CN106990361B - A kind of electromobile battery remaining capacity calculation method based on virtual voltage sampling - Google Patents
A kind of electromobile battery remaining capacity calculation method based on virtual voltage sampling Download PDFInfo
- Publication number
- CN106990361B CN106990361B CN201710311233.7A CN201710311233A CN106990361B CN 106990361 B CN106990361 B CN 106990361B CN 201710311233 A CN201710311233 A CN 201710311233A CN 106990361 B CN106990361 B CN 106990361B
- Authority
- CN
- China
- Prior art keywords
- voltage
- sampling
- calculation method
- remaining capacity
- battery remaining
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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]
- G01R31/3644—Constructional arrangements
- G01R31/3648—Constructional arrangements comprising digital calculation means, e.g. for performing an algorithm
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a kind of electromobile battery remaining capacity calculation methods based on virtual voltage sampling, which comprises the following steps: step 1: sampling obtains initial voltage V0；Step 2: current voltage V is obtainedbNumerical value；Step 3: current voltage V is obtainedbCompensated voltage V is obtained according to sampling afterwardst；Then continue sampling in next cycle and obtain Vt'；Step 4: VtAnd Vt' be compared, if Vt’<Vt, illustrate that cell voltage is declining, then display voltage is just updated to Vt'；If Vt’≥Vt, account for voltage does not decline, then display voltage retains original value Vt.Compared with prior art, technical solution of the present invention can utmostly reflect the actual battery capacity of battery, avoid the occurrence of voltage in use process and be sharply increased suddenly or more with generation the phenomenon that more high deviation actual conditions.
Description
Technical field
The invention belongs to vehicle technology field more particularly to a kind of electromobile battery based on virtual voltage sampling are surplus
Remaining electricity calculation method.
Background technique
The electricity of existing electric vehicle shows the residue electricity that voltage signal is all directly generally taken from battery to indicate battery
Amount.Currently, the voltameter of electric vehicle instrument generally has three sections of (multistage) formulas, digital and pointer these types of type, their bases
This is all to indicate battery dump energy by acquiring cell voltage in real time.Current electric vehicle often goes out in use
The problem of existing electric vehicle instrument electricity display inaccuracy, it sometimes appear that in use process voltage be sharply increased suddenly or more use more
The phenomenon that high deviation actual conditions, if understanding the reason of user of battery discharge principle is understood that this state, without
Understand that the user of battery discharge principle can generate complaint, vehicle is needed on earth not need to charge and generate puzzlement, to riding for user
Row brings inconvenience.
Summary of the invention
The technical problem to be solved by the invention is to provide the actual battery appearances that one kind can utmostly reflect battery
The calculation method of the electromobile battery remaining capacity based on virtual voltage sampling of amount.
In order to solve the above technical problems, the present invention adopts the following technical scheme: a kind of based on the electronic of virtual voltage sampling
Vehicle battery remaining capacity calculation method, which comprises the following steps:
Step 1: sampling obtains initial voltage V0；
Step 2: with current loss in electric vehicle operational process, cell voltage can be gradually reduced, and be declined in cell voltage
Every N seconds progress primary voltage sampling in a sampling period in the process, and successively obtain compensated V1, V2, V3.....Vn；It is right
Obtained V1-VnBy bubble sort from low to high, two V in centre are obtainedx, Vy, obtain current voltage Vb=(Vx+Vy)/2, and
Record VbNumerical value；
Step 3: current voltage V is obtainedbCompensated voltage V is obtained according to sampling afterwardst,Vt=Vb+I*K+K1, wherein K be
Current offset values, K1It is temperature compensation value；I is electric vehicle running current, when I≤0, then uncompensation, and obtained Vt=Vb；If I
> 0, the then V obtainedt=V0+I*K+K1；Then continue sampling in next cycle and obtain Vt'；
Step 4: VtAnd Vt' be compared, if Vt’<Vt, illustrate that cell voltage is declining, then showing voltage just more
Newly at Vt'；If Vt’≥Vt, account for voltage does not decline, then display voltage retains original value Vt。
Preferably, V in the step 10Calculation method are as follows: every N seconds progress primary voltage sampling during the sampling period,
And successively obtain V1', V2', V3’.....Vn'；To obtained V1’-Vn' by bubble sort from low to high, Vn' in n be even
Number, obtains two V in centrex', Vy', obtain initial voltage V0=(Vx’+Vy')/2；Preferably, the Vn' in n be 16 or
18, the N are 0.5 or 0.6.
Preferably, K is 0.11 in the step 3；K1In 0 DEG C or less K1=1.5v, K at 0 DEG C to 10 DEG C1=0.5V, 10
DEG C or more K1=0.
Preferably, the V in the step twonIn n be even number；Preferably, the V in the step twonIn n be
16 or 18, the N are 0.5 or 0.6.
Preferably, display voltage keeps dropping during electric vehicle service hours word voltage is shown, electric vehicle is after static
Empty voltage processing, when stationary vehicle, mean electric current I=0, if V > V that sampling obtainst' when, it is accumulative to be sampled, work as the time
Sample obtained V > V within T > M minutest', then the voltage V of number displayt'=V, is updated, and display voltage sampling obtains
V, wherein T is the time of sampling, and M is time constant；Described the general value of M 30 minutes.
Compared with prior art, technical solution of the present invention can utmostly reflect the actual battery capacity of battery,
Voltage in use process is avoided the occurrence of to be sharply increased suddenly or more with generation the phenomenon that more high deviation actual conditions.
Specific embodiment
Below by way of specific embodiment, invention is further described in detail, only useless with what is generated in water drilling production process
Raw material of the gurry as embodiment, but it is not as a limitation of the invention.
Embodiment 1
A kind of electromobile battery remaining capacity calculation method based on virtual voltage sampling, comprising the following steps:
Step 1: sampling obtains initial voltage V0；Progress primary voltage sampling in every 0.5 second during the sampling period, and successively
Obtain V1', V2', V3’.....V16'；To obtained V1’-V16' by bubble sort from low to high, obtain two V in centrex',
Vy', obtain initial voltage V0=(Vx’+Vy')/2=60V.
Step 2: with current loss in electric vehicle operational process, cell voltage can be gradually reduced, and be declined in cell voltage
Progress primary voltage sampling in every 0.5 second in a sampling period in the process, and successively obtain compensated V1, V2, V3.....V16；
To obtained V1-V16By bubble sort from low to high, two V in centre are obtainedx, Vy, obtain current voltage Vb=(Vx+Vy)/2,
And record VbNumerical value is 58V.
Step 3: current voltage V is obtainedbCompensated voltage V is obtained according to sampling afterwardst,Vt=Vb+I*K+K1, wherein K be
Current offset values, K1It is temperature compensation value；I=10A, the then V obtainedt=Vb+I*K+K1；K is 0.11；K at 25 DEG C1=0, it calculates
Obtain Vt=58+10*0.11=59.1V；Then continue sampling in next cycle and obtain Vt'=59.5；
Step 4: VtAnd Vt' be compared, Vt’>Vt, account for voltage does not decline, then display voltage retains original number
Value Vt=59.1.
Embodiment 2
A kind of electromobile battery remaining capacity calculation method based on virtual voltage sampling, comprising the following steps:
Step 1: sampling obtains initial voltage V0；Progress primary voltage sampling in every 0.6 second during the sampling period, and successively
Obtain V1', V2', V3.’....V18'；To obtained V1’-V18' by bubble sort from low to high, obtain two V in centrex',
Vy', obtain initial voltage V0=(Vx’+Vy')/2=60V.
Step 2: with current loss in electric vehicle operational process, cell voltage can be gradually reduced, and be declined in cell voltage
Progress primary voltage sampling in every 0.6 second in a sampling period in the process, and successively obtain compensated V1, V2, V3.....V18；
To obtained V1-V18By bubble sort from low to high, two V in centre are obtainedx, Vy, obtain current voltage Vb=(Vx+Vy)/2,
And record VbNumerical value 56V.
Step 3: current voltage V is obtainedbCompensated voltage V is obtained according to sampling afterwardst,Vt=Vb+I*K+K1, wherein K be
Current offset values, K1It is temperature compensation value；I is electric vehicle running current, I=0, then uncompensation, obtained Vt=Vb=56V；So
Continue sampling in next cycle afterwards and obtains Vt'=55.5V；
Step 4: VtAnd Vt' be compared, if Vt’<Vt, illustrate that cell voltage is declining, then showing voltage just more
Newly at Vt'=55.5V.
Embodiment 3
A kind of electromobile battery remaining capacity calculation method based on virtual voltage sampling, comprising the following steps:
Step 1: sampling obtains initial voltage V0；Progress primary voltage sampling in every 0.6 second during the sampling period, and successively
Obtain V1', V2', V3’.....V16'；To obtained V1’-V16' by bubble sort from low to high, obtain two V in centrex',
Vy', obtain initial voltage V0=(Vx’+Vy')/2=58V.
Step 2: with current loss in electric vehicle operational process, cell voltage can be gradually reduced, and be declined in cell voltage
Progress primary voltage sampling in every 0.6 second in a sampling period in the process, and successively obtain compensated V1, V2, V3.....V16；
To obtained V1-V16By bubble sort from low to high, two V in centre are obtainedx, Vy, obtain current voltage Vb=(Vx+Vy)/2,
And record VbNumerical value 45V.
Step 3: current voltage V is obtainedbCompensated voltage V is obtained according to sampling afterwardst,Vt=Vb+I*K+K1, wherein K be
Current offset values, K1It is temperature compensation value；I=8A, the then V obtainedt=V0+I*K+K1；K is 0.11；K at 5 DEG C1=0.5V；Meter
Calculation obtains Vt=45+8*0.11+0.5=46.38V；Then continue sampling in next cycle and obtain Vt'=48V；
Step 4: VtAnd Vt' be compared, Vt' > Vt, account for voltage does not decline, then display voltage retains original number
Value Vt=46.38V.
Embodiment 4
A kind of electromobile battery remaining capacity calculation method based on virtual voltage sampling, comprising the following steps:
Step 1: sampling obtains initial voltage V0；Every N seconds progress primary voltage sampling during the sampling period, and successively
To V1', V2', V3’.....V18'；To obtained V1’-V18' by bubble sort from low to high, obtain two V in centrex', Vy',
Obtain initial voltage V0=(Vx’+Vy')/2=58V.Step 2: with current loss, cell voltage in electric vehicle operational process
It can be gradually reduced, the progress primary voltage sampling in every 0.5 second in one sampling period during cell voltage decline, and successively
To compensated V1, V2, V3.....V18；To obtained V1-V18By bubble sort from low to high, two V in centre are obtainedx, Vy,
Obtain current voltage Vb=(Vx+Vy)/2, and record VbNumerical value 35V.
Step 3: current voltage V is obtainedbCompensated voltage V is obtained according to sampling afterwardst,Vt=Vb+I*K+K1, wherein K be
Current offset values, K1It is temperature compensation value；I=6A, the then V obtainedt=V0+I*K+K1；K is 0.11；K at -5 DEG C1=1.5v, meter
Calculation obtains Vt=35+6*0.11+1.5=37.16V；Then continue sampling in next cycle and obtain Vt'=35V；Step 4:
VtAnd Vt' be compared, if Vt’<Vt, illustrate that cell voltage is declining, then display voltage is just updated to Vt'=35V.
Embodiment 5
Display voltage keeps dropping during electric vehicle service hours word voltage is shown in embodiment 1-4, and electric vehicle is quiet
Empty voltage processing, when stationary vehicle, mean electric current I=0 after only, if V > V that sampling obtainst' when, it is accumulative to be sampled, it adopts
The method of sampling of above embodiments can be used in quadrat method, samples obtained V > V when time T > M minutet', then number display
Voltage Vt'=V, is updated, and display voltage is the V that sampling obtains, and wherein T is the time of sampling, and M is time constant；
Voltage drops to 55V from original 60V after running for a period of time, then the voltage value of electric vehicle record is 55V,
Due to the presence of battery of electric vehicle empty voltage, voltage rises to 58V after static, then sampling starts to add up when I=0
Time T, works as T > 30 minute, and the cell voltage for sampling out is 58V, then display is just updated to 58V from original 55V.It is static
30 minutes or more are to prevent the phenomenon that voltage does not rise during the charging process the purpose of restoring the voltage of present sample.
Compared with prior art, technical solution of the present invention can utmostly reflect the actual battery capacity of battery,
Voltage in use process is avoided the occurrence of to be sharply increased suddenly or more with generation the phenomenon that more high deviation actual conditions.
The above description of the embodiment is only used to help understand the method for the present invention and its core ideas.It should be pointed out that pair
For those skilled in the art, without departing from the principle of the present invention, the present invention can also be carried out
Some improvements and modifications, these improvements and modifications also fall within the scope of protection of the claims of the present invention.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (8)
1. a kind of electromobile battery remaining capacity calculation method based on virtual voltage sampling, which is characterized in that including following
Step:
Step 1: sampling obtains initial voltage V0；
Step 2: with current loss in electric vehicle operational process, cell voltage can be gradually reduced, and decline process in cell voltage
In every N seconds progress primary voltage sampling in a sampling period, and successively obtain compensated V1, V2, V3.....Vn；To obtaining
V1-VnBy bubble sort from low to high, two V in centre are obtainedx, Vy, obtain current voltage Vb=(Vx+Vy)/2, and record Vb
Numerical value；
Step 3: current voltage V is obtainedbCompensated voltage V is obtained according to sampling afterwardst,Vt=Vb+I*K+K1, wherein K is electric current
Offset, K1It is temperature compensation value；I is electric vehicle running current, when I≤0, then uncompensation, and obtained Vt=Vb；If I > 0,
The V then obtainedt=V0+I*K+K1；Then continue sampling in next cycle and obtain Vt'；
Step 4: VtAnd Vt' be compared, if Vt’<Vt, illustrate that cell voltage is declining, then display voltage is just updated to
Vt'；If Vt’≥Vt, account for voltage does not decline, then display voltage retains original value Vt。
2. the electromobile battery remaining capacity calculation method according to claim 1 based on virtual voltage sampling, special
Sign is, V in the step 10Calculation method are as follows: every N seconds progress primary voltage sampling during the sampling period, and successively
To V1', V2', V3’.....Vn'；To obtained V1’-Vn' by bubble sort from low to high, Vn' in n be even number, obtain
Between two Vx', Vy', obtain initial voltage V0=(Vx’+Vy’)/2。
3. the electromobile battery remaining capacity calculation method according to claim 2 based on virtual voltage sampling, special
Sign is: the Vn' in n be 16 or 18, the N be 0.5S or 0.6S.
4. the electromobile battery remaining capacity calculation method according to claim 1 based on virtual voltage sampling, special
Sign is: K is 0.11 in the step 3；K1In 0 DEG C or less K1=1.5v, K at 0 DEG C to 10 DEG C1=0.5V, 10 DEG C or more K1
=0.
5. the electromobile battery remaining capacity calculation method according to claim 1 based on virtual voltage sampling, special
Sign is, the V in the step twonIn n be even number.
6. the electromobile battery remaining capacity calculation method according to claim 5 based on virtual voltage sampling, special
Sign is, the V in the step twonIn n be 16 or 18, the N be 0.5S or 0.6S.
7. the electromobile battery remaining capacity calculation method according to claim 1 based on virtual voltage sampling, special
Sign is: display voltage keeps dropping during electric vehicle service hours word voltage is shown, electric vehicle is at static rear empty voltage
Reason, when stationary vehicle, mean electric current I=0, if V > V that sampling obtainst' when, it is accumulative to be sampled, when time T > M minute
Sample obtained V > Vt', then the voltage V of number displayt'=V, being updated display voltage is V, when wherein T is sampling
Between, M is time constant.
8. the electromobile battery remaining capacity calculation method according to claim 7 based on virtual voltage sampling, special
Sign is: the M value 30 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710311233.7A CN106990361B (en) | 2017-05-05 | 2017-05-05 | A kind of electromobile battery remaining capacity calculation method based on virtual voltage sampling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710311233.7A CN106990361B (en) | 2017-05-05 | 2017-05-05 | A kind of electromobile battery remaining capacity calculation method based on virtual voltage sampling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106990361A CN106990361A (en) | 2017-07-28 |
| CN106990361B true CN106990361B (en) | 2019-07-19 |
Family
ID=59418807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710311233.7A Active CN106990361B (en) | 2017-05-05 | 2017-05-05 | A kind of electromobile battery remaining capacity calculation method based on virtual voltage sampling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106990361B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107817859A (en) * | 2017-10-30 | 2018-03-20 | 深圳市道通智能航空技术有限公司 | A kind of cell voltage filtering method and device |
| CN111142028B (en) * | 2020-02-20 | 2022-02-08 | 广东天波信息技术股份有限公司 | Method and device for measuring electric quantity of lithium battery |
| 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 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01313783A (en) * | 1988-06-14 | 1989-12-19 | Philips Kk | Measuring circuit for capacity of battery |
| CN201926746U (en) * | 2011-01-12 | 2011-08-10 | 启明信息技术股份有限公司 | Battery charge state calibrator of battery management system for electric automobile |
| CN102608536A (en) * | 2012-02-29 | 2012-07-25 | 金华市金开电子科技有限公司 | Electric vehicle storage battery dump energy algorithm based on digital voltage sampling |
| CN102761141A (en) * | 2011-04-25 | 2012-10-31 | 中国科学院上海微系统与信息技术研究所 | Electric quantity correction and control method of lithium ion power storage battery |
| CN102998623A (en) * | 2011-09-14 | 2013-03-27 | 北汽福田汽车股份有限公司 | Method and system of online estimation for battery state of charge |
| CN106125008A (en) * | 2016-08-31 | 2016-11-16 | 河南森源电气股份有限公司 | The Method for Accurate Calculation of a kind of SOC on-line parameter self-correction and device |
-
2017
- 2017-05-05 CN CN201710311233.7A patent/CN106990361B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01313783A (en) * | 1988-06-14 | 1989-12-19 | Philips Kk | Measuring circuit for capacity of battery |
| CN201926746U (en) * | 2011-01-12 | 2011-08-10 | 启明信息技术股份有限公司 | Battery charge state calibrator of battery management system for electric automobile |
| CN102761141A (en) * | 2011-04-25 | 2012-10-31 | 中国科学院上海微系统与信息技术研究所 | Electric quantity correction and control method of lithium ion power storage battery |
| CN102998623A (en) * | 2011-09-14 | 2013-03-27 | 北汽福田汽车股份有限公司 | Method and system of online estimation for battery state of charge |
| CN102608536A (en) * | 2012-02-29 | 2012-07-25 | 金华市金开电子科技有限公司 | Electric vehicle storage battery dump energy algorithm based on digital voltage sampling |
| CN106125008A (en) * | 2016-08-31 | 2016-11-16 | 河南森源电气股份有限公司 | The Method for Accurate Calculation of a kind of SOC on-line parameter self-correction and device |
Non-Patent Citations (1)
| Title |
|---|
| 电动汽车电池的SOC估算和续航里程显示及报警;李一冰 等;《蓄电池》;20170430;第54卷(第2期);65-69,93 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106990361A (en) | 2017-07-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10126369B2 (en) | Secondary battery capacity measurement system and secondary battery capacity measurement method | |
| CN106990361B (en) | A kind of electromobile battery remaining capacity calculation method based on virtual voltage sampling | |
| CN102861726B (en) | Lithium secondary battery consistency screening method | |
| CN101421634B (en) | Device and method for determining replacement of storage battery | |
| CN103985917B (en) | Low-temperature charging and discharging method for lithium battery | |
| CN105891730B (en) | A kind of computational methods of automobile power cell capacity | |
| CN106291372A (en) | Novel method for predicting residual life of lithium ion power battery | |
| CN108508365A (en) | A kind of lithium ion battery self discharge screening technique | |
| CN103293481A (en) | Lithium ion battery self-discharging quick detecting method | |
| CN104167571B (en) | The lead acid batteries charger charge technology that a kind of applicable electric motor car uses | |
| CN104111377A (en) | Method for measuring DC (Direct Current) internal resistance of secondary battery in different charge states | |
| CN106814317B (en) | Mobile terminal and mobile terminal electric quantity display method based on charging habit | |
| CN103048628B (en) | Device and method for obtaining full charge endurance of electromobile | |
| CN101714665B (en) | Battery formation method | |
| CN106997960A (en) | A kind of chemical conversion of lithium ion battery, partial volume method | |
| CN110728056A (en) | Maximum current simulation test method for charging and discharging of lithium ion battery | |
| CN102403536A (en) | Cylindrical lithium battery formation method | |
| CN108511823A (en) | A kind of lithium ion battery self discharge SOC state screening techniques | |
| CN104391249A (en) | Cell electric quantity displaying method and device and mobile terminal | |
| CN105277885A (en) | Method for shortening the time of testing the cycle life of lithium ion batteries | |
| CN109633447B (en) | Remaining power display method and computer-readable storage medium | |
| CN115407206A (en) | SOH self-adaptive estimation method based on capacity accumulation | |
| CN108808140B (en) | Power battery charging management method | |
| CN102778649A (en) | SOC (System on Chip) estimation method | |
| CN104111429A (en) | Method for metering residual electric quantity of lithium battery based on voltage tracking |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 321000 No. 788-2, industry and Trade Street, Jinhua, Zhejiang Patentee after: Zhejiang Jin Kai Network Technology Co., Ltd. Address before: 321000 No. 788-2, industry and Trade Street, Jinhua, Zhejiang Patentee before: ZHEJIANG JINKAI ELECTRONIC TECHNOLOGY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |