CN105548907A - New energy vehicle data recording method based on battery management system - Google Patents
New energy vehicle data recording method based on battery management system Download PDFInfo
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- CN105548907A CN105548907A CN201610027448.1A CN201610027448A CN105548907A CN 105548907 A CN105548907 A CN 105548907A CN 201610027448 A CN201610027448 A CN 201610027448A CN 105548907 A CN105548907 A CN 105548907A
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- data
- battery
- management system
- new energy
- capacity
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/392—Determining battery ageing or deterioration, e.g. state of health
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
- G01R31/3835—Arrangements for monitoring battery or accumulator variables, e.g. SoC involving only voltage measurements
Abstract
The invention discloses a new energy vehicle data recording method based on a battery management system, and the method comprises the following steps: S1, recording the voltage data and capacity data of a battery at an initial moment; S2, collecting the voltage data of the battery in a working process in real time, and judging the current voltage data of the battery based on a preset threshold value delta V: executing the next step if the current voltage data meets a judgment condition, or else, continuously carrying out the step S2; S3, carrying out the capacity increment peak value calculation of the voltage data meeting the condition, and recording and storing the voltage data and the capacity increment peak value data. According to the technical scheme of the invention, the method can solve problems, caused by the limited space of the battery management system and the equal-time-interval data recording, of data overflow and overlarge transmission pressure in the prior art.
Description
Technical field
The present invention relates to the field of battery management of new energy vehicle, particularly relate to a kind of new energy vehicle data record method based on battery management system.
Background technology
In order to tackle day by day serious environmental pollution and energy crisis, the exploitation of new energy vehicle and universal extremely urgent.Electrokinetic cell as the core component of new energy vehicle power system, its operational reliability to the security of vehicle operating and high efficiency most important.In order to ensure power drive system reliability of operation and validity, battery management system is absolutely necessary.Run as monitoring and protect the core component in battery gordian technique; battery management system (BatteryManagementSystem; abbreviation BMS) not only need the external variable recording battery; as electric current, voltage, temperature etc.; the result of dump energy and power level prediction should be provided simultaneously, and possess the system ensemble of carrying out the function set such as intelligent charge and cell safety diagnosis.Due to battery management system limited storage space and usually with constant duration record data, in system control process, often have the situation of data from overflow to occur, simultaneously also increased the weight of the pressure of data transmission procedure.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of new energy vehicle data record method based on battery management system, to solve due to battery management system limited space and constant duration record data in prior art, and the data from overflow caused and the excessive problem of transmission pressure.
For solving the problems of the technologies described above, the present invention adopts following technical proposals:
Based on the new energy vehicle data record method of battery management system, the step of the method comprises:
S1, record initial time voltage data and capacity data;
Battery voltage data in S2, the Real-time Collection course of work, and based on predetermined threshold value △ V, current battery level data are judged; If meet Rule of judgment, then perform step S3; If do not meet Rule of judgment, then continue to judge;
S3, the calculating of capacity increment peak value is carried out to the battery voltage data satisfied condition, record and store this voltage data and capacity increment peak-data.
Preferably, described initial time is the moment that battery management system is started working.
Preferably, described predetermined threshold value △ V requires to set according to Practical Project.
Preferably, basis in described step S2 | V
2-V
1|>=△ V judges current battery level data; Wherein, V
2for voltage data current to be judged, V
1for the voltage data of previous record.
Preferably, basis in described step S3
calculate battery capacity increment peak-data; Wherein, P
2for V
2capacity increment peak-data, Q
2and Q
1be respectively V
2and V
1battery capacity data.
Preferably, the battery voltage data with judgement in the method and capacity data are stored in the buffer area of battery management system; The data meeting Rule of judgment are stored in the persistent storage of battery management system.
Beneficial effect of the present invention is as follows:
Technical scheme of the present invention has higher tolerance to battery management system measuring error, can be used for the battery data analysis under discontinuous use procedure or off-line state; Compared with constant duration recording mode, adopt recorded data total amount of the present invention significantly to reduce, effectively alleviate the transmission of data and store pressure; Accurately can reappear the data of the recording mode adopting constant duration simultaneously, achieve taking into account of data transmission rapidity and accuracy; In addition, recorded data of the present invention can be directly used in the analysis of cell health state, for the agine mechaism obtained in battery use procedure provides foundation.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail;
Fig. 1 illustrates the schematic diagram of new energy vehicle data record method of the present invention;
Fig. 2 illustrates the curve shape schematic diagram of institute of the present invention recording method under different voltage spaces value;
Fig. 3 illustrates the schematic diagram of data record of the present invention and storing process;
Fig. 4 illustrates the schematic diagram adopting constant duration record data;
Fig. 5 illustrates the schematic diagram adopting the method for the invention record data;
Fig. 6 illustrates the comparison schematic diagram of prior art and the recorded amount of this method;
Fig. 7 illustrates and utilizes recorded data of the present invention to reappear the schematic diagram adopting constant duration recording mode recorded.
Embodiment
In order to be illustrated more clearly in the present invention, below in conjunction with preferred embodiments and drawings, the present invention is described further.Parts similar in accompanying drawing represent with identical Reference numeral.It will be appreciated by those skilled in the art that specifically described content is illustrative and nonrestrictive, should not limit the scope of the invention with this below.
As shown in Figure 1, the invention discloses a kind of new energy vehicle data record method based on battery management system that can be applicable to the independent charge/discharge of battery, the method comprises:
Battery initial time voltage data when S1, record battery management system are started working and capacity data.
Judge according to the real-time battery voltage data of voltage spaces value △ V to battery management system collection preset in S2, the course of work; Basis in this step | V
2-V
1|>=△ V judges current battery level data, wherein, and V
2for voltage data current to be judged, V
1for the voltage data of previous record.
S3, capacity data to the battery voltage data and current time that meet Rule of judgment, obtain capacity increment peak-data by data operation, record storage voltage data and capacity increment peak-data; Basis in this step
calculate battery capacity increment peak-data; Wherein, P
2for V
2capacity increment peak-data, Q
2and Q
1be respectively V
2and V
1battery capacity data.
As shown in Figure 2, when different voltage spaces value △ V, the curve shape utilizing the method for the invention to record is substantially constant, although there occurs change at the height at second peak, but its position changes not yet, illustrate that the present invention has higher tolerance to battery management system measuring error.
As shown in Figure 3, be data record of the present invention and storing process, voltage data to be judged and capacity data etc. are stored in BMS buffer area, and the data satisfied condition are stored in BMS persistent storage, can be stored in background server when data volume is excessive.Utilize the storage data of background server, recorded data of the present invention can be used for the battery data analysis under discontinuous use procedure or off-line state.
Below by one group of example, the invention will be further described:
The present invention is under the integrality ensureing actual motion environment and tested object and conforming prerequisite, for constant-current charging of battery process, wherein, state-of-charge (the StateofCharge that battery is initial, be called for short SOC) be 0%, charging current is 1/3C, when cell voltage reaches charge cutoff voltage, this charging process terminates, whole process adopts constant duration recording mode and the present invention to carry out data record (Δ V gets 4mV) respectively: as shown in Figure 4, what adopt the reflection of constant duration recording mode recorded data is the variation relation of voltage with charging capacity, i.e. known battery charging curve, as shown in Figure 5, adopt recorded data of the present invention then to describe the variation relation of capacity increment peak value with voltage, can be used as the data basis of capacity increment analytic approach.As shown in Figure 6, recorded data total amount of the present invention is only 1/65 of the data volume adopting equal time constant duration record, and record data volume significantly reduces, and effectively alleviates the transmission of data and stores pressure.
Capacity increment analytic approach described in this programme is as a kind of in-situ observation method, obtain incremental capacity plot (i.e. the present invention record variation relation) by charging/discharging voltage curve and can detect the small and electrochemical properties progressively changed of battery, and the variation tendency of every for curve part combined with the thermodynamics and kinetics characteristic of battery, and then obtain the change procedure of cell degradation process in which materials characteristic.
With the capacity data of constant duration recording mode for interpolation point, utilize the present invention record voltage data between consecutive point and capacity data carries out linear interpolation, the employing constant duration recording mode recorded data restored can be obtained.As shown in Figure 7, the employing constant duration recording mode recorded data error of recovery is within 1mV.
Obviously; the above embodiment of the present invention is only for example of the present invention is clearly described; and be not the restriction to embodiments of the present invention; for those of ordinary skill in the field; can also make other changes in different forms on the basis of the above description; here cannot give exhaustive to all embodiments, every belong to technical scheme of the present invention the apparent change of extending out or variation be still in the row of protection scope of the present invention.
Claims (6)
1. based on the new energy vehicle data record method of battery management system, it is characterized in that, the step of the method comprises:
S1, record initial time voltage data and capacity data;
Battery voltage data in S2, the Real-time Collection course of work, and based on predetermined threshold value △ V, current battery level data are judged; If meet Rule of judgment, then perform step S3; If do not meet Rule of judgment, then continue to judge;
S3, the calculating of capacity increment peak value is carried out to the battery voltage data satisfied condition, record and store this voltage data and capacity increment peak-data.
2. new energy vehicle data record method according to claim 1, is characterized in that, described initial time is the moment that battery management system is started working.
3. new energy vehicle data record method according to claim 1, is characterized in that, described predetermined threshold value △ V requires to set according to Practical Project.
4. new energy vehicle data record method according to claim 1, is characterized in that, basis in described step S2 | V
2-V
1|>=△ V judges current battery level data; Wherein, V
2for voltage data current to be judged, V
1for the voltage data of previous record.
5. new energy vehicle data record method according to claim 4, is characterized in that, basis in described step S3
calculate battery capacity increment peak-data; Wherein, P
2for V
2capacity increment peak-data, Q
2and Q
1be respectively V
2and V
1battery capacity data.
6. new energy vehicle data record method according to claim 1, is characterized in that, the battery voltage data with judgement in the method and capacity data are stored in the buffer area of battery management system; The data meeting Rule of judgment are stored in the persistent storage of battery management system.
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| CN201610027448.1A CN105548907B (en) | 2016-01-15 | 2016-01-15 | New energy vehicle data record method based on battery management system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107045104A (en) * | 2016-11-29 | 2017-08-15 | 北京交通大学 | A kind of On-line Estimation method of lithium titanate battery capacity |
| CN107589374A (en) * | 2016-07-06 | 2018-01-16 | 深圳市沃特玛电池有限公司 | Batteries of electric automobile inclusion quantity evaluation method |
| CN108248431A (en) * | 2018-01-23 | 2018-07-06 | 南京浦和数据有限公司 | A kind of battery charge data storage and extracting method |
| WO2019033391A1 (en) * | 2017-08-18 | 2019-02-21 | 罗伯特·博世有限公司 | Method, device and system for detecting battery pack consistency |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102466785A (en) * | 2010-11-09 | 2012-05-23 | 欣旺达电子股份有限公司 | Acquisition method and acquisition device for voltage difference values among single batteries of power battery pack |
| CN102636754A (en) * | 2011-02-11 | 2012-08-15 | 成功大学 | Battery residual capacity pre-estimating method and system |
| CN103616643A (en) * | 2013-11-15 | 2014-03-05 | 清华大学 | Data processing method for analyzing battery running conditions |
| US20150066406A1 (en) * | 2013-08-27 | 2015-03-05 | The Regents Of The University Of Michigan | On-board state of health monitoring of batteries using incremental capacity analysis |
-
2016
- 2016-01-15 CN CN201610027448.1A patent/CN105548907B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102466785A (en) * | 2010-11-09 | 2012-05-23 | 欣旺达电子股份有限公司 | Acquisition method and acquisition device for voltage difference values among single batteries of power battery pack |
| CN102636754A (en) * | 2011-02-11 | 2012-08-15 | 成功大学 | Battery residual capacity pre-estimating method and system |
| US20150066406A1 (en) * | 2013-08-27 | 2015-03-05 | The Regents Of The University Of Michigan | On-board state of health monitoring of batteries using incremental capacity analysis |
| CN103616643A (en) * | 2013-11-15 | 2014-03-05 | 清华大学 | Data processing method for analyzing battery running conditions |
Non-Patent Citations (1)
| Title |
|---|
| 马泽宇 等: "基于容量增量分析的石墨负极磷酸铁锂电池SOC估算方法研究", 《汽车工程》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107589374A (en) * | 2016-07-06 | 2018-01-16 | 深圳市沃特玛电池有限公司 | Batteries of electric automobile inclusion quantity evaluation method |
| CN107045104A (en) * | 2016-11-29 | 2017-08-15 | 北京交通大学 | A kind of On-line Estimation method of lithium titanate battery capacity |
| CN107045104B (en) * | 2016-11-29 | 2019-12-31 | 北京交通大学 | Online estimation method for capacity of lithium titanate battery |
| WO2019033391A1 (en) * | 2017-08-18 | 2019-02-21 | 罗伯特·博世有限公司 | Method, device and system for detecting battery pack consistency |
| CN108248431A (en) * | 2018-01-23 | 2018-07-06 | 南京浦和数据有限公司 | A kind of battery charge data storage and extracting method |
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| CN105548907B (en) | 2018-11-06 |
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