CN106623008B - Battery core intelligently predicts method for separating - Google Patents

Battery core intelligently predicts method for separating Download PDF

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Publication number
CN106623008B
CN106623008B CN201611012303.0A CN201611012303A CN106623008B CN 106623008 B CN106623008 B CN 106623008B CN 201611012303 A CN201611012303 A CN 201611012303A CN 106623008 B CN106623008 B CN 106623008B
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wheel
group
economize
voltage
core
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CN106623008A (en
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王乾
朱景国
季伟源
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Suzhou Sol Zhixing New Energy Technology Co ltd
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Jiangsu Soul New Energy Technology Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/34—Sorting according to other particular properties
    • B07C5/344—Sorting according to other particular properties according to electric or electromagnetic properties

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Abstract

This application discloses a kind of battery core intelligence precognition method for separating, comprising: sorting Y wheel, every wheel sorting X economize on electricity core；1st wheel once takes a section to amount to X economize on electricity core, is arranged successively into 1~X group, is calculated according to maximum voltage value and minimum amount of voltage that in X economize on electricity core referring to step values；2~Y wheel, takes an economize on electricity core every time, calculates the corresponding group of the battery core with referring to step values according to its voltage value, and after the completion of Y wheel sorting, each group total voltage is balanced.The balanced grouping of battery core can be realized in the voltage value that the present invention does not need to get all battery cores in advance, and portfolio effect is very good.

Description

Battery core intelligently predicts method for separating
Technical field
This application involves technical field of lithium-ion battery, intelligently predict method for separating more particularly to a kind of battery core.
Background technique
Lithium ion battery as a kind of novel energy-storing equipment, because of it with high-energy-density, high-specific-power, operating voltage it is high, The advantages that self discharge is low, preferable cycle performance and manufacturing environment are friendly, is increasingly valued by people.At present lithium from In sub- battery production industry, the charge-discharge performance of generally existing monomer lithium ion battery, cycle life and its security performance are all full Sufficient industry, country and international Technical specifications, still, once multiple single batteries are combined (such as according to certain way Series connection) it uses, because each single battery is due to the consistent sex differernce of manufacturing process, lead to its technical parameter (voltage, capacity, internal resistance Deng) mismatch, the ohmic polarization impedance of inside battery is further caused, and participate in the difference of the transfer impedance of cell reaction material It is different, if difference is too big, necessarily lead in battery pack work, the distribution of each single battery real-time voltage is uneven, cause overcharge or Overdischarge, thus battery pack service performance deteriorate, if capacity decline, cycle life sharp-decay, What is more will affect lithium from The problems such as safe handling of sub- battery.
Summary of the invention
The purpose of the present invention is to provide a kind of battery cores intelligently to predict method for separating, to overcome deficiency in the prior art.
To achieve the above object, the invention provides the following technical scheme:
The embodiment of the present application discloses a kind of battery core intelligence precognition method for separating, comprising:
Sort Y wheel, every wheel sorting X economize on electricity core；
1st wheel once takes a section to amount to X economize on electricity core, is arranged successively into 1~X group, according to maximum voltage in X economize on electricity core Value and minimum amount of voltage that are calculated referring to step values；
2~Y wheel, takes an economize on electricity core every time, calculates corresponding group of the battery core with referring to step values according to its voltage value Not, and after the completion of meeting wheel sorting, each group total voltage is balanced.
Preferably, in above-mentioned battery core intelligently precognition method for separating, definition sorting X, Y matrix, wherein X is group, Y To take turns number, wherein xth group total voltage Sx, the value of x is 1~X, voltage range Umin~Umax, include: in the 1st wheel method for separating
Section 1 battery core voltage U1, it is put into group 1, remembers S1=U1, Umin=Umax=U1；
Xth economize on electricity core voltage Ux, x >=2 are put into group x, remember Sx=UxIf Ux< Umin, remember Umin=UxIf Ux> Umax, remember Umax=Ux；
X is economized on electricity after core sorting, is calculated referring to step values: Vstep=(Umax-Umin)/X。
Preferably, in above-mentioned battery core intelligently precognition method for separating, after the 1st wheel X economize on electricity core sorting, according to total voltage S1~SXIt sorts from small to large, and group sequence corresponding after sequence is put into XlistIn, XlistIncluding subscript XIndex=1~ Xlistcount, group g1~gX, 1~XlistcountAnd g1~gXIt respectively corresponds.
Preferably, in above-mentioned battery core intelligently precognition method for separating, y wheel xth economize on electricity core method for separating includes:
Y wheel xth economize on electricity core voltage value is denoted as Uyx, wherein the value of y is 2~Y, and the value of x is 1~X, s1, according to voltage UyxObtain corresponding subscript XIndex:
1. if Uyx≤Umin, Umin=Uyx, corresponding XlistSubscript: XIndex=Xlistcount；
2. if Uyx≥Umax, Umax=Uyx, corresponding XlistSubscript: XIndex=1；
3. if Umin< Uyx< Umax, corresponding XlistSubscript: XIndex=(Uyx-Umin)/Vstep+ 1, it then calculates exceeded Value Vover=(Uyx-Umin) %VstepIf Vover> Vstep/ 2, and XIndex< Xlistcount, then X is corresponded toIndex=XIndex+1。
S2, to XIndexCarry out symmetry transformation: XIndex=Xlistcount+1-XIndex；
S3, from XlistIt is middle according to subscript XIndexObtain corresponding group gx, the group being divided into is needed for the battery core, and calculate Group gxTotal voltage: Sgx=Sgx+Uyx；
S4, from XlistIn pipette the group, recalculate XlistNumber of elements XlistcountAnd from 1 to XlistcountAgain Subscript is distributed, V is recalculatedstep=(Umax-Umin)/Xlistcount；
After the completion of the X economize on electricity core sorting of s5, y wheel, recalculate referring to step values: Vstep=(Umax-Umin)/X；And According to total voltage S1~SXIt sorts from small to large, group sequence corresponding after sequence is then put into XlistIn,
After the completion of s6, Y take turns X economize on electricity core sorting, sorting terminates.
Compared with the prior art, the advantages of the present invention are as follows: the voltage that the present invention does not need to get all battery cores in advance The balanced grouping of battery core can be realized in value, and portfolio effect is very good.
Specific embodiment
A detailed description of the technical solution in the embodiment of the present invention is provided below, it is clear that described embodiment is only It is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
This case carries out intelligent packet to battery core during sorting, carries out intelligent packet, matrix X-axis using matrix model Direction is the battery core number (corresponding group number) of every wheel sorting, and Y direction is the wheel number (corresponding every group of battery core quantity) of sorting；First One is calculated after wheel sorting referring to ladder；Second wheel starts, after the voltage value for often getting a battery core, according to ginseng It is grouped according to ladder, then dynamic adjustment is recalculated according to the data in matrix referring to rank after taking turns referring to ladder, one Ladder.
Specifically, present embodiment discloses a kind of battery cores intelligently to predict method for separating, comprising:
Amount to sorting X wheel, every wheel sorting X economize on electricity core.
One, the 1st wheel sorting
It once takes a section to amount to X economize on electricity core, is arranged successively into 1~X group, according to maximum voltage value in X economize on electricity core and most Small voltage value is calculated referring to step values；
Definition sorting X, Y matrix, joins table 1, wherein X is group, and Y is wheel number, wherein xth (value of x can be 1~X) group Total voltage Sx, voltage range Umin~Umax, include: in the 1st wheel method for separating
Section 1 battery core voltage U1, it is put into group 1, remembers S1=U1, Umin=Umax=U1；
Xth (value of x can be 2~X) economize on electricity core voltage Ux, it is put into group x, remembers Sx=UxIf Ux< Umin, remember Umin =UxIf Ux> Umax, remember Umax=Ux；
X is economized on electricity after core sorting, is calculated referring to step values: Vstep=(Umax-Umin)/X, and according to total voltage S1~SXFrom It is small to be put into X to big sequence, and by group sequence corresponding after sequencelistIn, in conjunction with shown in table 2, XlistIncluding subscript XIndex=1 ~Xlistcount, group g1~gX, 1~XlistcountAnd g1~gXIt respectively corresponds.
Table 1 sorts X, Y matrix
Table 2X axis group list
Subscript Xlist 1 2 3 … Xlistcount
Group g1 g2 g3 … gX
Two, y takes turns xth economize on electricity core sorting y wheel xth economize on electricity core voltage value and is denoted as Uyx, wherein the value of y is 2~Y, x's Value is 1~X,
S1, according to voltage UyxObtain corresponding subscript XIndex:
1. if Uyx≤Umin, Umin=Uyx, corresponding XlistSubscript: XIndex=Xlistcount；
2. if Uyx≥Umax, Umax=Uyx, corresponding XlistSubscript: XIndex=1；
3. if Umin< Uyx< Umax, corresponding XlistSubscript: XIndex=(Uyx-Umin)/Vstep+ 1, it then calculates exceeded Value Vover=(Uyx-Umin) %VstepIf Vover> Vstep/ 2, and XIndex< Xlistcount, then X is corresponded toIndex=XIndex+1。
S2, to XIndexCarry out symmetry transformation: XIndex=Xlistcount+1-XIndex；
S3, from XlistIt is middle according to subscript XIndexObtain corresponding group gx, the group being divided into is needed for the battery core, and calculate Group gxTotal voltage: Sgx=Sgx+Uyx；
S4, from XlistIn pipette the group, recalculate XlistNumber of elements XlistcountAnd from 1 to XlistcountAgain Subscript is distributed, V is recalculatedstep=(Umax-Umin)/Xlistcount；
After the completion of the X economize on electricity core sorting of s5, y wheel, recalculate referring to step values: Vstep=(Umax-Umin)/X；And According to total voltage S1~SXIt sorts from small to large, group sequence corresponding after sequence is then put into XlistIn；
After the completion of s6, Y take turns X economize on electricity core sorting, sorting terminates.
In conclusion the equilibrium point of battery core can be realized in the voltage value that the present invention does not need to get all battery cores in advance Group, portfolio effect are very good.
The above is only the specific embodiment of the application, it is noted that for the ordinary skill people of the art For member, under the premise of not departing from the application principle, several improvements and modifications can also be made, these improvements and modifications are also answered It is considered as the protection scope of the application.

Claims (2)

1. a kind of battery core intelligently predicts method for separating characterized by comprising
Sort Y wheel, every wheel sorting X economize on electricity core；
1st wheel, once take a section amount to X economize on electricity core, be arranged successively into 1~X group, according to X economize on electricity core in maximum voltage value and Minimum amount of voltage that is calculated referring to step values；
2~Y wheel, takes an economize on electricity core every time, calculates the corresponding group of the battery core with referring to step values according to its voltage value, when After the completion of Y wheel sorting, each group total voltage is balanced,
Definition sorting X, Y matrix, wherein X is group, and Y is wheel number, wherein xth group total voltage Sx, the value of x is 1~X, voltage model Enclose Umin~Umax, include: in the 1st wheel method for separating
Section 1 battery core voltage U1, it is put into group 1, remembers S1=U1, Umin=Umax=U1；
Xth economize on electricity core voltage Ux, x >=2 are put into group x, remember Sx=UxIf Ux< Umin, remember Umin=UxIf Ux> Umax, Remember Umax=Ux；
Xth is economized on electricity after core sorting, is calculated referring to step values: Vstep=(Umax-Umin)/X。
2. battery core according to claim 1 intelligently predicts method for separating, it is characterised in that: the 1st wheel X economize on electricity core sorting Afterwards, according to total voltage S1~SXIt sorts from small to large, and group sequence corresponding after sequence is put into XlistIn, XlistIncluding under Mark XIndex=1~Xlistcount, group g1~gX, 1~XlistcountAnd g1~gXIt respectively corresponds.
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CN103872395A (en) * 2014-03-27 2014-06-18 合肥国轩高科动力能源股份公司 Matching method for utilizing lithium ion power batteries in echelon manner
CN104409779A (en) * 2014-11-20 2015-03-11 合肥国轩高科动力能源股份公司 Pack matching method of lithium ion battery modules
CN105710050A (en) * 2016-03-11 2016-06-29 北京华特时代电动汽车技术有限公司 Battery monomer sorting method
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