CN106785178A - Battery modules recycle detection, screening method for group matching and device - Google Patents

Battery modules recycle detection, screening method for group matching and device Download PDF

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Publication number
CN106785178A
CN106785178A CN201710158073.7A CN201710158073A CN106785178A CN 106785178 A CN106785178 A CN 106785178A CN 201710158073 A CN201710158073 A CN 201710158073A CN 106785178 A CN106785178 A CN 106785178A
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China
Prior art keywords
battery modules
voltage
cell
combo
battery
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CN201710158073.7A
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Chinese (zh)
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CN106785178B (en
Inventor
孙学武
曹智慧
殷明
任科臣
卢高庆
王卓琳
张勇
韩海伦
詹金果
Original Assignee
许继电源有限公司
许继电气股份有限公司
许继集团有限公司
国网江苏省电力公司经济技术研究院
国家电网公司
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Priority to CN201710158073.7A priority Critical patent/CN106785178B/en
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Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/54Reclaiming serviceable parts of waste accumulators
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07CPOSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00Sorting 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
    • B07C5/34Sorting according to other particular properties
    • B07C5/344Sorting according to other particular properties according to electric or electromagnetic properties
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07CPOSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00Sorting 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
    • B07C5/36Sorting apparatus characterised by the means used for distribution
    • B07C5/38Collecting or arranging articles in groups
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/385Arrangements for measuring battery or accumulator variables
    • G01R31/3865Arrangements for measuring battery or accumulator variables related to manufacture, e.g. testing after manufacture
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/04Construction or manufacture in general
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/4285Testing apparatus
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44Methods for charging or discharging
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/84Recycling of batteries or fuel cells

Abstract

Detection, screening method for group matching and device are recycled the present invention relates to battery modules, using battery modules as minimum screening unit, retired battery modules after by standing carry out charging-discharging performances test, obtain the maximum voltage and minimum voltage of cell, when the absolute value of maximum voltage and minimum voltage difference is less than the voltage difference threshold value for setting, judge that the retired battery modules are recycling, and internal resistance according to battery modules and capacity carry out combo.The present invention considers the uniformity of cell, retired power battery pack cell screening combo is not split into, but using battery modules as screening combo object, combo will be carried out with the good battery modules of cell uniformity by the open-circuit voltage for judging cell, the present invention not only enormously simplify echelon using the work difficulty with Battery pack, and screening combo power battery pack is with short production cycle, uniformity is higher, and low cost of manufacture.

Description

Battery modules recycle detection, screening method for group matching and device

Technical field

The invention belongs to electric automobile and new energy resource power battery technical field, and in particular to battery modules recycle inspection Survey, screen method for group matching and device.

Background technology

The conformity classification of lithium-ion-power cell is mainly in battery production assembling stage completion, to meet need in groups Ask, its relation technological researching is also concentrated mainly on this, and is also in starting using the recycling screening study of middle and later periods to battery Stage, application technology of the current driving force lithium ion battery on electric automobile reaches its maturity, global lithium ion battery market scale The growth of geometric progression was presented in several years.And be just no longer appropriate for when battery is less than original capacitance 80% in actually runing Used on electric automobile, but the rate of recovery of China's battery is but less than 2%, and a large amount of discarded batteries cause energy resource wave Take and environmental pollution.Then its value does not obtain maximum performance directly as refuse battery treatment to move back fortune battery, and material is particularly Positive electrode does not obtain most sufficiently utilization.Echelon using can well solve this problem, by echelon using can be with Electrokinetic cell performance is allowed to be fully played, can be with reduces cost.

Lithium-ion-power cell echelon utilize, refer to disassembled by the electrokinetic cell to automobile after, detect and It is sorted it is secondary use, after electrokinetic cell is eliminated, can be used in completely including new energy distributed power generation station, energy storage electricity Stand, strong point of taking precautions against natural calamities, street lamp and communication base station etc. be to the less demanding place of energy density.

The research for being utilized for lithium battery echelon used for electric vehicle now, all also in the starting stage, wherein also having a lot Technical problem needs to solve, such as the stepping and screening problem of the lithium battery used for electric vehicle for reclaiming.It is different from new battery, reclaim The uniformity of electrokinetic cell is poor, and the performance parameter of battery core differs greatly, and how to determine simple, suitable, reliability and possesses certain The separation condition of universality is battery secondary using one of problems faced first, and the sorting of battery needs to set up to reclaiming On the basis of electrokinetic cell performance is fully understanded.

At present, the recycling of the domestic existing retired electrokinetic cell of detection, screening grouping method mainly have three kinds:

The first is screened in groups according to battery capacity;

Second is screened in groups according to battery capacity, internal resistance, self discharge;

The third is screened in groups according to battery charging and discharging indicatrix;

The screening grouping method of above-mentioned three kinds of electrokinetic cells carries out screening groups of both for cell, for example, public Accuse number Chinese patent for being CN103785629 and propose a kind of echelon using lithium battery screening grouping method, the method is by right Cell carries out capacity, ohmic internal resistance, polarization resistance and self discharge test, carries out the screening of battery.The advantage of the method is Ensure that the necrosis influence battery echelon without Individual cells, using performance in groups, has the disadvantage for the luxuriant test of cell, sieve Choosing, inefficiency, the waste and old retired electrokinetic cell of inapplicable China is various, battery modules enormous amount situation, if right Each cell is tested, screened, and in groups, its workload is huge, and the method does not account for monomer finally The problem of battery consistency, in the case of cell uniformity is preferable, is screened not respectively to each cell Only inefficiency, the waste of the human and material resources that will also result in, or even the effect got half the result with twice the effort can be also played to a certain extent Really.

The content of the invention

Detection, screening method for group matching and device are recycled it is an object of the invention to provide battery modules, it is existing for solving Technology carries out recycling detection and the low problem of combo efficiency for cell.

In order to solve the above technical problems, the present invention proposes that a kind of battery modules recycle detection method, comprise the following steps:

Each retired battery modules are carried out with charging-discharging performances test, cell in the retired battery modules is obtained Maximum voltage and minimum voltage, when the voltage difference threshold value of the absolute value less than setting of the maximum voltage and minimum voltage difference When, judge that the retired battery modules are recycling.

Further, before carrying out charging-discharging performances test, also including retired battery modules are stood at a temperature of set environment The step of setting time t.

In order to solve the above technical problems, the present invention also proposes that a kind of battery modules recycle detection means, including to place an order Unit:

For retired battery modules to be carried out with charging-discharging performances test, cell in the retired battery modules is obtained Maximum voltage and minimum voltage, when the voltage difference threshold value of the absolute value less than setting of the maximum voltage and minimum voltage difference When, judge that the retired battery modules are recycling.

In order to solve the above technical problems, the present invention also proposes a kind of battery modules screening method for group matching, including following combo Scheme:

Each retired battery modules are carried out charging-discharging performances test by combo scheme one, obtain single in each retired battery modules The maximum voltage and minimum voltage of body battery, electricity of the absolute value less than setting according to the maximum voltage and minimum voltage difference Threshold pressure differential is screened to each battery modules, and combo is carried out to battery modules according to internal resistance and capacity after screening.

Each battery modules on the basis of combo scheme one, combo are carried out according to following steps by combo scheme two:To survey The internal resistance of the battery modules for obtaining makees difference and asks for absolute value with the reference resistance of setting, compares whether the absolute value sets at one In the range of fixed resistance gradient, the battery modules that will meet the absolute value in a resistance gradient scope for setting are divided into one Class, carries out the combo of module.

Combo scheme three, on the basis of combo scheme one, obtains in each battery modules according to charging-discharging performances test Resistance and capacity data.

Combo scheme four, includes on the basis of combo scheme three, the step of the charging-discharging performances are tested:To each electricity Pond module carries out constant-current charge, when the voltage of any cell in battery modules rises to the first voltage of setting, measurement The internal resistance of the battery modules;Constant-current discharge is carried out to the battery modules again, when any cell in the battery modules Voltage when dropping to the second voltage of setting, calculate the capacity of the battery modules.

Combo scheme five, on the basis of combo scheme one, when the maximum voltage and the absolute value of minimum voltage difference During greater than, equal to the voltage difference threshold value for setting, each battery modules are split into cell, according to internal resistance and capacity to monomer electricity Pond carries out combo.

Combo scheme six, on the basis of combo scheme two, is left unnecessary electricity after combo in having a class battery modules During the module of pond, unnecessary battery modules are divided into the classification of other resistance gradient scopes carries out combo.

Combo scheme seven, on the basis of combo scheme one, also including being filled to carrying out constant current after the completion of battery modules combo Electricity and/or the balanced step for mending electricity.

Combo scheme eight, on the basis of combo scheme one, before carrying out charging-discharging performances test, also including by retired electricity Pond module is the step of setting time t is stood at a temperature of set environment.

The beneficial effects of the invention are as follows:The present invention exists retired battery modules using battery modules as minimum screening unit Setting time t is stood at a temperature of set environment, after standing retired battery modules are carried out with charging-discharging performances test, obtain monomer The maximum voltage and minimum voltage of battery, when the voltage difference threshold value of the absolute value less than setting of maximum voltage and minimum voltage difference When, judge that the retired battery modules are recycling, and internal resistance according to battery modules and capacity carry out combo.The present invention considers The uniformity of cell, does not split into cell screening combo, but battery modules are made by retired power battery pack To screen the object of combo, will be entered with the good battery modules of cell uniformity by the open-circuit voltage for judging cell Row combo, the present invention not only enormously simplify echelon using the work difficulty with Battery pack, and screen the power battery pack of combo With short production cycle, uniformity is higher, and low cost of manufacture.

Brief description of the drawings

Fig. 1 is retired electrokinetic cell modular arrangements schematic diagram;

Fig. 2 is the monomer series-connected schematic diagram in battery modules inside;

Fig. 3 is battery modules screening process figure;

Fig. 4 is cell equalizaing charge schematic diagram.

Specific embodiment

Specific embodiment of the invention is further described below in conjunction with the accompanying drawings.

A kind of battery modules of the invention screen the embodiment of method for group matching:

The module that the present invention is mentioned refers to the baby battery bag using the encapsulation of plastic-aluminum shell in retired power battery pack, single in module The type of attachment of body battery is the mode that series, parallel or connection in series-parallel are combined, a kind of cell connection in series-parallel as shown in Figure 2 With reference to module, the module constitutes baby battery bag by 4 battery cells in series, and the battery unit of each 300Ah includes 6 simultaneously Joint group into 50Ah cell.

The battery modules that two or more cell is constituted draw battery modules as minimum screening unit by test Capacity, internal resistance, and battery modules are screened according to capacity, internal resistance.Battery modules to meeting condition carry out open circuit electricity Pressure detection, when cell is maximum, minimum open circuit voltage difference absolute value is less than the first voltage of setting in battery modules, presses Internal resistance and capacity according to battery modules carry out combo;When cell is maximum, minimum open circuit voltage difference absolute in battery modules Value more than setting first voltage when, carry out capacity, inner walkway respectively to the cell of battery modules, and according to capacity, Internal resistance is screened to cell, combo.

Specifically, first carry out outward appearance screening, eliminate those and there is leakage, greasy dirt, swell, deformation, and pole fracture, The battery modules (calling module in the following text) of burn into stripped thread, and battery deformation of cylindrical degree is recorded, according to the battery designed after combo again Case size determines maximum acceptable deformation extent, it is assumed that X-direction assembles N number of module in battery case, between each module is reserved Gap is r (cm), and the size in battery modules X-direction is p (cm), then battery modules are in the acceptable maximum distortion degree of X-direction It is p+r (cm).Y-direction assembles M module in battery case, and each module preset clearance is s (cm), in battery modules Y-direction Size is q (cm), then battery modules are s+q (cm) in the acceptable maximum distortion degree of X-direction.

Then, filler test is carried out to module, by taking 300AH lithium iron phosphate dynamic battery modules as an example, mainly including capacity And inner walkway, testing process is as shown in figure 3, detailed step is as follows:

Constant-current charge is carried out to module, is charged when any monomer voltage obtains to end when voltage rises to 3.65V, shelved 10min, module AC impedance is measured using battery Inner Resistance Tester in Virtual Instrument device;Then constant-current discharge is carried out to module again, when any Cut-off electric discharge, calculates module capacity when monomer voltage drops to 2.8V.

After module shelves 48h, open-circuit voltage detection (OCV detections) is carried out, cell in module is measured using digital table Open-circuit voltage, and record the maximum voltage V of cell in modulemax, minimum voltage Vmin, maximum voltage is calculated with minimum electricity The difference △ V of pressure, if △ V<Va, judging that the module meets module combo condition, module enters the combo stage:

The impedance data R1, R2, R3, R4, R5, R6, R7 ... of module will be measured, with setting reference impedance value RaPhase Subtract, obtain internal resistance difference △ R1, △ R2, △ R3, △ R4, △ R5, △ R6, the △ R7 ... of module, these data are counted into module Coded data table in, according to calculate internal resistance difference data the module in coded data table is entered according to five resistance gradient scopes Row classification, as shown in table 1;

Table 1

Classification Internal resistance is poor A △R<=5m Ω B 5mΩ<△R<=10m Ω C 10mΩ<△R<=15m Ω D 15mΩ<△R<=20m Ω E 20mΩ<△R

As shown in table 1, module is divided into five classes (A, B, C, D, E), the resistance gradient scope of A classes is △ R<=5m Ω, B classes Resistance gradient scope be 5m Ω<△R<The resistance gradient scope of=10m Ω, C classes is 10m Ω<△R<The electricity of=15m Ω, D classes Resistance gradient scope is 15m Ω<△R<The resistance gradient scope of=20m Ω, E classes is 20m Ω<△ R, by all modules in each class Measure capacity data to arrange from high to low, obtain following form:

Table 2

Module in each classification carries out combo successively from high to low by measure, and extra module is divided into next Classification carries out combo.

If △ V >=Va, then judge that the module does not meet module combo condition, there is the cell of poor-performing in module, Need for module to split into cell, the module is picked out carries out monomer Selection combo:

Cell constant current 0.5C is charged, stops charging when the cell rises to 3.65V, then to monomer electricity Pond carries out 3.65V constant-voltage charges, stops charging when electric current drops to 3A, and cell stands 10min, uses inner walkway Instrument, measures and records the AC impedance of cell.Then cell constant current 0.5C is discharged, 2.8V is dropped to voltage When stop electric discharge, and recording capacity repeats process that above-mentioned cell charges once, will according to the separation index shown in table 3 Monomer is classified, the preferential combo of monomer of same rank, by every four monomer series-connected composition modules of same rank, and foundation The capacity that measures, internal resistance data enter module combo.

Table 3

Power battery pack is constituted with the module for a group, is connected between the module in power battery pack, carry out whole group charging, Using following multi-stage constant current method:

100A constant-current charges are carried out, when any monomer battery voltage is to 3.50V in power battery pack, to power battery pack 50A constant-current charges are carried out, when any monomer battery voltage is to 3.55V, 20A constant-current charges is carried out to power battery pack, it is any single Body cell voltage terminates to charging process during 3.65V.

The balanced of power battery pack mends electricity strategy as shown in figure 4, when carrying out equalized maintenance, using with active equalization function Balancing equipment the monomer in power battery pack is carried out it is balanced mend electricity, set blanking voltage as 3.65V, charging current is 20A, After equilibrium is opened, each balance module UnIn control unit be responsible for the corresponding cell B of Real-time CollectionnTwo ends Voltage, after the completion of collection, whether the monomer battery voltage that collects of judgement more than or equal to 3.65V;If greater than being equal to 3.65V, then show that this cell need not carry out equalization operation, and corresponding balance module does not work;If cell Bn Voltage is less than 3.65V, and corresponding balance module output relay is closed, and the DC/DC modules in correspondence balance module will be with setting Current value 20A carries out constant-current charge to cell.After the completion of equilibrium, corresponding balance module is complete by equilibrium by CAN Host computer is given on into information, after the completion of all cell all equilibriums, balance module output relay disconnects, and accordingly refers to Show that lamp is bright, indicate balanced completion, operating personnel carry out the equilibrium of next Battery pack.

Above-mentioned battery modules are the screening method for group matching with internal resistance, capacity as index, for further optimal screening effect, Self discharge index can be added to be screened, echelon is used using self-discharge of battery method of testing《Carp ion used for electric vehicle stores Battery testing specification》(QC/T7 43-2006 standards), it is desirable to which the normal temperature spray charging precipitator that test finally gives should be not less than specified The 80% of value.Rejecting is unsatisfactory for the battery modules of above-mentioned requirements.

V in the present embodimentaIt is to judge that the value is preceding with the presence or absence of a voltage reference value for damaging monomer in module Phase tests the sampling verification of a number of retired power battery pack and obtains.RaModule is carried out the one of stepping by AC impedance Individual resistive reference value, the value is the sampling verification of a number of retired power battery pack to be tested in early stage obtain.

The present invention influences larger factor for echelon using battery applications place, considers the screening cycle, screens into This, does not split into monomer, but screened as minimum using the battery modules of n cell composition by retired power battery pack Unit, using battery AC internal Resistance and maximum available as battery screening index.

In the present embodiment, automobile-used retired power battery pack is as follows with the Connection Step of test platform:It is quiet at ambient temperature 1h is put, then the power line part and data gathering line part of battery pack are reliably connected with test platform;Pre- place is carried out to battery Reason, then tests FCL battery capacity, the capacity of cell, internal resistance, self discharge, tests battery and survey after terminating Examination platform is disconnected.

Echelon of the invention screens method for group matching using electrokinetic cell, and the screening process of retired electrokinetic cell includes:According to The capacity of battery modules and internal resistance carry out graduation screening, weed out the battery modules for being unsatisfactory for use condition internal resistance value, finally Weed out the battery modules for being unsatisfactory for national self discharge standard;The new electrokinetic cell of graduation composition is carried out according to battery capacity value Group, completes the assembling of energy-storage system.Screened and reapplied using lithium-ion-power cell for extensive echelon, and batch Preparation can be used for the power battery pack of energy-accumulating power station.The lithium-ion-power cell group obtained using this method sorting can be using big rule Mould energy-accumulating power station, can obtain uniformity lithium-ion-power cell group higher.

The present invention is screened according to capacity, inner walkway using battery modules as minimum screening unit to battery modules, Open-circuit voltage detection is carried out to the battery modules that pass through of screening, compares cell in first voltage and battery modules maximum, most The size of the absolute value of small difference in open circuit voltage, when the absolute value is less than first voltage, internal resistance and capacity according to battery modules Carry out combo;When the absolute value is more than first voltage, then carries out capacity, internal resistance respectively to the cell of battery modules and survey Examination, is finally screened, combo to cell.The uniformity of the cell that the method considers, not by retired power electric Pond assembling and dismantling are divided into cell screening combo, but using battery modules as the object for screening combo, by judging open-circuit voltage Combo will be carried out with the good battery modules of cell uniformity first, the battery modules bad for cell uniformity Split, screening combo is carried out to the cell after fractionation, the method for the present invention not only simplify echelon using combo electricity The work difficulty in pond, and screening combo power battery pack is with short production cycle, uniformity is higher, and low cost of manufacture.

Battery modules proposed by the present invention screening method for group matching is to detect and carrying out after judging that battery modules are recycling Screening method for group matching, battery modules are followed the steps below detect and judge it is recycling after, that is, carry out above-mentioned implementation The screening method for group matching of example, and internal resistance according to battery modules and capacity carry out combo, and battery modules of the present invention are recycled and examined Survey method including the step of be:

Each retired battery modules are carried out with charging-discharging performances test, the maximum of cell in retired battery modules is obtained Voltage and minimum voltage, when the absolute value of maximum voltage and minimum voltage difference is less than the voltage difference threshold value for setting, judge to move back Labour battery modules are recycling.

Battery modules of the invention recycle detection method judging that a part of retired battery modules are recycling and carry out After the combo of battery modules, another part cell maximum voltage and minimum voltage are more than the battery mould of voltage difference threshold value Group, that is, not meeting the battery modules of module combo condition carries out the fractionation of cell, and according to prior art to the list that splits Body battery is screened, combo.

The screening method for group matching of relatively above-mentioned battery modules, the invention allows for a kind of screening of battery modules with assembling Put, including with lower unit:

For each retired battery modules to be carried out with charging-discharging performances test, cell in each retired battery modules is obtained Maximum voltage and minimum voltage, voltage difference threshold value pair of the absolute value less than setting according to maximum voltage and minimum voltage difference Each battery modules are screened, and combo is carried out to battery modules according to internal resistance and capacity after screening.

Equally, relative to the recycling detection method of above-mentioned battery modules, the invention allows for a kind of battery modules again Using detection means, including with lower unit:

For retired battery modules to be carried out with charging-discharging performances test, cell in the retired battery modules is obtained Maximum voltage and minimum voltage, when maximum voltage and minimum voltage difference absolute value less than setting voltage difference threshold value when, Judge that the retired battery modules are recycling.

Above-mentioned signified battery modules screening combo device, and battery modules recycle detection means, are actually based on A kind of computer solution of the inventive method flow, i.e., a kind of software architecture, in may apply to computer, said apparatus Treatment progress as corresponding with method flow.Because the sufficiently clear of the introduction to the above method is complete, and this implementation The device that example is claimed is actually a kind of software architecture, therefore is no longer described in detail.

Claims (10)

1. a kind of battery modules recycle detection method, it is characterised in that comprise the following steps:
Each retired battery modules are carried out with charging-discharging performances test, the maximum of cell in the retired battery modules is obtained Voltage and minimum voltage, when the absolute value of the maximum voltage and minimum voltage difference is less than the voltage difference threshold value for setting, sentence The fixed retired battery modules are recycling.
2. battery modules according to claim 1 recycle detection method, it is characterised in that carry out charging-discharging performances survey Before examination, also including by retired battery modules at a temperature of set environment stand setting time t the step of.
3. a kind of battery modules screen method for group matching, it is characterised in that comprise the following steps:
Each retired battery modules are carried out with charging-discharging performances test, the maximum electricity of cell in each retired battery modules is obtained Pressure and minimum voltage, voltage difference threshold value of the absolute value less than setting according to the maximum voltage and minimum voltage difference is to each electricity Pond module is screened, and combo is carried out to battery modules according to internal resistance and capacity after screening.
4. battery modules according to claim 3 screen method for group matching, it is characterised in that according to following steps to each battery Module carries out combo:The internal resistance of the battery modules that will be measured makees difference and asks for absolute value with the reference resistance of setting, relatively more described Whether absolute value will meet the absolute value in a resistance gradient scope for setting in the range of a resistance gradient for setting Battery modules be divided into a class, carry out the combo of module.
5. battery modules according to claim 3 screen method for group matching, it is characterised in that tested according to charging-discharging performances Obtain internal resistance and the capacity data of each battery modules.
6. battery modules according to claim 5 screen method for group matching, it is characterised in that the charging-discharging performances test The step of include:Constant-current charge is carried out to each battery modules, when the voltage of any cell in battery modules rises to setting First voltage when, measure the internal resistance of the battery modules;Constant-current discharge is carried out to the battery modules again, when the battery mould When the voltage of any cell drops to the second voltage of setting in group, the capacity of the battery modules is calculated.
7. battery modules according to claim 3 screen method for group matching, it is characterised in that when the maximum voltage and minimum When the absolute value of voltage difference is greater than, equal to the voltage difference threshold value for setting, each battery modules are split into cell, according to interior Resistance and capacity carry out combo to cell.
8. battery modules according to claim 4 screen method for group matching, it is characterised in that match somebody with somebody in having a class battery modules When being left unnecessary battery modules after group, unnecessary battery modules are divided into the classification of other resistance gradient scopes and are matched somebody with somebody Group.
9. battery modules according to claim 3 screen method for group matching, it is characterised in that also including to battery modules combo After the completion of carry out constant-current charge and/or the balanced step for mending electricity.
10. a kind of battery modules recycle detection means, it is characterised in that including with lower unit:
For retired battery modules to be carried out with charging-discharging performances test, cell is obtained in the retired battery modules most Big voltage and the data such as minimum voltage and capacity, internal resistance, when the maximum voltage is less than with the absolute value of minimum voltage difference During the voltage difference threshold value of setting, judge that the retired battery modules are recycling.
CN201710158073.7A 2017-03-16 2017-03-16 Battery module reuse detection, screening and matching method and device CN106785178B (en)

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CN107645022A (en) * 2017-08-21 2018-01-30 中航锂电(洛阳)有限公司 A kind of method for separating of retired battery
CN109425837A (en) * 2017-09-04 2019-03-05 北京迅力世达技术有限公司 The rapid screening method of retired battery modules
CN109428131A (en) * 2017-09-04 2019-03-05 北京迅力世达技术有限公司 Maintaining method suitable for lithium ion battery energy storage system
CN107732337A (en) * 2017-10-18 2018-02-23 中航锂电(洛阳)有限公司 A kind of retired battery module method for separating
CN107732337B (en) * 2017-10-18 2020-12-29 中航锂电(洛阳)有限公司 Sorting method for retired battery modules
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CN108199109A (en) * 2018-01-16 2018-06-22 上海应用技术大学 The screening technique that a kind of retired power battery pack echelon utilizes
CN108550893A (en) * 2018-05-09 2018-09-18 江苏海四达电源股份有限公司 Method for group matching for ferric phosphate lithium cell
CN109031130A (en) * 2018-05-31 2018-12-18 轻客智能科技(江苏)有限公司 A kind of electricity calibration method and device
CN108889640A (en) * 2018-06-26 2018-11-27 合肥国轩高科动力能源有限公司 A kind of flexibility battery production stands the standing method of system
CN109037812A (en) * 2018-08-02 2018-12-18 清华四川能源互联网研究院 Surplus energy utility method and device
CN109365325A (en) * 2018-09-17 2019-02-22 深圳市华格安瑞技术咨询有限公司 A kind of manufacturing method and system of battery
CN109471040A (en) * 2018-10-16 2019-03-15 深圳市普兰德储能技术有限公司 Capacity determination method, device, electronic equipment and computer readable storage medium
CN109669143B (en) * 2019-01-30 2021-01-29 中航锂电(洛阳)有限公司 Battery pack capacity evaluation method
CN109669143A (en) * 2019-01-30 2019-04-23 中航锂电(洛阳)有限公司 A kind of battery capacity evaluating method
CN109856540B (en) * 2019-02-14 2021-01-26 江苏慧智能源工程技术创新研究院有限公司 Recycling method and grading method of retired battery packs
CN109856540A (en) * 2019-02-14 2019-06-07 江苏慧智能源工程技术创新研究院有限公司 A kind of recoverying and utilizing method and stage division of retired battery pack
CN110224192A (en) * 2019-05-30 2019-09-10 安徽巡鹰新能源科技有限公司 A kind of echelon utilizes power battery life-span prediction method
CN110336051B (en) * 2019-06-05 2020-12-29 武汉理工大学 Grading method for gradient utilization of waste solid oxide fuel cells
CN110336051A (en) * 2019-06-05 2019-10-15 武汉理工大学 The stage division that waste and old solid oxide fuel cell echelon utilizes
CN110504501A (en) * 2019-08-19 2019-11-26 国网河北省电力有限公司石家庄供电分公司 Retired battery Gradient utilization method and system

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