A kind of power battery charging method based on big data statistics
Technical field
The present invention relates to new-energy automobile field, in particular to a kind of power battery charging side based on big data statistics
Method.
Background technique
Vehicular dynamic battery charge control at present mainly uses single charge control method.And this method does not adapt to
Different application scene, and be applicable in also and non-fully for different operating conditions.Such as fixed its charging of operation client and traveling road
Line is fixed, and has the good charging time, and on-fixed operation client has charging rate within a certain period of time and needs faster
It asks.
Design method relatively good at present can provide different software versions for different operation scenes, this mode increases
Complicated version management and matching and calibration work.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide one kind to be based on existing battery management system, leads to
It crosses in battery complete lifecycle, the power battery charging side of statistics application is carried out in power battery practical application charging process
Method.
The purpose of the present invention is achieved through the following technical solutions: it is a kind of based on big data statistics power battery fill
Method for electrically, this method include input signal processing, big data statistic algorithm, charge control parameter setting and charge control four steps
Suddenly;The charging ability of power battery is obtained through excessive data statistics algorithm after input signal processing, charge control is set later and is joined
Number carries out charge control.
It is preferred that input signal is handled: required for processing big data statistics and charge control parameter setting most
Polymeric monomer voltage and maximum temperature, battery charge ability parameter.
It is preferred that big data statistic algorithm includes: charging times and the charging time counted in certain time.It is excellent
Selection of land counts intraday charging times and charging time.
It is preferred that charge control parameter setting: charge cutoff monomer voltage is arranged in setting charge-current demands.
It is preferred that charge control includes: to charge in practical charging process according to charge-current demands, when monomer electricity
Pressure reaches cut-off monomer voltage and then stops charging.
It is preferred that input signal processing is comprising steps of calculate maximum monomer voltage MaxCellU;Calculate maximum electricity
Pond temperature MatT;It tables look-up to obtain power battery charging ability ChrgI by temperature;
Big data statistic algorithm is comprising steps of record daily charging times ChrgN;Record daily charging time ChrgT
(h);Be input in big data algorithm by ChrgN and ChrgT, obtain big data count daily charging times trend parameter A and
Big data counts daily charging time trend parameter B;
Charge control parameter setting method comprising steps of if parameter A > A (t-1) and parameter B > B (t-1) is set up simultaneously,
Then illustrate that trend increases when the daily demand charging times of the user and charging, then (preferably, a takes phase ReqChrgI=ChrgI*a
1.2), increase charging demand current ReqChrgI;Otherwise judge A < A (t-1) and parameter B < B (t-1) while setting up, then explanation should
The daily demand charging times of user and charging time trend are reduced, then (preferably, 0.8) b takes ReqChrgI=ChrgI*b, subtracts
Small charging demand current ReqChrgI;If the Rule of judgment of front two is not satisfied, ReqChrgI=ChrgI, charging is needed
Electric current ReqChrgI is asked to charge according to power battery ability;
Charge control method is comprising steps of be more than or equal to charging if voltage if maximum monomer voltage MaxCellU
Stop charging, otherwise charges normal.
It is preferred that the table that temperature is tabled look-up is determined by power battery characteristic.
It is preferred that big number is calculated according to daily charging times ChrgN and daily charging time ChrgT (h)
Daily charging times trend parameter A and big data, which count daily charging time trend parameter B, according to statistics is counted on cloud backstage
It calculates.
The beneficial effects of the present invention are: the present invention is to pass through the complete Life Cycle of battery based on existing battery management system
In phase, statistics application is carried out in power battery practical application charging process, one avoids the charging of different application scene not
Together, secondly avoiding caused inconsistent application under different application scene.
Detailed description of the invention
Fig. 1 is control method block schematic illustration in the present invention;
Fig. 2 is input signal processing schematic in the present invention;
Fig. 3 is big data statistic algorithm schematic diagram in the present invention;
Fig. 4 is charge control parameter setting schematic diagram in the present invention;
Fig. 5 is charge control schematic diagram in the present invention.
Specific embodiment
Technical solution of the present invention is described in further detail with reference to the accompanying drawing, but protection scope of the present invention is not limited to
It is as described below.
As shown in fig. 1~fig. 5, a kind of power battery charging method based on big data statistics, this method include input letter
Number processing, big data statistic algorithm, charge control parameter setting and four steps of charge control;Through excessive after input signal processing
Data statistics algorithm obtains the charging ability of power battery, and charge control parameter is arranged later, carries out charge control.
It is preferred that input signal is handled: required for processing big data statistics and charge control parameter setting most
Polymeric monomer voltage and maximum temperature, battery charge ability parameter.
It is preferred that big data statistic algorithm includes: charging times and the charging time counted in certain time.It is excellent
Selection of land counts intraday charging times and charging time.
It is preferred that charge control parameter setting: charge cutoff monomer voltage is arranged in setting charge-current demands.
It is preferred that charge control includes: to charge in practical charging process according to charge-current demands, when monomer electricity
Pressure reaches cut-off monomer voltage and then stops charging.
It is preferred that input signal processing is comprising steps of calculate maximum monomer voltage MaxCellU;Calculate maximum electricity
Pond temperature MatT;It tables look-up to obtain power battery charging ability ChrgI by temperature;
Big data statistic algorithm is comprising steps of record daily charging times ChrgN;Record daily charging time ChrgT
(h);Be input in big data algorithm by ChrgN and ChrgT, obtain big data count daily charging times trend parameter A and
Big data counts daily charging time trend parameter B, and big data algorithm includes recurrence/cluster/decision tree etc.;
Charge control parameter setting method comprising steps of if parameter A > A (t-1) and parameter B > B (t-1) is set up simultaneously,
Then illustrate that trend increases when the daily demand charging times of the user and charging, then (preferably, a takes phase ReqChrgI=ChrgI*a
1.2), increase charging demand current ReqChrgI;Otherwise judge A < A (t-1) and parameter B < B (t-1) while setting up, then explanation should
The daily demand charging times of user and charging time trend are reduced, then (preferably, 0.8) b takes ReqChrgI=ChrgI*b, subtracts
Small charging demand current ReqChrgI;If the Rule of judgment of front two is not satisfied, ReqChrgI=ChrgI, charging is needed
Electric current ReqChrgI is asked to charge according to power battery ability;
Charge control method is comprising steps of if maximum monomer voltage MaxCellU is more than or equal to charging by voltage
(different battery chargings then stop charging by voltage by voltage difference, such as ternary lithium ion battery for 4.2V), otherwise just
Often charging.
It is preferred that the table that temperature is tabled look-up is determined by power battery characteristic, different temperatures battery allows electric current different:
Such as 20 DEG C to 40 DEG C are 1C, it is 0 that 0 DEG C, which is 0,65 DEG C,.
It is preferred that big number is calculated according to daily charging times ChrgN and daily charging time ChrgT (h)
Daily charging times trend parameter A and big data, which count daily charging time trend parameter B, according to statistics is counted on cloud backstage
It calculates.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, it is noted that all
Made any modifications, equivalent replacements, and improvements etc. within the spirit and principles in the present invention should be included in guarantor of the invention
Within the scope of shield.