CN107240728A - A kind of charging interval shows system - Google Patents
A kind of charging interval shows system Download PDFInfo
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- CN107240728A CN107240728A CN201710604705.8A CN201710604705A CN107240728A CN 107240728 A CN107240728 A CN 107240728A CN 201710604705 A CN201710604705 A CN 201710604705A CN 107240728 A CN107240728 A CN 107240728A
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- 238000007600 charging Methods 0.000 title claims abstract description 216
- 230000005611 electricity Effects 0.000 claims abstract description 158
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- 230000000977 initiatory effect Effects 0.000 claims abstract description 6
- 238000005070 sampling Methods 0.000 claims description 114
- 238000012937 correction Methods 0.000 claims description 40
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- 238000005859 coupling reaction Methods 0.000 claims description 7
- 238000004364 calculation method Methods 0.000 claims description 6
- 238000010277 constant-current charging Methods 0.000 claims description 4
- 230000035945 sensitivity Effects 0.000 claims description 4
- 238000010280 constant potential charging Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000007726 management method Methods 0.000 abstract description 25
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- 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
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- 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]
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- 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
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/488—Cells or batteries combined with indicating means for external visualization of the condition, e.g. by change of colour or of light density
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- 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
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- 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
- 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
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- General Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Transportation (AREA)
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- Secondary Cells (AREA)
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Abstract
The present invention is applied to charging display field and shows system there is provided a kind of charging interval, and the system includes：Battery management unit, for obtaining charging temperature during battery charging in real time, the current initiation of charge amount of battery, and the degree of aging of battery, charging interval estimates unit, the current charging temperature of rechargeable battery sent based on battery management unit, battery currently originates electricity, and the degree of aging of rechargeable battery, optimal charge curve is matched from the multigroup charging curve prestored, time needed for charging to target electricity from starting electricity is estimated based on optimal charge curve, and by target electricity and charging interval of target electricity is charged to battery management unit, battery management unit is by target electricity and charges to charging interval of target electricity and sends to display unit and shown, the time that charging curve record is charged to needed for each electricity, user is that would know that the time for charging to institute's subfam. Spiraeoideae by optimal charge curve, it is easy to make rational planning for and uses car.
Description
Technical field
System is shown the invention belongs to the display field that charges, more particularly to a kind of charging interval.
Background technology
Electric automobile and plug-in hybrid-power automobile become more and more popular these years, but are due to the continuation of the journey of electric automobile
Can mileage be limited, for programme path and judge complete some plan of travel, and what driver needed accurately to know battery can
With energy, i.e. SOC (state of charge) state-of-charges and SOE (state of energy).And charging is once needed, that
How long flower charges, and how to arrange, also influences whether to be planned with car, because with spending the car in a few minutes to Automobile drive
Oiling is compared, and charging electric vehicle generally requires the time waited in units of hour, and existing charging display interface is shown
There are the information such as charging current, fully charged required remaining time, often can not all show the time charged to needed for different SOC,
Such as it is charged to for 50%, 80% time, so not only contributes to plan charging plan, is also beneficial to plan electricity consumption plan.
The content of the invention
The embodiment of the present invention provides a kind of charging interval display system, it is intended to shows and is charged to not on charging display interface
Time needed for same SOC.
The present invention is achieved in that a kind of charging interval shows system, and the system includes：Battery management unit, institute
Stating battery management unit is used to obtain charging temperature when battery charges, the current initiation of charge amount of battery and battery in real time
Degree of aging, the system also includes：Charging interval estimates unit, and display unit, and the charging interval estimates unit and institute
Display unit is stated to be connected with the battery management unit；
The charging interval estimates unit based on the current charging temperature of rechargeable battery, electricity that the battery management unit is sent
Pond currently originates the degree of aging of electricity and rechargeable battery, matches and most preferably fills from the multigroup charging curve prestored
Electric curve, estimates the time charged to from the starting electricity needed for target electricity based on the optimal charge curve, and by institute
State target electricity and charge to charging interval of target electricity to the battery management unit, multigroup charging curve refers to
What is obtained under experiment condition originates electricity based on different cell degradation extent index, different charging temperature samplings and difference
Multigroup charging curve；
The battery management unit is used for target electricity and charges to charging interval of target electricity and send single to display
Member is shown；
The cell degradation degree is characterized with the number of times of battery cycle charge-discharge.
Further, the system includes：CAN communication unit, the CAN communication unit respectively with the battery management list
First and described charging pile connection, the battery management unit is based on the CAN communication unit by display information in the charging pile
It is upper synchronously to be shown.
Further, when the target electricity is multiple values, the display unit is in the way of form or two-dimentional line chart
Target electricity and the charging interval for charging to target electricity are shown.
Further, the charging interval estimates unit and included：Parameter coupling subelement, and match son singly with the parameter
The optimal charge curve one of member connection obtains subelement and optimal charge curve two obtains subelement, with the optimal charge curve
One obtains the estimated time reading subelement of subelement and the optimal charge curve two acquisition subelement connection, and with estimating
Time reads the estimated time output subelement of subelement connection,
The parameter coupling subelement, for by present battery degree of aging, current charging temperature, current starting electricity with
Cell degradation degree sampling parameter, temperature sampling parameter and starting electricity sampling parameter are matched；
If present battery degree of aging, current charging temperature and current starting electricity are complete with corresponding sampling parameter
Full matching, the optimal charge curve one obtains subelement then by present battery degree of aging, current charging temperature and current
The corresponding charging curve of starting electricity is sent to the estimated time as optimal charge curve one, and by optimal charge curve one
Read subelement；
If present battery degree of aging, current charging temperature and current starting electricity and corresponding sampling parameter are endless
Full matching is mismatched, and it is old that the acquisition of optimal charge curve two subelement obtains the current charging temperature of deviation, present battery respectively
Change degree and three minimum sampling parameters of current starting electricity, the corresponding charging curve of three sampling parameters is
Optimal charge curve two, and optimal charge curve two is sent to estimated time reading subelement；
The estimated time reads subelement, direct based on the optimal charge curve one or the optimal charge curve two
The charging interval discreet value from starting SOC to target SOC is read, and the charging interval discreet value directly read is sent out
Deliver to the estimated time output subelement；
The estimated time output subelement is used to the estimated time reading the charging interval that subelement is sent
Discreet value is exported to battery management unit.
Further, the charging interval estimates unit and included：Correction time computation subunit, the correction time calculates
Submodule obtains subelement with the optimal charge curve two and is connected and estimated time output subelement connection；
The correction time computation subunit calculates cell degradation degree, current charging temperature and current starting electricity and institute
State the estimated time correction value that the deviation of the sampling parameter of optimal charge curve two is introduced；And send the estimated time correction value
Subelement is exported to the estimated time；
The estimated time exports subelement, for be read into subelement from the optimal charge curve estimated time
The estimated time correction value sum that the charging interval discreet value directly read on two is calculated with the correction time computation subunit
Output to the battery management unit, or by the estimated time read subelement from the optimal charge curve one it is straight
The charging interval discreet value for connecing reading is exported to the battery management unit.
Further, it is characterised in that the correction time computation subunit includes：Degree of aging parameter error calculates mould
Block, temperature parameter deviation computing module and starting electricity deviation computing module；
If present battery degree of aging L0The cell degradation degree sampling parameter of off-target charging curve two, based on battery
Influence of the degree of aging to charge rate is presented linear, and the degree of aging parameter error computing module obtains old from present battery
Change degree L0Two nearest cell degradation degree sampling parameter Lm1, Lm2, and from current charging temperature T0And starting electricity S0
Nearest temperature sampling parameter Tm, starting electricity sampling parameter Sm, and based on sampling parameter (Lm1、Tm、Sm) and (Lm2、Tm、Sm) right
Two charging curves answered, obtain the charging interval discreet value t from starting electricity to target electricity respectively1、t2, calculate battery old
The estimated time correction value Δ t for deviateing the introducing of cell degradation degree sampling parameter of change degree, calculation formula is as follows：
Wherein, Lm1For less than L0Cell degradation degree sampling parameter in maximum, Lm2For more than L0Cell degradation
Minimum value in degree sampling parameter；
If originating electricity S0The starting electricity sampling parameter of off-target charging curve two, as starting electricity S0In constant current
It is constant in the charge rate of constant-current charging phase during the charging stage, it is described starting electricity deviation computing module obtain respectively from work as
Preceding starting electricity S0, present battery degree of aging L0And current charging temperature T0Nearest starting electricity sampling parameter Sm, battery it is old
Change degree sampling parameter LmAnd temperature sampling parameter Tm, and based on sampling parameter (Sm、Lm、Tm) corresponding charging curve calculating constant current
The charge rate in stage, is calculated based on starting electricity S0The estimated time correction value Δ t that introduces of deviation, calculation formula is：Δt
=(Sm-S0) * k, wherein, S0For starting electricity, SmFor the starting electricity sampling parameter from starting electricity recently, k is charge rate
Product；As starting electricity S0During in constant voltage charging phase or trickle charge stage, the sampling density of setting is big, the sampling interval
It is small, starting electricity S0With from starting electricity S0Nearest starting electricity sampling parameter SmDifference very little, the starting electricity deviation
Computing module order starting electricity S0Deviation introduce estimated time correction value Δ t be zero；
If current charging temperature T0The temperature sampling parameter T of off-target charging curve two, in temperature sensitivity interval, setting
Sampling density it is big, the sampling interval is small, current charging temperature T0With deviateing current charging temperature T0Nearest temperature sampling parameter Tm
Difference very little, the temperature parameter deviation computing module makes current charging temperature T0Deviation introduce estimated time correction value
Δ t is zero, for the non-sensitive interval of temperature, because influence of the change to charging curve of charging temperature is small, the temperature parameter
Deviation computing module makes current charging temperature T0Deviation introduce estimated time correction value Δ t be zero.
The embodiment of the present invention is estimated unit by the charging interval and currently filled based on the rechargeable battery that battery management unit is sent
The degree of aging of electro-temperature, starting electricity and rechargeable battery is matched from the multigroup charging curve prestored most preferably to be filled
Electric curve, the time that charging curve record is charged to needed for each electricity, user is that would know that to fill by optimal charge curve
Electricity is easy to make rational planning for and uses car to the time of institute's subfam. Spiraeoideae；In addition, the embodiment of the present invention is to consider charging environment to charge rate
Influence, such as cell degradation degree and charging temperature so that user obtain be charged to the remaining charging interval of target electricity more
It is objective, accurate.
Brief description of the drawings
Fig. 1 is the structural representation for showing system in the charging interval provided in an embodiment of the present invention；
Fig. 2 is the structural representation for estimating unit in the charging interval provided in an embodiment of the present invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Fig. 1 is the structural representation for showing system in the charging interval provided in an embodiment of the present invention, for convenience of description, is only shown
Go out the part related to the embodiment of the present invention.
The embodiment of the present invention provides a kind of charging interval display system, and the system includes：Battery management unit 1, the battery
Charging temperature, the degree of aging of the current initiation of charge amount of battery and battery when administrative unit 1 is used to obtain battery charging,
Cell degradation degree is characterized with the number of times of battery cycle charge-discharge, and the system also includes：Charging interval estimates unit 2,
And display unit 3, the charging interval estimates unit 2 and display unit 3 and is connected with battery management unit 1, wherein, the charging interval
Estimate the current charging temperature of rechargeable battery, starting electricity and rechargeable battery that unit 2 is sent based on battery management unit 1
Degree of aging, matches optimal charge curve from the multigroup charging curve prestored, based on optimal charge curve estimate from
Starting time for charging to needed for target electricity of electricity, by target electricity and charging interval of target electricity is charged to cell tube
Manage unit 1, battery management unit 1 is used for target electricity and charges to charging interval of target electricity and send to display unit 3
It has been shown that,
In embodiments of the present invention, multigroup charging curve refer to obtain under experimental conditions based on different aging journeys
Degree, different charging temperatures and difference originate SOC multigroup charging curve, and the acquisition methods of multigroup charging curve are：In phase
Under conditions of same charging temperature and same battery degree of aging, the charging curve under different starting SOC is measured；Change charging
A parameter in temperature and cell degradation degree, keeps another parameter constant, and the charging tested under different starting SOC is bent
Line, until the different charging curves originated under SOC under all combinations of traversal charging temperature and cell degradation degree, based on electricity
Pond degree of aging, charging temperature and starting three experiment parameters of electricity set each reality to the influence degree of charge rate
The sampling density of parameter, i.e. sampling interval are tested, the setting of the sampling density is specific as follows：Cell degradation degree is to charge rate
Influence linear relationship is presented, the cell degradation degree sampling density of setting is smaller, i.e. the cell degradation degree sampling interval is big；Fill
Electro-temperature be in 15 DEG C to 35 DEG C of temperature it is non-sensitive it is interval in when, the influence of the change of charging temperature to charge rate is small, if
Fixed temperature sampling density is small, i.e., temperature sampling interval is big, in temperature sensitivity interval, and charging temperature influences big to charge rate,
The temperature sampling density of setting is big, i.e. temperature sampling interval is small；When originating electricity in constant-current charging phase, charge rate is steady
Fixed, the starting electricity sampling density of setting is small, that is, originates the electricity sampling interval greatly, and constant pressure or trickle charge are in starting electricity
During the stage, charge rate is gradually reduced, and the starting electricity sampling density of setting is big, that is, originates the electricity sampling interval small；
In embodiments of the present invention, target electricity is placed equidistant, and equidistant design can be carried out based on starting electricity, is such as originated
Electricity is 17%, and equidistant incremental by 10%, i.e. the setting numerical value of target electricity is followed successively by：27%th, 37%......, or be based on
Zero point carries out equidistant design, and equidistant incremental by 10%, i.e. the setting numerical value of target electricity is followed successively by：10%th, 20%......, when
When the target electricity is multiple setting values, display unit 3 to target electricity and charges to mesh in the way of form or two-dimentional line chart
The charging interval of mark electricity is shown.
It is current based on the rechargeable battery that battery management unit 1 is sent that the embodiment of the present invention estimates unit 2 by the charging interval
The degree of aging of charging temperature, starting electricity and rechargeable battery is matched most preferably from the multigroup charging curve prestored
Charging curve, the time that charging curve record is charged to needed for each electricity, user is that would know that by optimal charge curve
The time of institute's subfam. Spiraeoideae is charged to, is easy to make rational planning for and uses car；In addition, the embodiment of the present invention is to consider charging environment to charging speed
The influence of rate, such as cell degradation degree, charging temperature and starting electricity (influence of the reaction cell charge characteristic to charge rate),
So that the remaining charging interval for charging to target electricity that user obtains is more objective, accurate.
In embodiments of the present invention, the system include CAN communication unit 4, the CAN communication unit 4 respectively with battery management
Unit 1 and charging pile connection 5, battery management unit 1 is synchronously carried out display information based on CAN communication unit 4 on charging pile 5
It has been shown that, is easy to user more intuitively to obtain information needed.
In embodiments of the present invention, the charging interval estimates unit 2 and included：Parameter coupling subelement 21, and matched with parameter
The optimal charge curve one that subelement 21 is connected obtains subelement 23 and optimal charge curve two obtains subelement 22, with most preferably filling
Electric curve one obtains subelement 23 and optimal charge curve two obtains the estimated time reading subelement 24 that subelement 22 is connected, with
And the estimated time output subelement 26 that subelement 24 is connected is read with the estimated time,
Parameter coupling subelement 21, for by present battery degree of aging, current charging temperature, current starting electricity and electricity
Pond degree of aging sampling parameter, temperature sampling parameter and starting electricity sampling parameter are matched；
If present battery degree of aging, current charging temperature and current starting electricity are complete with corresponding sampling parameter
Full matching, optimal charge curve one obtains subelement 23 then by present battery degree of aging, current charging temperature and current
The corresponding charging curve of beginning electricity is sent to estimated time reading as optimal charge curve one, and by optimal charge curve one
Unit 24；
If present battery degree of aging, current charging temperature and current starting electricity and corresponding sampling parameter are endless
Full matching or when mismatching, optimal charge curve two obtains subelement 22 and obtains that the current charging of deviation is warm, present battery is old respectively
Change degree and three minimum sampling parameters of current starting electricity, the corresponding charging curve of three sampling parameters is
Optimal charge curve two, and optimal charge curve two is sent to estimated time reading subelement 24；
In embodiments of the present invention, sampling parameter includes：Cell degradation degree sampling parameter, temperature sampling parameter and starting
Electricity sampling parameter；For cell degradation degree sampling parameter, if, cell degradation degree. per the sub-sampling of cycle charge-discharge 50 once
The value of sampling parameter is 0 (i.e. new battery), cycle charge-discharge 50, cycle charge-discharge 100；For temperature sampling parameter, its temperature
Sample range control is spent between minimum license charging temperature and highest license charging temperature, if every 5 DEG C of samplings once, temperature
Such as 15 DEG C, 20 DEG C, 25 DEG C of the value of sampling parameter；For starting electricity sampling parameter, if once, to be originated every 10% sampling
The value 0 of electricity sampling parameter, 10%, 20%.......
Estimated time read subelement 24, for based on optimal charge curve one or optimal charge curve two directly read from
SOC to target SOC charging interval discreet value is originated, and direct charging interval discreet value is sent defeated to the estimated time
Go out subelement 26；
Estimated time exports subelement 26, for the estimated time to be read into the charging interval discreet value that subelement 24 is sent
Export to battery management unit 1.
Different cell degradation degree of the embodiment of the present invention based on storage, different charging temperatures and different starting battery conditions
Under charging curve, come obtain with present battery degree of aging, current charging temperature and battery starting electricity match the most most
Good charging curve, is read from the charging interval that electricity is target electricity is originated based on optimal charge curve, considered outer
Influence of boundary's factor to charging process, degree of aging, charging temperature and the initiation of charge amount of such as battery, initiation of charge quantitative response
Be influence that battery charge characteristic was estimated the charging interval so that the remaining charging interval that user obtains is as close as true
Real value.
In embodiments of the present invention, the charging interval estimates unit 2 and included：Correction time computation subunit 25, correction time
Calculating sub module 25 obtains subelement 22 with optimal charge curve two and estimated time output subelement 26 is connected；Wherein,
Correction time computation subunit 25 calculate cell degradation degree, current charging temperature and current starting electricity with it is described
The estimated time correction value that the deviation of the sampling parameter of optimal charge curve two is introduced, and the estimated time correction value is sent to pre-
Estimate time output subelement 26；
Estimated time export subelement 26, for will read the estimated time subelement 24 from optimal charge curve two directly
The estimated time correction value sum that the charging interval discreet value of reading is calculated with correction time computation subunit 25 is exported to battery
Administrative unit 1；The charging interval that either estimated time reading subelement 24 is directly read from optimal charge curve one is pre-
Valuation is exported to battery management unit 1.
Further, the correction time computation subunit 25 includes：Cell degradation extent index deviation computing module 251,
Temperature parameter deviation computing module 252 and starting electricity deviation computing module 253；
If present battery degree of aging L0The cell degradation degree sampling parameter of off-target charging curve two, based on battery
Influence of the degree of aging to charge rate is presented linear, and the degree of aging parameter error computing module 251 is obtained from current electricity
Pond degree of aging L0Two nearest cell degradation degree sampling parameter Lm1, Lm2, and from current charging temperature T0And starting electricity
Measure S0Nearest temperature sampling parameter Tm, starting electricity sampling parameter Sm, and based on sampling parameter (Lm1、Tm、Sm) and (Lm2、Tm、
Sm) corresponding two charging curves, the charging interval discreet value t from starting electricity to target electricity is obtained respectively1、t2, calculate electricity
The estimated time correction value Δ t that the deviation of pond degree of aging is introduced, calculation formula is as follows：
Wherein, Lm1For less than L0Cell degradation degree sampling parameter in maximum, Lm2For more than L0Cell degradation
Minimum value in degree sampling parameter；
If originating electricity S0The starting electricity sampling parameter of off-target charging curve two, as starting electricity S0In constant current
It is constant in the charge rate of constant-current charging phase during the charging stage, the starting electricity deviation computing module 252 obtain respectively from
Current starting electricity S0, present battery degree of aging L0And current charging temperature T0Nearest starting electricity sampling parameter Sm, battery
Degree of aging sampling parameter LmAnd temperature sampling parameter Tm, and based on sampling parameter (Sm、Lm、Tm) corresponding charging curve calculating perseverance
The charge rate in stream stage, is calculated based on starting electricity S0The estimated time correction value Δ t that introduces of deviation, calculation formula is：
Δ t=(Sm-S0) * k, wherein, S0For starting electricity, SmFor the starting electricity sampling parameter from starting electricity recently, k is charging
Rate Product；As starting electricity S0During in constant voltage charging phase or trickle charge stage, the sampling point density of setting is big, sampling
Interval is small, starting electricity S0With from starting electricity S0Nearest starting electricity sampling parameter SmDifference very little, the starting electricity
The order starting electricity of deviation computing module 252 S0Deviation introduce estimated time correction value Δ t be zero；
If current charging temperature T0The temperature sampling parameter T of off-target charging curve two, in temperature sensitivity interval, due to
The sampling density of setting is big, and the sampling interval is small, current charging temperature T0With deviateing current charging temperature T0Nearest temperature sampling ginseng
Number TmDifference very little, the temperature parameter deviation computing module 253 makes current charging temperature T0Deviation introduce estimated time
Correction value Δ t is zero, for the non-sensitive interval of temperature, because influence of the change to charging curve of charging temperature is small, the temperature
Degree parameter error computing module 253 makes current charging temperature T0Deviation introduce estimated time correction value Δ t be zero.
Different cell degradation degree of the embodiment of the present invention based on storage, different charging temperatures and different starting battery conditions
Under charging curve, come obtain with present battery degree of aging, current charging temperature and battery starting electricity match the most most
Good charging curve, if battery present battery degree of aging, current charging temperature and battery starting electricity and optimal charge curve
When sampling parameter has deviation, carried out by correction time computation subunit 25 for the characteristic of different experiments parameter error corresponding
Time complexity curve so that the remaining charging interval that user obtains is further close to actual value.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Any modifications, equivalent substitutions and improvements made within refreshing and principle etc., should be included in the scope of the protection.
Claims (6)
1. a kind of charging interval shows system, the system includes：Battery management unit, the battery management unit is used for real-time
The degree of aging of charging temperature, the current initiation of charge amount of battery and battery during acquisition battery charging, it is characterised in that institute
Stating system also includes：Charging interval estimates unit, and display unit, and the charging interval estimates unit and the display unit is equal
It is connected with the battery management unit；
The charging interval is estimated unit and worked as based on the current charging temperature of rechargeable battery, battery that the battery management unit is sent
The degree of aging of preceding starting electricity and rechargeable battery, matches optimal charge bent from the multigroup charging curve prestored
Line, estimates the time charged to from the starting electricity needed for target electricity based on the optimal charge curve, and by the mesh
Mark electricity and charging interval of target electricity is charged to the battery management unit, the battery management unit is used for target
Electricity and charge to charging interval of target electricity and send to the display unit and shown；
Multigroup charging curve refer to obtain under experimental conditions based on different cell degradation extent index, different charging temperature
Degree sampling and multigroup charging curve of different starting electricity；
The cell degradation degree is characterized with the number of times of battery cycle charge-discharge.
2. the charging interval as claimed in claim 1 shows system, it is characterised in that the system includes：CAN communication unit,
The CAN communication unit is connected with the battery management unit and the charging pile respectively, and the battery management unit is based on institute
CAN communication unit is stated synchronously to be shown display information on the charging pile.
3. the charging interval as claimed in claim 1 shows system, it is characterised in that when the target electricity is multiple values,
The display unit to target electricity and is charged to charging interval of target electricity and shown in the way of form or two-dimentional line chart
Show.
4. the charging interval as claimed in claim 1 shows system, it is characterised in that the charging interval, which estimates unit, to be included：
Parameter coupling subelement, and the optimal charge curve one being connected with the parameter coupling subelement obtain subelement and optimal charge
Curve two obtains subelement, obtains subelement with the optimal charge curve one and the optimal charge curve two obtains subelement
The estimated time of connection reads subelement, and reads the estimated time output subelement that subelement is connected with the estimated time,
The parameter coupling subelement, for by present battery degree of aging, current charging temperature, current starting electricity and battery
Degree of aging sampling parameter, temperature sampling parameter and starting electricity sampling parameter are matched；
If present battery degree of aging, current charging temperature and current starting electricity with complete of corresponding sampling parameter
Match somebody with somebody, the optimal charge curve one obtains subelement then by present battery degree of aging, current charging temperature and current starting
The corresponding charging curve of electricity is sent to the estimated time as optimal charge curve one, and by the optimal charge curve one
Read subelement；
If incomplete of present battery degree of aging, current charging temperature and current starting electricity and corresponding sampling parameter
Match somebody with somebody or mismatch, the optimal charge curve two obtains subelement and obtains the current charging temperature of deviation, present battery aging journey respectively
Degree and three minimum sampling parameters of current starting electricity, the corresponding charging curve of three sampling parameters is optimal
Charging curve two, and the optimal charge curve two is sent to estimated time reading subelement；
The estimated time reads subelement, is directly read based on the optimal charge curve one or the optimal charge curve two
From starting SOC to target SOC charging interval discreet value, and the charging interval discreet value directly read is sent to described
Estimated time exports subelement；
The estimated time exports subelement, and the charging interval for the estimated time to be read to subelement transmission is estimated
Value is exported to the battery management unit.
5. the charging interval as claimed in claim 4 shows system, it is characterised in that the charging interval, which estimates unit, to be included：
Correction time computation subunit, the correction time calculating sub module and the optimal charge curve two obtain subelement be connected and
The estimated time output subelement connection；
The correction time computation subunit, calculate cell degradation degree, current charging temperature and current starting electricity with it is described
The estimated time correction value that the deviation of the sampling parameter of optimal charge curve two is introduced；And by the estimated time correction value send to
The estimated time exports subelement；
The estimated time exports subelement, for be read into subelement from the optimal charge curve two estimated time
The estimated time correction value sum output that the charging interval discreet value directly read and the correction time computation subunit are calculated
Directly read from the optimal charge curve one to the battery management unit, or by estimated time reading subelement
The charging interval discreet value taken is exported to the battery management unit.
6. the charging interval as described in claim 4 or 5 shows system, it is characterised in that the correction time computation subunit
Including：Degree of aging parameter error computing module, temperature parameter deviation computing module and starting electricity deviation computing module；
If present battery degree of aging L0The cell degradation degree sampling parameter of off-target charging curve two, based on cell degradation
Influence of the degree to charge rate is presented linear, and the degree of aging parameter error computing module is obtained from present battery aging journey
Spend L0Two nearest cell degradation degree sampling parameter Lm1, Lm2, and from current charging temperature T0And starting electricity S0Recently
Temperature sampling parameter Tm, starting electricity sampling parameter Sm, and based on sampling parameter (Lm1、Tm、Sm) and (Lm2、Tm、Sm) corresponding
Two charging curves, obtain the charging interval discreet value t from starting electricity to target electricity respectively1、t2, calculate cell degradation journey
The estimated time correction value Δ t for deviateing the introducing of cell degradation degree sampling parameter of degree, calculation formula is as follows：
<mrow>
<mi>&Delta;</mi>
<mi>t</mi>
<mo>=</mo>
<msub>
<mi>t</mi>
<mn>1</mn>
</msub>
<mo>-</mo>
<mfrac>
<mrow>
<msub>
<mi>L</mi>
<mrow>
<mi>m</mi>
<mn>1</mn>
</mrow>
</msub>
<mo>-</mo>
<msub>
<mi>L</mi>
<mn>0</mn>
</msub>
</mrow>
<mrow>
<msub>
<mi>L</mi>
<mrow>
<mi>m</mi>
<mn>2</mn>
</mrow>
</msub>
<mo>-</mo>
<msub>
<mi>L</mi>
<mrow>
<mi>m</mi>
<mn>1</mn>
</mrow>
</msub>
</mrow>
</mfrac>
<mrow>
<mo>(</mo>
<msub>
<mi>t</mi>
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<mo>-</mo>
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</mrow>
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Wherein, Lm1For less than L0Cell degradation degree sampling parameter in maximum, Lm2For more than L0Cell degradation degree
Minimum value in sampling parameter；
If originating electricity S0The starting electricity sampling parameter of off-target charging curve two, as starting electricity S0In constant-current charge
Constant in the charge rate of constant-current charging phase during the stage, the starting electricity deviation computing module is obtained respectively to be risen from current
Beginning electricity S0, present battery degree of aging L0And current charging temperature T0Nearest starting electricity sampling parameter Sm, cell degradation journey
Spend sampling parameter LmAnd temperature sampling parameter Tm, and based on sampling parameter Sm、Lm、TmCorresponding charging curve calculates constant-current phase
Charge rate, is calculated based on starting electricity S0The estimated time correction value Δ t that introduces of deviation, calculation formula is：Δ t=(Sm-
S0) * k, wherein, S0For starting electricity, SmFor the starting electricity sampling parameter from starting electricity recently, k is charge rate product；
As starting electricity S0During in constant voltage charging phase or trickle charge stage, the sampling density of setting is big, and the sampling interval is small, starting
Electricity S0With from starting electricity S0Nearest starting electricity sampling parameter SmDifference very little, the starting electricity deviation calculates mould
Block order starting electricity S0Deviation introduce estimated time correction value Δ t be zero；
If current charging temperature T0The temperature sampling parameter T of off-target charging curve two, in temperature sensitivity interval, setting is adopted
Sample density is big, and the sampling interval is small, current charging temperature T0With deviateing current charging temperature T0Nearest temperature sampling parameter TmDifference
It is worth very little, the temperature parameter deviation computing module makes current charging temperature T0Deviation introduce estimated time correction value Δ t
It is zero, for the non-sensitive interval of temperature, because influence of the change to charging curve of charging temperature is small, the temperature parameter deviation
Computing module makes current charging temperature T0Deviation introduce estimated time correction value Δ t be zero.
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Application publication date: 20171010 |