CN106848451B - A kind of battery pressure difference adaptive regulation method - Google Patents
A kind of battery pressure difference adaptive regulation method Download PDFInfo
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- CN106848451B CN106848451B CN201710089397.XA CN201710089397A CN106848451B CN 106848451 B CN106848451 B CN 106848451B CN 201710089397 A CN201710089397 A CN 201710089397A CN 106848451 B CN106848451 B CN 106848451B
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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
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
-
- 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
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
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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
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4278—Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
-
- 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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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
Abstract
The present invention relates to battery technology field, disclosing is a kind of battery pressure difference adaptive regulation method.Detailed process is as follows: step 1, setting pressure differential range table measure pressure difference, calculate the distribution proportion of each pressure differential range in cycle period；Step 2, the initial value for determining Pressure difference distribution ratio in the previous cycle period calculate the difference of the initial value of maximum differential pressure distribution proportion and Pressure difference distribution ratio；If the absolute value of step 3, difference is greater than 10%, maximum three pressure differential ranges in Pressure difference distribution ratio are chosen, if the absolute value of difference is unsatisfactory for the requirement greater than 10%, continue to record pressure difference until meeting the absolute value of difference greater than 10%；Step 4 extracts a maximum pressure difference in three pressure differential ranges, the threshold value that three pressure differences of extraction are adjusted as battery management system three-level respectively.Failure pressure difference is adjusted by dynamic, wrong report pressure difference failure can be effectively prevented from, improve the validity and accuracy of Trouble Report.
Description
Technical field
The present invention relates to battery technology field, especially a kind of battery pressure difference adaptive regulation method.
Background technique
The advantages such as lithium ion battery is because its energy density is high, light weight, and self-discharge rate is low are gradually widely used.
With the development of electric car and being widely used for lithium ion battery, role of the BMS in battery status monitoring is also increasingly heavier
It wants.In general, lithium ion battery needs BMS to carry out strict control charge and discharge process, avoids overcharging, over-discharge, overheat etc..Battery
Longer using the time, cell degradation degree is more serious, and the internal resistance of cell can be gradually increased, and is deteriorated so as to cause battery with two side terminals,
Pressure difference between monomer also can it is increasing, in the traditional algorithm of BMS, be that the threshold pressure differential of battery is set as to a fixation
Value all will not match again the value within the short time, when battery after a period of use, monomer pressure difference can be with battery
Aging and increase, again artificial the threshold pressure differential can be demarcated at this time.
Because method traditional at present can only just can know that aging occurs for battery when battery frequently occurs pressure difference failure, from
And re-calibration matching is carried out to it manually.On the one hand, time and economic cost are wasted, after remodifying threshold value, is needed
High-volume more new procedures, consume man power and material.On the other hand, the threshold pressure differential of conventional method setting not necessarily meets battery
Actual use situation, may battery use early stage when it is bigger than normal, battery use latter stage when it is less than normal.
Summary of the invention
The technical problems to be solved by the present invention are: in view of the above problems, it is adaptive to provide a kind of battery pressure difference
Answer adjusting method.
The technical solution adopted by the invention is as follows: a kind of battery pressure difference adaptive regulation method, detailed process is as follows: step
1, pressure differential range table is set, pressure difference is measured, calculates the distribution proportion of each pressure differential range in cycle period；Step 2 determines
The initial value of Pressure difference distribution ratio in the previous cycle period calculates the difference of the initial value of maximum differential pressure distribution proportion and Pressure difference distribution ratio
Value；If the absolute value of step 3, difference is greater than 10%, maximum three pressure differential ranges in Pressure difference distribution ratio are chosen, if
The absolute value of difference is unsatisfactory for the requirement greater than 10%, then continues to record pressure difference until meeting the absolute value of difference greater than 10%；
Step 4 extracts a maximum pressure difference in three pressure differential ranges respectively, using three pressure differences of extraction as battery management system
The threshold value of three-level of uniting adjustment.
Further, the battery pressure difference adaptive regulation method further includes following procedure: by the pressure difference being calculated point
Value of the cloth ratio as the Pressure difference distribution ratio of lower electricity storage.
Further, the detailed process of the step 1 are as follows: pressure differential range is arranged in step 11, using 150mV as pressure difference interval
Table [1 150 300 450 750 900]；After step 12, battery management system power on, the pressure difference point of electricity storage under last time is read
Cloth number is recorded in corresponding pressure differential range；Step 13 judges whether vehicle is in travel condition, if it is, measurement vehicle
Current differential pressure, judges pressure differential range belonging to current differential pressure and corresponding Pressure difference distribution number is added 1；Step 14, setting vehicle
The time of measuring interval of current differential pressure repeats step 13, until cycle period terminates；Step 15 counts each pressure difference model
The Pressure difference distribution total degree of the Pressure difference distribution number and all pressure differential ranges that enclose, with the Pressure difference distribution of each pressure differential range
The Pressure difference distribution ratio of each corresponding pressure differential range is calculated divided by Pressure difference distribution total degree in number；Step 16, calculating terminate
Afterwards, the pressure difference statistics number by lower electricity storage is set to 0, waits and enters next cycle period.
Further, in step 2, the determination process of the initial value of the Pressure difference distribution ratio are as follows: judge electricity storage under last time
Pressure difference distribution ratio whether be 0, if it is 0 Pressure difference distribution ratio initial value be battery management system scalar quantity, such as
Fruit is not the value that the initial value of 0 Pressure difference distribution ratio is electricity storage under last time.
Compared with prior art, having the beneficial effect that through real-time statistics battery management system by adopting the above technical scheme
Pressure difference simultaneously calculates, and can adaptively adjust failure threshold pressure differential, save the cost manually adjusted；Dynamic adjustment failure pressure
Difference can be effectively prevented from wrong report pressure difference failure, improve the validity and accuracy of Trouble Report.
Specific embodiment
The present invention is described further below.
A kind of battery pressure difference adaptive regulation method, detailed process is as follows: step 1, setting pressure differential range table, such as with
150mV is interval, and pressure differential range table is [0 150 300 450 750 900], has and is less than 0mV, 0-150mV, 150mV-
300mV, 300mV-450mV, 450mV-750mV, 750mV-900mV, it is greater than 7 pressure differential ranges of 900mV, measures pressure difference, meter
Calculate the Pressure difference distribution ratio IH_DeltaCellUPerc_Disp of each pressure differential range in cycle period；Step 2 determines currently
The initial value IH_DeltaCellUPercInitia_Disp of Pressure difference distribution ratio in cycle period calculates maximum differential pressure distribution proportion
The difference of IH_DeltaCellUPerc_Disp and the initial value IH_DeltaCellUPercInitia_Disp of Pressure difference distribution ratio；
If the absolute value of step 3, difference is greater than 10%, maximum three pressure differential ranges in Pressure difference distribution ratio are chosen, if difference
Absolute value be unsatisfactory for the requirement greater than 10%, then continue to record pressure difference and be greater than 10% until meeting the absolute value of difference；Step
4, a maximum pressure difference in three pressure differential ranges is extracted respectively, using three pressure differences of extraction as battery management system three
The threshold value of grade adjustment, i.e., if tri- pressure differential ranges of 150mV-300mV, 300mV-450mV, 450mV-750mV are 7 pressure differences
Maximum three of Pressure difference distribution ratio among range, then 300mV, 450mV and 750mV are the threshold value of three-level adjustment.
The battery pressure difference adaptive regulation method further includes following procedure: the Pressure difference distribution ratio IH_ that will be calculated
Value of the DeltaCellUPerc_Disp as the Pressure difference distribution ratio of lower electricity storage.
The detailed process of the step 1 are as follows: pressure differential range table [0 150 is arranged in step 11, using 150mV as pressure difference interval
300 450 750 900], have less than 0mV, 0-150mV, 150mV-300mV, 300mV-450mV, 450mV-750mV,
750mV-900mV, it is greater than 7 pressure differential ranges of 900mV；After step 12, battery management system power on, electricity storage under last time is read
Pressure difference distribution number IH_DeltaCellUNumNVM_Disp, be recorded in corresponding pressure differential range；Step 13 judges vehicle
Whether travel condition is in, if it is, measurement vehicle current differential pressure, judges pressure differential range belonging to current differential pressure and will correspond to
Pressure difference distribution number IH_DeltaCellUNumNVM_Disp add 1；Step 14 is arranged between the time of measuring of vehicle current differential pressure
Every repetition step 13, until cycle period terminates；Step 15, the Pressure difference distribution number for counting each pressure differential range and institute
There is the Pressure difference distribution total degree of pressure differential range, with the Pressure difference distribution number of each pressure differential range divided by Pressure difference distribution total degree,
The Pressure difference distribution ratio IH_DeltaCellUPerc_Disp of each corresponding pressure differential range is calculated；Step 16 calculates knot
The pressure difference statistics number of lower electricity storage is set to 0, waits and enter next cycle period by Shu Hou.
In the step 2, the determination process of the initial value of the Pressure difference distribution ratio are as follows: judge the pressure difference of electricity storage under last time
Whether distribution proportion is 0, and the initial value IH_DeltaCellUPercInitia_Disp if it is 0 Pressure difference distribution ratio is
Battery management system scalar quantity, the initial value IH_DeltaCellUPercInitia_Disp of Pressure difference distribution ratio if not for 0
For the value of electricity storage under last time.
The invention is not limited to specific embodiments above-mentioned.The present invention, which expands to, any in the present specification to be disclosed
New feature or any new combination, and disclose any new method or process the step of or any new combination.If this
Field technical staff is altered or modified not departing from the unsubstantiality that spirit of the invention is done, should belong to power of the present invention
The claimed range of benefit.
Claims (4)
1. a kind of battery pressure difference adaptive regulation method, which is characterized in that including following procedure:
Step 1, setting pressure differential range table, measure pressure difference, calculate the distribution proportion of each pressure differential range in cycle period；
Step 2, the initial value for determining Pressure difference distribution ratio in the previous cycle period calculate maximum differential pressure distribution proportion and Pressure difference distribution
The difference of the initial value of ratio；
If the absolute value of step 3, difference is greater than 10%, maximum three pressure differential ranges in Pressure difference distribution ratio are chosen, if
The absolute value of difference is unsatisfactory for the requirement greater than 10%, then continues to record pressure difference until meeting the absolute value of difference greater than 10%；
Step 4 extracts a maximum pressure difference in three pressure differential ranges respectively, using three pressure differences of extraction as cell tube
The threshold value of reason system three-level adjustment.
2. battery pressure difference adaptive regulation method as described in claim 1, which is characterized in that further include following procedure: will count
Value of the obtained Pressure difference distribution ratio as the Pressure difference distribution ratio of lower electricity storage.
3. battery pressure difference adaptive regulation method as claimed in claim 2, which is characterized in that the detailed process of the step 1
Are as follows: step 11, using 150mV as pressure difference interval is arranged pressure differential range table [1 150 300 450 750 900]；Step 12, battery
After management system powers on, the Pressure difference distribution number of electricity storage under last time is read, is recorded in corresponding pressure differential range；Step 13,
Judge whether vehicle is in travel condition, if it is, measurement vehicle current differential pressure, judges pressure differential range belonging to current differential pressure
And corresponding Pressure difference distribution number is added 1；Step 14, the time of measuring interval that vehicle current differential pressure is arranged repeat step 13, directly
Terminate to cycle period；The pressure difference of step 15, the Pressure difference distribution number for counting each pressure differential range and all pressure differential ranges
It is distributed total degree, with the Pressure difference distribution number of each pressure differential range divided by Pressure difference distribution total degree, it is each that correspondence is calculated
The Pressure difference distribution ratio of a pressure differential range；The pressure difference statistics number of lower electricity storage after calculating, is set to 0, waited by step 16
Into next cycle period.
4. battery pressure difference adaptive regulation method as claimed in claim 3, which is characterized in that in step 2, the Pressure difference distribution
The determination process of the initial value of ratio are as follows: whether the Pressure difference distribution ratio for judging electricity storage under last time is 0, if it is 0 pressure
The initial value of poor distribution proportion is battery management system scalar quantity, and the initial value of Pressure difference distribution ratio is electric under last time if not for 0
The value of storage.
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| CN201710089397.XA CN106848451B (en) | 2017-02-20 | 2017-02-20 | A kind of battery pressure difference adaptive regulation method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101103487A (en) * | 2005-01-14 | 2008-01-09 | 佩勒克股份有限公司 | Method for the balanced charging of a lithium-ion or lithium-polymer battery |
| CN103972965A (en) * | 2014-05-14 | 2014-08-06 | 广东国光电子有限公司 | Dynamic adjustment type battery pack active equalizing method |
| CN105866689A (en) * | 2016-03-28 | 2016-08-17 | 华北电力科学研究院有限责任公司 | Method and apparatus for evaluating operation state of battery pack string |
| CN106154165A (en) * | 2015-03-27 | 2016-11-23 | 国家电网公司 | The appraisal procedure of a kind of high capacity cell energy-storage system performance and assessment system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10374444B2 (en) * | 2014-08-26 | 2019-08-06 | Elite Power Innovations, Llc. | Method and system for battery management |
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- 2017-02-20 CN CN201710089397.XA patent/CN106848451B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101103487A (en) * | 2005-01-14 | 2008-01-09 | 佩勒克股份有限公司 | Method for the balanced charging of a lithium-ion or lithium-polymer battery |
| CN103972965A (en) * | 2014-05-14 | 2014-08-06 | 广东国光电子有限公司 | Dynamic adjustment type battery pack active equalizing method |
| CN106154165A (en) * | 2015-03-27 | 2016-11-23 | 国家电网公司 | The appraisal procedure of a kind of high capacity cell energy-storage system performance and assessment system |
| CN105866689A (en) * | 2016-03-28 | 2016-08-17 | 华北电力科学研究院有限责任公司 | Method and apparatus for evaluating operation state of battery pack string |
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Effective date of registration: 20210428 Address after: 406, 4th floor, building 9, no.388, section 3, Chenglong Avenue, Chengdu Economic and Technological Development Zone (Longquanyi District), Sichuan 610000 Patentee after: Chengdu Yajun New Energy Technology Co.,Ltd. Address before: 610000 Sichuan city of Chengdu province Tianfu Tianfu Avenue South Huayang Street No. 846 Patentee before: CHENGDU RAJA NEW ENERGY AUTOMOBILE SCIENCE AND TECHNOLOGY Co.,Ltd. |