CN105954684A - Cell electricity quantity detection method and device - Google Patents
Cell electricity quantity detection method and device Download PDFInfo
- Publication number
- CN105954684A CN105954684A CN201610364766.7A CN201610364766A CN105954684A CN 105954684 A CN105954684 A CN 105954684A CN 201610364766 A CN201610364766 A CN 201610364766A CN 105954684 A CN105954684 A CN 105954684A
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- Prior art keywords
- battery
- electric quantity
- sampling circuit
- voltage sampling
- battery electric
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16533—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application
- G01R19/16538—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies
- G01R19/16542—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies for batteries
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
- G01R31/3835—Arrangements for monitoring battery or accumulator variables, e.g. SoC involving only voltage measurements
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Tests Of Electric Status Of Batteries (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a cell electricity quantity detection method and a device. The method comprises steps that a cell electricity quantity detection event is detected, if any cell electricity quantity detection event is detected, a control signal for controlling conduction of a cell voltage sampling circuit is outputted; after the control signal is outputted, a voltage signal outputted by the cell voltage sampling circuit for representing the cell electricity quantity is acquired; the present cell electricity quantity is calculated according to the voltage signal. The invention further discloses a cell electricity quantity detection device. Through the method and the device, conduction and disconnection of the cell voltage sampling circuit can be controlled, so a leakage current of a voltage division resistor of the cell voltage sampling circuit can be reduced, and thereby the cell standby time is prolonged.
Description
Technical field
The present invention relates to electronic technology field, more particularly, to the detection method of a kind of battery electric quantity
And device.
Background technology
Along with the development of information technology, the application of various electronic equipments is more and more extensive, such as,
Portable phone, PDA, notebook computer, mobile phone etc..In these electronic equipments, by detection electricity
Cell voltage calculates the battery electric quantity of current residual, and is prompted to user, in order to user understands electricity
Remaining information.
But, along with electronic apparatus application is more and more extensive, user carries for electronic equipment stand-by time
Go out higher requirement.In the prior art, the mode of electric resistance partial pressure is generally used to detect battery electricity
Amount, so can cause the problem that always there is leakage current on divider resistance, cause the damage of battery electric quantity
Consumption is accelerated.It addition, generally carry out the detection of one-shot battery electricity every the fixing cycle, if the cycle
Arrange is oversize, and user can not understand the information of remaining battery electric quantity in time, and the cycle arranged is too
Short, can cause detecting excessively frequent, cause the waste of resource.
Accordingly, it would be desirable to improve prior art to solve at least one problem above-mentioned.
Summary of the invention
It is an object of the present invention to provide the new solution of a kind of battery electric quantity detection.
According to the first aspect of the invention, it is provided that the detection method of a kind of battery electric quantity.The method bag
Include:
Detection battery electric quantity detection event；
If be detected that any battery electric power detection event, then:
Output controls the control signal of battery voltage sampling circuit conducting；
After exporting described control signal, obtain the sign battery electricity of described battery voltage sampling circuit output
The voltage signal of amount；And
Current battery charge is calculated according to described voltage signal.
Preferably, when power-up initializing, output controls the control that described battery voltage sampling circuit disconnects
Signal processed.
Preferably, described battery electric quantity detection event include following at least one: the detection of battery electric quantity
Cycle exceedes threshold value；The screen state of electronic equipment is changed into active state by resting state；And use
Family inquiry battery level information.
Preferably, described battery electric quantity detection event includes that the detection cycle of battery electric quantity exceedes threshold value；
Described method also includes: adjust described threshold value according to calculated current battery charge.
According to the second aspect of the invention, it is provided that the detection device of a kind of battery electric quantity.This device bag
Include:
Control unit, for performing the detection method of above-mentioned battery electric quantity；And
Battery voltage sampling circuit, described battery voltage sampling circuit is for exporting to described control unit
Characterize the voltage signal of battery electric quantity；Described battery voltage sampling circuit is provided with switching device, described
The end that controls of switching device is used for receiving the control signal of described control unit output, with by described control
Signal processed controls conducting and the disconnection of described battery voltage sampling circuit.
Preferably, described battery voltage sampling circuit also includes the first resistance and the second resistance, described
One resistance, described second resistance and described switching device are connected in series in the positive pole of battery to be detected with negative
Between pole, described battery voltage sampling circuit is via between described first resistance and described second resistance
Dividing point exports described voltage signal.
Preferably, described switching device is arranged between described dividing point and described first resistance.
Preferably, described switching device is N-channel MOS pipe, and the control end of described switching device is institute
State the grid of metal-oxide-semiconductor.
Preferably, described battery voltage sampling circuit also includes diode, the negative pole of described diode with
The drain electrode of described metal-oxide-semiconductor connects, and the positive pole of described diode is connected with the source electrode of described metal-oxide-semiconductor.
Preferably, described battery voltage sampling circuit also includes bi-directional voltage stabilizing pipe, described bi-directional voltage stabilizing pipe
It is connected between grid and the source electrode of described metal-oxide-semiconductor.
Compared with prior art, according to detection method and the device of the battery electric quantity of the present invention, at needs
In the case of detection battery electric quantity, just control battery voltage sampling circuit conducting, thus reduce electric leakage
The generation of stream, reaches to save the purpose of battery electric quantity.Additionally, the inspection of the battery electric quantity according to the present invention
Survey method can also reach the inspection of conservative control battery electric quantity by the way of dynamically adjusting the detection cycle
Survey the purpose of number of times, thus battery electric quantity can be saved on the basis of meeting user's request further.
By detailed description to the exemplary embodiment of the present invention referring to the drawings, its of the present invention
Its feature and advantage thereof will be made apparent from.
Accompanying drawing explanation
Combined in the description and the accompanying drawing of the part that constitutes description shows the reality of the present invention
Execute example, and together with its explanation for explaining the principle of the present invention.
Fig. 1 is the flow chart of battery electricity detection method according to embodiments of the present invention.
Fig. 2 is the schematic block diagram of battery electric quantity checking device according to embodiments of the present invention.
Fig. 3 is the illustrative circuitry of another embodiment of the battery electric quantity checking device according to the present invention
Figure.
Detailed description of the invention
The various exemplary embodiments of the present invention are described in detail now with reference to accompanying drawing.It should also be noted that
Unless specifically stated otherwise, the parts that illustrate the most in these embodiments and step positioned opposite,
Numerical expression and numerical value do not limit the scope of the invention.
Description only actually at least one exemplary embodiment is illustrative below, never makees
For to the present invention and application thereof or any restriction of use.
May not beg in detail for technology, method and apparatus known to person of ordinary skill in the relevant
Opinion, but in the appropriate case, described technology, method and apparatus should be considered a part for description.
Shown here with in all examples discussed, any occurrence should be construed as merely example
Property rather than as limit.Therefore, other example of exemplary embodiment can have different
Value.
It should also be noted that similar label and letter represent similar terms, therefore, one in following accompanying drawing
A certain Xiang Yi the accompanying drawing of denier is defined, then need not it is carried out further in accompanying drawing subsequently
Discuss.
Fig. 1 is the flow chart of battery electricity detection method according to an embodiment of the invention.
As it is shown in figure 1, the method according to the invention comprises the steps:
Step S110, detection battery electric quantity detection event.
In the present invention, described battery electric quantity detection event refers to need detect battery electric quantity, with ought
Before remaining battery power information alert to user, such as, by sound or display reminding to user.
Such as, described battery electric quantity detection event include following at least one: the detection of battery electric quantity week
Phase exceedes threshold value；The screen state of electronic equipment is changed into active state by resting state；And user
Inquiry battery level information etc..
In one example, at set intervals, i.e. detect the cycle, detect one-shot battery electricity.Institute
State cycle that the threshold value in detection cycle can be set in advance as fixing or adjust the most dynamically
Whole.
In one example, described threshold value is adjusted according to calculated current battery charge.Such as,
First the threshold value in the detection cycle of battery electric quantity is used as default, e.g., detected one every 5 minutes
Primary cell electricity.When battery electric quantity is bigger, e.g., higher than the 80% of total battery electric quantity, by described threshold
Value is increased to 10 minutes.When battery electric quantity is less than the 10% of total battery electric quantity, described threshold value is reduced
It it is 3 minutes.In this way, can be before ensureing the information that user understands battery electric quantity in time
Put, reduce the number of times of detection battery electric quantity as far as possible, thus reduce the leakage during battery electric quantity detection
Electric current, thus extend the stand-by time of battery.
In another example, when the screen state of electronic equipment is changed into active state by resting state
In the case of, it is believed that there occurs that battery electric quantity detects event.Such as, the electronics in sports watch class sets
Standby, there is wrist of raising one's hand to light the function of screen.When screen is lit, need to show battery electric quantity.And shield
When curtain does not works, battery electric quantity can not be shown.Therefore, only change from the resting state not worked when screen
For light active state time, detect battery level information.Detection electricity can be reduced in this way
The number of times of pond electricity, thus reduce the generation probability of leakage current.
In another example, when user's active inquiry battery level information, just detect.Example
As, user's menu active inquiry battery electric quantity by electronic equipment.Described electronic equipment include but not
It is limited to mobile phone, notebook computer, panel computer etc..
Those skilled in the art is it should be appreciated that can also need to define multiple battery according to user
Electric power detection event.It addition, for different electronic equipments, because of its application target or occupation mode
Difference can also define different battery electric quantity detection events.
Alternatively, when power-up initializing, output controls the control that described battery voltage sampling circuit disconnects
Signal processed, i.e. gives tacit consent to and does not detect battery electric quantity, only when think there occurs battery electric quantity detection event time,
Just detection battery level information.
Step S120, detects any battery electric power detection event.
When the arbitrary defined battery electric quantity detection event of generation being detected, perform following steps to obtain
Take battery electric quantity.
Step S130, output controls the control signal of battery voltage sampling circuit conducting.
Described battery voltage sampling circuit characterizes the voltage signal of battery electric quantity for obtaining.Described voltage
Signal can be directly cell voltage, maybe can characterize the dividing potential drop of cell voltage.
Described control signal is for controlling being turned on or off of battery voltage sampling circuit.At an example
In, when described control signal is 1, control battery voltage sampling circuit conducting, when control signal is 0
Time, control battery voltage sampling circuit and disconnect.
Step S140, obtains the voltage letter characterizing battery electric quantity of described battery voltage sampling circuit output
Number.
In the case of battery voltage sampling circuit turns on, obtain the voltage signal characterizing battery electric quantity.
Step S150, calculates current battery charge according to described voltage signal.
In step S150, calculate the battery electric quantity of current residual according to acquired voltage signal.
Such as, the voltage signal of battery is converted to battery compartment number, and is shown to user.
After completing the detection of above-mentioned battery electric quantity, output control signal is adopted to control described cell voltage
Sample circuit disconnects.
As can be seen here, the method according to the invention think need to detect battery electric quantity time, just control electric
Cell voltage sampling conducting, thus effectively reduce the leakage current in battery voltage sampling circuit, extend
The stand-by time of battery.Additionally, dynamically adjust the inspection of battery electric quantity according to the information of current battery charge
The survey cycle can also reach the purpose that conservative control leakage current produces.
Present invention also offers the detection device of a kind of battery electric quantity.Fig. 2 shows according to the present invention real
Execute the schematic block diagram of the battery electric quantity checking device of example
As in figure 2 it is shown, this device includes: control unit 240, for performing above-mentioned battery electric quantity
Detection method, and battery voltage sampling circuit 200 (part shown in dotted line frame in Fig. 2).
Described battery voltage sampling circuit 200 is for characterizing battery electricity to the output of described control unit 240
The voltage signal of amount.Described battery voltage sampling circuit 200 is provided with switching device 230, described in open
The end 201 that controls closing device 230 is used for receiving the control signal of described control unit 240 output, with
Conducting and the disconnection of described battery voltage sampling circuit 200 is controlled by described control signal.
In one example, described battery voltage sampling circuit 200 also includes the first resistance (R1) 210
With the second resistance (R2) 220, described first resistance 210, described second resistance 220 and described switch
Device 230 is connected in series between the positive pole (Vbat) of battery to be detected and negative pole (ground connection), institute
State battery voltage sampling circuit 200 via between described first resistance 210 and described second resistance 220
Dividing point 202 export described voltage signal.
Described dividing point 202 can be arranged between described first resistance 210 and the second resistance 220
Position.Such as, described switching device 230 is arranged on described dividing point 202 and described first resistance 210
Between.In another example, described switching device 230 is arranged on described dividing point 202 and second
Between resistance 220.
Described switching device 230 is controlled switchtype, such as, metal-oxide-semiconductor, audion etc..Example
As, described switching device is N-channel MOS pipe, and the control end of described switching device is described metal-oxide-semiconductor
Grid.
Fig. 3 shows the signal electricity of another embodiment of the battery electric quantity checking device according to the present invention
Lu Tu.
In the embodiment shown in fig. 3, described switching device is N-channel MOS pipe, described derailing switch
The control end of part is the grid (G) of described metal-oxide-semiconductor.Described control unit is microprocessor unit (MCU).
The grid (G) of metal-oxide-semiconductor connects the universal input and output port (GPIO) of MCU to receive MCU output
Control signal.Dividing point connects the analog digital conversion port (ADC) of MCU.
In the embodiment shown in fig. 3, when the GPIO of MCU is output as 0, metal-oxide-semiconductor disconnects and (cutting
Only), the potential-divider network that now R1 and R2 is constituted can not normally work, so the ADC of MCU is defeated
Entering level is 0V, and now MCU can't detect battery electric quantity.
When the GPIO of MCU is output as 1, metal-oxide-semiconductor turns on, the dividing potential drop net that now R1 and R2 is constituted
Network can normally work, and the ADC incoming level of MCU is battery voltage signal after dividing potential drop, this
Time MCU be able to detect that battery electric quantity.After MCU gets the voltage signal of battery, turn through modulus
After changing, calculate the battery compartment number corresponding to battery electric quantity, to display to the user that battery level information.
In order to detect battery electric quantity accurately, within the precision 1% of resistance R1 and R2.Resistance R1 and
The resistance of R2 can be identical, it is also possible to differs.
Alternatively, described battery voltage sampling circuit also includes diode, the negative pole of described diode with
The drain electrode of described metal-oxide-semiconductor connects, and the positive pole of described diode is connected with the source electrode of described metal-oxide-semiconductor.Logical
Crossing connection diode is possible to prevent the source electrode of metal-oxide-semiconductor and drain electrode to connect and inverse time burn out metal-oxide-semiconductor, it is also possible to
When circuit has reverse induced potential, provide path to avoid reverse induced potential to hit for reverse induced potential
Wear metal-oxide-semiconductor.
Alternatively, described battery voltage sampling circuit also includes bi-directional voltage stabilizing pipe, described bi-directional voltage stabilizing pipe
It is connected between grid and the source electrode of described metal-oxide-semiconductor.
The detection device of the battery electric quantity according to the present invention can apply in electronic equipment to realize electricity
The battery electric quantity detection of subset.Described electronic equipment include but not limited to mobile phone, notebook computer,
Panel computer etc..
Having above-mentioned understanding, detection device based on the battery electric quantity shown in Fig. 3 is capable of described in Fig. 1
Detection method, thus the problem preventing from always there is leakage current in battery voltage sampling circuit.
The various embodiments described above all use the mode gone forward one by one to describe, identical similar portion between each embodiment
Dividing cross-reference, what each embodiment stressed is the difference with other embodiments,
But those skilled in the art is it should be understood that, the various embodiments described above can be used alone as required
Or it is used in combination.The embodiment of foregoing description is only illustrative, and wherein illustrates as separating component
Unit or module can be or may not be physically separate.
Being described above various embodiments of the present invention, described above is exemplary, and exhaustive
Property, and it is also not necessarily limited to disclosed each embodiment.At the model without departing from illustrated each embodiment
Enclose with spirit in the case of, many modifications and changes for those skilled in the art
Will be apparent from.The selection of term used herein, it is intended to explain the former of each embodiment best
Reason, reality are applied or to the technological improvement in market, or are made other ordinary skill of the art
Personnel are understood that each embodiment disclosed herein.The scope of the present invention be defined by the appended claims.
Claims (10)
1. a detection method for battery electric quantity, including:
Detection battery electric quantity detection event；
If be detected that any battery electric power detection event, then:
Output controls the control signal of battery voltage sampling circuit conducting；
After exporting described control signal, obtain the sign battery electricity of described battery voltage sampling circuit output
The voltage signal of amount；
Current battery charge is calculated according to described voltage signal.
Method the most according to claim 1, it is characterised in that described method also includes:
When power-up initializing, output controls the control signal that described battery voltage sampling circuit disconnects.
Method the most according to claim 1, it is characterised in that described battery electric quantity detection event
Including following at least one:
The detection cycle of battery electric quantity exceedes threshold value；
The screen state of electronic equipment is changed into active state by resting state；And,
User inquires about battery level information.
Method the most according to claim 3, it is characterised in that described battery electric quantity detection event
The detection cycle including battery electric quantity exceedes threshold value；Described method also includes:
Described threshold value is adjusted according to calculated current battery charge.
5. a detection device for battery electric quantity, including:
Control unit, for performing according to the method according to any one of claim 1-4；
Battery voltage sampling circuit, described battery voltage sampling circuit is for exporting to described control unit
Characterize the voltage signal of battery electric quantity；Described battery voltage sampling circuit is provided with switching device, described
The end that controls of switching device is used for receiving the control signal of described control unit output, with by described control
Signal processed controls conducting and the disconnection of described battery voltage sampling circuit.
Device the most according to claim 5, it is characterised in that described battery voltage sampling circuit
Also include the first resistance and the second resistance, described first resistance, described second resistance and described derailing switch
Part is connected in series between positive pole and the negative pole of battery to be detected, described battery voltage sampling circuit via
Dividing point between described first resistance and described second resistance exports described voltage signal.
Device the most according to claim 6, it is characterised in that described switching device is arranged on institute
State between dividing point and described first resistance.
Device the most according to claim 6, it is characterised in that described switching device is N-channel
Metal-oxide-semiconductor, the control end of described switching device is the grid of described metal-oxide-semiconductor.
Device the most according to claim 8, it is characterised in that described battery voltage sampling circuit
Also include that diode, the negative pole of described diode are connected with the drain electrode of described metal-oxide-semiconductor, described diode
Positive pole be connected with the source electrode of described metal-oxide-semiconductor.
Device the most according to claim 8, it is characterised in that described battery voltage sampling electricity
Road also include bi-directional voltage stabilizing pipe, described bi-directional voltage stabilizing pipe be connected to the grid of described metal-oxide-semiconductor and source electrode it
Between.
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|---|---|---|---|
| CN201610364766.7A CN105954684A (en) | 2016-05-27 | 2016-05-27 | Cell electricity quantity detection method and device |
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| CN201610364766.7A CN105954684A (en) | 2016-05-27 | 2016-05-27 | Cell electricity quantity detection method and device |
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| CN201610364766.7A Pending CN105954684A (en) | 2016-05-27 | 2016-05-27 | Cell electricity quantity detection method and device |
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Cited By (8)
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| CN106950505A (en) * | 2017-03-29 | 2017-07-14 | 百发动力（无锡）有限公司 | A kind of method that can be detected automatically to engine battery electricity |
| CN107703456A (en) * | 2017-09-25 | 2018-02-16 | 郑州云海信息技术有限公司 | A kind of button cell circuit for detecting and method for detecting |
| CN109143075A (en) * | 2018-07-16 | 2019-01-04 | 苏州朗捷通智能科技有限公司 | A kind of acquisition method and system of voltage |
| CN110254293A (en) * | 2019-07-04 | 2019-09-20 | 江西昌河汽车有限责任公司 | A kind of electric car low voltage control battery self-inspection cycle control system |
| CN110412476A (en) * | 2018-04-27 | 2019-11-05 | 深圳市理邦精密仪器股份有限公司 | Battery electric quantity checking device and method, portable medical device |
| CN112904216A (en) * | 2021-01-20 | 2021-06-04 | 惠州Tcl移动通信有限公司 | Battery electric quantity prompting method, system, storage medium and terminal equipment |
| CN113406509A (en) * | 2021-06-11 | 2021-09-17 | 浙江今日阳光新能源车业有限公司 | Electric vehicle electric quantity display method, electric vehicle instrument and computer storage medium |
| CN115542160A (en) * | 2022-12-05 | 2022-12-30 | 南京模砾半导体有限责任公司 | Battery virtual electricity detection device and method |
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| CN110254293A (en) * | 2019-07-04 | 2019-09-20 | 江西昌河汽车有限责任公司 | A kind of electric car low voltage control battery self-inspection cycle control system |
| CN112904216A (en) * | 2021-01-20 | 2021-06-04 | 惠州Tcl移动通信有限公司 | Battery electric quantity prompting method, system, storage medium and terminal equipment |
| CN113406509A (en) * | 2021-06-11 | 2021-09-17 | 浙江今日阳光新能源车业有限公司 | Electric vehicle electric quantity display method, electric vehicle instrument and computer storage medium |
| CN113406509B (en) * | 2021-06-11 | 2022-05-10 | 浙江今日阳光新能源车业有限公司 | Electric vehicle electric quantity display method, electric vehicle instrument and computer storage medium |
| CN115542160A (en) * | 2022-12-05 | 2022-12-30 | 南京模砾半导体有限责任公司 | Battery virtual electricity detection device and method |
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Application publication date: 20160921 |