CN101140302A - Detecting device of battery voltage reference position and detecting method thereof - Google Patents
Detecting device of battery voltage reference position and detecting method thereof Download PDFInfo
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- CN101140302A CN101140302A CNA2006101275011A CN200610127501A CN101140302A CN 101140302 A CN101140302 A CN 101140302A CN A2006101275011 A CNA2006101275011 A CN A2006101275011A CN 200610127501 A CN200610127501 A CN 200610127501A CN 101140302 A CN101140302 A CN 101140302A
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Abstract
A battery voltage reference position sensing device and a sensing method utilize an analog- to-digital converter) or a (digital-to-analog converter) to accurately sense battery voltage reference position. In a practical case, the sensing device comprises a digital-to-analog converter, a comparison circuit and a microprocessor. Wherein, the digital-to-analog converter outputs a plurality of reference positions according to a set signal. The comparison circuit compares an output battery voltage and these reference positions and outputs a comparison signal. The microprocessor judges the battery voltage reference position according to the comparison signal.
Description
Technical field
What the present invention relates to is a kind of detecting of battery voltage reference position, refers to a kind of device and method that utilizes analog to digital converter (analog-to-digital converter) or digital to analog converter (digital-to-analog converter) to detect battery voltage reference position especially.
Background technology
In portable electronic installation, as digital camera, mobile computer, mobile phone or the like, battery is indispensable assembly.Yet the voltage quasi position that battery is exported can increase and downslide gradually along with battery service time.May be by the assembly in electronic installation and cause damage because of undertension that battery provided, can design one overlap preventing mechanism (as automatic shutdown) in the general electronic installation, it can hang down at the voltage quasi position that battery provided when a minimum allowable value and start, to avoid damaging electronic package.
Fig. 1 is the circuit diagram of existing detecting battery voltage reference position.Among the figure, be by a voltage source V
DdAnd divider resistance R
1, R
2And R
3, produce three the accurate position of different references V
1, V
2And V
3, it is interval that it can form four accurate positions, promptly greatly at V
1, V
1～V
2, V
2～V
3And it is little at V
3Utilize three comparers 11,12 and 13 again, respectively with the output voltage V of battery
BATCompare with reference to accurate position with these three, can learn just that by comparative result the output voltage position of current battery is interval in which accurate position.Fig. 1 be with three be example with reference to accurate position, in fact also can use more divider resistance and comparer, more interval to produce with reference to accurate position and accurate position.
Yet the circuit of Fig. 1 need use a plurality of comparers and divider resistance, and hardware cost is higher, and if will produce the accurate position of accurate reference, the divider resistance value needs and can accurately control.By be subjected to factor affecting such as processing procedure, temperature easily in resistance value, be difficult for accurately control, therefore the circuit of Fig. 1 is difficult to accurately detect the voltage quasi position of battery, related to whether having hanged down in the accurate position of battery in the just erroneous judgement easily of minimum allowable value, cause too early or spend evening to start preventing mechanism, and influence the usefulness of electronic installation or even cause assembly to damage.In addition, in Fig. 1 circuit,, need adjust the divider resistance value from hardware circuit and just can reach, also quite inconvenience on real the work if will adjust with reference to accurate position.
Summary of the invention
Therefore, a purpose of the present invention is to propose a kind of arrangement for detecting and method for detecting thereof of battery voltage reference position, can accurately detect the voltage quasi position of battery, so can avoid the erroneous judgement of the preventing mechanism of electronic installation.
Another object of the present invention, be to propose a kind of arrangement for detecting and method for detecting thereof of battery voltage reference position, the analog to digital converter or the digital to analog converter that can utilize the Digital System Processor (digital signal processor) of electronic installation originally to have are detected, to save hardware cost.
A further object of the present invention is to propose a kind of arrangement for detecting and method for detecting thereof of battery voltage reference position, and the used accurate position of reference voltage is carried out elasticity and set in the time of can be to detecting, and need not adjust hardware again when setting.
In one embodiment, the arrangement for detecting of battery voltage reference position of the present invention comprises: an analog to digital converter, in order to a output voltage, export the digital signal of a correspondence according to a battery; And a microprocessor, be coupled to described analog to digital converter, in order to according to described digital signal, judge a voltage quasi position of described battery.
In another embodiment, the arrangement for detecting of battery voltage reference position of the present invention comprises: a digital to analog converter, in order to according to a setting signal, export a plurality of with reference to accurate position; One comparator circuit is coupled to a battery and described digital to analog converter, and in order to an output voltage and the accurate position of more described reference of more described battery, output one is signal relatively; And a microprocessor, be coupled to described comparator circuit, in order to according to described relatively signal, judge a voltage quasi position of described battery.
In an embodiment again, the method for detecting of battery voltage reference position of the present invention comprises: the digital signal that an output voltage of a battery is converted to a correspondence; An and voltage quasi position of judging described battery according to described digital signal.
In another embodiment, the method for detecting of battery voltage reference position of the present invention comprises: a plurality of with reference to accurate position according to setting signal output; Relatively an output voltage of a battery and more described reference are accurate, and output one is signal relatively; An and voltage quasi position of judging described battery according to described relatively signal.
Description of drawings
Fig. 1 is the circuit diagram of existing detecting battery voltage reference position.
Fig. 2 A is the synoptic diagram of first embodiment of the arrangement for detecting of battery voltage reference position of the present invention.
Fig. 2 B is the synoptic diagram of second embodiment of the arrangement for detecting of battery voltage reference position of the present invention.
Fig. 3 is the synoptic diagram of the 3rd embodiment of the arrangement for detecting of battery voltage reference position of the present invention.
Fig. 4 is the process flow diagram of first embodiment of the method for detecting of battery voltage reference position of the present invention.
Fig. 5 is the process flow diagram of second embodiment of the method for detecting of battery voltage reference position of the present invention.
11,12,13, the 304-comparer description of reference numerals:; 14,21,31-battery; 2a, 2b, 3-electronic installation; 20a, 20b, 30-arrangement for detecting; The 201-analog to digital converter; 202,302-microprocessor; 203,303-display unit; The 204-bleeder circuit; The 301-digital to analog converter; The flow process of first embodiment of the method for detecting of 41～45-battery voltage reference position; The flow process of second embodiment of the method for detecting of 51～56-battery voltage reference position.
Embodiment
Fig. 2 A is the synoptic diagram of first embodiment of the arrangement for detecting of battery voltage reference position of the present invention.Among the figure, arrangement for detecting 20a be the position in an electronic installation 2a, and comprise an analog to digital converter 201, a microprocessor 202 and a display unit 203.Analog to digital converter 201 is batteries 21 that are coupled to electronic installation 2a, the aanalogvoltage signal of battery 21 outputs can be converted to the digital signal output of a correspondence.Microprocessor 202 is to be coupled to analog to digital converter 201, can be according to described digital signal, judge the voltage quasi position that battery 21 is present, and the accurate position signal of exporting a correspondence is to display unit 203.Microprocessor 202 can carry out the judgement of the accurate position of aforesaid voltage by carrying out a firmware program (firmwareprogram).Moreover, if microprocessor 202 judges that described voltage quasi position hangs down at a critical value (threshold), then start the guard process of electronic installation 2a, as automatic shutdown or enter and await orders etc.This critical value is the minimum allowable value of the voltage quasi position of battery 21, so has hanged down in this value the 21 present accurate positions of output if microprocessor 202 is judged battery, just needs to start guard process, avoids damaging with the intraware of protection electronic installation 2a.In addition, the accurate position signals that 203 of display units are exported according to microprocessor 202 show the voltage quasi position that battery 21 is present.For example, an accurate position signal itself is promptly represented a voltage lattice number, and 203 of display units are shown in this voltage lattice digital display on one screen.
Below with an example running of the arrangement for detecting 20a of Fig. 2 A is described.Suppose that analog to digital converter 201 is 8, and be limited to 3.3V in the input, then work as the output voltage V of battery 21
BATDuring for 3V, analog to digital converter 201 can be with V
BATBeing converted to binary value 11101000 (is 3*2
8/ 3.3 ≈ 232 (decimal system)=11101000 (scale-of-two)).Then, microprocessor 202 can be carried out the firmware program, to carry out the judgement of voltage quasi position according to this binary value.For example, the firmware program can be set binary value earlier, and to set certain binary value be critical value, so, the binary value that microprocessor 202 just can be produced according to analog to digital converter 201, the accurate position signal (its representative voltage lattice number) that output is corresponding also can compare binary value and the critical value that is produced, and whether starts guard process with decision.
Fig. 2 B is the synoptic diagram of second embodiment of the arrangement for detecting of battery voltage reference position of the present invention.Among Fig. 2 B, arrangement for detecting 20b is that the position is in an electronic installation 2b, and compare with the arrangement for detecting 20a of Fig. 2 A, arrangement for detecting 20b has comprised a bleeder circuit 204 more, it is coupled between battery 21 and the analog to digital converter 201, can export a dividing potential drop signal to analog to digital converter 201 according to the output voltage of battery 21, analog to digital converter 201 then is converted to described dividing potential drop signal corresponding digital signal output.The running of the remainder of Fig. 2 B then with Fig. 2 category-A seemingly, seldom give unnecessary details herein.The usefulness that Fig. 2 B increases bleeder circuit 204 is intended to, in some cases, the output voltage of battery 21 may exceed 201 receptible upper limits of analog to digital converter, and reduces the voltage quasi position that inputs to analog to digital converter 201 by bleeder circuit 204, just can avoid the problems referred to above.Shown in Fig. 2 B, bleeder circuit 204 is by resistance R
4With R
5Form, therefore, the output voltage that the dividing potential drop signal of being exported is battery 21 is multiplied by R
5/ (R
4+ R
5).
In a preferred embodiment, electronic installation 2a and 2b comprise a Digital System Processor (figure does not show), and promptly comprise analog to digital converter 201 and microprocessor 202 in the described Digital System Processor.Change speech, arrangement for detecting 20a and 20b utilize the analog to digital converter and the microprocessor that had originally in the Digital System Processor to detect, and so, the use that can save circuit unit is to reduce hardware cost.
Fig. 3 is the synoptic diagram of the 3rd embodiment of the arrangement for detecting of battery voltage reference position of the present invention.Among the figure, arrangement for detecting 30 be the position in an electronic installation 3, and comprise a digital to analog converter 301, a microprocessor 302, a display unit 303 and a comparer 304, described comparer 304 also has an analog to digital converter.Digital to analog converter 301 is setting signals of being exported according to microprocessor 302, exports the accurate position of a plurality of references in regular turn to comparer 304.It is more described that can to form a plurality of accurate positions with reference to accurate position interval, for example, if more described be 2.0V, 2.3V and 2.5V with reference to accurate position, then can form interval, four accurate positions, promptly little at 2.0V, 2.0～2.3V, 2.3～2.5V and greatly at 2.5V.Comparer 304 can compare with reference to the output voltage of accurate position with a battery 31 of electronic installation 3 more described respectively, compare signal to export one, and microprocessor 302 is by comparing the height of signal reference position, can judge that the present voltage quasi position position of battery 31 is interval in which accurate position, and the accurate position signal of exporting a correspondence is to display unit 303.In this 3rd embodiment, microprocessor 302 can carry out the judgement of the accurate position of aforesaid voltage by carrying out a firmware program.In addition, microprocessor 302 also can to produce aforesaid setting signal, be set the accurate position of required reference by carrying out a firmware program.That is, can adjust by the setting signal that microprocessor 302 execution firmware programs are produced with reference to the height of accurate position.So, just can directly utilize firmware to come elasticity to set, and need not adjust hardware with reference to accurate position.
Moreover, in the accurate position of more described reference that digital to analog converter 301 is exported, can comprise one as the accurate position of the reference of critical value.The meaning of critical value representative and aforementioned first embodiment are similar herein.If microprocessor 302, judges that battery 31 present voltage quasi positions hang down in critical value by the comparison signal of comparer 304 outputs, then start a guard process of electronic installation 3, as automatic shutdown or enter and await orders etc.In addition, the accurate position signals that 303 of display units are exported according to microprocessor 302 show the voltage quasi position that battery 31 is present.For example, in the accurate position of above-mentioned reference is under the situation of 2.0V, 2.3V and 2.5V, if it is interval with its formed four accurate positions, be little at 2.0V, 2.0～2.3V, 2.3～2.5V and greatly at 2.5V, represent the voltage lattice number of space, lattice, two lattice and full lattice respectively, then accurate position signal can be represented the present pairing voltage lattice of the voltage quasi position number of battery 31, and display unit 303 then is shown in this voltage lattice digital display on one screen.For example, if battery 31 present output voltages are 2.4V, then via the comparative result of comparer 304, can learn described present output voltage be the position between 2.3～2.5V, so display unit 303 can show the voltage lattice number of two lattice.
In a preferred embodiment, electronic installation 3 comprises a Digital System Processor (figure does not show), and promptly comprises digital to analog converter 301 and microprocessor 302 in the described Digital System Processor.Change speech, arrangement for detecting 30 is to utilize the digital to analog converter and the microprocessor that had originally in the Digital System Processor to detect, and so, the use that can save circuit unit is to reduce hardware cost.
Fig. 4 is the process flow diagram of first embodiment of the method for detecting of battery voltage reference position of the present invention.This method for detecting is to be used in an electronic installation, and described electronic installation comprises a battery and a Digital System Processor, and described Digital System Processor comprises an analog to digital converter and a microprocessor.As shown in Figure 4, this flow process comprises the following step:
Step 41: the digital signal that the output voltage of battery is converted to a correspondence;
Step 42: judge the voltage quasi position that described battery is present according to described digital signal;
Step 43: export position signal surely according to described voltage quasi position;
Step 44: show described voltage quasi position according to described accurate position signal; And
Step 45:, start a guard process of electronic installation if described voltage quasi position hangs down in a critical value.
Fig. 5 is the process flow diagram of second embodiment of the method for detecting of battery voltage reference position of the present invention.This method for detecting is to be used in an electronic installation, and described electronic installation comprises a battery and a Digital System Processor, and described Digital System Processor comprises a digital to analog converter and a microprocessor.As shown in Figure 5, this flow process comprises the following step:
Step 51: a plurality of with reference to accurate position according to setting signal output;
Step 52: relatively the output voltage of battery and more described reference are accurate, and output one is signal relatively;
Step 53: the voltage quasi position of judging described battery according to described relatively signal;
Step 54: export position signal surely according to described voltage quasi position;
Step 55: show described voltage quasi position according to described accurate position signal; And
Step 56:, start a guard process of electronic installation if described voltage quasi position hangs down in a critical value.
The above only is preferred embodiment of the present invention, only is illustrative for the purpose of the present invention, and nonrestrictive.Those skilled in the art is understood, and can carry out many changes to it in the spirit and scope that claim of the present invention limited, revise, even equivalence, but all will fall within the scope of protection of the present invention.
Claims (10)
1. the arrangement for detecting of a battery voltage reference position is characterized in that, it comprises:
One analog-to-digital converter in order to the output voltage according to a battery, is exported the digital signal of a correspondence; And
One microprocessor is coupled to described analog-to-digital converter, in order to according to described digital signal, judges a voltage quasi position of described battery.
2. arrangement for detecting as claimed in claim 1 is characterized in that, described battery is to be used in an electronic installation that comprises a Digital System Processor, and described Digital System Processor is to comprise described analog-to-digital converter and described microprocessor.
3. arrangement for detecting as claimed in claim 1 is characterized in that, more comprises:
One display unit is coupled to described microprocessor, in order to a signal surely of exporting at described voltage quasi position according to described microprocessor correspondence, shows the described voltage quasi position of described battery.
4. arrangement for detecting as claimed in claim 1 is characterized in that, more comprises:
One bleeder circuit is coupled between described battery and the described analog-to-digital converter, in order to the described output voltage according to described battery, exports a dividing potential drop signal to described analog-to-digital converter;
Wherein, described analog-to-digital converter is the digital signal that produces described correspondence according to described dividing potential drop signal.
5. the arrangement for detecting of a battery voltage reference position is characterized in that, it comprises:
One digital to analog converter in order to according to a setting signal, is exported a plurality of with reference to accurate position;
One comparator circuit is coupled to a battery and described digital to analog converter, and in order to an output voltage and the accurate position of more described reference of more described battery, output one is signal relatively; And
One microprocessor is coupled to described comparator circuit, in order to according to described relatively signal, judges a voltage quasi position of described battery.
6. arrangement for detecting as claimed in claim 5 is characterized in that, described battery is to be used in an electronic installation that comprises a Digital System Processor, and described Digital System Processor is to comprise described digital to analog converter and described microprocessor.
7. arrangement for detecting as claimed in claim 5 is characterized in that, described microprocessor is to carry out a firmware program, to produce described setting signal to described digital to analog converter.
8. arrangement for detecting as claimed in claim 5 is characterized in that, more comprises:
One display unit is coupled to described microprocessor, in order to a signal surely of exporting at described voltage quasi position according to described microprocessor correspondence, shows the described voltage quasi position of described battery.
9. the method for detecting of a battery voltage reference position is characterized in that, it comprises:
A plurality of according to setting signal output with reference to accurate position;
Relatively an output voltage of a battery and more described reference are accurate, and output one is signal relatively; And
Judge a voltage quasi position of described battery according to described relatively signal.
10. method for detecting as claimed in claim 9, it is characterized in that, described battery is to be used in an electronic installation that comprises a Digital System Processor, described output is to carry out by a digital to analog converter of described Digital System Processor with reference to the step of accurate position, and described determining step is to carry out by a microprocessor of described Digital System Processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101275011A CN101140302A (en) | 2006-09-07 | 2006-09-07 | Detecting device of battery voltage reference position and detecting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101275011A CN101140302A (en) | 2006-09-07 | 2006-09-07 | Detecting device of battery voltage reference position and detecting method thereof |
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| CN101140302A true CN101140302A (en) | 2008-03-12 |
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| CNA2006101275011A Pending CN101140302A (en) | 2006-09-07 | 2006-09-07 | Detecting device of battery voltage reference position and detecting method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101900757B (en) * | 2009-05-25 | 2012-10-10 | 慧国(上海)软件科技有限公司 | Method and device for measuring direct current voltage |
| CN102998622A (en) * | 2011-09-08 | 2013-03-27 | 珠海格力电器股份有限公司 | Remote control and method and device for detecting battery voltage of remote control |
| CN106546920A (en) * | 2015-09-18 | 2017-03-29 | 东莞赛微微电子有限公司 | Cell-monitoring circuit and system |
| WO2017211193A1 (en) * | 2016-06-08 | 2017-12-14 | 比亚迪股份有限公司 | Voltage detection and determination circuit and power battery system having same |
| CN110350898A (en) * | 2019-07-16 | 2019-10-18 | 常州欣盛半导体技术股份有限公司 | A kind of carrier band chip start and close reset circuit and its working method |
| CN113852148A (en) * | 2021-08-26 | 2021-12-28 | 江苏东成工具科技有限公司 | Method for detecting charging voltage of battery pack |
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2006
- 2006-09-07 CN CNA2006101275011A patent/CN101140302A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101900757B (en) * | 2009-05-25 | 2012-10-10 | 慧国(上海)软件科技有限公司 | Method and device for measuring direct current voltage |
| CN102998622A (en) * | 2011-09-08 | 2013-03-27 | 珠海格力电器股份有限公司 | Remote control and method and device for detecting battery voltage of remote control |
| CN102998622B (en) * | 2011-09-08 | 2015-12-16 | 珠海格力电器股份有限公司 | The detection method of telepilot and cell voltage thereof and device |
| CN106546920A (en) * | 2015-09-18 | 2017-03-29 | 东莞赛微微电子有限公司 | Cell-monitoring circuit and system |
| CN106546920B (en) * | 2015-09-18 | 2024-02-06 | 广东赛微微电子股份有限公司 | Battery monitoring circuit and system |
| WO2017211193A1 (en) * | 2016-06-08 | 2017-12-14 | 比亚迪股份有限公司 | Voltage detection and determination circuit and power battery system having same |
| CN110350898A (en) * | 2019-07-16 | 2019-10-18 | 常州欣盛半导体技术股份有限公司 | A kind of carrier band chip start and close reset circuit and its working method |
| CN110350898B (en) * | 2019-07-16 | 2023-06-16 | 常州欣盛半导体技术股份有限公司 | Power-on and power-off reset circuit for carrier chip and working method thereof |
| CN113852148A (en) * | 2021-08-26 | 2021-12-28 | 江苏东成工具科技有限公司 | Method for detecting charging voltage of battery pack |
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