CN103364735B - The accurate display packing of portable power source battery electric quantity and device - Google Patents
The accurate display packing of portable power source battery electric quantity and device Download PDFInfo
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- CN103364735B CN103364735B CN201310302641.8A CN201310302641A CN103364735B CN 103364735 B CN103364735 B CN 103364735B CN 201310302641 A CN201310302641 A CN 201310302641A CN 103364735 B CN103364735 B CN 103364735B
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Abstract
The invention discloses the accurate display packing of a kind of portable power source battery electric quantity and device, described device comprises: control circuit (200), voltage detecting circuit (80), display circuit (400), current detection circuit; Described method collects the initial voltage of battery (100) by voltage detecting circuit (80), control circuit (200) calculates initial quantity of electricity according to described initial voltage, current detection circuit Real-time Collection real-time current, control circuit (200) calculates change electricity in real time according to described real-time current, described initial quantity of electricity or backup electricity basis on, calculate in real time according to described change electricity and upgrade current electric quantity, described current electric quantity is saved as described backup electricity simultaneously, finally control described display circuit (400) the described current electric quantity of display in real time.The present invention calculates electricity with voltage, electric current and time value, does not produce large deviation, solve the problem that existing portable power source battery electric quantity value differs greatly by battery voltage value fluctuation.
Description
Technical field
The present invention relates to portable power source field, particularly relate to the accurate display packing of a kind of portable power source battery electric quantity and device.
Background technology
Existing portable power source battery electric quantity display is reference with cell voltage, the displaying principle of battery electric quantity is generally the magnitude of voltage being read battery by analog to digital converter, each magnitude of voltage corresponds to a charge value, it is large that each like this magnitude of voltage just corresponds to a charge value battery electric quantity display deviation, be not inconsistent with actual electricity, the normal use of the informational influence user of mistake.And battery electric quantity LED indicates progression few, be difficult to the particular capacity understanding electricity, use is made troubles.
Concrete, be with reference to showing the method for electricity for mainly utilizing realization of tabling look-up with cell voltage in prior art, as shown in table 1:
Table 1
| Voltage (V) | 3.5 | 3.85 | 3.95 | 4.2 |
| Electricity percentage (%) | 20 | 50 | 80 | 100 |
In actual displayed process, utilize the voltage of voltage detecting circuit direct-detection battery, when detect that cell voltage drops on that a left side that two voltages in above table are formed closes that the right side opens interval time, then show the electricity percentage information corresponding to less magnitude of voltage, such as, if detect that cell voltage is 3.8V, then 20% is shown, and due to the magnitude of voltage application condition of battery when charging and discharging large, so the electricity application condition that shows can be caused large.
Summary of the invention
The technical problem to be solved in the present invention is, is with reference to the large defect of the battery electric quantity display deviation caused, provides the accurate display packing of a kind of portable power source battery electric quantity and device for prior art above-mentioned with cell voltage.
The technical solution adopted for the present invention to solve the technical problems is: construct the accurate display packing of a kind of portable power source battery electric quantity, and described method is by gathering the initial voltage of battery, and calculate initial quantity of electricity according to described initial voltage, described method also comprises:
Real-time Collection real-time current, change electricity is calculated in real time according to described real-time current, described initial quantity of electricity or backup electricity basis on, calculate in real time according to described change electricity and upgrade current electric quantity, described current electric quantity is saved as described backup electricity simultaneously, finally control the described current electric quantity of display in real time.
In the accurate display packing of portable power source battery electric quantity of the present invention, calculating described initial quantity of electricity and calculating between described change electricity, comprise further: detect described battery and whether be in charged state or discharge condition, if not, then return and recalculate initial quantity of electricity.
In the accurate display packing of portable power source battery electric quantity of the present invention, the formula calculating change electricity according to real-time current is in real time:
Q1=I*t （1）
Wherein, Q1 representative change electricity, t represents Preset Time, and described Preset Time is execution twice state-detection institute interlude, and I represents real-time current:
I=I
fill-I
put(2)
Wherein, I
fillrepresent the charging current collected in described Preset Time; I
putrepresent the discharge current collected in described Preset Time;
When detecting that described battery is only in charged state, then I=I
fill; When detecting that described battery is only in discharge condition, then I=-I
put; When detecting that described battery is in charged state and discharge condition simultaneously, then I=I
fill-I
put.
In the accurate display packing of portable power source battery electric quantity of the present invention, described calculating the formula upgrading current electric quantity are:
Q3=Q2+Q1 （3）
Wherein, Q3 represents current electric quantity, Q1 representative change electricity, Q2 representative backup electricity or initial quantity of electricity: when first time upgrades electricity: Q2 is initial quantity of electricity, when upgrading electricity after first time: Q2 is backup electricity.
In the accurate display packing of portable power source battery electric quantity of the present invention, the display mode showing described current electric quantity is LCD display.
In the accurate display packing of portable power source battery electric quantity of the present invention, the displaying contents of described current electric quantity is electricity number percent and/or duration of charging.
In the accurate display packing of portable power source battery electric quantity of the present invention, the maximal value of described Preset Time is 5s.
The invention also discloses the accurate display device of a kind of portable power source battery electric quantity, comprise control circuit and voltage detecting circuit, described device also comprises: display circuit, current detection circuit;
Described display circuit, current detection circuit, voltage detecting circuit are all connected to described control circuit;
Described voltage detecting circuit is for gathering the initial voltage of battery, described control circuit is used for calculating initial quantity of electricity according to described initial voltage, the real-time current that described control circuit also collects according to current detection circuit calculates change electricity in real time, described initial quantity of electricity or backup electricity basis on, calculate in real time according to described change electricity and upgrade current electric quantity, described current electric quantity is saved as described backup electricity simultaneously, finally control described display circuit and show described current electric quantity in real time.
In the accurate display device of portable power source battery electric quantity of the present invention, described device also comprises state detection circuit, described state detection circuit is connected to described control circuit, and whether described state detection circuit is in charged state or discharge condition for detecting described battery.
In the accurate display device of portable power source battery electric quantity of the present invention, described device also comprises charging circuit, booster circuit; Described current detection circuit comprises charging current detecting circuit and load current detection circuit;
Described control circuit, charging circuit, booster circuit, charging current detecting circuit, voltage detecting circuit, state detection circuit are connected to described battery respectively; Described load current detection circuit is connected to described booster circuit, and described charging current detecting circuit and load current detection circuit are also connected to described control circuit;
Described charging current detecting circuit is for gathering charging current time described charging circuit charges to described battery, and described load current detection circuit is for gathering discharge current time described battery is discharged to load by described booster circuit.
Implement the accurate display packing of portable power source battery electric quantity of the present invention and device, there is following beneficial effect: the initial voltage being collected battery by voltage detecting circuit, control circuit calculates initial quantity of electricity according to initial voltage, control circuit according to current detection circuit Real-time Collection to real-time current calculate change electricity in real time, initial quantity of electricity or backup electricity basis on, calculate in real time according to change electricity and upgrade current electric quantity, current electric quantity is saved as backup electricity simultaneously, finally control described display circuit and show described current electric quantity in real time.Realization like this calculates electricity with voltage, electric current and time value, large deviation is not produced by battery voltage value fluctuation, solving the display of existing portable power source battery electric quantity is reference with cell voltage, the magnitude of voltage of battery when charging and discharging differs greatly, the problem that the battery electric quantity value of instruction differs greatly.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the process flow diagram of the most preferred embodiment of the accurate display packing of portable power source battery electric quantity of the present invention;
Fig. 2 is the structural representation of the most preferred embodiment of the accurate display device of portable power source battery electric quantity of the present invention.
Embodiment
In order to there be understanding clearly to technical characteristic of the present invention, object and effect, now contrast accompanying drawing and describe the specific embodiment of the present invention in detail.
First, the present invention is with reference to the large defect of the battery electric quantity display deviation caused with cell voltage to solve in prior art, there is provided a kind of portable power source battery electric quantity accurate display packing, the electricity that the method calculates with voltage, electric current and time value, not by the impact of magnitude of voltage fluctuation, overcome the deviation that generation of the prior art is larger.
Add, the present invention adopts LCD to indicate, and progression is many, can well know the electricity of battery 100 in real time, and the progression solving LED instruction is few, the uncertain situation of electricity in peer.
With reference to figure 1, it is the process flow diagram of the most preferred embodiment of the accurate display packing of portable power source battery electric quantity of the present invention.Comprise the following steps:
S1, calculating initial quantity of electricity;
The computation process of initial quantity of electricity comprises: utilize voltage detecting circuit 80 to collect the initial voltage of described battery 100, and control circuit 200 calculates initial quantity of electricity according to described initial voltage, and calculating is herein identical with prior art, repeats no more herein.
S2, state-detection, judge whether charge or discharge;
State-detection mainly comprises the detection of two aspects, and whether one charge, and whether two discharge.
If state detection circuit 90 detects battery 100 not charging or electric discharge, then judge whether battery 100 is enter sleep state, if battery 100 does not enter sleep state, then returns step S1; If battery 100 enters sleep state, then process ends.
S3, calculating change electricity;
The real-time current that control circuit 200 collects according to current detection circuit calculates change electricity in real time, and concrete formula is: the concrete formula calculating change electricity according to real-time current is in real time:
Q1=I*t （1）
Wherein, Q1 representative change electricity, t represents Preset Time, and described Preset Time is for judging institute's interlude for performing every two-wheeled, and namely perform twice state-detection institute interlude, I represents real-time current:
I=I
fill-I
put(2)
Wherein, I
fillrepresent the charging current that in described Preset Time, charging current detecting circuit (310) collects; I
putrepresent the discharge current that described Preset Time internal burden current detection circuit (320) collects;
When described state detection circuit 90 detects that described battery 100 is only in charged state, then the charging current that collects for charging current detecting circuit 310 in described Preset Time of described real-time current, i.e. I=I
fill;
When described state detection circuit 90 detects that described battery 100 is only in discharge condition, then the discharge current that collects for described Preset Time internal burden current detection circuit 320 of described real-time current, i.e. I=-I
put;
When described state detection circuit 90 detects that described battery 100 is in charged state and discharge condition simultaneously, the then difference of discharge current that collects of the charging current that collects for charging current detecting circuit 310 in described Preset Time of described real-time current and load current detection circuit 320, i.e. I=I
fill-I
put.
Here mainly utilize the change of electric current in the short time very little, the principle of steady current can be considered as.Therefore, Preset Time maximal value is here 5s, in the present embodiment, and preferred 1s.Preset Time elects 1s as, can improve the precision of electricity display, and display can be made more steady, there will not be the display of great-jump-forward, contributes to the experience sense promoting user.
S4, calculating current electric quantity;
Current electric quantity is on the basis of the initial quantity of electricity calculated in step sl, interval Preset Time, and the change electricity according to calculating in S4 calculates and upgrades current electric quantity.The formula of concrete calculating current electric quantity is:
Q3=Q2+Q1 （3）
Wherein, Q3 represents current electric quantity, Q1 representative change electricity, Q2 representative backup electricity or initial quantity of electricity: concrete, when first time upgrades electricity: Q2 is initial quantity of electricity, when upgrading electricity after first time: Q2 is backup electricity.
S5, display current electric quantity;
In the present embodiment, the displaying contents of current electric quantity is electricity number percent and duration of charging, can also be other motion graphics, such as hourglass.The preferred LCD display of the display mode of display circuit 400, progression is 100 grades, so can well know the electricity of battery 100 in real time, and the progression solving LED instruction is few, and in same progression the uncertain defect of electricity.Control circuit 200 returns in step S2 after controlling display, continues the electricity renewal work controlling next round.
In the present embodiment, all data stored that need all are stored in control circuit 200, such as, backup electricity to be upgraded accordingly when have updated current electric quantity at every turn, namely this backup electricity is stored in control circuit 200, also has initial quantity of electricity, duration of charging, charged state, charging current, discharge current etc. detected by state detection circuit 90 to be all stored in the calculation procedure of control circuit 200.
With reference to figure 2, it is the structural representation of the most preferred embodiment of the accurate display device of portable power source battery electric quantity of the present invention.
In most preferred embodiment, device comprises: battery 100, control circuit 200, display circuit 400, current detection circuit, voltage detecting circuit 80, state detection circuit 90, charging circuit 110, booster circuit 120; Wherein, described current detection circuit comprises charging current detecting circuit 310 and load current detection circuit 320;
Charging circuit 110, booster circuit 120, voltage detecting circuit 80, state detection circuit 90, charging current detecting circuit 310 are connected to battery 100 respectively, wherein, voltage detecting circuit 80, state detection circuit 90, charging current detecting circuit 310, load current detection circuit 320, display circuit 400 are connected to control circuit 200 respectively.
What voltage detecting circuit 80 adopted is that the mode of two electric resistance partial pressures realizes, the detection of state detection circuit 90 to electric discharge detects signal when soft-touch control or keyswitch are pressed by chip, and the CPU sent a signal in control circuit realizes (portable power source just discharges to load after connecting the detection realizing load time load is carried out discharging by pressing switch), state detection circuit 90 is all realized by sampling resistor to the detection of charging and the collection of current detection circuit to charging current or discharge current.In display circuit 400, the realization of LCD displaying contents is controlled by the CPU in control circuit 200.Concrete circuit no longer describes in detail herein, and this is the known technology of electronic technology field.
Described voltage detecting circuit 80 is for detecting the initial voltage of battery 100, described control circuit 200 is for calculating initial quantity of electricity according to described initial voltage, whether described state detection circuit 90 is in charged state or discharge condition for detecting described battery 100, if not, then return and recalculate initial quantity of electricity, in this way, the real-time current that then described control circuit 200 also detects according to current detection circuit calculates change electricity in real time, on the basis of described initial quantity of electricity, calculate in real time according to described change electricity and upgrade current electric quantity, finally control the described display circuit 400 described current electric quantity of display in real time.
Described charging current detecting circuit 310 is for detecting charging current time described charging circuit 110 charges to described battery 100, and described load current detection circuit 320 is for detecting discharge current time described battery 100 is discharged by the 120 pairs of loads of described booster circuit.
The concrete formula that real-time current calculates change electricity is in real time:
Q1=I*t （1）
Wherein, Q1 representative change electricity, t represents Preset Time, and described Preset Time is for judging institute's interlude for performing every two-wheeled, and namely perform twice state-detection institute interlude, I represents real-time current:
I=I
fill-I
put(2)
Wherein, I
fillrepresent the charging current that in described Preset Time, charging current detecting circuit (310) collects; I
putrepresent the discharge current that described Preset Time internal burden current detection circuit (320) collects;
When described state detection circuit 90 detects that described battery 100 is only in charged state, then the charging current that collects for charging current detecting circuit 310 in described Preset Time of described real-time current, i.e. I=I
fill;
When described state detection circuit 90 detects that described battery 100 is only in discharge condition, then the discharge current that collects for described Preset Time internal burden current detection circuit 320 of described real-time current, i.e. I=-I
put;
When described state detection circuit 90 detects that described battery 100 is in charged state and discharge condition simultaneously, the then difference of discharge current that collects of the charging current that collects for charging current detecting circuit 310 in described Preset Time of described real-time current and load current detection circuit 320, i.e. I=I
fill-I
put.
After having calculated change electricity, then calculate current electric quantity, concrete formula is:
Q3=Q2+Q1 （3）
Wherein, Q3 represents current electric quantity, Q1 representative change electricity, Q2 representative backup electricity or initial quantity of electricity: concrete, when first time upgrades electricity: Q2 is initial quantity of electricity, when upgrading electricity after first time: Q2 is backup electricity.
The display mode of described display circuit 400 is LCD display, and the displaying contents of current electric quantity is electricity number percent and/or duration of charging, and the maximal value of described Preset Time is 5s.In the present embodiment, Preset Time is set to 1s, and Preset Time elects 1s as, can improve the precision of electricity display, and display can be made more steady, there will not be the display of great-jump-forward, contributes to the experience sense promoting user.
By reference to the accompanying drawings embodiments of the invention are described above; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; instead of it is restrictive; those of ordinary skill in the art is under enlightenment of the present invention; do not departing under the ambit that present inventive concept and claim protect, also can make a lot of form, these all belong within protection of the present invention.
Claims (2)
1. the accurate display packing of portable power source battery electric quantity, it is characterized in that, described method realizes based on the accurate display device of portable power source battery electric quantity, described device comprises control circuit (200) and voltage detecting circuit (80), it is characterized in that, described device also comprises: display circuit (400), current detection circuit, state detection circuit (90), charging circuit (110), booster circuit (120); Described current detection circuit comprises charging current detecting circuit (310) and load current detection circuit (320); Described display circuit (400), voltage detecting circuit (80) are all connected to described control circuit (200), and described control circuit (200), charging circuit (110), booster circuit (120), charging current detecting circuit (310), voltage detecting circuit (80), state detection circuit (90) are connected to described battery (100) respectively; Described load current detection circuit (320) is connected to described booster circuit (120), and described charging current detecting circuit (310) and load current detection circuit (320) are also connected to described control circuit (200);
Described method comprises:
Voltage detecting circuit (80) gathers the initial voltage of battery, and control circuit (200) calculates initial quantity of electricity according to described initial voltage;
State detection circuit (90) detects described battery and whether is in charged state or discharge condition, and if not, then control circuit (200) recalculates initial quantity of electricity; If, current detection circuit Real-time Collection real-time current, control circuit (200) calculates change electricity in real time according to described real-time current, described initial quantity of electricity or backup electricity basis on, calculate in real time according to described change electricity and upgrade current electric quantity, described current electric quantity is saved as described backup electricity, finally control described display circuit (400) the described current electric quantity of display in real time, the displaying contents of described current electric quantity is electricity number percent simultaneously;
Wherein, calculating according to real-time current the formula changing electricity is in real time:
Q1＝I*t (1)
Wherein, Q1 representative change electricity, t represents Preset Time, and described Preset Time is execution twice state-detection institute interlude, and described Preset Time is that 1s, I represent real-time current:
I=I
fill-I
put(2)
Wherein, I
fillrepresent that described charging current detecting circuit (310) in described Preset Time collects, when described charging circuit (110) charges to described battery (100) charging current; I
putrepresent that described load current detection circuit (320) in described Preset Time collects, when described battery (100) is discharged to load by described booster circuit (120) discharge current;
When detecting that described battery is only in charged state, then I=I
fill; When detecting that described battery is only in discharge condition, then I=-I
put; When detecting that described battery is in charged state and discharge condition simultaneously, then I=I
fill-I
put;
Described calculating the formula upgrading current electric quantity are:
Q3＝Q2+Q1 (3)
Wherein, Q3 represents described current electric quantity, and Q1 represents described change electricity, and Q2 represents described backup electricity or initial quantity of electricity: when first time upgrades electricity, Q2 is described initial quantity of electricity; When upgrading electricity after first time, Q2 is described backup electricity.
2. the accurate display packing of portable power source battery electric quantity according to claim 1, is characterized in that, the display mode showing described current electric quantity is LCD display.
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| CN110758176A (en) * | 2019-11-21 | 2020-02-07 | 宁波优行环境科技有限公司 | Electric quantity and mileage detection device and method for electric vehicle |
| CN111679206B (en) * | 2020-06-01 | 2022-09-06 | Oppo（重庆）智能科技有限公司 | Electric quantity detection method and device, and storage medium |
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