CN106100067A - A kind of charging electric vehicle and charge computational methods remaining time and device - Google Patents
A kind of charging electric vehicle and charge computational methods remaining time and device Download PDFInfo
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- CN106100067A CN106100067A CN201610662092.9A CN201610662092A CN106100067A CN 106100067 A CN106100067 A CN 106100067A CN 201610662092 A CN201610662092 A CN 201610662092A CN 106100067 A CN106100067 A CN 106100067A
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
-
- 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
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- 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
-
- 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
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
-
- 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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
Abstract
The present invention provides a kind of charging electric vehicle and charging computational methods remaining time and device, according to formula TR=Tmax‑TfitCalculate T remaining time of chargingR；Wherein TmaxFor the moment of charging complete in record of charging；If the highest battery cell voltage is V in present battery caseSMax, TfitV is reached for the ceiling voltage of battery case battery cell in record of chargingSMaxMoment.A kind of charging electric vehicle of present invention offer and charge computational methods remaining time and device, by the data matching by battery cell voltage the highest in present battery case Yu charge history record, thus accurately calculate remaining time of charging.
Description
Technical field
The present invention relates to Rechargeable vehicle charging technique field, be specifically related to a kind of charging electric vehicle and charge remaining time
Computational methods and device.
Background technology
At present, the energy of conventional fuel oil automobile relies primarily in oil, and the tail gas of oil shortage and fuel emission is to ring
Border causes severe contamination to make the mankind the most urgently study the green traffic instrument made new advances.As green traffic instrument, electricity
Motor-car not only energy-saving effect is notable, and comprehensive utilization of energy rate increases substantially, and tail gas zero-emission, environmental benefit is obvious,
Therefore the use of electric vehicle is more and more extensive.
The power of electric vehicle comes from electrokinetic cell, needs to fill electric vehicle when the electricity of electrokinetic cell exhausts
Electricity.In charging process, in order to realize the overall monitor to charging process, need to calculate remaining time of charging.
Charging remaining time, refer to when battery is in charged state, charging device by algorithm be battery meter calculate from
Current electric quantity is charged to the time needed for the electricity of 100%.Existing charging device is main to the computational methods of charging remaining time
There are two kinds: the first charging computational methods remaining time is to obtain charging device the electricity punching 0% of battery to be charged to for the first time
The charging interval of 100%, according to the charging interval needed for the charging interval unit of account electricity obtained, and according to unit quantity of electricity institute
The charging interval needed and battery current electric quantity, obtain the charging remaining time of this battery；The second charging calculating side's remaining time
Method be dispatch from the factory according to battery before the electricity preset with reference to information and the current electric quantity of battery, when calculating the charging residue of this power plant
Between.
For separate-box type charger, it is judged that the method for battery case whether charging complete is: when the highest battery cell of battery case
When voltage reaches setting value, charger is judged as battery case charging complete, and stops charging.Therefore, if using battery electric quantity
As judge battery case charging remaining time benchmark, then the charging obtained is not accurate enough for remaining time.
Summary of the invention
The present invention provides a kind of charging electric vehicle and charging computational methods remaining time and device, is used for solving above-mentioned adopting
With battery electric quantity as judging the benchmark of battery case charge completion time, and cause when using separate-box type charger to electricity
Pond case inaccurate problem charging remaining time.
A kind of charging electric vehicle method, comprises the steps:
(1) connect charger, charge for battery case；
(2) voltage of battery cell in detection battery case, if the ceiling voltage of battery cell is V in present battery caseSMax；
(3) according to formula tR=Tmax-TfitCalculate t remaining time of chargingR；
Wherein TmaxFor the moment of charging complete, T in record of chargingfitFor battery case battery cell the highest in record of charging
Voltage reaches VSMaxMoment；Described record of charging includes the highest electricity of cell in per interval t record battery case once
Pressure and the moment of correspondence.
Further, t=30s.
Further, in record of charging, between the adjacent charging moment, the battery cell voltage time used with charging it
Between be linear relationship.
Further, as ceiling voltage V battery cell in present battery case being detectedSMaxIn charge history record not
In the presence of, with V in lookup record of chargingSMaxImmediate magnitude of voltage VHAnd VL, and charging start time T0, wherein VL＜ VSMax
＜ VH, VHAnd VLMoment corresponding in record of charging is THAnd TL, according to formulaCalculate
tfit, further according to Tfit=T0+tfitCalculate Tfit；
Wherein tH=TH-T0,tL=TL-T0。
A kind of electric motor car charging computational methods remaining time, comprise the steps:
(1) voltage of battery cell in detection battery case, if the ceiling voltage of battery cell is V in present battery caseSMax；
(2) according to formula tR=Tmax-TfitCalculate t remaining time of chargingR；
Wherein TmaxFor the moment of charging complete, T in record of chargingfitFor battery case battery cell the highest in record of charging
Voltage reaches VSMaxMoment；Described record of charging includes the highest electricity of cell in per interval t record battery case once
Pressure and the moment of correspondence.
Further, t=30s.
Further, in record of charging, between the adjacent charging moment, the battery cell voltage time used with charging it
Between be linear relationship.
Further, as ceiling voltage V battery cell in present battery case being detectedSMaxIn charge history record not
In the presence of, with V in lookup record of chargingSMaxImmediate magnitude of voltage VHAnd VL, and charging start time T0, wherein VL＜ VSMax
＜ VH, VHAnd VLMoment corresponding in record of charging is THAnd TL, according to formulaCalculate
tfit, further according to Tfit=T0+tfitCalculate Tfit；
Wherein tH=TH-T0,tL=TL-T0。
A kind of electric motor car charging calculates device, including such as lower module remaining time:
The voltage of battery cell in detection battery case, if the ceiling voltage of battery cell is V in present battery caseSMaxMould
Block；
According to formula tR=Tmax-TfitCalculate t remaining time of chargingRModule；
Wherein TmaxFor the moment of charging complete, T in record of chargingfitFor battery case battery cell the highest in record of charging
Voltage reaches VSMaxMoment；Described record of charging includes the highest electricity of cell in per interval t record battery case once
Pressure and the moment of correspondence.
Further, in record of charging, between the adjacent charging moment, the battery cell voltage time used with charging it
Between be linear relationship；
As ceiling voltage V battery cell in present battery case being detectedSMaxIn charge history record not in the presence of, look into
Look in record of charging with VSMaxImmediate magnitude of voltage VHAnd VL, and charging start time T0, wherein VL＜ VSMax＜ VH, VHWith
VLMoment corresponding in record of charging is THAnd TL, according to formulaCalculate tfit, further according to
Tfit=T0+tfitCalculate Tfit；
Wherein tH=TH-T0,tL=TL-T0。
A kind of charging electric vehicle of present invention offer and charge computational methods remaining time and device, by by current electricity
In the case of pond, the highest battery cell voltage and the data matching in record of charging, obtain remaining time of charging.Owing to separate-box type charges
Machine judge the benchmark of battery case charging complete be in battery case battery cell voltage, therefore when use separate-box type charger be
When battery case is charged, technical scheme provided by the present invention can accurately calculate remaining time of charging.
In record of charging, in record battery case, the time interval of battery cell is 30s, it is possible to for calculating in charging process
Charging provides basis for estimation accurately remaining time.If the time interval of record is the biggest, when can affect calculating charging residue
Between accuracy；If the time interval of record is too small, then it is likely to occur same battery cell voltage corresponding multiple charging moment
Situation, thus impact to TfitReading.
In record of charging, owing between the adjacent charging moment, interval time is the shortest, therefore can be by time period
The voltage of battery cell and charging interval linear correlation, when the ceiling voltage of the battery cell detected is not remembered at record of charging
During load, charging moment T can be calculatedfit。
Accompanying drawing explanation
Fig. 1 is the system diagram of charging system for electric automobile in embodiment；
Fig. 2 is the flow chart of charging electric vehicle method in embodiment.
Detailed description of the invention
The present invention provides a kind of charging electric vehicle and charging computational methods remaining time and device, with battery in battery case
On the basis of the voltage of monomer, by the data matching by the ceiling voltage of battery cell in present battery case Yu record of charging,
To remaining time of charging.Owing to separate-box type charger judges that the benchmark of battery case charging complete is that in battery case battery cell is
High voltage, so for separate-box type charger, with use battery electric quantity as compared with judging the benchmark of charging remaining time, this
The bright charging obtained is more accurate for remaining time.
The charging system for electric automobile provided in the present embodiment is as it is shown in figure 1, include charging control system of electric automobile
101, charging controls charger 201, centralized monitoring system 501, battery case 301 and monitoring system for power distribution networks 401.The most electronic
Vehicle charging control system 101 includes load monitoring 111, spatial load forecasting 112, Charge Management 113, charging controller 114 and
Automatic charging strategy 115.Charging controls charger 201 and includes communication network management 211, separate-box type charger 212, charging rack 213.
Charging system of electric powercar 101 obtains Real-time Load information from monitoring system for power distribution networks 401, accepts filling of centralized monitoring system 501
Electric control order, issues charge command to charger 201.Charger 201 charges to battery case 301.
Charging method embodiment:
A kind of charging electric vehicle method flow that the present embodiment provides is as in figure 2 it is shown, connect at battery case to be charged
After charger, execution following steps:
(1) it is that battery case to be charged is charged；
(2) battery case charging start time T in the record of charging of battery case is read0With complete moment Tmax；
(3) detect and record the voltage of battery cell in battery case every 30s, use VSMaxRepresent the highest voltage
Value；
(4) searching the battery cell ceiling voltage of battery case in record of charging is VSMaxTime corresponding charging moment Tfit；
If the ceiling voltage V of battery cellSMaxCharge history record does not exists, then searches in charge history record
With VSMaxImmediate magnitude of voltage VHAnd VL, wherein VL＜ VSMax＜ VH, VHAnd VLMoment corresponding in record of charging is THWith
TL, according to formulaCalculate tfit, further according to Tfit=T0+tfitCalculate Tfit；
Wherein tH=TH-T0,tL=TL-T0。
(5) according to formula TR=Tmax-TfitCalculate T remaining time of chargingR。
In the record of charging of the present embodiment, the voltage of battery cell in 30s record one-shot battery case；As other
Embodiment, can select the time interval of record according to the characteristic of battery cell in battery case, as charging electricity faster
Pond monomer, can detect once every 10s or 20s.
In the present embodiment, owing to the time at intervals of record battery cell record of charging is shorter, it can thus be assumed that when this section
Interior is linear relationship between charging interval and battery cell voltage.The ceiling voltage V of battery cell in present battery caseSMax?
In record of charging not in the presence of, use formulaCalculating time tfit, then calculate Tfit.As
Other embodiments, available other represent that the formula of linear relationship calculates time tfit, as
With the most concrete charging process, the present embodiment is illustrated below.
First record of charging is read, as shown in table 1.
Table 1
Wherein T0It is 2016/5/17 15:10:01, TmaxIt is 2016/5/17 17:38:12, if be detected that present battery
In case, the highest battery cell voltage is 3.385V, then TfitIt is 2016/5/17 17:06:49, according to tR=Tmax-TfitCan count
Calculate t remaining time of chargingRFor 31:23, i.e. 31 points 23 seconds.
During if be detected that the highest battery cell voltage is 3.386V in present battery case, 1 can obtain by tabling look-up, VHFor
3.387V, VLFor 3.385V, THIt is 2016/5/17 17:07:19, TLIt is 2016/5/17 17:06:49, according to the electricity of high monomer
Linear relationship between pressure and data record time can obtain, TfitIt is 2016/5/17 17:07:04, further according to tR=Tmax-Tfit
T remaining time of charging can be calculatedRFor 31:08, i.e. 31 points 08 second.
The certainty of measurement of battery cell voltage and battery case high monomer voltage can be up to 0.001V, and is directly to measure
, there is not theoretic deviation in amount.And SOC not one can directly measure the amount obtained, each battery producer use calculating
The method of SOC is different, and the result obtained also varies, and SOC is difficult to accomplish the linear of electricity actual with battery at present
Relation, so it is generally acknowledged that SOC only possesses reference value.And separate-box type charger judges that the foundation stopping charging is battery case
In the voltage of the highest battery cell, therefore, if using SOC as the benchmark calculating charging remaining time.So for branch mailbox
Formula charger, what the present invention provided uses the benchmark that in battery case, the voltage of the highest battery cell charges remaining time as calculating
Method, the charging drawn is more accurate for remaining time.
Charging computational methods embodiment remaining time:
The method calculated remaining time of charging in the present embodiment is charged remaining time in above-mentioned charging method embodiment
Computational methods are identical, described in detail, the most seldom state.
Device embodiment:
A kind of electric motor car charging calculates device, including such as lower module remaining time:
The voltage of battery cell in detection battery case, if the ceiling voltage of battery cell is V in present battery caseSMaxMould
Block；
According to formula tR=Tmax-TfitCalculate t remaining time of chargingRModule；
Wherein TmaxFor the moment of record of charging charging complete, TfitFor the highest electricity of battery case battery cell in record of charging
Pressure reaches VSMaxMoment；Described record of charging includes cell ceiling voltage in per interval t record battery case once
And the moment of correspondence.
Device embodiment of the present invention, actually realizes the software architecture of above method embodiment, mould therein
Block is software module, is programmed obtaining according to said method, operates on the controller of charging system for electric automobile.
It is presented above the detailed description of the invention that the present invention relates to, but the present invention is not limited to described embodiment.
Under the thinking that the present invention provides, use the mode being readily apparent that to those skilled in the art to the skill in above-described embodiment
Art means carry out converting, replace, revise, and the effect played is essentially identical with the relevant art means in the present invention, realize
Goal of the invention the most essentially identical, so formed technical scheme above-described embodiment is finely adjusted formation, this technology
Scheme still falls within protection scope of the present invention.
Claims (10)
1. a charging electric vehicle method, it is characterised in that comprise the steps:
(1) connect charger, charge for battery case；
(2) voltage of battery cell in detection battery case, if the ceiling voltage of battery cell is V in present battery caseSMax；
(3) according to formula tR=Tmax-TfitCalculate t remaining time of chargingR；
Wherein TmaxFor the moment of charging complete, T in record of chargingfitFor the ceiling voltage of battery case battery cell in record of charging
Reach VSMaxMoment；Described record of charging include in per interval t record battery case once cell ceiling voltage and
The corresponding moment.
A kind of charging electric vehicle method the most according to claim 1, it is characterised in that t=30s.
A kind of charging electric vehicle method the most according to claim 1, it is characterised in that in record of charging, adjacent
The charging moment between, be linear relationship between battery cell voltage and charging time used.
A kind of charging electric vehicle method the most according to claim 3, it is characterised in that when detecting in present battery case
The ceiling voltage V of battery cellSMaxIn charge history record not in the presence of, search in record of charging with VSMaxImmediate electricity
Pressure value VHAnd VL, and charging start time T0, wherein VL＜ VSMax＜ VH, VHAnd VLMoment corresponding in record of charging is TH
And TL, according to formulaCalculate tfit, further according to Tfit=T0+tfitCalculate Tfit；
Wherein tH=TH-T0,tL=TL-T0。
5. electric motor car charging computational methods remaining time, it is characterised in that comprise the steps:
(1) voltage of battery cell in detection battery case, if the ceiling voltage of battery cell is V in present battery caseSMax；
(2) according to formula tR=Tmax-TfitCalculate t remaining time of chargingR；
Wherein TmaxFor the moment of charging complete, T in record of chargingfitFor the ceiling voltage of battery case battery cell in record of charging
Reach VSMaxTime moment；Described record of charging includes cell ceiling voltage in per interval t record battery case once
And the moment of correspondence.
A kind of electric motor car charging computational methods remaining time the most according to claim 5, it is characterised in that t=30s.
A kind of electric motor car charging computational methods remaining time the most according to claim 5, it is characterised in that at record of charging
In, between the adjacent charging moment, it is linear relationship between battery cell voltage and charging time used.
8. a kind of electric motor car charging computational methods remaining time stated according to claim 7, it is characterised in that current when detecting
The ceiling voltage V of battery cell in battery caseSMaxIn charge history record not in the presence of, search in record of charging with VSMax?
Close magnitude of voltage VHAnd VL, and charging start time T0, wherein VL＜ VSMax＜ VH, VHAnd VLCorrespondence in record of charging
Moment is THAnd TL, according to formulaCalculate tfit, further according to Tfit=T0+tfitCalculate Tfit；
Wherein tH=TH-T0,tL=TL-T0。
9. an electric motor car charging calculates device remaining time, it is characterised in that include such as lower module:
The voltage of battery cell in detection battery case, if the ceiling voltage of battery cell is V in present battery caseSMaxModule；
According to formula tR=Tmax-TfitCalculate t remaining time of chargingRModule；
Wherein TmaxFor the moment of charging complete, T in record of chargingfitFor the ceiling voltage of battery case battery cell in record of charging
Reach VSMaxTime moment；Described record of charging includes cell ceiling voltage in per interval t record battery case once
And the moment of correspondence.
A kind of electric motor car charging the most according to claim 9 calculates device remaining time, it is characterised in that when detecting
The ceiling voltage V of battery cell in present battery caseSMaxIn charge history record not in the presence of, search in record of charging with
VSMaxImmediate magnitude of voltage VHAnd VL, and charging start time T0, wherein VL＜ VSMax＜ VH, VHAnd VLIn record of charging
The corresponding moment is THAnd TL, according to formulaCalculate tfit, further according to Tfit=T0+tfitCalculate
Go out Tfit；
Wherein tH=TH-T0,tL=TL-T0。
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111422092A (en) * | 2020-04-17 | 2020-07-17 | 肇庆小鹏汽车有限公司 | Charging remaining time calculation method and device and storage medium |
| CN113391221A (en) * | 2021-04-27 | 2021-09-14 | 浙江合众新能源汽车有限公司 | Charging remaining time estimation method and system |
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| CN1777311A (en) * | 2004-11-17 | 2006-05-24 | 乐金电子(中国)研究开发中心有限公司 | Mobile communication terminal of displaying time that cell needs to finish charging and displaying method thereof |
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| CN111422092A (en) * | 2020-04-17 | 2020-07-17 | 肇庆小鹏汽车有限公司 | Charging remaining time calculation method and device and storage medium |
| CN111422092B (en) * | 2020-04-17 | 2021-09-10 | 肇庆小鹏汽车有限公司 | Charging remaining time calculation method and device and storage medium |
| CN113391221A (en) * | 2021-04-27 | 2021-09-14 | 浙江合众新能源汽车有限公司 | Charging remaining time estimation method and system |
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Application publication date: 20161109 |