CN107742755A - Electric automobile SOH modification methods and device - Google Patents
Electric automobile SOH modification methods and device Download PDFInfo
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- CN107742755A CN107742755A CN201710894028.8A CN201710894028A CN107742755A CN 107742755 A CN107742755 A CN 107742755A CN 201710894028 A CN201710894028 A CN 201710894028A CN 107742755 A CN107742755 A CN 107742755A
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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
- H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
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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
- H01M10/4285—Testing apparatus
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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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- Chemical & Material Sciences (AREA)
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
The invention discloses a kind of electric automobile SOH modification methods and device, wherein modification method comprises the following steps：Confirm that battery pack enters charge mode；Detection SOC calculated values in real time；Determine whether trickle charge state；Operation is corrected to SOC calculated values；Judge whether to exit charge mode；Judge whether battery pack reaches fully charged state；Retrieve this record of charging；According to this record of charging, judge whether to occur in this charging process the saltus step of SOC calculated values as 100%；SOC calculated values during saltus step are recorded as SOC hop values；Obtain SOH assessed values；SOH correction values are calculated by dichotomy again；According to SOH correction values, current SOH value is updated, finally exits amendment.The present invention realizes corrects SOH levels automatically in daily charging process, thus present invention operation is flexible, practicality height, and is able to ensure that driver more precisely grasps the health status of battery pack.
Description
Technical field
The present invention relates to electric automobile field, more particularly to a kind of electric automobile SOH modification methods and device.
Background technology
Capacity with the power battery pack of electric automobile is constantly decayed, and the health status of battery pack is (anti-by SOH value
Reflect) also constantly decaying.Thus need to estimate SOH value, to evaluate the remaining capacity of battery pack and effective rate of utilization
Relation.
Typically by battery management system according to cell-state reference value pair such as monomer voltage, monomer internal resistance
SOH is assessed, but because consistency of battery pack is poor so that reference value has compared with big limitation and mistake used by assessment
Difference, and then there is deviation in the degree of accuracy for the SOH assessed values that can cause to obtain；And currently for battery pack state-of-charge (SOC)
Main flow algorithm is integrated using ampere-hour：SOC calculated values=SOCStarting-(∫A.h/(CDispatch from the factory full capacitance× SOH currencys)), wherein SOH works as
Preceding value refers to current SOH value, that is to say the SOH assessed values obtained by aforementioned evaluations mode, so inaccurate SOH is assessed
Value will also result in SOC and error occurs, for example, SOH assessed values it is actual SOH value it is bigger than normal, then the actual SOC value of battery pack will
The SOC show values (SOC show values i.e. SOC calculated values) seen less than driver, this will be caused to mislead to driver, or even can
Electric automobile during traveling halfway can be made to be forced to stop because of actual not enough power supply.
The content of the invention
It is an object of the invention to provide a kind of electric automobile SOH modification methods and device, for ought after charging complete
Preceding SOH value is modified to more accurate numerical value, to solve foregoing problems.
The technical solution adopted by the present invention is as follows：
A kind of electric automobile SOH modification methods, including：
Step S1, confirm that battery pack enters charge mode；
Step S2, SOC calculated values are detected in real time；
Step S3, trickle charge state is determined whether；If it is not, step S100 is then performed, if so, then performing step S4；
Step S4, operation is corrected to SOC calculated values；
Step S5, judge whether to exit charge mode；If it is not, step S5 is then continuously carried out, if so, then performing step S6；
Step S6, judge whether battery pack reaches fully charged state；If it is not, step S100 is then performed, if so, then performing step
S7；
Step S7, this record of charging is retrieved；
Step S8, according to this record of charging, judge that SOC calculated value saltus steps whether occur in this charging process is
100%；If it is not, step S100 is then performed, if so, then performing step S9；
Step S9, SOC calculated values during saltus step are recorded as SOC hop values；
Step S10, SOH assessed values are obtained；
Step S11, SOH correction values are obtained according to SOH assessed values, SOC hop values；
Step S12, according to SOH correction values, current SOH value is updated, performs step S100；
Step S100, amendment is exited.
Preferably, in addition to：
After step S9, judge whether SOC hop values are more than or equal to default first threshold and are less than or equal to Second Threshold；
Moved back if it is not, then performing step S100, if so, then performing step S10.
Preferably, it is described operation is corrected to SOC calculated values to include：
SOC calculated values are corrected according to the monomer voltage demarcated in advance-temperature relation table.
Preferably, it is described to determine whether that trickle charge state includes：
Detect charging current and charging voltage；
Charge power is calculated according to charging current and charging voltage；
When charge power is less than or equal to default power threshold, then judge that current charge mode is in trickle charge state.
Preferably, it is described to judge whether battery pack reaches fully charged state and include：
After charge mode is exited, if detecting, SOC calculated values are 100%, judge that battery pack is currently at and completely fill shape
State.
A kind of electric automobile SOH correcting devices, including：
Battery management system, and be connected respectively with the battery management system charged state detection unit, electric current prison
Survey unit, voltage monitoring unit, temperature monitoring unit and memory cell；
The charged state detection unit is used to detect whether battery pack enters or exit charge mode；
The current monitoring unit is used to monitor charging current；
The voltage monitoring unit is used to monitor charging voltage and battery cell voltage；
The temperature monitoring unit is used to monitor battery pack temperature；
The memory cell is used to store this record of charging；
The battery management system detects SOC calculated values, and fill according to described in real time after battery pack enters charge mode
Electric current and charging voltage calculate charge power；
After the battery management system determines that battery pack is in trickle charge state according to the charge power, according to the battery
Monomer voltage and battery pack temperature correction SOC calculated values；
The battery management system is additionally operable to exit charge mode in battery pack and determines that battery pack arrives according to SOC calculated values
Up to after fully charged state, this described record of charging is read；
The battery management system reaches the state before 100% according to SOC calculated values in this record of charging, determines SOC
Hop value；
The battery management system calculates SOH amendments after SOH assessed values are obtained, according to SOH assessed values and SOC hop values
Value, and update current SOH value.
The thinking of the present invention is by obtaining more accurately SOC value, and monitors expiring for SOC value and fills hopping phenomenon, and root
According to calculation proposed by the present invention, to realize, amendment SOH is horizontal automatically in daily charging process, thus present invention operation spirit
Living, practicality is high, and after correcting SOH value deviation by the present invention, it can be ensured that driver more precisely grasps battery pack
Health status, avoid causing electric automobile to cast anchor situation during traveling.
Brief description of the drawings
To make the object, technical solutions and advantages of the present invention clearer, the present invention is made into one below in conjunction with accompanying drawing
Step description, wherein：
Fig. 1 is the flow chart of electric automobile SOH modification methods provided in an embodiment of the present invention.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, is only used for explaining the present invention, and is not construed as limiting the claims.
The invention provides the SOH under a kind of actual SOH value of SOH assessed values operating mode bigger than normal for being used for solution and being mentioned above
Modification method, modification method embodiment flow chart as shown in Figure 1, the embodiment comprise the following steps：
Step S1, confirm that battery pack enters charge mode.
First, the present embodiment is realized automatically in charging operations, thus without human intervention, embodies the present invention's
Flexible convenience；Furthermore on the method for confirming battery pack and entering charge mode, foot is had been provided in routine techniques
Enough schemes, such as detection charge flag position, detection charge switch or relay status, detection charging current or detection electricity
Power-up state of pond group etc., the present invention are not limited this.
Step S2, SOC calculated values are detected in real time.
After charge mode is entered, SOC calculated value is got, that is to say the change for grasping SOC in charging process in real time,
The SOC calculated values can be calculated by current integration method and obtained, certainly, it will be appreciated to those of skill in the art that charging
During, estimation is integrated by ampere-hour and influenceed by factors such as environment temperatures, it is likely that causes SOC calculated values and reality
Battery pack can have certain deviation with carrying capacity (actual SOC)；Additionally it may be noted that SOC calculated values namely being shown in instrument
SOC show values on the devices such as table.
Step S3, trickle charge state is determined whether；If it is not, then perform step S100, exit amendment, if so, then performing step
Rapid S4.
The purpose for judging trickle charge is to ensure that the error for reducing SOC calculated values as far as possible, because fast charge state can cause ampere-hour to be accumulated
The error divided is excessive, SOH modification methods proposed by the present invention is not applied to, so then exiting amendment；In the implementation of the present invention
In example, preferably by detecting charging current and charging voltage, charge power is calculated, whether trickle charge state is in for judging,
Specifically, it can be when charge power is less than or equal to a default power threshold, such as 6.6Kw, then may determine that to be current
Charge mode is in trickle charge state；Certainly, the decision procedure of trickle charge is also various, such as passes through slow, fast charge electrical relay
Condition adjudgement etc..
Step S4, operation is corrected to SOC calculated values.
One condition of SOH amendment schemes proposed by the present invention is that SOC calculated values have higher accuracy, thus is proposed
SOC is corrected, specifically, can be according to the monomer voltage demarcated in advance-temperature relation table, in charging process at SOC
When low region, it is, for example, less than equal to 30%, SOC calculated values is corrected, wherein monomer voltage-temperature relation table can be with
It is the corresponding pass based on the minimum voltage under some environment temperature, minimum temperature and SOC obtained by the bench test of routine
It is table；But requiring emphasis and further illustrate, one of condition of the invention is to obtain more accurate SOC calculated values, because
And the operation being corrected to SOC can also include judging whether SOC has been corrected before charging in advance, such as
The lower OCV corrections of static state, the now used OCV-SOC relation corresponding tables that can be provided with battery manufacturer；It is if right before charging
SOC is corrected, then this step can be the verification operation for correction, certainly, can also in order to further improve SOC precision
On the premise of early stage had corrected that, corrected again once in a manner described in low region；If the SOC at the initial stage of charging is in
Upper region (is greater than 50%), then this step meaning correct operation be then to SOC correction checking, that is, check whether into
OCV early stage that gone is corrected, if so, next step can be then continued executing with, if it is not, can then exit amendment；In addition, according to reality
Use habit statistics, two kinds of situations would generally occur in high-end charged, one kind is directly to be full of from high-end, another
Kind is then first to carry out electric discharge completely to battery pack to recharge, and for the latter, the present invention considers at 2 points：First, for repeatedly putting
The situation of electricity, ampere-hour integration accumulated error can be caused excessive, do not apply to the present invention；Second, being recharged after electric discharge, low side can be passed through
Region, now then can be with as it was noted above, be verified and taken amendment to operate SOC corrections.Sum it up, the present invention will
SOC is asked at least to correct once, the opportunity of correction and mode can be adjusted according to actual conditions with so that subsequent step is able to
Realize, for the SOC calculated values not being corrected, due to not applying to SOH modification methods proposed by the present invention, then exit and repair
Just.
It is also pointed out that even if carry out foregoing school present invention employs trickle charge and to SOC calculated values in charging process
Positive operation, but objectively, can still there is certain less deviation between SOC calculated values and actual SOC.
Step S5, judge whether to exit charge mode；If it is not, step S5 is then continuously carried out, if so, then performing step S6.
Charge mode is exited in judgement described here, with it is foregoing confirm into charge mode mode can be it is consistent,
The other modes in routine techniques can be used to confirm to exit, this present invention is not limited.
Step S6, judge whether battery pack reaches fully charged state；If it is not, step S100 is then performed, if so, then performing step
S7。
Another condition of SOH modification methods proposed by the present invention is to reach fully charged state, i.e., battery pack actual capacity has been
Through being charged to maximum, because electricity still underfill when being possible to exit charge mode in abovementioned steps, the present invention carry
Need to confirm fully charged state after going out to exit charging, specifically, the SOC detected can be passed through after charge mode is exited
Calculated value judges, because SOC show values are 100% when completely filling, then SOC calculated values corresponding with SOC show values are now
Also 100% is should be, thus may determine that battery pack is currently at fully charged state；In other embodiments of the invention can be with
Output end voltage or battery pack fullcharging state by detecting battery pack etc. are completely filled judgement；If exit battery pack after charging
In non-full power state, then SOH modification methods proposed by the present invention are not applied to, exit amendment.
Step S7, this record of charging is retrieved, step S8 is then performed, according to this record of charging, judges to fill at this
Whether SOC calculated value saltus step is occurred in electric process as 100%；If it is not, step S100 is then performed, if so, then performing step S9, inciting somebody to action
SOC calculated values during saltus step are recorded as SOC hop values.
Another condition of SOH modification methods proposed by the present invention is that saltus step occurs for SOC calculated values, particularly from some
It is worth direct saltus step to 100%, needs exist for explanation, the reason for saltus step occurs is current SOH value (i.e. SOH assessed values)
More than actual SOH value, with reference to These steps, it is explained as follows：Pass through correction when trickle charge and charging, SOC in abovementioned steps
The degree of accuracy of calculated value has been closer to actual soc-value, then the SOC calculated values (SOC show values) when being charged to full electric should
Closer to actual SOH value, for example, assuming that SOH assessed value=98%, but actual SOH may be for 95% (due to not carrying out also
Amendment, the numerical value for assume it is a kind of be less than 98% situation, in order to illustrate), then be when being charged to SOC calculated values
When 95%, substantially battery pack is full of, now charging current has tended to very little, and SOC calculated values can not be again by ampere-hour
The calculating of integration continues to rise in proper order, so a phenomenon can occur after foregoing each condition is met, i.e., SOC show values from
95% direct saltus step is charged to full power state to 100% with prompting, and this is also the reason for performing abovementioned steps S6；On the other hand, it is existing
Some battery management systems can be taken each variable in charging process and monitor and record, so the saltus step process also can be by
It is stored in this record of charging, thus the history that the present invention proposes that the saltus step occurs in this record of charging of retrieval with lookup is believed
Breath, if not finding the record of the saltus step in this record of charging, then it is assumed that SOH assessed values are relatively accurate, at least compare
Actual SOH value is not bigger than normal, then then exits amendment；If finding the record of the saltus step in this record of charging, then will occur
SOC calculated values during saltus step are designated as " SOC hop values ", for subsequent correction SOH assessed values, in the case of in previous example,
SOC hop values are 95%.
Then, perform step S10, obtain SOH assessed values, and perform step S11, according to SOH assessed values, SOC hop values
Obtain SOH correction values；
The mode for obtaining SOH assessed values belongs to routine techniques, such as utilizes battery cell according to what is introduced in background technology
Multiple measured values be calculated, or it (is by above-mentioned before not corrected due to SOH currencys to be read from current SOH value
The SOH assessed values that assessment mode obtains), this is not limited by the present invention；After SOH assessed values are obtained, the present invention proposes root
SOH correction values are calculated according to SOH assessed values and SOC hop values, it can be seen from foregoing teachings, SOC hop values can consider
In actual SOH value, so SOC hop values can be worked as the revised numerical value of SOH, disposably amendment for theoretically
Preceding SOH value, or by SOC hop values and SOH assessed values to be modified by first sum again it is average in a manner of obtain SOH amendments
Value, still, such computational methods more or less can all introduce relatively large error, and design original intention of the invention is to make amendment
SOH value afterwards is more accurate, with reference to what is be mentioned above：Even if by trickle charge and correct operation, the still actual SOC of SOC calculated values
Deviation be present, thus the present invention proposes the dichotomy a being more highly preferred to calculation：SOH correction values=(SOH assessed values+
SOH assessed values × SOC hop values)/2；It is meant that based on current SOH assessed values to be modified, with reference to SOC hop values,
Carry out halving amendment, be a kind of multiple average comprehensive modification, it is therefore an objective to reduce error as far as possible, can be specifically to current
SOH assessed values take half, and using SOC hop values (being the target that the present embodiment it is expected SOH downward revisions) as current SOH
The reference coefficient of assessed value, first make the two multiplication, carry out taking half afterwards again, the result that both of the aforesaid finally is taken into half is summed, just
More accurately SOH correction values can be obtained；With numerical example above, SOH correction values=(SOH assessed value+SOH assessed values ×
SOC hop values)/2=(98%+98%*95%)/2=95.5%, it that is to say and SOH assessed values have modified 2.5%.
It need to be noted that the widespread consensus for allowing for the amendment in the current international, country for SOH, it is generally recognized that
Error within amendment 5% is suitable, and SOH and SOC value precision is 1%, in conjunction with foregoing proposed by the present invention
Dichotomy correcting mode, thus in another embodiment of the present invention, SOC saltus steps can also be determined whether after step S9
Whether value is more than or equal to default first threshold and is less than or equal to Second Threshold, such as when 90%≤SOC hop value≤98% item
Continue executing with step S10；Otherwise amendment is exited；If because SOC hop values ＞ 98%, current SOH value can consider close
Full Charge Capacity, it assessed value error very little then now and tends to be accurate also without obvious decay, then without proposed by the present invention
Modification method；If SOC hop values ＜ 90%, the revised SOH value ＜ 95% of dichotomy proposed by the present invention, that is to say once
Property amendment is excessive, have modified the numerical value for being more than or being bordering on critical value (5%).
But be not excluded for as electric vehicle engineering improves, current SOH amendments excessive the problem of causing can be overcome, or
Finer value mode is realized, thus is pointed out that above preferred embodiment is directed to current technology cognition
And ability, after technological progress, the span of SOC hop values can be adjusted under the inspiration of the present invention.
Continue above, step S12 is performed after SOH amendments are calculated, according to SOH correction values, update current SOH value, hold
Row step S100.It that is to say and revised SOH value is replaced into uncorrected SOH assessed values so that current SOH value renewal is defined
After true SOH value, amendment is exited.
In addition, present invention also offers a kind of electric automobile SOH correcting devices, for realizing above-mentioned modification method, the dress
Put including：Battery management system BMS, and be connected respectively with the battery management system charged state detection unit, electric current
Monitoring unit, voltage monitoring unit, temperature monitoring unit and memory cell.
Specifically, the charged state detection unit can use the charge switch or charge relay hereinbefore referred to
Deng, its act on be detection battery pack whether enter or exit charge mode；The current monitoring unit is used to monitor charging current,
The voltage monitoring unit is used to monitor charging voltage and battery cell voltage, and this two monitoring unit can be electric current, voltage
Collector；The temperature monitoring unit can use the temperature-sensing element set on the battery pack, and it is monitoring battery that it, which is acted on,
Group temperature；The memory cell is used to store this record of charging, and further, the memory cell can be integrated in foregoing battery
Among management system.
With reference to the explanation of modification method above, the working method of the present apparatus can be as follows：
Battery management system detects SOC calculated values (or according to charging current meter in real time after battery pack enters charge mode
Calculate SOC calculated values), and charge power is calculated according to charging current and charging voltage；Then, battery management system fills according to
After electrical power determines that battery pack is in trickle charge state, demarcated further according to the battery cell voltage and battery pack temperature by inquiring about
Corresponding table correction SOC calculated values；
In addition, battery management system is additionally operable to exit charge mode in battery pack and determines battery pack according to SOC calculated values
After reaching fully charged state, this record of charging is read；Also, battery management system is according to SOC calculated values in this record of charging
The state before 100% is reached, such as hopping phenomenon occurs, then can determine SOC hop values；Battery management system is obtaining SOH
After assessed value, SOH correction values can then be calculated according to SOH assessed values and SOC hop values, and update currently with SOH correction values
SOH value.
It is described in detail construction, feature and the action effect of the present invention according to the embodiment shown in schema above, but more than
For the only presently preferred embodiments of the present invention, it is necessary to explain, the technology involved by above-described embodiment and its preferred embodiment is special
Sign, those skilled in the art can be on the premise of not departing from, not changing mentality of designing and the technique effect of the present invention, rationally
Ground combination collocation is into a variety of equivalents；Therefore, the present invention is every according to the present invention's not to limit practical range shown in drawing
The made change of conception, or the equivalent embodiment of equivalent variations is revised as, still without departing from specification with illustrating covered spirit
When, all should be within the scope of the present invention.
Claims (6)
- A kind of 1. electric automobile SOH modification methods, it is characterised in that including：Step S1, confirm that battery pack enters charge mode；Step S2, SOC calculated values are detected in real time；Step S3, trickle charge state is determined whether；If it is not, step S100 is then performed, if so, then performing step S4；Step S4, operation is corrected to SOC calculated values；Step S5, judge whether to exit charge mode；If it is not, step S5 is then continuously carried out, if so, then performing step S6；Step S6, judge whether battery pack reaches fully charged state；If it is not, step S100 is then performed, if so, then performing step S7；Step S7, this record of charging is retrieved；Step S8, according to this record of charging, judge whether to occur in this charging process the saltus step of SOC calculated values as 100%； If it is not, step S100 is then performed, if so, then performing step S9；Step S9, SOC calculated values during saltus step are recorded as SOC hop values；Step S10, SOH assessed values are obtained；Step S11, SOH correction values are obtained according to SOH assessed values, SOC hop values；Step S12, according to SOH correction values, current SOH value is updated, performs step S100；Step S100, amendment is exited.
- 2. modification method according to claim 1, it is characterised in that also include：After step S9, judge whether SOC hop values are more than or equal to default first threshold and are less than or equal to Second Threshold；If It is no, then perform step S100 and move back, if so, then performing step S10.
- 3. modification method according to claim 2, it is characterised in that described operation is corrected to SOC calculated values to include：SOC calculated values are corrected according to the monomer voltage demarcated in advance-temperature relation table.
- 4. modification method according to claim 1, it is characterised in that described to determine whether that trickle charge state includes：Detect charging current and charging voltage；Charge power is calculated according to charging current and charging voltage；When charge power is less than or equal to default power threshold, then judge that current charge mode is in trickle charge state.
- 5. modification method according to claim 1, it is characterised in that described to judge whether battery pack reaches fully charged state bag Include：After charge mode is exited, if detecting, SOC calculated values are 100%, judge that battery pack is currently at fully charged state.
- A kind of 6. electric automobile SOH correcting devices, it is characterised in that including：Battery management system, and be connected respectively with the battery management system charged state detection unit, current monitoring list Member, voltage monitoring unit, temperature monitoring unit and memory cell；The charged state detection unit is used to detect whether battery pack enters or exit charge mode；The current monitoring unit is used to monitor charging current；The voltage monitoring unit is used to monitor charging voltage and battery cell voltage；The temperature monitoring unit is used to monitor battery pack temperature；The memory cell is used to store this record of charging；The battery management system detects SOC calculated values in real time after battery pack enters charge mode, and according to the charging electricity Stream and charging voltage calculate charge power；After the battery management system determines that battery pack is in trickle charge state according to the charge power, according to the battery cell Voltage and battery pack temperature correction SOC calculated values；The battery management system is additionally operable to exit charge mode in battery pack and determines that battery pack reaches completely according to SOC calculated values After filling state, this described record of charging is read；The battery management system reaches the state before 100% according to SOC calculated values in this record of charging, determines SOC saltus steps Value；The battery management system calculates SOH correction values after SOH assessed values are obtained, according to SOH assessed values and SOC hop values, And update current SOH value.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108828461A (en) * | 2018-09-25 | 2018-11-16 | 安徽江淮汽车集团股份有限公司 | Power battery SOH value evaluation method and system |
| CN109709490A (en) * | 2018-12-29 | 2019-05-03 | 重庆小康工业集团股份有限公司 | The modification method of lithium battery system Life cycle SOC |
| CN110488195A (en) * | 2019-07-18 | 2019-11-22 | 安徽力高新能源技术有限公司 | A method of amendment power battery SOC |
| CN110879364A (en) * | 2018-08-27 | 2020-03-13 | 比亚迪股份有限公司 | Method and device for correcting SOC (state of charge) display of battery and electronic equipment |
| CN111641001A (en) * | 2020-06-05 | 2020-09-08 | 安徽江淮汽车集团股份有限公司 | Correction method, device, storage medium and device of battery system |
| WO2020216082A1 (en) * | 2019-04-25 | 2020-10-29 | 宁德时代新能源科技股份有限公司 | Method and apparatus for correcting state of health of battery, and management system and storage medium |
| CN112415399A (en) * | 2020-10-16 | 2021-02-26 | 欣旺达电子股份有限公司 | Battery single OCV-SOC curve correction method and device and storage medium |
| CN114084045A (en) * | 2021-11-10 | 2022-02-25 | 轻橙时代(深圳)科技有限责任公司 | Power battery life cycle management method |
| US11668755B2 (en) | 2019-04-25 | 2023-06-06 | Contemporary Amperex Technology Co., Limited | Method and apparatus for determining available energy of battery, management system, and storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103267950A (en) * | 2012-12-14 | 2013-08-28 | 惠州市亿能电子有限公司 | SOH (State Of Health) value evaluation method of electric car battery pack |
| CN106340689A (en) * | 2016-11-21 | 2017-01-18 | 上海航天电源技术有限责任公司 | Battery pack system capacity self-learning method |
| CN106814318A (en) * | 2015-11-30 | 2017-06-09 | 上海汽车集团股份有限公司 | The method for determining the life-span of lithium ion battery and determining estimated life modifying factor |
| CN107015155A (en) * | 2017-03-24 | 2017-08-04 | 江门市地尔汉宇电器股份有限公司 | A kind of battery of electric vehicle SOH measuring method and device |
-
2017
- 2017-09-27 CN CN201710894028.8A patent/CN107742755B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103267950A (en) * | 2012-12-14 | 2013-08-28 | 惠州市亿能电子有限公司 | SOH (State Of Health) value evaluation method of electric car battery pack |
| CN106814318A (en) * | 2015-11-30 | 2017-06-09 | 上海汽车集团股份有限公司 | The method for determining the life-span of lithium ion battery and determining estimated life modifying factor |
| CN106340689A (en) * | 2016-11-21 | 2017-01-18 | 上海航天电源技术有限责任公司 | Battery pack system capacity self-learning method |
| CN107015155A (en) * | 2017-03-24 | 2017-08-04 | 江门市地尔汉宇电器股份有限公司 | A kind of battery of electric vehicle SOH measuring method and device |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110879364B (en) * | 2018-08-27 | 2022-03-18 | 比亚迪股份有限公司 | Method and device for correcting SOC (state of charge) display of battery and electronic equipment |
| CN110879364A (en) * | 2018-08-27 | 2020-03-13 | 比亚迪股份有限公司 | Method and device for correcting SOC (state of charge) display of battery and electronic equipment |
| CN108828461A (en) * | 2018-09-25 | 2018-11-16 | 安徽江淮汽车集团股份有限公司 | Power battery SOH value evaluation method and system |
| CN108828461B (en) * | 2018-09-25 | 2020-11-17 | 安徽江淮汽车集团股份有限公司 | Power battery SOH value estimation method and system |
| CN109709490A (en) * | 2018-12-29 | 2019-05-03 | 重庆小康工业集团股份有限公司 | The modification method of lithium battery system Life cycle SOC |
| CN109709490B (en) * | 2018-12-29 | 2021-09-14 | 重庆小康工业集团股份有限公司 | Correction method for full life cycle SOC of lithium battery system |
| WO2020216082A1 (en) * | 2019-04-25 | 2020-10-29 | 宁德时代新能源科技股份有限公司 | Method and apparatus for correcting state of health of battery, and management system and storage medium |
| US11668755B2 (en) | 2019-04-25 | 2023-06-06 | Contemporary Amperex Technology Co., Limited | Method and apparatus for determining available energy of battery, management system, and storage medium |
| US11656289B2 (en) | 2019-04-25 | 2023-05-23 | Contemporary Amperex Technology Co., Limited | Method and apparatus for correcting state of health of battery, management system, and storage medium |
| EP3779484A4 (en) * | 2019-04-25 | 2021-08-25 | Contemporary Amperex Technology Co., Limited | Method and apparatus for correcting state of health of battery, and management system and storage medium |
| CN110488195A (en) * | 2019-07-18 | 2019-11-22 | 安徽力高新能源技术有限公司 | A method of amendment power battery SOC |
| CN111641001A (en) * | 2020-06-05 | 2020-09-08 | 安徽江淮汽车集团股份有限公司 | Correction method, device, storage medium and device of battery system |
| CN111641001B (en) * | 2020-06-05 | 2021-07-13 | 安徽江淮汽车集团股份有限公司 | Correction method, device, storage medium and device of battery system |
| CN112415399A (en) * | 2020-10-16 | 2021-02-26 | 欣旺达电子股份有限公司 | Battery single OCV-SOC curve correction method and device and storage medium |
| CN112415399B (en) * | 2020-10-16 | 2023-10-10 | 欣旺达电动汽车电池有限公司 | Battery cell OCV-SOC curve correction method, device and storage medium |
| CN114084045A (en) * | 2021-11-10 | 2022-02-25 | 轻橙时代(深圳)科技有限责任公司 | Power battery life cycle management method |
| CN114084045B (en) * | 2021-11-10 | 2023-11-03 | 轻橙时代(深圳)科技有限责任公司 | Power battery life cycle management method |
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