CN104166102B - Judgment method for SOC use interval of automotive power battery pack - Google Patents
Judgment method for SOC use interval of automotive power battery pack Download PDFInfo
- Publication number
- CN104166102B CN104166102B CN201410417704.9A CN201410417704A CN104166102B CN 104166102 B CN104166102 B CN 104166102B CN 201410417704 A CN201410417704 A CN 201410417704A CN 104166102 B CN104166102 B CN 104166102B
- Authority
- CN
- China
- Prior art keywords
- soc
- certain
- discharge
- battery pack
- voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a judgment method for an SOC use interval of an automotive power battery pack. The method includes the steps of taking the automotive power battery pack which has been used on an automobile and has passed a certain-distance road test, conducting charging with a certain charging current till the voltage is the terminal voltage in the certain SOC state after the automotive power battery pack is put aside for a certain period of time at a certain environment temperature, conducting discharging with a certain discharging current till the voltage is the cut-off voltage corresponding to the corresponding discharging current after the automotive power battery pack is put aside for a certain period of time, and obtaining the total discharging time; finding an inflection point A and an inflection point B according to an obtained discharging curve, wherein the point where the discharging voltage drop speed in the discharging curve begins to be abnormal is the inflection point A, and the point where the discharging voltage drop speed in the discharging curve returns to normal is the inflection point B; calculating the SOC values corresponding to the inflection point A and the inflection point B according to a corresponding formula, wherein the range of the SOC values corresponding to the portion, between the inflection point A and the inflection point B, of the discharging curve is the SOC use interval of the automotive power battery pack. The method is easy to operate, and the SOC use interval of the automotive power battery pack can be rapidly found.
Description
Technical field
The present invention relates to a kind of SOC of set of cells is using interval decision method, particularly to a kind of Vehicular dynamic battery
The SOC of group is using interval decision method.
Background technology
21 century is the challenge epoch that human society faces energy shortage and environmental pollution improvement：Petroleum resources subtract year by year
Few, oil price progressively rises, and reduces auto-pollution and energy saving has become the Tough questions of countries in the world government faces.Because of battery
Technology and Cost Problems, exploitation hybrid vehicle is that situation is become.In hybrid vehicle, high-power due to employing
Energy storage device provides instantaneous energy can reduce size of engine to automobile, improves efficiency, reduces discharge and fuel oil disappears
Consumption, and can recover energy when being braked and slow down.Ni-MH power cell has safe, the high-specific-power, long-life, resistance to
Super-charge super-discharge, recycling capable of circulation, the excellent overall characteristic such as pollution-free, are that current hybrid-electric car application is the most consentient
Battery system, is also unique scale the battery system through extensive actual verification.In order to ensure cell safety and car load control
The execution of system strategy, the research of HEV automobile batteries management system (BMS) is particularly important.Wherein SOC is main as battery behavior
Influence factor, for BMS management and control battery SOC using interval be all the time batteries management system study heat
One of point and difficult point.Existing HEV Ni-MH power cell group SOC using interval evaluation methodology is, monitored by BMS and
Management SOC is using interval, but SOC estimation error affects so that cannot obtain with factors such as use time, temperature, electric currents
Relatively accurate set of cells SOC using interval, thus impact HEV Ni-H 2 power cannot be known in car load factory and Battery Plant up till now
The SOC of set of cells is using interval.
Content of the invention
The present invention is intended to provide a kind of SOC of Vehicular dynamic battery group simple to operate is using interval decision method.
The present invention is realized by below scheme：
A kind of SOC of Vehicular dynamic battery group using interval decision method, take onboard using and through a spacing
Vehicular dynamic battery group after the examination of road, at a temperature of certain environment, after shelving certain time, is filled using certain charging current
Electricity to blanking voltage is the terminal voltage under certain SOC state, after shelving certain time, is discharged to phase using certain discharge current
Answer the corresponding blanking voltage of discharge current, obtain total discharge time；According to the discharge curve drawing, find flex point A, B, wherein,
In discharge curve, discharge voltage decrease speed starts abnormal point as flex point A, reduction of speed under discharge voltage in discharge curve
Degree terminates the normal point of abnormal restoring and is flex point B, the SOC value according to corresponding to formula (1) calculates flex point A, B,
The SOC that SOC value scope corresponding to discharge curve between flex point A, B is Vehicular dynamic battery group uses area
Between.
Described charging current is 0.5C～4C, and the blanking voltage of charging is the terminal voltage under 65%～95%SOC state.Institute
Stating discharge current is 0.2C～3C.
Further, described charging current is preferably 1C～3C, and the blanking voltage of charging is preferably 75%～85%SOC shape
Terminal voltage under state.
Further, described discharge current is preferably 0.25C～1C.
For making test data more accurate, can preferably be used for analysis and use, generally 23～27 DEG C of described ambient temperature.
The battery carrying on HEV, in order to improve being filled with and releasing performance of its electric power, can retain some uncharged parts simultaneously
Make it keep certain electricity, discharge and recharge is then locally repeated, it is to avoid fully charged.Although so not occurring on surface
Charge, but be because that conductive material can not possibly completely the same be uniformly distributed, thus leading to local that overcharge can occur.Due to Ni
(OH)2Lack electric conductivity, so typically Co compound all can be added as conductive material.If Ni (OH)2In particle, exist not
There is the isolated β-Ni (OH) contacting with Co compound2Particle, the β-Ni (OH) contacting with Co compound during charging2Particle can be first
First it is oxidized to β-NiOOH.But in electrode, there is the isolated β-Ni (OH) not contacted with Co compound2Particle, at it
Be oxidized to β-NiOOH before, conductive network prosperity position generation first β-NiOOH can be further oxided into γ-
NiOOH.Therefore, if carrying out local charge and discharge cycles, in conductive network flourishing part, charging current concentration of local can occur,
So that Ni is extremely some is locally generated γ-NiOOH, result in memory effect.
The inventive method, simple to operate and the SOC of Vehicular dynamic battery group can be quickly found out using interval, be Battery Plant and
Automobile factory provides accurate SOC using interval reference data, is conducive to Battery Plant technical staff and automobile factory technology people
The common optimization design of member, so that the SOC of Vehicular dynamic battery group uses interval as far as possible in scope of design, is conducive to automobile-used dynamic
Power set of cells is preferably applied on hybrid vehicle, extends the service life of set of cells.
Brief description
Fig. 1：The discharge curve of automobile-used Ni-MH power cell group in embodiment 1
Fig. 2：The discharge curve of automobile-used Ni-MH power cell group in embodiment 2
Specific embodiment
The invention will be further described with reference to embodiments, but the invention is not limited in the statement of embodiment.
Embodiment 1
Take on XX hybrid electric vehicle using and in certain proving ground, average rate is travelled on the road of ramp and controls 20
Any 4 groups of ni-mh D6000 × 6 Vehicular dynamic battery groups in～30km/h, the battery bag after 2.6 ten thousand kilometers of the examination of roads, 23
Under～27 DEG C of ambient temperatures, after shelving 5min, using 13A charging current for charging to blanking voltage for 8.771V (without the examination of road
Ni-mh D6000 × 6 Vehicular dynamic battery group is fully charged with same charging current, the 85%SOC shape finding on charging curve
Corresponding charging voltage under state), after shelving 5min, be discharged to blanking voltage 6.0V using 2A discharge current, 4 Battery pack groups total
Discharge time is respectively 149min, 146.4min, 146.4min, 146.4min, and its discharge curve is as shown in figure 1,4 Battery pack groups
The point that discharge voltage decrease speed starts to occur exception in discharge curve is to be flex point A corresponding discharge time
102.8min, it is that flex point B corresponds to that 4 Battery pack groups discharge voltage decrease speed in discharge curve terminates the normal point of abnormal restoring
Discharge time be 133.4min, respectively by data substitution formula calculate, the corresponding SOC value of flex point A of 4 Battery pack groups
It is respectively 25.67%, 24.22%, 24.22%, 24.22%, the corresponding SOC value of flex point B of 4 Battery pack groups is respectively
8.67%th, 7.22%, 7.22%, 7.22%, show that the SOC of this 4 groups of Vehicular dynamic battery groups is respectively 8.67% using interval
～25.67%, 7.22%～24.22%, 7.22%～24.22%, 7.22%～24.22%, estimate this 4 groups of power train in vehicle application electricity
Pond group produce on this car memory effect interval be respectively 8.67%～25.67%SOC, 7.22%～24.22%SOC,
7.22%～24.22%SOC, 7.22%～24.22%SOC.
Embodiment 2
Take on XX hybrid electric vehicle using and travel average rate in certain proving ground under comprehensive road condition and control
Any 4 groups of ni-mh D6000 × 6 Vehicular dynamic battery groups in 60～80km/h, the battery bag after 8.6 ten thousand kilometers of the examination of roads,
Under 23～27 DEG C of ambient temperatures, after shelving 5min, using 13A charging current for charging to blanking voltage for 8.771V (without the examination of road
Ni-mh D6000 × 6 Vehicular dynamic battery group fully charged with same charging current, the 85%SOC that finds on charging curve
Corresponding charging voltage under state), after shelving 5min, it is discharged to blanking voltage 6.0V using 2A discharge current, 4 Battery pack groups
Total discharge time is respectively 168.10min, 166.20min, 169.52min, 168.63min, and its discharge curve is as shown in Fig. 24
The point that Battery pack group discharge voltage decrease speed in discharge curve starts to occur exception is to be flex point A corresponding discharge time
12.8min, it is that flex point B corresponds to that 4 Battery pack groups discharge voltage decrease speed in discharge curve terminates the normal point of abnormal restoring
Discharge time be 38.4min, respectively by data substitution formula calculate, the corresponding SOC value of flex point A of 4 Battery pack groups
It is respectively 86.28%, 85.22%, 87.07%, 86.57%, the corresponding SOC value of flex point B of 4 Battery pack groups is respectively
72.06%th, 71.00%, 72.84%, 72.35%, show that the SOC of this 4 groups of Vehicular dynamic battery groups is respectively using interval
72.06%～86.28%, 71.00%～85.22%, 72.84%～87.07%%, 72.35%～86.57%, estimate this 4
Group Vehicular dynamic battery group produces on this car the interval respectively 72.06%～86.28%SOC of memory effect, 71.00%～
85.22%SOC, 72.84%～87.07%%SOC, 72.35%～86.57%SOC.
Claims (5)
1. a kind of SOC of Vehicular dynamic battery group using interval decision method it is characterised in that：Take onboard using simultaneously warp
Cross the Vehicular dynamic battery group after certain distance the examination of road, at a temperature of certain environment, after shelving certain time, filled using certain
Electric current charges to the terminal voltage that blanking voltage is under 65%～95%SOC state, after shelving certain time, is put using certain
Electric current discharge, to the corresponding blanking voltage of corresponding discharge current, obtains total discharge time；According to the discharge curve drawing, find
Flex point A, B, wherein, in discharge curve, discharge voltage decrease speed starts abnormal point as flex point A, puts in discharge curve
Piezoelectric voltage decrease speed terminates the normal point of abnormal restoring and is flex point B, the SOC according to corresponding to formula (1) calculates flex point A, B
Value,
SOC value scope corresponding to discharge curve between flex point A, B is the SOC of Vehicular dynamic battery group using interval.
2. the SOC of Vehicular dynamic battery group as claimed in claim 1 using interval decision method it is characterised in that：Described
Charging current is 0.5C～4C.
3. the SOC of Vehicular dynamic battery group as claimed in claim 1 using interval decision method it is characterised in that：Described
Discharge current is 0.2C～3C.
4. the SOC of Vehicular dynamic battery group as claimed in claim 2 using interval decision method it is characterised in that：Described
Charging current is 1C～3C, and the blanking voltage of charging is the terminal voltage under 75%～85%SOC state.
5. the SOC of Vehicular dynamic battery group as claimed in claim 1 using interval decision method it is characterised in that：Described
Discharge current is 0.25C～1C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410417704.9A CN104166102B (en) | 2014-08-22 | 2014-08-22 | Judgment method for SOC use interval of automotive power battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410417704.9A CN104166102B (en) | 2014-08-22 | 2014-08-22 | Judgment method for SOC use interval of automotive power battery pack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104166102A CN104166102A (en) | 2014-11-26 |
| CN104166102B true CN104166102B (en) | 2017-02-22 |
Family
ID=51910004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410417704.9A Active CN104166102B (en) | 2014-08-22 | 2014-08-22 | Judgment method for SOC use interval of automotive power battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104166102B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106597314B (en) * | 2017-01-16 | 2019-03-15 | 先进储能材料国家工程研究中心有限责任公司 | The determination method of automobile-used Ni-MH power cell packet true charged holding and corresponding voltage |
| KR102066703B1 (en) * | 2017-01-24 | 2020-01-15 | 주식회사 엘지화학 | Apparatus and method for managing a battery |
| CN107656210B (en) * | 2017-09-14 | 2020-01-21 | 广州市香港科大霍英东研究院 | Method for estimating battery electric quantity state |
| CN109669143B (en) * | 2019-01-30 | 2021-01-29 | 中航锂电（洛阳）有限公司 | Battery pack capacity evaluation method |
| CN109870655B (en) * | 2019-03-26 | 2019-12-03 | 上海工程技术大学 | A kind of evaluation method for lithium battery SOC |
| CN110071337A (en) * | 2019-03-29 | 2019-07-30 | 中时讯通信建设有限公司 | A kind of base station storage batteries Life cycle optimization method |
| CN112578296B (en) * | 2019-09-27 | 2022-03-15 | 比亚迪股份有限公司 | Battery capacity estimation method and apparatus, and computer storage medium |
| KR20210046407A (en) | 2019-10-18 | 2021-04-28 | 주식회사 엘지화학 | Apparatus and method for estimating state of charge |
| CN113866649A (en) * | 2020-06-30 | 2021-12-31 | 比亚迪股份有限公司 | Battery state calculation method, battery state calculation device, and storage medium |
| CN113049961B (en) * | 2021-02-26 | 2022-07-19 | 佛山职业技术学院 | DZSOC algorithm of lithium iron phosphate battery |
| CN113315210B (en) * | 2021-07-07 | 2023-11-24 | 武汉问道信息技术有限公司 | Method, system and electronic equipment for obtaining optimal working voltage of rechargeable battery |
| CN115372843B (en) * | 2022-08-26 | 2025-01-28 | 秦皇岛远舟工业气体有限公司 | A lithium battery charging and discharging function detection management method, device and storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1182503A (en) * | 1996-01-26 | 1998-05-20 | 雅马哈发动机株式会社 | Method and device for producing memory effect of battery |
| CN1332846A (en) * | 1998-09-15 | 2002-01-23 | 联合讯号公司 | Apparatus and method for detecting memory effect in nickel-cadmium batteries |
| CN101034137A (en) * | 2006-03-07 | 2007-09-12 | 新德科技股份有限公司 | Battery cut-off discharge voltage measurement and correction method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3964635B2 (en) * | 2001-06-20 | 2007-08-22 | 松下電器産業株式会社 | Memory effect detection method and solution |
| KR100692404B1 (en) * | 2004-12-21 | 2007-03-09 | 현대자동차주식회사 | Battery charge calculation algorithm to prevent memory effects |
| JP2013176271A (en) * | 2012-02-27 | 2013-09-05 | Honda Motor Co Ltd | Determination device for determining memory effect of battery and discharge control device of battery |
-
2014
- 2014-08-22 CN CN201410417704.9A patent/CN104166102B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1182503A (en) * | 1996-01-26 | 1998-05-20 | 雅马哈发动机株式会社 | Method and device for producing memory effect of battery |
| CN1332846A (en) * | 1998-09-15 | 2002-01-23 | 联合讯号公司 | Apparatus and method for detecting memory effect in nickel-cadmium batteries |
| CN101034137A (en) * | 2006-03-07 | 2007-09-12 | 新德科技股份有限公司 | Battery cut-off discharge voltage measurement and correction method |
Non-Patent Citations (3)
| Title |
|---|
| 李宁.氢镍电池的记忆效应.《电池工业》.2002,第7卷(第2期),69. * |
| 混合动力汽车电池系统SOC使用范围的设计;杨帆;《电池工业》;20140630;第19卷(第3期);153-156 * |
| 陆全根.镍镉电池的"记忆效应".《电子制作》.1999,(第12期),39-40. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104166102A (en) | 2014-11-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104166102B (en) | Judgment method for SOC use interval of automotive power battery pack | |
| CN102756661B (en) | Determination method and device for state of charge of vehicular battery | |
| Carter et al. | An improved lead–acid battery pack model for use in power simulations of electric vehicles | |
| Stroe et al. | Accelerated aging of Lithium-ion batteries based on electric vehicle mission profile | |
| CN102930173A (en) | SOC(state of charge) online estimation method for lithium ion battery | |
| Li et al. | Study on battery management system and lithium-ion battery | |
| CN105911471B (en) | A kind of device and method for the health parameter calculating batteries of electric automobile | |
| Albertus et al. | II. A combined model for determining capacity usage and battery size for hybrid and plug-in hybrid electric vehicles | |
| CN104512266B (en) | Power supply management method in automobile starting process, and automobile power supply system | |
| Mkahl et al. | Modeling and simulation of standalone photovoltaic charging stations for electric vehicles | |
| Wu et al. | Study the performance of battery models for hybrid electric vehicles | |
| De Vroey et al. | Plug-to-wheel energy balance-results of a two years experience behind the wheel of electric vehicles | |
| Shen et al. | An advanced electro-thermal cycle-lifetime estimation model for LiFePO 4 batteries | |
| CN108749597B (en) | Rapid charging method and device for electric automobile and electric automobile | |
| CN104300184A (en) | Method for realizing battery charging and discharging based on adaptive-fuzzy inference system | |
| Lo | Effect of temperature on lithium-iron phosphate battery performance and plug-in hybrid electric vehicle range | |
| CN104590249A (en) | Method and system for controlling dynamic shift of HEV working modes | |
| CN106597314A (en) | Vehicle NI-MH power battery pack actual charge maintenance and corresponding voltage determination method | |
| CN104391251A (en) | Data acquisition method of electric vehicle battery management system | |
| Omar et al. | Lithium iron phosphate-Assessment of calendar life and change of battery parameters | |
| Salehen et al. | Development of battery management systems (BMS) for electric vehicles (EVs) in Malaysia | |
| Pathiyil et al. | Battery model for Hybrid Electric Vehicle corrected for self-discharge and internal resistance | |
| Li et al. | Large-scale battery system modeling and analysis for emerging electric-drive vehicles | |
| Mondru et al. | Batteries comparative analysis and their dynamic model for electric vehicular technology | |
| Zhao et al. | A quantitative comparative study of efficiency for battery-ultracapacitor hybrid systems |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: HUNAN CORUN YUANXIN ENERGY SOURCES CO., LTD. Free format text: FORMER OWNER: HUNAN COPOWER EV BATTERY CO., LTD. Effective date: 20141231 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20141231 Address after: Tongzi City, Hunan province 410205 Changsha Lugu national hi tech Industrial Development Zone, No. 348 West Slope Applicant after: Hunan Corun New Energy Co.,Ltd. Address before: Tongzi City, Hunan province 410205 Changsha Lugu national hi tech Industrial Development Zone, No. 348 West Slope Applicant before: HUNAN COPOWER EV BATTERY Co.,Ltd. |
|
| ASS | Succession or assignment of patent right |
Owner name: CORUN HYBRID TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: HUNAN CORUN YUANXIN ENERGY SOURCES CO., LTD. Effective date: 20150226 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20150226 Address after: Tongzi City, Hunan province 410205 Changsha Lugu national hi tech Industrial Development Zone, No. 348 West Slope Applicant after: CORUN HYBRID POWER TECHNOLOGY Co.,Ltd. Address before: Tongzi City, Hunan province 410205 Changsha Lugu national hi tech Industrial Development Zone, No. 348 West Slope Applicant before: Hunan Corun New Energy Co.,Ltd. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 528031, room 1, building 131, No. 601-604, Hua Hua Xi Road, Chancheng District, Guangdong, Foshan, China, A Patentee after: CORUN HYBRID POWER TECHNOLOGY Co.,Ltd. Address before: Tongzi City, Hunan province 410205 Changsha Lugu national hi tech Industrial Development Zone, No. 348 West Slope Patentee before: CORUN HYBRID POWER TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230420 Address after: 410221 No. 348, Tongzipo West Road, Changsha High tech Development Zone, Changsha City, Hunan Province Patentee after: HUNAN COPOWER EV BATTERY Co.,Ltd. Address before: 528031 room 601-604, building a, building 1, No. 131, Jihua West Road, Chancheng District, Foshan City, Guangdong Province Patentee before: CORUN HYBRID POWER TECHNOLOGY Co.,Ltd. |