CN105774574A - New energy automobile battery state-of-charge calibration method and device - Google Patents
New energy automobile battery state-of-charge calibration method and device Download PDFInfo
- Publication number
- CN105774574A CN105774574A CN201610108318.0A CN201610108318A CN105774574A CN 105774574 A CN105774574 A CN 105774574A CN 201610108318 A CN201610108318 A CN 201610108318A CN 105774574 A CN105774574 A CN 105774574A
- Authority
- CN
- China
- Prior art keywords
- soc
- battery
- charge
- state
- calibration value
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
The invention discloses a new energy automobile battery state-of-charge calibration method and device. The method comprises the steps that 1, in the battery charging or discharging process, the first state-of-charge value of a battery is determined through an ampere-hour integral method; 2, in the charging or discharging process, the second state-of-charge value of the battery is determined on the basis of the battery open-circuit voltage; and 3, the battery state-of-charge calibration value is determined on the basis of the first state-of-charge value and the second state-of-charge value. According to the implementation mode of the new energy automobile battery state-of-charge calibration method and device, the automatic calibration function of the state of charge can be achieved, accumulated errors of the state of charge in the counting process are avoided, and the using efficiency of the battery is improved.
Description
Technical field
The present invention relates to automobile technical field, more particularly, to calibration steps and the device of a kind of new energy car battery state-of-charge.
Background technology
Energy shortage, oil crisis and environmental pollution grow in intensity, and bring tremendous influence to the life of people, are directly connected to national economy and the sustainable development of society.Countries in the world are all at active development new energy technology.Electric automobile is as a kind of new-energy automobile reducing consumption of petroleum, low stain, low noise, it is believed that be the important channel solving energy crisis and ecological deterioration.Hybrid vehicle takes into account pure electric automobile and the advantage of traditional combustion engine automobile simultaneously, under the premise meeting vehicle dynamic quality requirement and continual mileage requirement, it is effectively improved fuel economy, reduces discharge, it is believed that be one of active path that is currently energy-conservation and that reduce discharging.
Battery dump energy is also known as battery charge state (StateofCharge, SOC), and the electricity that expression battery is currently available for electrical equipment use is how many.SOC can provide important evidence for the energy management strategies of electric automobile whole.Accurate estimating remaining capacity of battery can make SOC maintain in rational scope when battery uses, it is prevented that overcharges or crosses battery of being rivals in a contest and cause damage, and for Appropriate application battery, prolongation battery, reduction battery use cost provides important evidence.
Accurately estimation SOC value is one of vital task of battery management system.In the charge and discharge process of new-energy automobile power battery (such as lithium battery), the computational accuracy of SOC there is higher requirement.In actual applications, ampere-hour integration method, open-circuit voltage (OpenCircuitVoltage, OCV)-SOC curve method or the combination of both is generally adopted to calculate SOC.For avoiding the detection error impact on SOC in calculating process, when reaching charge cutoff condition or electric discharge cut-off condition, SOC value is set as fixed value.
But, current sample error and quantization error is there is in ampere-hour integration method in current detecting process, there is the impact etc. of monomer voltage sampling error, current discharge multiplying power in OCV-SOC curve method, therefore the result of calculation of final SOC all can be impacted by both approaches in calculating process.Under actual condition, all previous accumulative meeting causes that calculating error increases, thus the service efficiency of appreciable impact battery.
Summary of the invention
The purpose of the present invention is to propose to the calibration steps of a kind of new energy car battery state-of-charge and device, thus reducing SOC to calculate error, and improving the service efficiency of battery.
The technical scheme of embodiment of the present invention is as follows:
A kind of calibration steps of new energy car battery state-of-charge, including:
In the charging process or discharge process of battery, ampere-hour integration method is utilized to determine the first SOC of described battery；
In described charging process or discharge process, determine the second SOC of described battery based on battery open circuit voltage；
Based on described first SOC and described second SOC, it is determined that the state-of-charge calibration value of described battery.
Preferably, the method also includes:
When reaching charge cutoff condition in described charging process, set rechargeable standard mark also resets electric discharge standard sign；
And/or
When reaching electric discharge cut-off condition in described discharge process, set electric discharge standard sign also resets rechargeable standard mark.
Preferably, described based on described first SOC with described second SOC, it is determined that the state-of-charge calibration value of described battery includes:
When described rechargeable standard mark or electric discharge standard sign are set, described first SOC is defined as the state-of-charge calibration value of described battery.
Preferably, described based on described first SOC with described second SOC, it is determined that the state-of-charge calibration value of described battery includes:
When described rechargeable standard mark and electric discharge standard sign are all without, when being set, calculating the first SOC and the weighted mean of the second SOC, described weighted mean is defined as the state-of-charge calibration value of described battery.
Preferably, the weighted mean of described calculating the first SOC and the second SOC includes:
Interval based on the state-of-charge residing for the second SOC, it is determined that the weight A of the second SOC；
(1-A) is defined as the weight of the first SOC；
Calculating weighted mean S, S=SOC2*A+ (1-A) * SOC1, wherein the first SOC is SOC1；Second SOC is SOC2.
A kind of calibrating installation of new energy car battery state-of-charge, including:
First SOC determines module, for, in the charging process or discharge process of battery, utilizing ampere-hour integration method to determine the first SOC of described battery；
Second SOC determines module, for, in described charging process or discharge process, determining the second SOC of described battery based on battery open circuit voltage；
Calibration value determines module, for based on described first SOC and described second SOC, it is determined that the state-of-charge calibration value of described battery.
Preferably, also include:
Arranging module, for when reaching charge cutoff condition in described charging process, set rechargeable standard mark also resets electric discharge standard sign；When reaching electric discharge cut-off condition in described discharge process, set electric discharge standard sign also resets rechargeable standard mark.
Preferably,
Calibration value determines module, for when described rechargeable standard mark or electric discharge standard sign are set, described first SOC being defined as the state-of-charge calibration value of described battery.
Preferably, calibration value determines module, for when described rechargeable standard mark and electric discharge standard sign are all without, when being set, calculating the first SOC and the weighted mean of the second SOC, described weighted mean being defined as the state-of-charge calibration value of described battery.
Preferably, calibration value determines module, for interval based on the state-of-charge residing for the second SOC, it is determined that the weight A of the second SOC；(1-A) is defined as the weight of the first SOC；Calculating weighted mean S, S=SOC2*A+ (1-A) * SOC1, wherein the first SOC is SOC1；Second SOC is SOC2.
Find out from technique scheme, in embodiments of the present invention, in the charging process or discharge process of battery, utilize ampere-hour integration method to determine the first SOC value of battery；In charging process or discharge process, determine the second SOC value of battery based on battery open circuit voltage；Based on the first SOC value and the second SOC value, it is determined that the SOC calibration value of battery.Visible, the present invention is by considering the first SOC value and the second SOC value, it is possible to reduces SOC and calculates error, and improves the service efficiency of battery.
And, embodiment of the present invention is by arranging rechargeable standard mark and electric discharge standard sign, and under different current conditions voltage compensation to cell voltage, adopt open-circuit voltage method that the 2nd SOC is carried out computation of table lookup according to actual temperature, and determine different weights according to interval residing for the second SOC value, it is possible to obtain the SOC calibration value that precision is of a relatively high.
Accompanying drawing explanation
The present invention is only schematically illustrated and explains by the following drawings, not delimit the scope of the invention.
Fig. 1 is the calibration steps flow chart according to new energy car battery state-of-charge of the present invention.
Fig. 2 is the calibration steps flow chart of the new energy car battery state-of-charge according to first embodiment of the invention.
Fig. 3 is the calibration steps flow chart of the new energy car battery state-of-charge according to second embodiment of the invention.
Fig. 4 is the calibrating installation structure chart of the new energy car battery state-of-charge according to the present invention.
Detailed description of the invention
In order to the technical characteristic of invention, purpose and effect are more clearly understood from, now comparison accompanying drawing illustrates the specific embodiment of the present invention, and label identical in the various figures represents identical part.
Succinct and directly perceived in order on describing, is illustrated the solution of the present invention hereafter by describing some representational embodiments.In embodiment, substantial amounts of details is only adapted to assist in and understands the solution of the present invention.However, it will be apparent that these details can be not limited to when technical scheme realizes.In order to avoid unnecessarily having obscured the solution of the present invention, some embodiments do not describe meticulously, but only give framework.Hereinafter, " including " refers to " including but not limited to ", " according to ... " refer to " according at least to ..., but be not limited to according only to ... ".Due to the language convention of Chinese, when hereinafter not particularly pointing out the quantity of a composition, it is meant that this composition can be one can also be multiple, or can be regarded as at least one.
It is found by the applicant that: in electrokinetic cell use procedure, when each discharge and recharge is attained by discharge and recharge cut-off condition, it is possible to obtain accurate system SOC value (such as, 0 or 1), relatively accurate SOC can be obtained by ampere-hour integration method on this basis.But, in actual use, it is not that each discharge and recharge is attained by discharge and recharge cut-off condition, therefore SOC cannot be calibrated, charge and discharge cycles all can accumulate certain error so every time, after cannot calibrating for a long time, its cumulative error can reach a unacceptable stage, therefore is calibrated becoming a requisite link to SOC by certain method.
The present invention proposes a kind of method in charge and discharge process, SOC being calibrated, it is possible to achieve the automatic calibration function of SOC, it is to avoid SOC cumulative error in calculating process.
Fig. 1 is the calibration steps flow chart according to new energy car battery state-of-charge of the present invention.
As it is shown in figure 1, the method includes:
Step 101: in the charging process or discharge process of battery, utilizes ampere-hour integration method to determine the first SOC value of battery.
The dump energy of battery=total electricity deducts the electricity released.Here, it is possible to do not spend the relation studied between relatively complicated electrochemical reaction and each parameter of inside battery, and battery is seen as a closed system, be concerned only with the surface of system.
In electric quantity monitoring, the electricity passing in and out this closed system of battery is added up, estimated the SOC of battery by accumulation battery electricity in charge or discharge process.
Ampere-hour integration method adopts integration method to calculate the electricity being filled with battery and releasing from battery in real time, the electricity of battery is carried out record and monitoring for a long time, so can carry out the comparison under any time with Full Charge Capacity, thus the dump energy corresponding to this moment just can be obtained, i.e. the first SOC value of battery.
Step 102: in this charging process or this discharge process, determines the second SOC of battery based on battery open circuit voltage.
Here, utilize the open-circuit voltage of battery and the corresponding relation of the battery discharge degree of depth, estimate SOC by measuring the open-circuit voltage of battery, to obtain the second SOC value.
For the battery (such as lithium ion battery) of new-energy automobile, open-circuit voltage and SOC have certain proportional relation, it is possible to comparatively directly obtain the SOC of battery in this way.
Specifically, it is possible to pre-build battery modules cell voltage compensating curve under different charge-discharge magnifications, thus obtaining open-circuit voltage (OCV) corresponding under different discharge-rate.
Such as: based on the charging current in charging process or discharge process or discharge current, obtain the open-circuit voltage corresponding to this charging current or discharge current.And, the present invention can also pre-build the OCV-SOC curve under different temperatures, thus determining the SOC value corresponding to this open-circuit voltage according to OCV-SOC curve, i.e. and the second SOC value.
Step 103: based on the first SOC value and the second SOC value, it is determined that the SOC calibration value of battery.
Here, it is possible to based on the first SOC value and the second SOC value, it is determined that the SOC calibration value of battery.In electrokinetic cell use procedure, when each discharge and recharge is attained by discharge and recharge cut-off condition, it is possible to obtain accurate system SOC value (such as, 0 or 1), relatively accurate SOC can be obtained by ampere-hour integration method on this basis.
And, when discharge and recharge can not reach discharge and recharge cut-off condition, it is possible to the first SOC value and the second SOC value are computed weighted, to obtain the SOC calibration value of battery.
In one embodiment, the method also includes:
When reaching charge cutoff condition in charging process, set rechargeable standard mark also resets electric discharge standard sign；And/or, when reaching electric discharge cut-off condition in discharge process, set electric discharge standard sign also resets rechargeable standard mark.
Wherein, charge cutoff condition can include full or battery the monomer voltage of battery and reach peak, etc..
Similar, electric discharge cut-off condition includes: battery thoroughly discharges or the monomer voltage of battery reaches minimum, etc..
It is 1 that set rechargeable standard mark specifically may be embodied as rechargeable standard traffic sign placement；Clearing electric discharge standard sign specifically may be embodied as and electric discharge standard sign be set to 0.Set electric discharge standard sign specifically may be embodied as and electric discharge standard sign be set to 1；It is 0 that clearing rechargeable standard mark specifically may be embodied as rechargeable standard traffic sign placement.
Describe rechargeable standard mark and the set-up mode of electric discharge standard sign above for concrete numerical value, it will be appreciated by those of skill in the art that this description is only protection domain that is exemplary, that be not intended to limit the present invention.
Here, when rechargeable standard mark or electric discharge standard sign are set, the first SOC value is defined as the SOC calibration value of battery；When rechargeable standard mark and electric discharge standard sign are all without, when being set, calculating the first SOC value and the weighted mean of the second SOC value, weighted mean is defined as the SOC calibration value of battery.
In one embodiment, the weighted mean calculating the first SOC and the second SOC includes:
Interval based on the state-of-charge residing for the second SOC value, it is determined that the weight A (wherein A is more than 0 and less than or equal to 1) of the second SOC；(1-A) is defined as the weight of the first SOC；Calculating weighted mean S, S=SOC2*A+ (1-A) * SOC1, wherein the first SOC is SOC1；Second SOC is SOC2.Wherein, state-of-charge is relatively on the low side and relative higher interval, has relatively higher weight；And state-of-charge is positioned at the interval in the middle of relatively, has weight relatively on the low side.
Such as, it is possible to three state-of-charge intervals are set, respectively interval A:[0,30%]；Interval B: [30%～80%]；Interval C:(80%, 100], wherein the weight of interval A is 0.8, and the weight of interval B is 0.6, and the weight of interval C is 0.9.
Visible, interval A state-of-charge is relatively on the low side, and interval C state-of-charge is relatively higher, and therefore the weight of interval A and interval C is of a relatively high.That is, interval and relative higher interval relatively on the low side has of a relatively high weight.And, interval B state-of-charge is positioned in the middle of relatively, therefore the weight of interval B (namely comparing interval A and interval C, the weight of interval B is on the low side) relatively on the low side.That is, compare interval and relative higher interval relatively on the low side, be positioned at the interval in the middle of relatively and there is relatively low weight.
Citing 1:
When under carrying out multiple charge and discharge cycles all not up to discharge and recharge cut-off condition, it does not have SOC is calibrated, and now discharge and recharge calibration marker is 0.
Assuming that now SOC1 is 0.25, SOC2 is 0.15, then, SOC2 is positioned at interval A, and weight should be 0.8.
Therefore, SOC calibration value=0.15*0.8+0.25* (1-0.8)=0.17.
Citing 2:
When reaching charge cutoff condition when carrying out charge and discharge cycles, now charging calibration marker is 1.Assuming that now SOC1 is 0.25, SOC2 is 0.15.Therefore, SOC calibration value=SOC1=0.25.
Citing 3:
When reaching electric discharge cut-off condition when carrying out charge and discharge cycles, now electric discharge calibration marker is 1.Assuming that now SOC1 is 0.35, SOC2 is 0.15.Therefore, SOC calibration value=SOC1=0.35.
Citing 4:
When under carrying out multiple charge and discharge cycles all not up to discharge and recharge cut-off condition, it does not have SOC is calibrated, and now discharge and recharge calibration marker is 0.
Assuming that now SOC1 is 0.25, SOC2 is 0.65, then, SOC2 is positioned at interval B, and weight should be 0.6.
Therefore, SOC calibration value=0.65*0.6+0.25* (1-0.6)=0.49.
With concrete numerical value, the present invention is carried out exemplary description above.It will be appreciated by those of skill in the art that this description is only protection domain that is exemplary, that be not intended to limit the present invention.
Visible, in the present invention, when reaching charge cutoff condition in charging process, SOC be set as 1 and arrange charging calibration marker be 1 and remove electric discharge calibration marker be 0, when being again charged remove charging calibration marker be 0；When reach in discharge process electric discharge cut-off condition time, SOC be set as 0 and arrange electric discharge calibration marker be 1 and remove charging calibration marker be 0, when again discharging remove electric discharge calibration marker be 0.
In charge and discharge process, adopt ampere-hour integration method that SOC is calculated, obtain current value of calculation SOC1；Set up battery modules cell voltage compensating curve under different discharge-rates in systems, in order to obtain quiescent voltage corresponding under different discharge-rates；Set up the OCV-SOC curve under different temperatures in systems, in order to determine the actual value SOC2 of SOC according to OCV.According to battery behavior, the OCV-SOC curve of battery is divided into three sections, respectively low SOC section, interlude, high SOC section, different sections are arranged different weight 1, weight 2 and weight 3；When discharge and recharge calibration marker is set, adopt SOC1 as Practical Calculation SOC；When calibration marker is eliminated, it is first determined the weight of SOC2, then adopt SOC2 to be multiplied by this weight and SOC1 to be multiplied by (this weight of 1-) sum as calibration SOC.
Visible, present invention employs by cell voltage being compensated under different current conditions, and adopt open-circuit voltage method that SOC tabled look-up according to actual temperature or look into curve and calculate, obtain current SOC, and be calculated according to the weights that the different set of battery is different, it is possible to obtain the SOC that precision is of a relatively high.
Separately below the flow process applied the invention in charging process and discharge process is illustrated.
Fig. 2 is the calibration steps flow chart of the new energy car battery state-of-charge according to first embodiment of the invention.In fig. 2 it is described that the SOC calibration steps in the charging process of the application present invention.
As in figure 2 it is shown, the method includes:
Step 201: at battery charging process, utilizes ampere-hour integration method to determine the first SOC value of battery.
Step 202: in this charging process, determines the second SOC value of battery based on battery open circuit voltage.
Step 203: judge whether to reach charge cutoff condition, if reaching charge cutoff condition, then performs step 204 process ends, without reaching charge cutoff condition, then performs step 205 process ends.
Step 204: the first SOC value is defined as the SOC calibration value of battery.Such as, when in step 203 based on charging calibration marker be 1 judgement reach charge cutoff condition time, it is assumed that now SOC1 is 0.25, SOC2 is 0.15.Therefore, SOC calibration value=SOC1=0.25.
Step 205: calculate the first SOC value and the weighted mean of the second SOC value, is defined as the SOC calibration value of battery by this weighted mean.Such as, when in step 203 based on charging calibration marker be 0 judgement be not reaching to charge cutoff condition time, if SOC1 is 0.25, SOC2 be 0.15, SOC2 weight be 0.8.So, SOC calibration value=0.15*0.8+0.25* (1-0.8)=0.17.
Fig. 3 is the calibration steps flow chart of the new energy car battery state-of-charge according to second embodiment of the invention.In figure 3, the SOC calibration steps in the discharge process of the application present invention is described.
As it is shown on figure 3, the method includes:
Step 301: at battery discharge procedure, utilizes ampere-hour integration method to determine the first SOC value of battery.
Step 302: at this discharge process, determine the second SOC value of battery based on battery open circuit voltage.
Step 303: judge whether to reach electric discharge cut-off condition, if reaching electric discharge cut-off condition, then performs step 304 process ends, without reaching electric discharge cut-off condition, then performs step 305 process ends.
Step 304: the first SOC value is defined as the SOC calibration value of battery.Such as, when in step 303 based on electric discharge calibration marker be 1 judgement reach electric discharge cut-off condition time, it is assumed that now SOC1 is 0.35, SOC2 is 0.25.So, SOC calibration value=SOC1=0.35.
Step 305: calculate the first SOC value and the weighted mean of the second SOC value, is defined as the SOC calibration value of battery by this weighted mean.Such as, when in step 303 based on electric discharge calibration marker be 0 judgement be not reaching to electric discharge cut-off condition time, it is assumed that now SOC1 is 0.25, SOC2 is 0.65, and the weight of SOC2 is 0.6.So, SOC calibration value=0.65*0.6+0.25* (1-0.6)=0.49.
Based on foregoing description, embodiment of the present invention also proposed the calibrating installation of a kind of new energy car battery state-of-charge.
Fig. 4 is the calibrating installation structure chart of the new energy car battery state-of-charge according to the present invention.
As shown in Figure 4, this device 400 includes:
First SOC determines module 401, for, in the charging process or discharge process of battery, utilizing ampere-hour integration method to determine the first SOC of described battery；
Second SOC determines module 402, for, in described charging process or discharge process, determining the second SOC of described battery based on battery open circuit voltage；
Calibration value determines module 403, for based on described first SOC and described second SOC, it is determined that the state-of-charge calibration value of described battery.
In one embodiment, this device 400 also includes:
Arranging module 404, for when reaching charge cutoff condition in charging process, set rechargeable standard mark also resets electric discharge standard sign；When reaching electric discharge cut-off condition in discharge process, set electric discharge standard sign also resets rechargeable standard mark.
In one embodiment, calibration value determines module 403, for when rechargeable standard mark or electric discharge standard sign are set, the first SOC being defined as the state-of-charge calibration value of battery.
In one embodiment, calibration value determines module 403, for when rechargeable standard mark and electric discharge standard sign are all without, when being set, calculating the first SOC and the weighted mean of the second SOC, weighted mean being defined as the state-of-charge calibration value of battery.
In one embodiment, calibration value determines module 403, for interval based on the state-of-charge residing for the second SOC, it is determined that the weight A of the second SOC；(1-A) is defined as the weight of the first SOC；Calculating weighted mean S, S=SOC2*A+ (1-A) * SOC1, wherein the first SOC is SOC1；Second SOC is SOC2.
Can apply the invention in new-energy automobile, such as pure electric automobile, hybrid vehicle, fuel cell car etc..
In sum, in embodiments of the present invention, in the charging process or discharge process of battery, ampere-hour integration method is utilized to determine the first SOC value of battery；In charging process or discharge process, determine the second SOC value of battery based on battery open circuit voltage；Based on the first SOC value and the second SOC value, it is determined that the SOC calibration value of battery.Visible, the present invention is by considering the first SOC value and the weighted calculation of the second SOC value, it is possible to reduces SOC and calculates error, and improves the service efficiency of battery.
And, embodiment of the present invention is by arranging rechargeable standard mark and electric discharge standard sign, and under different current conditions voltage compensation to cell voltage, adopt open-circuit voltage method that the 2nd SOC is carried out computation of table lookup according to actual temperature, and determine different weights according to interval residing for the second SOC value, it is possible to obtain the SOC calibration value that precision is of a relatively high.
The a series of detailed description of those listed above is only for illustrating of the feasibility embodiment of the present invention; and and be not used to limit the scope of the invention; all without departing from the spiritual equivalent embodiments made of skill of the present invention or change; such as the combination of feature, segmentation or repetition, should be included within protection scope of the present invention.
Claims (10)
1. the calibration steps of a new energy car battery state-of-charge, it is characterised in that including:
In the charging process or discharge process of battery, ampere-hour integration method is utilized to determine the first SOC of described battery；
In described charging process or discharge process, determine the second SOC of described battery based on battery open circuit voltage；
Based on described first SOC and described second SOC, it is determined that the state-of-charge calibration value of described battery.
2. method according to claim 1, it is characterised in that the method also includes:
When reaching charge cutoff condition in described charging process, set rechargeable standard mark also resets electric discharge standard sign；
And/or
When reaching electric discharge cut-off condition in described discharge process, set electric discharge standard sign also resets rechargeable standard mark.
3. method according to claim 2, it is characterised in that
Described based on the first SOC with the second SOC, it is determined that the state-of-charge calibration value of described battery includes:
When described rechargeable standard mark or electric discharge standard sign are set, described first SOC is defined as the state-of-charge calibration value of described battery.
4. method according to claim 2, it is characterised in that
Described based on described first SOC with described second SOC, it is determined that the state-of-charge calibration value of described battery includes:
When described rechargeable standard mark and electric discharge standard sign are all without, when being set, calculating the first SOC and the weighted mean of the second SOC, described weighted mean is defined as the state-of-charge calibration value of described battery.
5. method according to claim 4, it is characterised in that the weighted mean of described calculating the first SOC and the second SOC includes:
Interval based on the state-of-charge residing for the second SOC, it is determined that the weight A of the second SOC；
(1-A) is defined as the weight of the first SOC；
Calculating weighted mean S, S=SOC2*A+ (1-A) * SOC1, wherein the first SOC is SOC1；Second SOC is SOC2.
6. the calibrating installation of a new energy car battery state-of-charge, it is characterised in that including:
First SOC determines module, for, in the charging process or discharge process of battery, utilizing ampere-hour integration method to determine the first SOC of described battery；
Second SOC determines module, for, in described charging process or discharge process, determining the second SOC of described battery based on battery open circuit voltage；
Calibration value determines module, for based on described first SOC and described second SOC, it is determined that the state-of-charge calibration value of described battery.
7. device according to claim 6, it is characterised in that also include:
Arranging module, for when reaching charge cutoff condition in described charging process, set rechargeable standard mark also resets electric discharge standard sign；And/or
When reaching electric discharge cut-off condition in described discharge process, set electric discharge standard sign also resets rechargeable standard mark.
8. device according to claim 7, it is characterised in that
Calibration value determines module, for when described rechargeable standard mark or electric discharge standard sign are set, described first SOC being defined as the state-of-charge calibration value of described battery.
9. device according to claim 7, it is characterised in that
Calibration value determines module, for when described rechargeable standard mark and electric discharge standard sign are all without, when being set, calculating the first SOC and the weighted mean of the second SOC, described weighted mean being defined as the state-of-charge calibration value of described battery.
10. device according to claim 9, it is characterised in that
Calibration value determines module, for interval based on the state-of-charge residing for the second SOC, it is determined that the weight A of the second SOC；(1-A) is defined as the weight of the first SOC；Calculating weighted mean S, S=SOC2*A+ (1-A) * SOC1, wherein the first SOC is SOC1；Second SOC is SOC2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610108318.0A CN105774574A (en) | 2016-02-26 | 2016-02-26 | New energy automobile battery state-of-charge calibration method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610108318.0A CN105774574A (en) | 2016-02-26 | 2016-02-26 | New energy automobile battery state-of-charge calibration method and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105774574A true CN105774574A (en) | 2016-07-20 |
Family
ID=56403769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610108318.0A Pending CN105774574A (en) | 2016-02-26 | 2016-02-26 | New energy automobile battery state-of-charge calibration method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105774574A (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106646243A (en) * | 2016-11-09 | 2017-05-10 | 珠海格力电器股份有限公司 | Storage battery state of charge calculation method and device |
| CN106772072A (en) * | 2016-12-06 | 2017-05-31 | 奇瑞汽车股份有限公司 | A kind of SOC estimation method and device based on battery behavior curve |
| CN106908730A (en) * | 2017-01-19 | 2017-06-30 | 浙江零跑科技有限公司 | A kind of method for estimating lithium battery OCV_SOC calibration curve SOC errors |
| CN107144795A (en) * | 2017-05-12 | 2017-09-08 | 四川力垦锂动力科技有限公司 | A kind of lithium battery dump energy statistical method used for electric vehicle |
| CN107192955A (en) * | 2017-05-12 | 2017-09-22 | 四川力垦锂动力科技有限公司 | Lithium battery SOC statistical systems used for electric vehicle |
| WO2018145399A1 (en) * | 2017-02-10 | 2018-08-16 | 宁德时代新能源科技股份有限公司 | Method for calibrating state of charge of energy storage system and device |
| CN108931726A (en) * | 2017-05-26 | 2018-12-04 | 神华集团有限责任公司 | SOC determines method and device, battery management system |
| CN108931739A (en) * | 2018-08-24 | 2018-12-04 | 智车优行科技（上海）有限公司 | The determination method, apparatus and automobile of battery system SOC estimation error |
| CN109291829A (en) * | 2018-09-18 | 2019-02-01 | 重庆长安汽车股份有限公司 | A kind of charge control method, a kind of electric car and its charging system |
| CN109407007A (en) * | 2018-12-24 | 2019-03-01 | 广东省智能制造研究所 | A kind of battery charge state detection method and device |
| CN109591649A (en) * | 2019-01-07 | 2019-04-09 | 新乡学院 | AGV power-supply system based on RFID communication and Internet technology |
| CN109828215A (en) * | 2019-02-26 | 2019-05-31 | 清华大学 | A kind of method and system promoting battery cell SOC estimation precision |
| CN109991555A (en) * | 2019-04-18 | 2019-07-09 | 深圳市国新动力科技有限公司 | A kind of tender correction method of the battery pack charging SOC and SOC that discharges |
| CN111175657A (en) * | 2019-11-25 | 2020-05-19 | 南京金邦信息科技有限公司 | SOC estimation system and calibration method of water rescue robot |
| CN111679200A (en) * | 2020-06-03 | 2020-09-18 | 广州小鹏汽车科技有限公司 | Battery state of charge calibration method and device and vehicle |
| CN112406628A (en) * | 2019-08-21 | 2021-02-26 | 丰田自动车株式会社 | Control device |
| CN114371408A (en) * | 2022-01-26 | 2022-04-19 | 上海玫克生储能科技有限公司 | Estimation method of battery charge state, and extraction method and device of charging curve |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1610986A (en) * | 2001-12-27 | 2005-04-27 | 松下电动车辆能源股份有限公司 | Method and device for estimating remaining capacity of secondary cell, battery pack system, and electric vehicle |
| US20050154544A1 (en) * | 2004-01-14 | 2005-07-14 | Fuji Jukogyo Kabushiki Kaisha | System for calculating remaining capacity of energy storage device |
| CN103344919A (en) * | 2013-06-26 | 2013-10-09 | 天津市松正电动汽车技术股份有限公司 | Method for calibrating SOC of lithium-ion battery |
| CN203786271U (en) * | 2014-04-22 | 2014-08-20 | 桂林电子科技大学 | Device for testing state of charge (SOC) of electric automobile battery pack |
| WO2014202684A2 (en) * | 2013-06-18 | 2014-12-24 | Vlaamse Instelling Voor Technologisch Onderzoek Nv (Vito Nv) | Monitoring charge stored in a battery |
| CN104360285A (en) * | 2014-11-28 | 2015-02-18 | 山东鲁能智能技术有限公司 | Battery capacity correction method based on improved ampere-hour integral method |
-
2016
- 2016-02-26 CN CN201610108318.0A patent/CN105774574A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1610986A (en) * | 2001-12-27 | 2005-04-27 | 松下电动车辆能源股份有限公司 | Method and device for estimating remaining capacity of secondary cell, battery pack system, and electric vehicle |
| US20050154544A1 (en) * | 2004-01-14 | 2005-07-14 | Fuji Jukogyo Kabushiki Kaisha | System for calculating remaining capacity of energy storage device |
| WO2014202684A2 (en) * | 2013-06-18 | 2014-12-24 | Vlaamse Instelling Voor Technologisch Onderzoek Nv (Vito Nv) | Monitoring charge stored in a battery |
| CN103344919A (en) * | 2013-06-26 | 2013-10-09 | 天津市松正电动汽车技术股份有限公司 | Method for calibrating SOC of lithium-ion battery |
| CN203786271U (en) * | 2014-04-22 | 2014-08-20 | 桂林电子科技大学 | Device for testing state of charge (SOC) of electric automobile battery pack |
| CN104360285A (en) * | 2014-11-28 | 2015-02-18 | 山东鲁能智能技术有限公司 | Battery capacity correction method based on improved ampere-hour integral method |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106646243A (en) * | 2016-11-09 | 2017-05-10 | 珠海格力电器股份有限公司 | Storage battery state of charge calculation method and device |
| CN106772072B (en) * | 2016-12-06 | 2019-09-10 | 奇瑞汽车股份有限公司 | A kind of SOC estimation method and device based on battery behavior curve |
| CN106772072A (en) * | 2016-12-06 | 2017-05-31 | 奇瑞汽车股份有限公司 | A kind of SOC estimation method and device based on battery behavior curve |
| CN106908730A (en) * | 2017-01-19 | 2017-06-30 | 浙江零跑科技有限公司 | A kind of method for estimating lithium battery OCV_SOC calibration curve SOC errors |
| WO2018145399A1 (en) * | 2017-02-10 | 2018-08-16 | 宁德时代新能源科技股份有限公司 | Method for calibrating state of charge of energy storage system and device |
| CN107144795A (en) * | 2017-05-12 | 2017-09-08 | 四川力垦锂动力科技有限公司 | A kind of lithium battery dump energy statistical method used for electric vehicle |
| CN107192955A (en) * | 2017-05-12 | 2017-09-22 | 四川力垦锂动力科技有限公司 | Lithium battery SOC statistical systems used for electric vehicle |
| CN108931726A (en) * | 2017-05-26 | 2018-12-04 | 神华集团有限责任公司 | SOC determines method and device, battery management system |
| CN108931739A (en) * | 2018-08-24 | 2018-12-04 | 智车优行科技（上海）有限公司 | The determination method, apparatus and automobile of battery system SOC estimation error |
| CN109291829A (en) * | 2018-09-18 | 2019-02-01 | 重庆长安汽车股份有限公司 | A kind of charge control method, a kind of electric car and its charging system |
| CN109407007A (en) * | 2018-12-24 | 2019-03-01 | 广东省智能制造研究所 | A kind of battery charge state detection method and device |
| CN109591649A (en) * | 2019-01-07 | 2019-04-09 | 新乡学院 | AGV power-supply system based on RFID communication and Internet technology |
| CN109591649B (en) * | 2019-01-07 | 2021-10-29 | 新乡学院 | AGV power supply system based on RFID communication and internet technology |
| CN109828215A (en) * | 2019-02-26 | 2019-05-31 | 清华大学 | A kind of method and system promoting battery cell SOC estimation precision |
| CN109991555A (en) * | 2019-04-18 | 2019-07-09 | 深圳市国新动力科技有限公司 | A kind of tender correction method of the battery pack charging SOC and SOC that discharges |
| CN112406628A (en) * | 2019-08-21 | 2021-02-26 | 丰田自动车株式会社 | Control device |
| CN112406628B (en) * | 2019-08-21 | 2023-12-05 | 丰田自动车株式会社 | Control device for charging and discharging of vehicle-mounted battery |
| CN111175657A (en) * | 2019-11-25 | 2020-05-19 | 南京金邦信息科技有限公司 | SOC estimation system and calibration method of water rescue robot |
| CN111679200A (en) * | 2020-06-03 | 2020-09-18 | 广州小鹏汽车科技有限公司 | Battery state of charge calibration method and device and vehicle |
| CN111679200B (en) * | 2020-06-03 | 2023-02-10 | 广州小鹏汽车科技有限公司 | Battery state of charge calibration method and device and vehicle |
| CN114371408A (en) * | 2022-01-26 | 2022-04-19 | 上海玫克生储能科技有限公司 | Estimation method of battery charge state, and extraction method and device of charging curve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105774574A (en) | New energy automobile battery state-of-charge calibration method and device | |
| CN102230953B (en) | Method for predicting left capacity and health status of storage battery | |
| CN103529396B (en) | A kind of initial value of stage of charge of high-accuracy evaluation method | |
| CN102756661B (en) | Determination method and device for state of charge of vehicular battery | |
| Alves et al. | Indirect methodologies to estimate energy use in vehicles: Application to battery electric vehicles | |
| CN107861075B (en) | Method for determining SOP of power battery | |
| CN103675706B (en) | A kind of power battery electric charge quantity estimation method | |
| CN102540096B (en) | Self-correction method for remaining capacity estimation of lithium iron phosphate power battery | |
| Souffran et al. | Simulation of real-world vehicle missions using a stochastic Markov model for optimal powertrain sizing | |
| CN102608540B (en) | Coulomb efficiency measuring method used for SOC (system-on-chip) evaluation of power battery | |
| CN103809125B (en) | The residue loading capacity method of estimation of lithium ion battery and system | |
| CN104360286B (en) | Lithium ion battery charge state estimation modification method | |
| CN105974323A (en) | Algorithm model improving electric automobile SOC estimation precision | |
| CN105425154B (en) | A kind of method of the state-of-charge for the power battery pack for estimating electric automobile | |
| CN105388426A (en) | Method and apparatus for estimating state of health (SOH) of battery | |
| CN106291378A (en) | A kind of measuring method of electric automobile power battery SOH | |
| CN103616647A (en) | Battery remaining capacity estimation method for electric car battery management system | |
| EP3594705B1 (en) | Method and device for estimating service capacity and state of health of minimum battery cell and battery system | |
| CN106154176A (en) | Battery SOC detection method and device | |
| CN103267953B (en) | The evaluation method of a kind of lithium iron phosphate dynamic battery SOC | |
| CN106772104A (en) | A kind of electrokinetic cell SOC value evaluation method | |
| CN105548906A (en) | Method for dynamically estimating battery state of charge | |
| CN103176137B (en) | Battery pack health condition evaluation method based on battery SOC (state of charge) inhomogeneity | |
| CN109975715B (en) | Method for obtaining residual electric quantity of lithium ion battery module of electric vehicle | |
| CN104749524A (en) | Battery management system power calculation method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160720 |
|
| RJ01 | Rejection of invention patent application after publication |