described battery voltage detection module;
Embodiment
The charging interval determination module, be used for obtaining current battery electric quantity C and the total electric weight TC of battery that module obtains according to the detected current charging current value of described charging current detection module, the power consumption current value AC of the detected current application of described power consumption current detection module, described battery electric quantity, and the ratio of the charge capacity of battery charge different phase and the total electric weight of described battery, be defined as described battery and finish required T remaining time of charging, be specially:
(1) during cell voltage<3.2V, charging is in the trickle stage, i.e. first charging stage, current charging current value is X, the ratio of the charge capacity of first charging stage and the total electric weight of described battery is M1, the ratio of the charge capacity of second charging stage and the total electric weight of described battery is M2, and the ratio of the charge capacity of the 3rd charging stage and the total electric weight of described battery is M3
T = TC × M 1 - C X - AC + TC × M 2 Y ′ - AC + TC × M 3 Z ′ - AC ,
Wherein, Y ' is the charging current preset value of second charging stage, and Z ' is the charging current preset value of the 3rd charging stage;
(2) during 3.2V≤cell voltage<4.2V, charging is in constant-current phase, i.e. second charging stage, current charging current value is Y,
T = TC × M 2 - C Y - AC + TC × M 3 Z ′ - AC ;
(3) during 4.2V≤cell voltage<4.225V, charging is in constant-voltage phase, i.e. the 3rd charging stage, current charging current value is Z,
T = TC × M 3 Z - AC ;
(4) during cell voltage 〉=4.225V, battery electric quantity is full, stops charging.。
On the one hand, the embodiment of the invention also provides a kind of terminal equipment, comprises definite device in above-mentioned a kind of charging interval again.
Compared with prior art, the embodiment of the invention has the following advantages: the embodiment of the invention is according to the power consumption current value of current charging current value, current application, current battery electric quantity and the total electric weight of battery, and the ratio of the charge capacity of battery charge different phase and the total electric weight of battery, be defined as battery and finish the required remaining time of charging.Thereby realized being defined as battery and finished the required remaining time of charging.
In order to be illustrated more clearly in the technical scheme of the embodiment of the invention, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is definite method in a kind of charging interval of the embodiment of the invention;
Fig. 2 be in the charging process voltage, electric current concern schematic diagram;
Fig. 3 battery discharge curve synoptic diagram;
Fig. 4 is the structure chart of definite device in a kind of charging interval of the embodiment of the invention.
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is a part of embodiment of the present invention, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
The embodiment of the invention provides definite method in a kind of charging interval, can determine and is that battery is finished charging required remaining time to user prompt.
As shown in Figure 1, the definite method for a kind of charging interval of the embodiment of the invention comprises:
Step S101 detects current charging current value, the power consumption current value and the current battery voltage of current application, and obtains current battery electric quantity according to current battery voltage.
Wherein, obtain current battery electric quantity according to current battery voltage and be specifically as follows: according to current battery voltage, the mapping relations of inquiry cell voltage and battery electric quantity obtain current battery electric quantity.The mapping relations of cell voltage and battery electric quantity can be as shown in table 1.
Table 1
Sampling instant Cell voltage (mV) Battery electric quantity (mAh)
??10:48:24.0 ??4.1901 ??900.3
??10:48:54.0 ??4.1784 ??900
??11:08:54.0 ??4.1606 ??890
??11:29:04.0 ??4.1482 ??880
??… ??… ??…
For example: when detected cell voltage is 4.1784mV, question blank 1, can obtain current battery electric quantity is 900mAh.
After obtaining current battery electric quantity, can also point out this current battery electric quantity, when prompting, can point out the concrete numerical value of current battery electric quantity, also can point out the ratio of current battery electric quantity and the total electric weight of battery, can also both all point out.But the embodiment of the invention is not limited thereto, and the prompting mode that also can adopt other is to the current battery electric quantity of user prompt, for example: with the form of icon to the current battery electric quantity of user prompt.
Step S102, according to the power consumption current value of current charging current value, current application, current battery electric quantity and the total electric weight of battery, and the ratio of the charge capacity of battery charge different phase and the total electric weight of battery, be defined as battery and finish the required remaining time of charging.
Be defined as after battery finishes charging required remaining time, also can be prompted to the user this remaining time, in when prompting, can be to concrete value remaining time of user prompt, form that can also icon is that battery is finished the required remaining time of charging to user prompt.But the embodiment of the invention is not limited thereto, and also can adopt other the prompting mode should remaining time to user prompt.
When battery charge was in for first charging stage, current charging current value is X, the power consumption current value of current application is AC, current battery electric quantity is C, and the total electric weight of battery is TC, and the ratio of the charge capacity of first charging stage and the total electric weight of described battery is M1, the ratio of the charge capacity of second charging stage and the total electric weight of battery is M2, the ratio of the charge capacity of the 3rd charging stage and the total electric weight of battery is M3, when finishing charging and be T required remaining time for battery
Can determine
T = TC × M 1 - C X - AC + TC × M 2 Y ′ - AC + TC × M 3 Z ′ - AC - - - ( 1 )
Wherein, Y ' is the charging current preset value of second charging stage, and Z ' is the charging current preset value of the 3rd charging stage.
When battery charge was in for second charging stage, when current charging current value is Y, is defined as battery and finishes charging and be required remaining time:
T = TC × M 2 - C Y - AC + TC × M 3 Z ′ - AC - - - ( 2 )
Wherein, Z ' is the charging current preset value of the 3rd charging stage.
When battery charge was in for the 3rd charging stage, when current charging current value is Z, is defined as battery and finishes charging and be required remaining time:
T = TC × M 3 Z - AC - - - ( 3 )
Above-mentioned first charging stage can be the trickle stage, and second charging stage can be constant-current phase, and the 3rd charging stage can be constant-voltage phase.
As shown in Figure 2, the schematic diagram that concerns for the voltage in the charging process, electric current is specially:
(1) during cell voltage<3.2V, charging is in the trickle stage, i.e. first charging stage, charging current is 30mA;
(2) during 3.2V≤cell voltage<4.2V, charging is in constant-current phase, i.e. second charging stage, charging current is 750mA;
(3) during 4.2V≤cell voltage<4.225V, charging is in constant-voltage phase, i.e. the 3rd charging stage, charging current is 100mA.
(4) during cell voltage 〉=4.225V, battery electric quantity is full, stops charging.
Be that the battery of 1050mAh is an example with the total electric weight of battery below, definite method of a kind of remaining time of charging that the embodiment of the invention is provided is elaborated.
The battery discharge curve of supposing above-mentioned battery as shown in Figure 3, the charge capacity in trickle stage accounts for 3% of the total electric weight of battery, i.e. M1=3%; The charge capacity of constant-current phase accounts for 95% of the total electric weight of battery, i.e. M2=95%; The charge capacity of constant-voltage phase accounts for 2% of the total electric weight of battery, i.e. M3=2%.
When battery charge is in the different charging stages, is defined as battery and finishes charging and be specially required remaining time:
(1) cell voltage≤3.2V when promptly battery charge was in for first charging stage, is defined as battery and finishes charging and be specifically as follows required remaining time:
T = TC × 5 % - C X - AC + TC × 95 % Y ′ - AC + TC × 2 % Z ′ - AC - - - ( 4 )
(2) 3.2V≤cell voltage<4.2V when promptly battery charge was in for second charging stage, is defined as battery and finishes charging and be specifically as follows required remaining time:
T = TC × 95 % - C Y - AC + TC × 2 % Z ′ - AC - - - ( 5 )
(3) during 4.2V≤cell voltage<4.225V, when promptly battery charge was in for the 3rd charging stage, is defined as battery and finishes charging and be specifically as follows required remaining time:
T = TC × 2 % Z - AC - - - ( 6 )
In formula (4), formula (5) and the formula (6), the implication of each symbol is respectively:
A) T: for battery is finished the required remaining time of charging, unit: hour;
B) TC: the total electric weight of battery, unit: mAh;
C) C: battery electric quantity, unit: mAh;
D) X: the charging current of detected first charging stage, unit: mA;
E) Y: the charging current of detected second charging stage, unit: mA;
F) Z: the charging current of detected the 3rd charging stage, unit: mA;
G) AC: the power consumption electric current of current application, unit: mA;
I) Y ' is the charging current preset value of second charging stage;
J) Z ' is the charging current preset value of the 3rd charging stage.
Definite method in above-mentioned charging interval, according to the power consumption current value of current charging current value, current application, current battery electric quantity and the total electric weight of battery, and the ratio of the charge capacity of battery charge different phase and the total electric weight of battery, be defined as battery and finish the required remaining time of charging.And the embodiment of the invention is finished charging during required remaining time being defined as battery, the power consumption electric current of having considered current application is to finishing the charging influence of required remaining time, because the power consumption current value difference of different application, therefore terminal equipment is when carrying out different application, and the embodiment of the invention is determined, and to finish the required remaining time of charging for battery be different.
As shown in Figure 4, the structure chart for definite device in a kind of charging interval of the embodiment of the invention comprises:
Charging current detection module 41 is used to detect current charging current value;
Power consumption current detection module 42 is used to detect the power consumption current value of current application;
Battery voltage detection module 43 is used to detect current battery voltage;
Battery electric quantity obtains module 44, is used for obtaining current battery electric quantity according to battery voltage detection module 43 detected current battery voltage;
Charging interval determination module 45, be used for obtaining current battery electric quantity and the total electric weight of battery that module 44 obtains according to charging current detection module 41 detected current charging current values, the power consumption current value of power consumption current detection module 42 detected current application, battery electric quantity, and the ratio of the charge capacity of battery charge different phase and the total electric weight of battery, be defined as battery and finish the required remaining time of charging.
Wherein, battery electric quantity obtains module 44 and specifically is used for according to battery voltage detection module 43 detected current battery voltage, and the mapping relations of inquiry cell voltage and battery electric quantity obtain current battery electric quantity.
Definite device in this charging interval can also comprise:
Battery electric quantity reminding module 46 is used to point out battery electric quantity to obtain the current battery electric quantity that module 44 obtains.
Definite device in this charging interval can also comprise:
Charging interval reminding module 47 is used to point out that charging interval determination module 45 determines finishes the required remaining time of charging for battery.
In the embodiment of the invention, charging current detection module 41 detects current charging current value, power consumption current detection module 42 detects the power consumption current value of current application, battery voltage detection module 43 detects current battery voltage, and battery electric quantity obtains module 44 and obtains current battery electric quantity according to battery voltage detection module 43 detected current battery voltage.Particularly, battery electric quantity obtains module 44 according to battery voltage detection module 43 detected current battery voltage, and the mapping relations of inquiry cell voltage and battery electric quantity obtain current battery electric quantity.Battery electric quantity obtains the current battery electric quantity of module 44 acquisitions and is pointed out by battery electric quantity reminding module 46.When prompting, battery electric quantity reminding module 46 can be pointed out the concrete numerical value of current battery electric quantity, also can point out the ratio of current battery electric quantity and the total electric weight of battery, can also both all point out.But the embodiment of the invention is not limited thereto, and battery electric quantity reminding module 46 also can adopt other prompting mode to the current battery electric quantity of user prompt, for example: with the form of icon to the current battery electric quantity of user prompt.
Then, charging interval determination module 45 obtains current battery electric quantity and the total electric weight of battery that module 44 obtains according to charging current detection module 41 detected current charging current values, the power consumption current value of power consumption current detection module 42 detected current application, battery electric quantity, and the ratio of the charge capacity of battery charge different phase and the total electric weight of battery, be defined as battery and finish the required remaining time of charging.
When battery charge was in for first charging stage, current charging current value is X, the power consumption current value of current application is AC, current battery electric quantity is C, and the total electric weight of battery is TC, and the ratio of the charge capacity of first charging stage and the total electric weight of described battery is M1, the ratio of the charge capacity of second charging stage and the total electric weight of battery is M2, the ratio of the charge capacity of the 3rd charging stage and the total electric weight of battery is M3, when finishing charging and be T required remaining time for battery
Charging interval determination module 45 is defined as battery and finishes charging and be required remaining time:
T = TC × M 1 - C X - AC + TC × M 2 Y ′ - AC + TC × M 3 Z ′ - AC
Wherein, Y ' is the charging current preset value of second charging stage, and Z ' is the charging current preset value of the 3rd charging stage.
When battery charge was in for second charging stage, when current charging current value was Y, charging interval determination module 45 was defined as battery and finishes charging and be required remaining time:
T = TC × M 2 - C Y - AC + TC × M 3 Z ′ - AC
Wherein, Z ' is the charging current preset value of the 3rd charging stage.
When battery charge was in for the 3rd charging stage, when current charging current value was Z, charging interval determination module 45 was defined as battery and finishes charging and be required remaining time:
T = TC × M 3 Z - AC
Above-mentioned first charging stage can be the trickle stage, and second charging stage can be constant-current phase, and the 3rd charging stage can be constant-voltage phase.
Be defined as after battery finishes charging required remaining time at charging interval determination module 45, charging interval reminding module 47 is finished the required remaining time of charging to what user prompt charging interval determination module 45 was determined for battery.In when prompting, charging interval reminding module 47 can be to concrete value remaining time of user prompt, and form that can also icon is that battery is finished the required remaining time of charging to user prompt.But the embodiment of the invention is not limited thereto, and also can adopt other the prompting mode should remaining time to user prompt.
The embodiment of the invention also provides a kind of terminal equipment, comprises definite device in above-mentioned a kind of charging interval.This terminal equipment can be mobile phone, notebook computer or PDA (Personal Digital Assistant, personal digital assistant) etc.
The definite device and the terminal equipment in the charging interval that the embodiment of the invention provides can be defined as battery and finish charging required remaining time, and can point out battery current electric weight, and finish the required remaining time of charging for battery.
Above-mentioned module can be distributed in a device, also can be distributed in multiple arrangement.Above-mentioned module can be merged into a module, also can further split into a plurality of submodules.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by hardware, also can realize by the mode that software adds necessary general hardware platform.Based on such understanding, technical scheme of the present invention can embody with the form of software product, it (can be CD-ROM that this software product can be stored in a non-volatile memory medium, USB flash disk, portable hard drive etc.) in, comprise some instructions with so that computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, module in the accompanying drawing or flow process might not be that enforcement the present invention is necessary.
It will be appreciated by those skilled in the art that the module in the device among the embodiment can be distributed in the device of embodiment according to the embodiment description, also can carry out respective change and be arranged in the one or more devices that are different from present embodiment.The module of the foregoing description can be merged into a module, also can further split into a plurality of submodules.
The invention described above embodiment sequence number is not represented the quality of embodiment just to description.
More than disclosed only be several specific embodiment of the present invention, still, the present invention is not limited thereto, any those skilled in the art can think variation all should fall into protection scope of the present invention.

Claims (7)

1. definite method in a charging interval is characterized in that, comprising:
Detect current charging current value, the power consumption current value AC and the current battery voltage of current application, and obtain current battery electric quantity C according to described current battery voltage;
According to described current charging current value, the power consumption current value of described current application, described current battery electric quantity and the total electric weight TC of battery, and the ratio of the charge capacity of battery charge different phase and the total electric weight of described battery, be defined as described battery and finish required T remaining time of charging, be specially:
(1) during cell voltage<3.2V, charging is in the trickle stage, i.e. first charging stage, current charging current value is X, the ratio of the charge capacity of first charging stage and the total electric weight of described battery is M1, the ratio of the charge capacity of second charging stage and the total electric weight of described battery is M2, and the ratio of the charge capacity of the 3rd charging stage and the total electric weight of described battery is M3
T = TC × M 1 - C X - AC + TC × M 2 Y ′ - AC + TC × M 3 Z ′ - AC ,
Wherein, Y ' is the charging current preset value of second charging stage, and Z ' is the charging current preset value of the 3rd charging stage;
(2) during 3.2V≤cell voltage<4.2V, charging is in constant-current phase, i.e. second charging stage, current charging current value is Y,
T = TC × M 2 - C Y - AC + TC × M 3 Z ′ - AC ;
(3) during 4.2V≤cell voltage<4.225V, charging is in constant-voltage phase, i.e. the 3rd charging stage, current charging current value is Z,
T = TC × M 3 Z - AC ;
(4) during cell voltage 〉=4.225V, battery electric quantity is full, stops charging.
2. the method for claim 1 is characterized in that, describedly obtains current battery electric quantity according to described current battery voltage and specifically comprises:
According to described current battery voltage, the mapping relations of inquiry cell voltage and battery electric quantity obtain described current battery electric quantity.
3. definite device in a charging interval is characterized in that, comprising:
The charging current detection module is used to detect current charging current value;
The power consumption current detection module is used to detect the power consumption current value AC of current application;
The battery voltage detection module is used to detect current battery voltage;
Battery electric quantity obtains module, is used for obtaining current battery electric quantity C according to the detected current battery voltage of described battery voltage detection module;
The charging interval determination module, be used for obtaining current battery electric quantity C and the total electric weight TC of battery that module obtains according to the detected current charging current value of described charging current detection module, the power consumption current value AC of the detected current application of described power consumption current detection module, described battery electric quantity, and the ratio of the charge capacity of battery charge different phase and the total electric weight of described battery, be defined as described battery and finish required T remaining time of charging, be specially:
(1) during cell voltage<3.2V, charging is in the trickle stage, i.e. first charging stage, current charging current value is X, the ratio of the charge capacity of first charging stage and the total electric weight of described battery is M1, the ratio of the charge capacity of second charging stage and the total electric weight of described battery is M2, and the ratio of the charge capacity of the 3rd charging stage and the total electric weight of described battery is M3
T = TC × M 1 - C X - AC + TC × M 2 Y ′ - AC + TC × M 3 Z ′ - AC ,
Wherein, Y ' is the charging current preset value of second charging stage, and Z ' is the charging current preset value of the 3rd charging stage;
(2) during 3.2V≤cell voltage<4.2V, charging is in constant-current phase, i.e. second charging stage, current charging current value is Y,
T = TC × M 2 - C Y - AC + TC × M 3 Z ′ - AC ;
(3) during 4.2V≤cell voltage<4.225V, charging is in constant-voltage phase, i.e. the 3rd charging stage, current charging current value is Z,
T = TC × M 3 Z - AC ;
(4) during cell voltage 〉=4.225V, battery electric quantity is full, stops charging.
4. device as claimed in claim 3, it is characterized in that, described battery electric quantity obtains module and specifically is used for according to the detected current battery voltage of described battery voltage detection module, and the mapping relations of inquiry cell voltage and battery electric quantity obtain described current battery electric quantity.
5. device as claimed in claim 4 is characterized in that, also comprises:
The battery electric quantity reminding module is used to point out described battery electric quantity to obtain the current battery electric quantity that module obtains.
6. device as claimed in claim 3 is characterized in that, also comprises:
The charging interval reminding module is used to point out that described charging interval determination module determines finishes charging required remaining time for described battery.
7. a terminal equipment is characterized in that, comprises the definite device as any described a kind of charging interval of claim 3-6.
CN200810182662XA 2008-12-10 2008-12-10 Method, device and terminal equipment for determining charging time CN101436690B (en)

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CN200810182662XA CN101436690B (en) 2008-12-10 2008-12-10 Method, device and terminal equipment for determining charging time
PCT/CN2009/074814 WO2010066154A1 (en) 2008-12-10 2009-11-05 Charge time determining method, device and terminal device

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CN102195304B (en) * 2010-03-12 2014-07-02 联想(北京)有限公司 Method and device for managing service time of cell and portable computer
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