CN105954686A - Fixed line electric automobile power battery residual electric quantity estimation method - Google Patents
Fixed line electric automobile power battery residual electric quantity estimation method Download PDFInfo
- Publication number
- CN105954686A CN105954686A CN201610475509.0A CN201610475509A CN105954686A CN 105954686 A CN105954686 A CN 105954686A CN 201610475509 A CN201610475509 A CN 201610475509A CN 105954686 A CN105954686 A CN 105954686A
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- capacity
- battery
- soh
- mileage
- soc
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- 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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Tests Of Electric Status Of Batteries (AREA)
Abstract
The invention discloses a fixed line electric automobile power battery residual electric quantity estimation method. The method comprises the following steps: calibrating a work condition capacity C00, and obtaining a work condition coefficient K00, wherein K00=C00/C0, and C0 is a rated capacity; calibrating a certain work condition mileage and a consumed electric quantity, and obtaining a work condition capacity change amount C10n; calibrating a battery state of health (SOH), wherein SOH=(a rated total mileage-an accumulated driving mileage)/the rated total mileage; calculating a current-day available capacity C, wherein C=C0*K00*SOH; and accumulating a consumed battery capacity Cu=(sigma C10n)/SOH, calculating a residual state of charge (SOC), wherein SOC=(C-Cu)/C*100%. According to the invention, an error source can be effectively eliminated, the estimation method is simple, and the estimation result is accurate.
Description
Technical field
The invention belongs to electric automobile power battery management domain, more particularly to the evaluation method of a kind of fixing circuit residual capacity of power battery of electric automobile.
Background technology
Electric automobile is with motor as power set, the vehicles with battery as energy storage device.Development of EV is various countries' emerging strategic industries of Devoting Major Efforts To Developing after energy crisis and financial crisis.Therefore, battery management is extremely important.Set of cells dump energy (
SOC
) it is the important parameter of battery management system, it is that battery uses the most important reference frame of route planning, is also the foundation of power management etc. in battery management.
Estimation
SOC
Original method be open-circuit voltage method
OCV
, but this method needs the most static, and what integration method was estimated on time is electricity, then the correspondence between electricity and capacity there will be again error.And study burning hot Kalman filtering method and fuzzy neural network method, and due to hardware condition and the maturity of algorithm self of battery management system, can't get a lot of applications at present, the most current
SOC
Estimation error is the biggest.
Summary of the invention
For the technical problem of above-mentioned existence, it is an object of the invention to provide the evaluation method of a kind of fixing circuit residual capacity of power battery of electric automobile, can effectively eliminate source of error, evaluation method is simple, estimation result is accurate.
The technical scheme is that
The evaluation method of a kind of fixing circuit residual capacity of power battery of electric automobile, it is characterised in that comprise the following steps:
S01
: declared working condition capacity
C00
, obtain application factor
K00
,
K00=C00/C0
,
C0
For rated capacity；
S02
: demarcate certain operating mode mileage, the electricity of consumption, obtain operating mode volume change amount
C10n
；
S03
: demarcate cell health state
SOH
,
SOH=
(specified total kilometrage
-
Accumulative enforcement mileage)
/
Specified total kilometrage；
S04
: calculate and can play capacity the same day
C
,
C=C0*K00*SOH
；
S05
: add up the battery capacity of consumption, consume battery capacity
Cu=
(∑
C10n
)
/SOH
, calculate dump energy
SOC
,
SOC=
(
C- Cu
)
/C*100%
。
Preferably, described step
S01
Including, battery is fully charged, according to actual condition, battery is gone to
100%DOD
, record distance travelled, using the electricity of coulant meter record as operating mode capacity
C00
。
Preferably, described step
S02
Including, travel
100%DOD
Distance
10%
、
20%
、
30%
、
40%
、
50%
、
60%
、
70%
、
80%
、
90%
Operating mode mileage, the consumption electricity that record is corresponding, the electricity graph of relation drawing mileage and the consumption travelled also is fitted, and draws operating mode volume change amount
C10n
。
Preferably, described step
S03
Including, use new battery to go to electricity residue under same link operating mode
80%
The mileage exercised, demarcates specified total kilometrage.
Preferably, right
SOC
Calibration, fully charged after, will
SOC
It is set to
100%
。
Compared with prior art, the invention has the beneficial effects as follows:
The evaluation method of the present invention uses the actual measurement of direct operating mode to determine method, can effectively eliminate source of error, and evaluation method is simple, estimation result is accurate.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings and embodiment the invention will be further described:
Figure
1
It it is the flow chart of the evaluation method of a kind of fixing circuit residual capacity of power battery of electric automobile of the present invention.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention of greater clarity, below in conjunction with detailed description of the invention and referring to the drawings, the present invention is described in more detail.It should be understood that these describe the most exemplary, and it is not intended to limit the scope of the present invention.Additionally, in the following description, the description to known features and technology is eliminated, to avoid unnecessarily obscuring idea of the invention.
Embodiment:
Such as figure
1
Shown in, the evaluation method of the fixing circuit residual capacity of power battery of electric automobile of the present invention, including:
1
, operating mode capacity
C00
Demarcate, owing to the route of the electric motor coach such as public transport, regular bus on and off duty is fixed, stable conditions, available laboratory vehicle declared working condition capacity
C00
With rated capacity
C0
Relation.
K00=
(
C00/C0
) it is referred to as application factor.
, operating mode mileage
M10n
With operating mode capacity
C00
The demarcation of change.Owing to the route of the electric motor coaches such as public transport, the whole company every class car is fixed, stable conditions, available laboratory vehicle is demarcated often respectively
10%M10n
With operating mode volume change amount
C10n
Corresponding relation.
, cell health state
SOH
Scaling method, owing to the route of the electric motor coach such as public transport, regular bus on and off duty is fixed,
SOH
Can simply be demarcated by accumulative mileage and specified total kilometrage.Here
SOH
Represented by the percentage ratio of residual capacity with new battery nominal capacity.
, calculate the same day can play capacity
C
, rated capacity it is multiplied by application factor and is multiplied by again
SOH
, i.e.
C=C0*K00*SOH
。
、
SOC
Estimation, the accumulative capacity i.e. contents of decrement calculating consumption
Cu=
(∑
C10n
)
/SOH
, recycling
SOC=
(same day can play capacity
C-
Contents of decrement
Cu
)
/
The same day can play capacity
C*100%
Calculate
SOC
。
、
SOC
Calibration, fully charged after, will
SOC
It is set to
100%
。
Concrete example is as follows:
10.5
Meter Hai Ge
6109
Pure electric bus, adapted
180
The ferric phosphate lithium cell of degree electricity, for Suzhou
1
Day tour route.
, the application factor of marked capacity, battery is fully charged, according to actual condition, battery is gone to
100%DOD
, record distance travelled.Using the electricity of coulant meter record as operating mode capacity
C00
, application factor
K00=C00/C0
。
, travel
100%DOD
Distance
10%
,
20%
,
30%
,
40%
,
50%
,
60%
,
70%
,
80%
,
90%
Mileage, the consumption electricity that record is corresponding, the electricity graph of relation drawing mileage and the consumption travelled also is fitted, and draws operating mode volume change amount
C10n
。
, the demarcation of specified total kilometrage, in advance by new battery go under same link operating mode capacity residue
80%
The total kilometrage exercised.
SOH=
(specified total kilometrage
-
Accumulative enforcement mileage)
/
Specified total kilometrage.
4, capacity can be played the same day
C
Determination, with step
1
The application factor obtained is multiplied by rated capacity and is multiplied by
SOH
。
C= C0*K00*SOH
。
, calculate
SOC
, determine
SOC
Starting point, add up the capacity i.e. contents of decrement of consumption
Cu=
(∑
C10n
)
/SOH
, recycling
SOC=
(same day can play capacity
C-
Contents of decrement
Cu
)
/
The same day can play capacity
C*100%
Calculate
SOC
。
If, fully charged after
SOC
Display is not
100%
, will
SOC
It is calibrated to
100%
。
It should be appreciated that the above-mentioned detailed description of the invention of the present invention is used only for exemplary illustration or explains the principle of the present invention, and it is not construed as limiting the invention.Therefore, any modification, equivalent substitution and improvement etc. done in the case of without departing from the spirit and scope of the present invention, should be included within the scope of the present invention.Additionally, claims of the present invention be intended to fall in the equivalents on scope and border or this scope and border whole change and modifications example.
Claims (5)
1. the evaluation method of a fixing circuit residual capacity of power battery of electric automobile, it is characterised in that comprise the following steps:
S01: declared working condition capacity C 00, obtains application factor K00, and K00=C00/C0, C0 are rated capacity；
S02: demarcate certain operating mode mileage, the electricity of consumption, obtains operating mode volume change amount C10n；
S03: demarcate the specified total kilometrage of cell health state SOH, SOH=(-accumulative enforcement mileage)/specified total kilometrage；
S04: calculate and can play capacity C, C=C0*K00*SOH the same day；
S05: add up the battery capacity of consumption, consumes battery capacity Cu=(∑ C10n)/SOH, calculate remaining capacity SOC, SOC=(C-Cu)/C*100%.
The evaluation method of fixing circuit residual capacity of power battery of electric automobile the most according to claim 1, it is characterized in that, described step S01 includes, battery is fully charged, according to actual condition, battery is gone to 100%DOD, record distance travelled, using the electricity of coulant meter record as operating mode capacity C 00.
The evaluation method of fixing circuit residual capacity of power battery of electric automobile the most according to claim 1, it is characterized in that, described step S02 includes, travel the operating mode mileage of the 10% of 100%DOD distance, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, the consumption electricity that record is corresponding, draw the electricity graph of relation of mileage and the consumption travelled and be fitted, drawing operating mode volume change amount C10n.
The evaluation method of fixing circuit residual capacity of power battery of electric automobile the most according to claim 1, it is characterised in that described step S03 includes, uses new battery to go to the mileage that electricity residue 80% is exercised under same link operating mode, demarcates specified total kilometrage.
The evaluation method of fixing circuit residual capacity of power battery of electric automobile the most according to claim 1, it is characterised in that to SOC calibrate, fully charged after, SOC is set to 100%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610475509.0A CN105954686B (en) | 2016-06-27 | 2016-06-27 | A kind of evaluation method of fixed route residual capacity of power battery of electric automobile |
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|---|---|---|---|
| CN201610475509.0A CN105954686B (en) | 2016-06-27 | 2016-06-27 | A kind of evaluation method of fixed route residual capacity of power battery of electric automobile |
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| CN105954686B CN105954686B (en) | 2018-11-27 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108490363A (en) * | 2018-03-26 | 2018-09-04 | 深圳市沃特沃德股份有限公司 | Smart machine electricity display control method and device |
| CN110275118A (en) * | 2019-06-27 | 2019-09-24 | 金龙联合汽车工业（苏州）有限公司 | A kind of power-type power battery health status evaluation method |
| CN111323719A (en) * | 2020-03-18 | 2020-06-23 | 北京理工大学 | Method and system for online determination of health state of power battery pack of electric automobile |
| CN112147513A (en) * | 2020-09-23 | 2020-12-29 | 南京工程学院 | Power battery SOC multidimensional calibration method |
| WO2021089057A1 (en) * | 2019-11-05 | 2021-05-14 | 奥动新能源汽车科技有限公司 | Method, system and device for acquiring battery health, and readable storage medium |
| CN113253117A (en) * | 2021-05-28 | 2021-08-13 | 雅迪科技集团有限公司 | Estimation method and estimation device for residual SOE value |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108490363A (en) * | 2018-03-26 | 2018-09-04 | 深圳市沃特沃德股份有限公司 | Smart machine electricity display control method and device |
| CN110275118A (en) * | 2019-06-27 | 2019-09-24 | 金龙联合汽车工业（苏州）有限公司 | A kind of power-type power battery health status evaluation method |
| CN110275118B (en) * | 2019-06-27 | 2021-06-22 | 金龙联合汽车工业（苏州）有限公司 | Power type power battery state of health estimation method |
| WO2021089057A1 (en) * | 2019-11-05 | 2021-05-14 | 奥动新能源汽车科技有限公司 | Method, system and device for acquiring battery health, and readable storage medium |
| CN111323719A (en) * | 2020-03-18 | 2020-06-23 | 北京理工大学 | Method and system for online determination of health state of power battery pack of electric automobile |
| CN112147513A (en) * | 2020-09-23 | 2020-12-29 | 南京工程学院 | Power battery SOC multidimensional calibration method |
| CN113253117A (en) * | 2021-05-28 | 2021-08-13 | 雅迪科技集团有限公司 | Estimation method and estimation device for residual SOE value |
| CN113253117B (en) * | 2021-05-28 | 2023-10-13 | 雅迪科技集团有限公司 | Estimation method and estimation device for residual SOE value |
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| Publication number | Publication date |
|---|---|
| CN105954686B (en) | 2018-11-27 |
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