CN103424702B - A kind of method and electronic equipment identifying thickness battery - Google Patents
A kind of method and electronic equipment identifying thickness battery Download PDFInfo
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- CN103424702B CN103424702B CN201210162826.9A CN201210162826A CN103424702B CN 103424702 B CN103424702 B CN 103424702B CN 201210162826 A CN201210162826 A CN 201210162826A CN 103424702 B CN103424702 B CN 103424702B
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Abstract
The invention discloses a kind of method and the electronic equipment that identify thickness battery, this electronic equipment comprises the capacitive transducer, metering circuit and the primary processor that connect successively; Near battery place on the mainboard that capacitive transducer is arranged on electronic equipment; When the battery of different-thickness is installed in electronic equipment, metering circuit, according to the capacitance increase in the capacitive transducer detected, exports different magnitudes of voltage; The battery of the different-thickness installed in the magnitude of voltage identification electronic equipment that primary processor exports according to metering circuit.Adopt the present invention, institute's thin battery that uses or thick battery in electronic equipment can be identified, and then different drivers can be adopted to manage battery.
Description
Technical field
The present invention relates to the rechargeable battery technical field capable of circulation that electronic equipment uses, particularly relate to a kind of method and the electronic equipment that identify thickness battery.
Background technology
At present, adopt rechargeable battery capable of circulation as the portable electric appts of power supply, as mobile terminal, notebook computer, the market demand fast development of panel computer etc., and the function and application of these electronic equipments gets more and more, this just causes power consumption increasing, and the demand of equipment to battery capacity is increasing.But due to the restriction of existing battery technology, the capacity of battery is often directly proportional to the volume of battery.The electricity vitality and portability of equipment are difficult to satisfactory to both parties, this just cause a lot of electronic equipment to be furnished with two covers even more overlaps optional battery, in same device battery draw-in groove, during corresponding different demand, use the battery of different capabilities and volume instead.Such application brings some problems simultaneously, as calculated the identification of different capabilities battery and electricity and the problem such as electricity display.
Lithium battery has the advantages such as high stored energy, life-span long, lightweight and memory-less effect, has obtained in existing portable set and has used widely.MAh is the measurement unit of battery capacity, and specifically can be released to the sum of the outside electronics used in battery, the standard unit be converted into physically is exactly coulomb.The SI units of coulomb are the ampere second that electric current is taken advantage of in the time, i.e. 1mAh=0.001 ampere * 3600 seconds=3.6 ampere second=3.6 coulomb.
Existing electronic equipment, mainly contains the calculating that following three kinds of methods realize electricity:
1. direct cell voltage method for supervising: directly cell voltage method for supervising is simple; But the method precision lower (20%), and lack the available protecting to battery;
2. fuel cell modelling method: fuel cell modelling method improves the measuring accuracy (5%) of electricity effectively, is simple and easy to use, without the need to doing estimating for the first time of battery; But the foundation of tables of data is a complicated process, and also bad to the compatibility of the battery of different capabilities or type;
3. coulombmeter detection method: coulombmeter can the electric quantity change of accurate tracking battery, and precision can reach 1%; But coulombmeter exists the problem that battery is estimated for the first time, need to know rated capacity, current capacities and current current loss, and the precision of current resistor directly affects the precision of electricity.
At present, with coulombmeter detection method the most accurately with effective, the electronic equipments such as the intelligent mobile phone terminal of main flow and panel computer all adopt coulombmeter detection method mostly, but the electricity that coulombmeter detection method can only solve fixed capacity battery calculates and electricity display problem, the battery of corresponding different capabilities, coulombmeter detects rule cannot accurately calculate display electricity.Therefore, how to realize simply, identify that the battery of different capabilities becomes the current technical barrier needing to solve fast, accurately.
Summary of the invention
The technical matters that the present invention solves is to provide a kind of method and the electronic equipment that identify thickness battery, can identify institute's thin battery that uses or thick battery in electronic equipment, and then different drivers can be adopted to manage battery.
For solving the problems of the technologies described above, the invention provides a kind of electronic equipment identifying thickness battery, described electronic equipment comprises the capacitive transducer, metering circuit and the primary processor that connect successively; Near battery place on the mainboard that described capacitive transducer is arranged on described electronic equipment;
When the battery of different-thickness is installed in described electronic equipment, described metering circuit, according to the capacitance increase in the described capacitive transducer detected, exports different magnitudes of voltage;
The battery of the different-thickness installed in electronic equipment described in the magnitude of voltage identification that described primary processor exports according to described metering circuit.
Further, described capacitive transducer faces toward the maximum height of height higher than the battery of minimum thickness of described battery side;
When the battery of described different-thickness is installed in described electronic equipment, described capacitive transducer, according to the different battery lateralarea sensed, produces different capacitance increase.
Further, the thick battery of the battery of described different-thickness and thin battery;
Described primary processor, according to the threshold voltage arranged, judges that the magnitude of voltage that described metering circuit exports is high level or low level;
When the magnitude of voltage that described metering circuit exports is high level, judge that the battery installed in described electronic equipment is thick battery; When the magnitude of voltage that described metering circuit exports is low level, judge that the battery installed in described electronic equipment is thin battery.
Further, the input end of described metering circuit is connected with described capacitive transducer, and the output terminal of described metering circuit is connected to interrupt pin or the universaling I/O port of described primary processor;
Described primary processor, by judging the level state of described interrupt pin or universaling I/O port, judges that the magnitude of voltage that described metering circuit exports is high level or low level.
Further, described metering circuit specifically comprises the frequency-modulated generator, limiter, frequency discriminator and the amplifier that are connected successively.
Further, described primary processor also for, after identifying the battery of different-thickness, call corresponding power management module respectively, to the power supply of described electronic equipment carry out electricity calculating and/or electricity display.
Present invention also offers a kind of method identifying thickness battery, be applied to electronic equipment,
When the battery of different-thickness is installed in electronic equipment, the capacitance increase in the capacitive transducer that the mainboard being detected described electronic equipment by metering circuit is arranged near battery place, and export different magnitudes of voltage according to the different capacitance increase detected;
According to the battery of the different-thickness installed in electronic equipment described in the different magnitude of voltage identifications that described metering circuit exports.
Further, described capacitive transducer faces toward the maximum height of height higher than the battery of minimum thickness of described battery side;
When the battery of described different-thickness is installed in described electronic equipment, described capacitive transducer, according to the different battery lateralarea sensed, produces different capacitance increase.
Further, when the thick battery of battery of described different-thickness and thin battery, according to the threshold voltage arranged, judge that the magnitude of voltage that described metering circuit exports is high level or low level, and identify the battery of the different-thickness installed in described electronic equipment in such a way:
When the magnitude of voltage that described metering circuit exports is high level, judge that the battery installed in described electronic equipment is thick battery; When the magnitude of voltage that described metering circuit exports is low level, judge that the battery installed in described electronic equipment is thin battery.
Further, the output terminal of described metering circuit is connected to interrupt pin or the universaling I/O port of primary processor;
By judging the level state of described interrupt pin or universaling I/O port, judge that the magnitude of voltage that described metering circuit exports is high level or low level.
Further, described method also comprises:
After identifying the battery of different-thickness, call corresponding power management module respectively, electricity calculating and/or electricity display are carried out to the power supply of described electronic equipment.
Contrast with currently used method, the present invention program at least tool has the following advantages:
1. can be identified the battery of different-thickness in electronic equipment by capacitive transducer, for user provides multiple choices, improve the competitive edge of product in market;
2. pair different-thickness (capacity) battery carries out different electricity calculating and electricity display respectively;
3., the thin battery that if customer selecting capacity is less, complete machine cost can be reduced.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is capacitive transducer principle of work schematic diagram;
Fig. 2 is the riding position schematic diagram of the capacitive transducer of the embodiment of the present invention;
Fig. 3 is the schematic diagram of the metering circuit of the capacitive transducer of the embodiment of the present invention;
Fig. 4 is the composition schematic diagram of the metering circuit of the embodiment of the present invention.
Embodiment
For solving the technical matters existed in prior art, present embodiment provides a kind of method for identifying thickness battery in electronic equipment, adopts following scheme:
The mainboard of electronic equipment arranges capacitive transducer near battery place, and described capacitive transducer is connected with metering circuit;
When the battery of different-thickness is installed in electronic equipment, described metering circuit, according to the capacitance increase in the described capacitive transducer detected, exports different magnitudes of voltage;
The different magnitudes of voltage exported according to described metering circuit identify the battery of the different-thickness installed in described electronic equipment.
For making the object, technical solutions and advantages of the present invention clearly understand, hereinafter will be described in detail to embodiments of the invention by reference to the accompanying drawings.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combination in any mutually.
As known, capacitive transducer is a kind of sensor tested mechanical quantity being converted to capacitance variations.As shown in Figure 1, its ultimate principle is the change measured change being converted to sensing element electric capacity, then converts the change of electric capacity to electric signal output through metering circuit.From the angle of energy conversion, capacitive transducer is passive transducer, carries out amplifying and processing after needing to convert surveyed mechanical quantity to voltage or electric current.Displacement of the lines in mechanical quantity, angular displacement, interval, distance, thickness, stretching, compression, expansion, distortion etc. have the amount of close ties invariably with length; This tittle is all again carry out by length or lenth ratio the amount measured, and the mutual relationship of its measuring method is also very close.In addition, there is due to capacitance type sensor the features such as test specification is wide, highly sensitive, dynamic response fast, good stability, therefore, quite slow in the change of some mechanical quantities, and under the minimum condition of variation range, be comparatively suitable for adopting capacitance type sensor to detect.
As shown in Figure 2, in the present embodiment, on the mainboard 2 of mobile phone terminal back cover 1, place capacitive transducer 12 near the position of battery 20, such as, capacitive transducer 12 is arranged to the thickness face facing to battery 20.After battery 20 is put into, capacitive transducer 12 can experience pressure change, and the thickness of the different battery pressure be applied on capacitive transducer is different, and capacitive transducer can distinguish the pressure reduction that thin and thick battery produces completely.Therefore, capacitance increase (capacitance namely changed) is converted to voltage by its metering circuit.
Particularly, capacitive transducer can be arranged on the position facing to described battery side, and the height of capacitive transducer is higher than the maximum height (also namely thin battery thickness face can not cover capacitive transducer completely) of the battery of minimum thickness, like this, when the battery of different-thickness is installed in battery cavities, the battery lateralarea that capacitive transducer senses can be different, thus produce different capacitance increase.
Further, the design of battery cavities need consider dodging capacitive transducer.Such as, when putting into battery, as long as capacitive transducer senses that battery is just passable, and can not be interfered with by other structural member.
In addition, due to capacitance in capacitive transducer and capacitance variations value all very small, therefore, need to detect this small capacitance increment by means of metering circuit, and convert thereof into the voltage becoming single-valued function relation with it.
As shown in Figure 3, during capacitive transducer work, capacitance variations value exports corresponding voltage by metering circuit conversion.Like this, when battery loads after in battery cavities, battery is close to capacitive transducer, and pressure change experienced by capacitive transducer, and namely the output signal of its metering circuit occurs change in voltage.Wherein, when only there being the battery of two kinds of thickness, namely when thick battery and thin battery, due to the different-thickness that thick, thin battery have, its pressure produced is also by difference, and the voltage of output has dividing of height, and the height according to magnitude of voltage can judge used battery types.A kind of simple implementation is, can be judged that output voltage is as high level or low level, and then judge the battery of different-thickness by the threshold voltage set.
Meanwhile, the output terminal of metering circuit can be connected to interrupt pin or the universaling I/O port of primary processor.In electronic equipment start process, by judging the state of this interrupt pin or universaling I/O port, determining the capacity of battery used, enabling corresponding driver, select charging current and the electricity display of different battery capacities.
Further, the present invention program can also realize the battery identifying more kinds of different-thickness in electronic equipment: after battery cavities put into by the battery of different-thickness, the area of the battery side that capacitive transducer senses is different, such as, after small cell is put into, 1/3rd of capacitive transducer can be blocked; After medium size battery is put into, 1/2nd of capacitive transducer can be blocked; After large size battery is put into, 2/3rds of capacitive transducer can be blocked.The cell area sensed due to capacitive transducer is different, and the capacitance increase of generation is also different, and thus exportable different signal value (as magnitude of voltage), according to different signal value, can identify the battery of different-thickness.
Further, as shown in Figure 4, the concrete composition of metering circuit mainly comprises: frequency-modulated generator, limiter, frequency discriminator and amplifier.Wherein, capacitive transducer is as the part in alternator resonant loop.When input quantity causes electric capacity to change, the oscillation frequency of oscillator just changes; Frequency-modulated generator and limiter are used for change capacitance increase being converted to frequency, and the change of frequency can be converted to the change of amplitude by frequency discriminator, amplifier for amplifying amplitude signal so that processor judges low and high level.
These are only preferred case study on implementation of the present invention; be not limited to the present invention; the present invention also can have other various embodiments; when not deviating from the present invention's spirit and essence thereof; those of ordinary skill in the art can make various corresponding change and distortion according to the present invention, but these change accordingly and are out of shape the protection domain that all should belong to the claim appended by the present invention.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, and in some cases, step shown or described by can performing with the order be different from herein, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
Claims (11)
1. identify an electronic equipment for thickness battery, it is characterized in that, described electronic equipment comprises the capacitive transducer, metering circuit and the primary processor that connect successively; Near battery place on the mainboard that described capacitive transducer is arranged on described electronic equipment;
When the battery of different-thickness is installed in described electronic equipment, described metering circuit, according to the capacitance increase in the described capacitive transducer detected, exports different magnitudes of voltage;
The battery of the different-thickness installed in electronic equipment described in the magnitude of voltage identification that described primary processor exports according to described metering circuit;
Wherein, described capacitive transducer faces toward the maximum height of height higher than the battery of minimum thickness of described battery side.
2. electronic equipment as claimed in claim 1, is characterized in that,
When the battery of described different-thickness is installed in described electronic equipment, described capacitive transducer, according to the different battery lateralarea sensed, produces different capacitance increase.
3. electronic equipment as claimed in claim 1, is characterized in that,
The thick battery of battery of described different-thickness and thin battery;
Described primary processor, according to the threshold voltage arranged, judges that the magnitude of voltage that described metering circuit exports is high level or low level;
When the magnitude of voltage that described metering circuit exports is high level, judge that the battery installed in described electronic equipment is thick battery; When the magnitude of voltage that described metering circuit exports is low level, judge that the battery installed in described electronic equipment is thin battery.
4. electronic equipment as claimed in claim 3, is characterized in that,
The input end of described metering circuit is connected with described capacitive transducer, and the output terminal of described metering circuit is connected to interrupt pin or the universaling I/O port of described primary processor;
Described primary processor, by judging the level state of described interrupt pin or universaling I/O port, judges that the magnitude of voltage that described metering circuit exports is high level or low level.
5. electronic equipment as claimed in claim 4, is characterized in that,
Described metering circuit specifically comprises the frequency-modulated generator, limiter, frequency discriminator and the amplifier that are connected successively.
6. the electronic equipment as described in any one of claim 1,2,3,4 or 5, is characterized in that,
Described primary processor also for, after identifying the battery of different-thickness, call corresponding power management module respectively, to the power supply of described electronic equipment carry out electricity calculating and/or electricity display.
7. identify a method for thickness battery, be applied to electronic equipment, it is characterized in that,
When the battery of different-thickness is installed in electronic equipment, the capacitance increase in the capacitive transducer that the mainboard being detected described electronic equipment by metering circuit is arranged near battery place, and export different magnitudes of voltage according to the different capacitance increase detected;
According to the battery of the different-thickness installed in electronic equipment described in the different magnitude of voltage identifications that described metering circuit exports;
Wherein, described capacitive transducer faces toward the maximum height of height higher than the battery of minimum thickness of described battery side.
8. method as claimed in claim 7, is characterized in that,
When the battery of described different-thickness is installed in described electronic equipment, described capacitive transducer, according to the different battery lateralarea sensed, produces different capacitance increase.
9. method as claimed in claim 8, is characterized in that,
When the thick battery of battery of described different-thickness and thin battery, according to the threshold voltage arranged, judge that the magnitude of voltage that described metering circuit exports is high level or low level, and identify the battery of the different-thickness installed in described electronic equipment in such a way:
When the magnitude of voltage that described metering circuit exports is high level, judge that the battery installed in described electronic equipment is thick battery; When the magnitude of voltage that described metering circuit exports is low level, judge that the battery installed in described electronic equipment is thin battery.
10. the method as described in claim 7,8 or 9, is characterized in that,
The output terminal of described metering circuit is connected to interrupt pin or the universaling I/O port of primary processor;
By judging the level state of described interrupt pin or universaling I/O port, judge that the magnitude of voltage that described metering circuit exports is high level or low level.
11. methods as described in claim 7,8 or 9, it is characterized in that, described method also comprises:
After identifying the battery of different-thickness, call corresponding power management module respectively, electricity calculating and/or electricity display are carried out to the power supply of described electronic equipment.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210162826.9A CN103424702B (en) | 2012-05-22 | 2012-05-22 | A kind of method and electronic equipment identifying thickness battery |
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| CN201210162826.9A CN103424702B (en) | 2012-05-22 | 2012-05-22 | A kind of method and electronic equipment identifying thickness battery |
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| CN103424702B true CN103424702B (en) | 2016-02-10 |
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| WO2010034079A1 (en) * | 2008-09-29 | 2010-04-01 | Wilson Lee | Multi-chemistry battery charging system and method of identifying and improved charging technique for primary and secondary dry-cell batteries |
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| CN1222263A (en) * | 1996-06-11 | 1999-07-07 | 艾利森公司 | Appts. and method for identifying and charging batteries of different types |
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