CN106505693A - Low temperature charge control method - Google Patents
Low temperature charge control method Download PDFInfo
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- CN106505693A CN106505693A CN201611249544.7A CN201611249544A CN106505693A CN 106505693 A CN106505693 A CN 106505693A CN 201611249544 A CN201611249544 A CN 201611249544A CN 106505693 A CN106505693 A CN 106505693A
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- 238000000034 method Methods 0.000 title claims abstract description 36
- 230000005611 electricity Effects 0.000 claims description 10
- 230000002045 lasting effect Effects 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 5
- 230000000052 comparative effect Effects 0.000 claims description 3
- 230000006378 damage Effects 0.000 abstract description 8
- IVUGBSGLHRJSSP-UHFFFAOYSA-N LimKi 3 Chemical compound S1C(NC(=O)C(C)C)=NC=C1C1=CC(C(F)F)=NN1C1=C(Cl)C=CC=C1Cl IVUGBSGLHRJSSP-UHFFFAOYSA-N 0.000 description 7
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- 230000005779 cell damage Effects 0.000 description 3
- 208000037887 cell injury Diseases 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- 230000028161 membrane depolarization Effects 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Classifications
-
- H02J7/0091—
-
- 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]
-
- 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
- H01M10/443—Methods for charging or discharging in response to temperature
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The present invention provides a kind of low temperature charge control method, when charge switch is opened, by detecting battery actual temperature, according to battery actual temperature and default cell temperature range and the corresponding relation of charging current, determine the charging current of battery, battery is charged according to the charging current for determining, and detect battery actual capacity, complete charge is judged whether according to battery actual capacity, when complete charge is determined, it is 0 to arrange charging current.The method provided by the present invention, different charging currents can be adopted according to different temperature ranges at low ambient temperatures, and using the different battery capacity control charging intervals, solve the problems, such as under low temperature environment using single trickle charge time length, damage battery.
Description
Technical field
A kind of the present invention relates to charging electric vehicle technical field, more particularly to low temperature charge control method.
Background technology
In recent years, electric automobile is fast-developing, but also faces a lot of technical barriers simultaneously, and the wherein low temperature of battery charges
It is exactly the considerable hurdle of one of which obstruction industry development.When low temperature charges, lithium ion is made in the embedded difficult generation accumulation of negative pole
Obtain negative electrode lithium ion and produce irreversible precipitation, so as to cause battery to reduce, and lithium ion is separated out and will also result in one
Fixed potential safety hazard.
In prior art, low-temperature charging method mainly has following three kinds：Permanent trickle charge, low-temperature heat charging and pulse
Depolarization is charged.Permanent trickle charge technology is persistently charged using low-down current versus cell, there is charge efficiency
The defect of too low, overlong time, and after battery reaches low temperature charging capacity, still battery can be caused using trickle charge
Damage.
Low-temperature heat charging technique be using extraneous electric energy or battery itself electric energy to the heater inside battery bag
Heated, heater transfers heat to battery, raise the temperature of battery, then again battery is charged.Low temperature adds
Hot charging technique needs to consume extra electric energy to heating devices heat, and heater carries out presence during heat transfer with battery
Heat transfer profile is uneven to cause internal temperature of battery inconsistent so that charge control strategy is complicated, to battery management system
(Battery Management System, abbreviation BMS) and the requirement of charger are higher, increased equipment cost, and battery
Bag inner space is limited, increases heater and occupies certain space, is unfavorable for the integrated lightweight requirements of battery.
Pulse depolarization charging technique is to adopt pulse charge, causes battery-heating, pulse charge during pulse charge
Time is longer, and battery temperature is higher, constantly adjusts pulse current, when the temperature of battery reaches during battery temperature rises
When battery charges normal the threshold value of temperature, unlatching is charged normal.Charge certainly by battery using during pulse depolarization charging technique
Body generates heat to lifting battery temperature, there is the not good defect of battery temperature rise effect, and using pulse technique to battery and charging
Machine has higher requirement, increased equipment cost.
Content of the invention
The present invention provides a kind of low temperature charge control method, to solve in prior art to charge battery at low ambient temperatures
Problem.
The present invention provides a kind of low temperature charge control method, including：
When charge switch is opened, battery actual temperature is detected；
According to battery actual temperature and default cell temperature range and the corresponding relation of charging current, battery is determined
Charging current；
Charging current according to determining is charged to battery；
Detection battery actual capacity, judges whether complete charge according to battery actual capacity；
When complete charge is determined, it is 0 to arrange charging current.
Optionally, the corresponding relation of the default cell temperature range and charging current, including：
Work as T<T4When, I=0；
Work as T4≤T<T3When, I=I4；
Work as T3≤T<T2When, I=I3；
Work as T2≤T<T1When, I=I2；
Work as T1≤T<T0When, I=I1；
As T >=T0When, I=I0；
Wherein, T be battery actual temperature, T0、T1、T2、T3And T4For default battery temperature, T0>T1>T2>T3>T4, I is
Charging current, I0、I1、I2、I3And I4For default charging current.
Optionally, I0、I1、I2、I3And I4Meet condition respectively：The I0″≤I0<I0′、I1″≤I1<I1′、I2″≤I2<
I2′、I3″≤I3<I3' and I4″≤I4<I4′；
Wherein, the I0′、I1′、I2′、I3' and I4', corresponding temperature is T respectively0、T1、T2、T3And T4When upper safety limit
Electric current, the I0″、I1″、I2″、I3" and I4", corresponding temperature is T respectively0、T1、T2、T3And T4When lasting charging current.
Optionally, described complete charge is judged whether according to battery actual capacity, including：
The size of comparative cell actual capacity battery capacity corresponding with each cell temperature range；
For each cell temperature range, when battery actual capacity is more than or equal to the corresponding electricity of the cell temperature range
During tankage, complete charge is determined.
Optionally, described complete charge is judged whether according to battery actual capacity, including：
Ratio calculation charge cutoff parameter according to battery actual capacity and room temperature charging capacity；
Comparison charge cutoff parameter charge cutoff threshold corresponding with the cell temperature range belonging to battery actual temperature
The size of value, wherein, the charge cutoff threshold value is the corresponding battery of cell temperature range according to belonging to battery actual temperature
The ratio calculation of capacity and room temperature charging capacity is obtained；
When the charge cutoff parameter is more than the charge cutoff threshold value, complete charge is determined.
Optionally, the ratio calculation charge cutoff parameter according to battery actual capacity and room temperature charging capacity, including：
Charge cutoff parameter is calculated by equation below：
α=(C/C0)2× 100%；
Wherein, C represents battery actual capacity, C0Represent room temperature battery capacity.
The low temperature charge control method that the present invention is provided, when charge switch is opened, by detecting battery actual temperature, root
According to battery actual temperature and default cell temperature range and the corresponding relation of charging current, the charging current of battery is determined,
Charging current according to determining is charged to battery, and detects battery actual capacity, is judged whether according to battery actual capacity
Complete charge, when complete charge is determined, it is 0 to arrange charging current.The method provided by the present invention, at low ambient temperatures may be used
To adopt different charging currents according to different temperature ranges, and using the different battery capacity control charging intervals, solve
Under low temperature environment using single trickle charge time length, damage the problem of battery.
Description of the drawings
Fig. 1 is the flow chart of the low temperature charge control method that the embodiment of the present invention one is provided；
A kind of structural representations of the Fig. 2 for charging device；
Fig. 3 is a kind of flow chart of the method for judgement complete charge that the embodiment of the present invention two is provided；
Fig. 4 is the flow chart of the method that the another kind that the embodiment of the present invention three is provided judges complete charge.
Specific embodiment
Fig. 1 is the flow chart of the low temperature charge control method that the embodiment of the present invention one is provided, as shown in figure 1, the present embodiment
Method can include：
Step 101, when charge switch is opened, detect battery actual temperature.
In the present embodiment, battery actual temperature, a kind of structures of the Fig. 2 for charging device can be detected by the BMS of battery
Schematic diagram, as shown in Fig. 2 the charging device includes：Charge switch 1, controller 2, BMS3 and set of cells 4.General, set of cells
4 are made up of the battery of the identical material system of polylith.When set of cells 4 needs to charge, charge switch 1 is opened, controller 2 passes through
BMS3 obtains the actual temperature of battery, and controller 2 can be according to the actual temperature of the acquisition battery of default cycle.
Wherein, BMS3 is the important tie for connecting vehicle mounted dynamic battery and electric automobile, and its major function includes：Battery thing
Reason parameter real time monitoring, battery status estimation, inline diagnosis and the control of early warning, discharge and recharge and preliminary filling, balanced management and heat management
Deng.Charge switch 1 is opened, the transient temperature of every piece of battery in the set of cells 4 of BMS3 collection electric automobiles, controller 2 will collection
To polylith battery temperature be compared, using the temperature of minimum temperature battery block as battery actual temperature, to avoid using super
The upper safety limit charging current for crossing minimum temperature battery block charges to which, and minimum temperature battery block is caused to damage.
Step 102, according to battery actual temperature and the corresponding relation of default cell temperature range and charging current, really
Determine the charging current of battery.
The chargeable temperature range of the battery of different materials system is different, material system of the controller 2 according to battery
Temperature range, the scope is divided into multiple temperature ranges, each temperature range is entered to set of cells 4 using different charging currents
Row charges.Optionally, default cell temperature range and the corresponding relation of charging current, can include：
Work as T<T4When, I=0；
Work as T4≤T<T3When, I=I4；
Work as T3≤T<T2When, I=I3；
Work as T2≤T<T1When, I=I2；
Work as T1≤T<T0When, I=I1；
As T >=T0When, I=I0；
Wherein, T be battery actual temperature, T0、T1、T2、T3And T4For default battery temperature, T0>T1>T2>T3>T4, I is
Charging current, I0、I1、I2、I3And I4For default charging current.
In the present embodiment, battery temperature scope is by T0、T1、T2、T3And T4Five default battery temperatures are divided into six temperature
Degree is interval, when battery actual temperature T is less than minimum predetermined battery temperature T4When, now battery temperature is too low, even with very little
Current versus cell charge can also cause cell damage, charging current I of battery is set to 0 therefore.When battery actual temperature T
Battery temperature T default more than or equal to highest0When, T0For charging normal temperature, now charging current I is equal under normal temperature
Charging current I0.When battery actual temperature T meets T4≤T<T0During scope, according to cell temperature range T1≤T<T0、T2≤T<
T1、T3≤T<T2, and T4≤T<T3Corresponding charging current I1、I2、I3And I4Determine present battery charging current I.
Specifically, the cell temperature range first according to belonging to battery actual temperature determines battery actual temperature of controller 2, so
Determine that the corresponding charging current of the cell temperature range belonging to battery actual temperature is currently to fill afterwards further according to above-mentioned corresponding relation
Electric current.
Optionally, I0、I1、I2、I3And I4Meet condition respectively：I0″≤I0<I0′、I1″≤I1<I1′、I2″≤I2<I2′、I3″
≤I3<I3' and I4″≤I4<I4', wherein, I0′、I1′、I2′、I3' and I4', corresponding temperature is T respectively0、T1、T2、T3And T4When
Upper safety limit electric current, I0″、I1″、I2″、I3" and I4", corresponding temperature is T respectively0、T1、T2、T3And T4When lasting charging current.
The battery of identical material system upper safety limit charging current at different temperatures and lasting charging current are not
Together, the battery of different materials system upper safety limit charging current at the same temperature is also different with lasting charging current.
One timing of material system of battery, the upper safety limit electric current of battery and lasting charging current are all determined by the actual temperature of battery.
Battery is charged using the charging current more than upper safety limit electric current and can battery be caused to damage, using less than lasting charging current
Charging current can extend battery charging time, therefore set charging current between upper safety limit electric current and lasting charging current
Between, shorten the charging interval while battery will not be damaged.
It should be noted that the temperature range of battery is divided into 6 cell temperature ranges in above-mentioned example, actually make
With during, can be different according to battery material system, the temperature range of battery is divided into than 6 more or less of temperature
Interval, the present embodiment are not limited to this.
Step 103, according to determine charging current battery is charged.
Controller 2 is charged to set of cells 4 according to charging current I that step 102 determines.
Step 104, detection battery actual capacity, judge whether complete charge according to battery actual capacity.
Continue to be charged set of cells 4 when battery actual capacity is not up to battery capacity, persistently charging to cause electricity
Pond generates heat, so that the temperature of battery itself is raised, battery actual temperature raises and the temperature range belonging to battery is occurred
Change, it is therefore desirable to detect again battery actual temperature.BMS3 detects battery actual capacity, when complete charge pond is determined, control
2 execution step 105 of device processed, when not complete charge is determined, controller 2 returns execution step 101.
When 2 execution step 101 of controller, if BMS3 detects battery actual temperature and there occurs change, according to new electricity
Pond actual temperature redefines charging current, battery is charged using new charging current.Repeat step 101-104, directly
To the battery capacity that battery actual capacity meets complete charge.
Step 105, setting charging current are 0.
After battery actual capacity reaches battery capacity, it is zero that controller 2 arranges charging current, with complete charge.According to
Battery capacity complete charge can avoid battery overcharge from causing cell damage.
The method that the present embodiment is provided, when charge switch is opened, by detecting battery actual temperature, according to battery reality
Temperature and default cell temperature range and the corresponding relation of charging current, determine the charging current of battery, according to determined
Charging current is charged to battery, and detects battery actual capacity, judges whether complete charge according to battery actual capacity, when
When determining complete charge, it is 0 to arrange charging current.The method provided by the present embodiment, at low ambient temperatures can be according to not
Same temperature range adopts different charging currents, and using the different battery capacity control charging intervals, solves low temperature ring
Using single trickle charge time length, the problem of damage battery under border.
On the basis of embodiment one, the embodiment of the present invention two provides a kind of method for judging complete charge, with to implementing
In example one, step 104 is described in detail, and Fig. 3 is a kind of stream of the method for judgement complete charge that the embodiment of the present invention two is provided
Cheng Tu, as shown in figure 3, the method for the present embodiment can include：
Step 1041, detection battery actual capacity.
The size of step 1042, comparative cell actual capacity battery capacity corresponding with each cell temperature range, works as electricity
When pond actual capacity is more than or equal to cell temperature range corresponding battery capacity, complete charge is determined.
Battery capacity refers to the size of battery storage electricity, and one timing of battery material system, different temperature ranges are corresponding
Different battery capacities, battery actual capacity refer to the actual electricity stored in present battery, battery capacity and battery actual capacity
Can be acquired from BMS3 by controller 2.When battery charge temperature is interval constant, battery charge is constant, during charging
Between longer, battery actual capacity is bigger, when battery actual capacity reaches the temperature range corresponding battery capacity, if continuing to electricity
Pond is charged, and battery actual capacity can cause to damage battery more than battery capacity in the range of the temperature range, affects battery
Battery capacity at a normal temperature, therefore sets and is more than or equal to the corresponding battery of cell temperature range when battery actual capacity
During capacity, it is zero that controller 2 arranges charging current, and with complete charge, battery actual capacity now reaches current battery temperature
Corresponding battery capacity.In the present embodiment, temperature T is in T<T4、T4≤T<T3、T3≤T<T2、T2≤T<T1、T1≤T<T0With T >=T0
During interval range, corresponding battery capacity is respectively 0, C4、C3、C2、C1And C0, battery actual capacity is C.With T3≤T<T2For
Example, when, in battery charging process, battery actual temperature is all the time in temperature range T3≤T<T2When, it is I that battery charge I is permanent3,
Charging interval is longer, and actual capacity C is bigger for battery, as C >=C3When, in order to avoid damage battery, 2 complete charge of controller, i.e.,
Charging current I is set to zero.
On the basis of embodiment one, the embodiment of the present invention three provides the method that another kind judges complete charge, with to reality
Apply step 104 in example one to be described in detail, Fig. 4 is the method that the another kind that the embodiment of the present invention three is provided judges complete charge
Flow chart, as shown in figure 4, the method for the present embodiment can include：
Step 1041, detection battery actual capacity.
Step 1043, the ratio calculation charge cutoff parameter according to battery actual capacity and room temperature charging capacity.
Specifically, charge cutoff parameter alpha=(C/C0)2× 100%, wherein, C represents battery actual capacity, C0Represent room temperature
Battery capacity.
Step 1044, compare charge cutoff parameter corresponding with the cell temperature range belonging to battery actual temperature charge cut
Only the size of threshold value, when the charge cutoff parameter is more than the charge cutoff threshold value, determines complete charge.
Wherein, charge cutoff threshold value be the corresponding battery capacity of cell temperature range according to belonging to battery actual temperature and
The ratio calculation of room temperature charging capacity is obtained.Specifically, battery actual temperature T is in T<T4、T4≤T<T3、T3≤T<T2、T2≤T
<T1、T1≤T<T0With T >=T0During interval range, corresponding battery capacity is respectively 0, C4、C3、C2、C1And C0, battery actual capacity
For C.With T3≤T<T2As a example by, T3≤T<T2The corresponding battery capacity of temperature range is C3, the charge cutoff threshold value of this temperature range
α3=(C3/C0)2× 100%.Compare charge cutoff parameter alpha and charge cutoff threshold alpha3Size, as α >=α3When, controller 2 is tied
Beam charges.In the same manner, the corresponding charge cutoff threshold value of other temperature ranges can be obtained, compares charge cutoff ginseng in the temperature range
Number α and charge cutoff threshold value, when charge cutoff parameter alpha is more than charge cutoff threshold value, 2 complete charge of controller.
The corresponding two kinds of methods for judging complete charge of Fig. 3 and Fig. 4, its effect are provided to avoid in battery actual temperature
Cell damage is caused to battery overcharge in affiliated cell temperature range.
Finally it should be noted that：Various embodiments above only in order to technical scheme to be described, rather than a limitation；To the greatest extent
Pipe has been described in detail to the present invention with reference to foregoing embodiments, it will be understood by those within the art that：Its according to
So the technical scheme described in foregoing embodiments can be modified, or which part or all technical characteristic are entered
Row equivalent；And these modifications or replacement, do not make the essence of appropriate technical solution depart from various embodiments of the present invention technology
The scope of scheme.
Claims (6)
1. a kind of low temperature charge control method, it is characterised in that include：
When charge switch is opened, battery actual temperature is detected；
According to battery actual temperature and default cell temperature range and the corresponding relation of charging current, the charging of battery is determined
Electric current；
Charging current according to determining is charged to battery；
Detection battery actual capacity, judges whether complete charge according to battery actual capacity；
When complete charge is determined, it is 0 to arrange charging current.
2. method according to claim 1, it is characterised in that the default cell temperature range is right with charging current
Should be related to, including：
Work as T<T4When, I=0；
Work as T4≤T<T3When, I=I4；
Work as T3≤T<T2When, I=I3；
Work as T2≤T<T1When, I=I2；
Work as T1≤T<T0When, I=I1；
As T >=T0When, I=I0；
Wherein, T be battery actual temperature, T0、T1、T2、T3And T4For default battery temperature, T0>T1>T2>T3>T4, I is the electricity that charges
Stream, I0、I1、I2、I3And I4For default charging current.
3. method according to claim 2, it is characterised in that the I0、I1、I2、I3And I4Meet condition respectively：I0″≤I0
<I0′、I1″≤I1<I1′、I2″≤I2<I2′、I3″≤I3<I3' and I4″≤I4<I4′；
Wherein, the I0′、I1′、I2′、I3' and I4', corresponding temperature is T respectively0、T1、T2、T3And T4When upper safety limit electric current,
The I0″、I1″、I2″、I3" and I4", corresponding temperature is T respectively0、T1、T2、T3And T4When lasting charging current.
4. method according to claim 1, it is characterised in that described judge whether that end is filled according to battery actual capacity
Electricity, including：
The size of comparative cell actual capacity battery capacity corresponding with each cell temperature range；
For each cell temperature range, when battery actual capacity holds more than or equal to the corresponding battery of the cell temperature range
During amount, complete charge is determined.
5. method according to claim 1, it is characterised in that described judge whether that end is filled according to battery actual capacity
Electricity, including：
Ratio calculation charge cutoff parameter according to battery actual capacity and room temperature charging capacity；
Comparison charge cutoff parameter charge cutoff threshold value corresponding with the cell temperature range belonging to battery actual temperature
Size, wherein, the charge cutoff threshold value is the corresponding battery capacity of cell temperature range according to belonging to battery actual temperature
Obtain with the ratio calculation of room temperature charging capacity；
When the charge cutoff parameter is more than the charge cutoff threshold value, complete charge is determined.
6. method according to claim 5, it is characterised in that described according to battery actual capacity and room temperature charging capacity
Ratio calculation charge cutoff parameter, including：
Charge cutoff parameter is calculated by equation below：
α=(C/C0)2× 100%；
Wherein, C represents battery actual capacity, C0Represent room temperature battery capacity.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108688504A (en) * | 2018-06-26 | 2018-10-23 | 北京新能源汽车股份有限公司 | A kind of battery charging control method, device, automobile and computing device |
| CN108847506A (en) * | 2018-06-20 | 2018-11-20 | 安徽江淮汽车集团股份有限公司 | A kind of charging management method and system of power battery |
| CN110034347A (en) * | 2018-01-12 | 2019-07-19 | Fdk株式会社 | The charge control method of alkaline storage battery and alkaline storage battery used charger |
| CN110492190A (en) * | 2019-09-06 | 2019-11-22 | 深圳市驰普科达科技有限公司 | Battery management method, system and computer readable storage medium |
| CN110673667A (en) * | 2018-07-03 | 2020-01-10 | 郑州宇通客车股份有限公司 | Intelligent temperature control method and device for vehicle charging connecting device |
| CN110758127A (en) * | 2018-07-26 | 2020-02-07 | 比亚迪股份有限公司 | Method and device for charging battery, storage medium and electronic equipment |
| CN112537219A (en) * | 2019-09-20 | 2021-03-23 | 比亚迪股份有限公司 | Low-temperature charging control method for power battery, vehicle and medium |
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