CN110504500A - The waste and old power battery catalyst utilization method for environmental protection of new-energy automobile - Google Patents
The waste and old power battery catalyst utilization method for environmental protection of new-energy automobile Download PDFInfo
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4221—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells with battery type recognition
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/54—Reclaiming serviceable parts of waste accumulators
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/84—Recycling of batteries or fuel cells
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Abstract
The invention discloses a kind of waste and old power battery catalyst utilization method for environmental protection of new-energy automobile, include the following steps: S1, filter out waste and old power battery, wherein the waste and old power battery SOH filtered out is not less than 50%；S2, the waste and old power battery in step S1 is detected, the waste and old power battery for meeting examination criteria is recombinated and integrated, battery pack is obtained.It is preferable that the present invention recycles effect.
Description
Technical field
The present invention relates to power battery recycling and reusing fields, more particularly, to the waste and old power battery ring of new-energy automobile
Poly method.
Background technique
When the power battery capacity attenuation of electric car is to 80%, the applied code for meeting electric car will be unable to, in advance
Meter coming years power battery will enter a large amount of recovery stages.Although retired power battery is unable to satisfy it and leads in electric car
The performance requirement in domain, but still can play a role in energy storage field.Meanwhile the high cost of energy-storage battery also restricts China's battery
The popularization and application of energy storage industry, therefore, the retired waste and old power battery environmental protection of low cost, which is used in energy-storage system, to be had very
Important meaning.
Provide according to national standards, the capacity of new-energy automobile power battery drop to rated capacity 80% just mean
The termination in its service life, if the serious waste of resource will be caused by directly eliminating waste and old power battery.In fact, capacity declines
Reducing to 80% power battery still has preferable performance and longer service life, and it is not harsh to can satisfy some pairs of performance requirements
The use environments such as field, such as power grid energy storage, peak load shifting, low-speed electronic vehicle, field vehicle.Therefore, work as automobile power cell
When should not be continued to use on existing vehicle, environmentally friendly utilization can be carried out to it, give full play to the exploitation value of waste and old power battery
Value；In contrast, environmental protection, which is used in energy-storage system more, can play the maximum value of waste and old power battery, realize circular economy
Benefit, be more it is green and environmental protection way.
When the power battery capacity attenuation of electric car is to 80%, the applied code for meeting electric car will be unable to, in advance
Meter will enter a large amount of recovery stages in the coming years retired automobile power cell.Before and after the year two thousand twenty, China only pure electric automobile and
The power battery of hybrid vehicle adds up the scale that learies are up to 12~170,000 tons.
Power battery waste and old for automobile, environment will can be caused great harm by directly scrapping recovery processing, together
When, and to the huge waste of battery value, because although the waste and old power battery of automobile is unable to satisfy it in electric car application
The performance requirement in field, but still its effect can be played in other occasions.One most important purposes is exactly to be used for energy storage field,
For example it is used for renewable energy power generation, the peak load shifting of smart grid, microgrid, electric car electric charging station, family's backup power source
Equal fields.From the angle analysis of electric car, the cost of power battery almost occupies the one third of entire electric car cost
More than, therefore, if energy-storage system can be used in for automobile waste and old power battery environmental protection, also reduce to a certain extent electronic
The cost of automobile.
In conclusion electricity will be reduced to a certain extent if the waste and old power battery environmental protection of automobile is used in energy-storage system
The cost of pond energy-storage system, optimization energy storage configuration, for promoting battery energy storage that there is positive work in the development and application in China
With.Meanwhile environmentally friendly utilization is carried out to waste and old power battery, the capacity value of power battery can be given full play to, extends it and uses the longevity
Life promotes energy-saving and emission-reduction, is conducive to alleviate a large amount of batteries and enters recovery stage and give recovery operation bring pressure, and can be one
Determine the use cost for sharing electric car consumer in degree.The environmentally friendly utilization technology of waste and old power battery, it is electronic for pushing
The healthy Green Development of automobile industry, the popularization and application of energy-storage system and energy conservation and environmental protection have important social effect and huge
Big economic benefit.
Summary of the invention
The purpose of the present invention is to solve the above-mentioned problems, and it is waste and old dynamic to provide a kind of preferable new-energy automobile of effect
Power battery environmental protection utilizes method.
To achieve the goals above, the present invention adopts the following technical scheme: a kind of waste and old power battery ring of new-energy automobile
Poly method, includes the following steps:
S1, waste and old power battery is filtered out, wherein the waste and old power battery SOH filtered out is not less than 50%；
S2, the waste and old power battery in step S1 is detected, the waste and old power battery for meeting examination criteria is carried out
It recombinates and integrated, obtains battery pack.
Further, the method comprising the steps of S3, by battery pack obtained in step S2 using tandem type power conversion system
System carries out charge and discharge, and tandem type power conversion system includes:
First filter, one are terminated at alternating current；
AC/DC converter, one are terminated at the first filter other end；
Wiring comprising the first wiring and the second wiring, one end of wiring are connected to AC/DC converter, and described first connects
Capacitor is set between line and the second wiring；
Charge bus comprising the first charging bus and the second charging bus, the wiring is another to be terminated at charging mother
Line；
At least one charging module, the charging module include the DC/DC converter sequentially connected, second filter,
In, the DC/DC converter is connected to charging bus, and the second filter is for charging to battery pack.
Further, in step S2, each battery should be that same producer's production, structure is identical, chemical component is identical in battery pack
Product, and meet the following requirements:
A) difference of the static open-circuit voltage maxima and minima after battery pack is fully charged between each battery should be little
In 0.30V；
B) the end voltage difference after battery pack enters floating charge state for 24 hours between each battery should be not more than 0.30V；
C) when battery pack is completely filled with after electricity with 10h rate current discharge, the end voltage difference between each battery should be not more than
0.40V；
D) in battery pack between each battery the maximum value, minimum value of capacity and the difference of average value and average value ratio, answer
Meet claimed below:
I: ±≤2%；II :≤± 3%；III :≤± 4%.
E) internal resistance maximum value, the difference and average value of minimum value and average value between the fully charged rear each battery of battery pack
Ratio should be no more than ± 20%.
F) conductance maximum value, the difference and average value of minimum value and average value between the fully charged rear each battery of battery pack
Ratio should be no more than ± 20%.
Further, examination criteria includes following index:
1.1 charge-discharge power demand
It is charged as constant voltage and current limiting mode, the charging voltage of filling of battery is 3.55V~3.60V, the floating charge electricity of battery
Pressure is 3.40V~3.45V；
10h rate discharge current I10It indicates, numerical value 0.1C10, unit is ampere；
Charging current constant current value: 1.0I10、2.0I10、2.5I10、5.5I10、10I10、30I10It is optional；
Discharge current value: 1.0I10、2.0I10、2.5I10、5.5I10、10I10、30I10It is optional；
Final discharging voltage value: 2.60V~2.80V；
1.2 are completely filled with electricity
Judging that battery is completely filled with electricity can be by following three kinds of mode:
A) under conditions of 25 DEG C ± 2 DEG C of environment temperature, with the charging of defined electric current, when battery voltage reaches regulation
When filling charging voltage, be changed to constant-voltage charge, until charging current be less than or equal to 0.5I10A；
B) under conditions of 25 DEG C ± 2 DEG C of environment temperature, with the charging of defined electric current, when battery voltage reaches regulation
When filling charging voltage, be changed to constant-voltage charge, the charging time is not less than 16h；
C) under conditions of 25 DEG C ± 2 DEG C of environment temperature, with the charging of defined electric current, when battery voltage reaches regulation
When filling charging voltage, be changed to constant-voltage charge, until charging capacity be greater than rated capacity；
1.3 charge efficiency
After battery module or battery pack are fully charged, with 1.0I10When A current discharge is to final voltage 2.6V, recording capacity；
Again by defined voltage value requirement with 1.0I after electrostatic 1h10A current-limiting charge for 24 hours, records charging capacity, releases capacity and charging
Capacity ratio >=97%；
1.4 floating current
After battery module or battery pack are fully charged, then with float charge voltage charging for 24 hours after, charging under floating charge state electricity
Stream should be not more than 100mV；
1.5 cycle life
1.5.1 25 DEG C of 100%DOD, the cycle life of battery pack should be no less than 800 times；
A. under conditions of 25 DEG C ± 2 DEG C, battery provides 2.0I by test procedure10It (can be used less than or equal to 300Ah
5.5I10) it is fully charged after stand 0.5h~1h, then with 2.0I10(5.5I can be used less than or equal to 300Ah in A10) current discharge is extremely
Single battery final voltage 2.6V, this is a cycle life；
B. above step is repeated, until continuous 3 discharge capacities are less than the 70% of its rated value, then it is assumed that end-of-life,
Discharge cycles of the capacity less than 70% are not counted in cycle-index；
1.5.2 45 DEG C of 100%DOD, the cycle life of battery pack should be no less than 500 times；
A. under conditions of 45 DEG C ± 2 DEG C, battery provides 2.0I by test procedure10It (can be used less than or equal to 300Ah
5.5I10) it is fully charged after stand 0.5h~1h, then with 2.0I10(5.5 I can be used less than or equal to 300Ah in A10) current discharge is extremely
Single battery final voltage 2.6V, this is a cycle life；
B. above step is repeated, until continuous 3 discharge capacities are less than the 70% of its rated value, then it is assumed that end-of-life,
Discharge cycles of the capacity less than 70% are not counted in cycle-index；
1.6 security performance
1.6.1 additives for overcharge protection
Battery by test procedure regulation it is fully charged after, constant current constant voltage source voltage is set as 2 times of nominal voltages, with
1.0I10A electric current continues the 8h that charges to it, should not it is on fire, do not explode；
1.6.2 insulation resistance
It is positive and negative to tested battery with the test voltage of Insulation Resistance Tester direct current 500V for the battery of metal shell
Extreme son tests metal battery case, battery plus-negative plate interface respectively to the insulation resistance of battery pack metal shell not
Less than 2M Ω；Wherein, insulating requirements are not suitable for the battery pack of plastic shell and protection cap；
1.6.3 dielectric strength
For the battery of metal shell, with the direct current of pressure tester 50Hz, the alternating voltage of virtual value 500V or 710V
Voltage tests metal battery case tested battery plus-negative plate terminal, and battery plus-negative plate interface is respectively to battery pack gold
Belong to the DC voltage 1min of shell is able to bear 50Hz, virtual value is 500V alternating voltage (leakage current≤10mA) or 710V,
Should without breakdown, without arcing phenomena；
1.6.4 discharge performance
The battery that capacity test reaches rated value is completed by method as defined in test procedure, with 1.0I10Current discharge is extremely
0.1V is shorted for 24 hours, then with even charging voltage 3.6V current limliting 1.0I with 40 Ω resistance10A charge 48h, constitute a circulation, continuously into
After row five times circulations, with 1.0I10Current discharge answers no leakage, smolders, on fire or explosion to single battery final voltage 2.6V,
Its capacity should be not less than the 98% of rated value；
25 DEG C of electric discharges: battery is by the fully charged rear standing 0.5h~1h of regulation, under conditions of 25 DEG C ± 2 DEG C of environment temperature,
Respectively with 1.0I10A、2.5I10A、5.5I10A、10I10A、30I10A current discharge is put to single battery final voltage 2.6V
Capacitance should meet the requirements；
40 DEG C electric discharge: battery by test procedure provide it is fully charged after, put it into 40 DEG C ± 2 DEG C of high-temperature cabinet and stand
After for 24 hours, with 1.0I10A current discharge to single battery final voltage 2.6V, discharge capacity, appearance should meet the requirements；
60 DEG C electric discharge: battery by test procedure provide it is fully charged after, put it into 60 DEG C ± 2 DEG C of high-temperature cabinet and stand
After for 24 hours, with 1.0I10A current discharge to single battery final voltage 2.6V, discharge capacity, appearance should meet the requirements；
1.6.5 safe charge voltage
Battery is tested by test procedure, completes the battery that capacity test reaches rated value, completely after electric discharge, with
4.2V constant pressure, 1.0I10A current limliting is charged for 24 hours, and battery answers no leakage, smolders, on fire or explosion, and with 5.5I10A electric current
It is discharged to single battery final voltage 2.6V, no leakage is answered, smolders, on fire or explosion, capacity should be not less than rated value
100%.
Compared with prior art, the invention has the following beneficial effects:
(1) peak load shifting, save the electricity charge, improve power quality and system maintained to stablize: environmental protection is using the waste and old power of automobile
Battery energy storage system in distribution net side in use, when can be relieved peak load power grid power supply pressure, and by the high-incidence arbitrage of low storage,
Delay power distribution network capacity to extend, to improve the utilization rate of distribution net equipment, reduces grid net loss, improve grid power quality, from
And improve power distribution network safe running performance.
Environmental protection is using the waste and old power battery energy storage system of automobile in user side in use, building for user's power distribution station can be reduced
If capacity, to reduce the basic charge as per installed capacity of user, i.e. electrical capacity charge, in conjunction with time-of-use tariffs, the electricity electricity charge are saved for user.
Environmental protection is used using the waste and old power battery energy storage system of automobile in extensive generation of electricity by new energy side (including microgrid)
When, spare capacity needed for distributed power generation can be reduced, electricity is improved by the low high-incidence realization arbitrage of storage in conjunction with peak valley rate for incorporation into the power network
Energy quality, maintains system to stablize.
Environmental protection is using the waste and old power battery energy storage system of automobile in electric automobile charging station in use, can be high by low storage
It sends out, reduces charging station purchases strategies, power grid power supply pressure is alleviated in the impact of charging station Load on Electric Power Grid when reducing charging peak.
(2) reliable security performance: power battery selected by this project is mainly the waste and old power electric of new-energy automobile
Pond, safety reliability are adequately verified in terms of automobile application, solve asking for the safety of power battery substantially
Topic；My company by combine national standard and authority file (34015 Vehicular dynamic battery of GB/T recycle complementary energy detection,
31467.1 lithium ion power battery used for electromobile packet of GB/T and system part 1: high power applications test procedure, GB/T
31467.2 lithium ion power battery used for electromobile packets and system part 2: high energy application test procedure, GB/T
31467.3 lithium ion power battery used for electromobile packets and system third portion: security requirement and test method, GB/T
31485 Prospect of EVS Powered with Batteries safety requirements and test method, 31486 Prospect of EVS Powered with Batteries electrical property of GB/T
It is required that and test method) it formulates and meets a whole set of mature and stable testing mechanism that this project uses, by stringent detection,
Guarantee that performance indexes reaches the requirement of conformance testing specifications, security performance complies fully with the requirement of national standard.
(3) high-energy density: high-energy density, so-called energy density refer to that battery institute is releasable under unit mass
Energy, since energy density will be higher by much new-energy automobile power battery compared with other batteries, under same capacity
Compare between battery, quality shared by new-energy automobile power battery is much smaller.
(4) good cyclicity and long-life: the cycle life number of new-energy automobile power battery, according to dynamic at present
The technique and technology of power battery can achieve 2500~6000 times it is even more (such as: metatitanic acid lithium dynamical battery, 1. -55 DEG C of rings
3C rate charge-discharge cycle life is greater than 2500 times under border, and conservation rate >=80 initial capacities, 2. 3C charge and discharge follow under 25 DEG C of environment
The ring service life is greater than 10000 times, 80% initial capacity of capacity retention ratio >, 3. 3C rate charge-discharge cycle life under normal temperature environment
Greater than 8500 times, capacity retention ratio >=85% initial capacity), even if ceaselessly in the case where high current charge-discharge, life value
Also it is much higher than other batteries, that is, there is good cycle performance.
(5) monomer voltage rating is higher: higher voltage platform is a big feature of new-energy automobile power battery, i.e.,
Make latter stage of discharging, the voltage value of battery remains in higher level, and several sections of other batteries needs, which are cascaded, just may be used
Reach the voltage level of monomer new-energy automobile power battery, therefore it is very suitable as the energy of electric car.
(6) high power endurance: new-energy automobile power battery can bear rushing for larger current in the process of work
It hits, the power requirement of load is higher, and what this advantage embodied is more obvious, and power battery pack itself has battery management system
System, can voltage to battery, electric current and the monitoring of temperature alkalinity, situations such as preventing overshoot over-discharge generation.
(7) lower self-discharge rate: usual power battery can generate the feelings of self-discharge when shelving idle
Condition, the self-discharge rate of nickel-metal hydride battery are every month 60%, and ni-Cd is every month 30%, and the moon of new-energy automobile power battery
Discharge rate only has 6%~8%.
(8) good quick charge capability: 3C quick charge capacity is the 90% of 1C, realizes real quick charge；
Superior high-rate discharge ability, 5C multiplying power discharging capacity are the 80% of 0.2C multiplying power, can be with high-multiplying power discharge.
(9) environmentally protective: this project does not produce automobile power cell material and finished product, only carry out waste and old power battery at
The monomers of product, module, battery pack/group visual examination and performance test work, test include apparent size, polarity, quality and
Performance is related to visual inspection, voltmeter detection, ammeter detection, extraordinary measurer and extraordinary special equipment detection means, all surveys
Examination project is not related to any chemical treatment step, does not generate the harmful substance of any pair of environment and human body；In addition, I am public
Client is taken charge of when using the product of this project, the process being only simply charged and discharged.So this project is really green
Color is environment friendly and pollution-free.
Detailed description of the invention
Fig. 1 is tandem type power conversion system topology diagram.
In figure, 11- first filter, 12-AC/DC converter, the first wiring of 13-, the second wiring of 14-, 15- first fills
Goddess of lightning's line, the charging bus of 16- second, 17-DC/DC converter, 18- second filter, 19- battery pack.
Specific embodiment
In preferred embodiment, a kind of waste and old power battery catalyst utilization method for environmental protection of new-energy automobile includes the following steps:
S1, waste and old power battery is filtered out, wherein the waste and old power battery SOH filtered out is not less than 50%.
S2, the waste and old power battery in step S1 is detected, the waste and old power battery for meeting examination criteria is carried out
It recombinates and integrated, obtains battery pack.
In the present embodiment, the method comprising the steps of S3 turns battery pack obtained in step S2 using tandem type power
It changes system and carries out charge and discharge, referring to Fig. 1, tandem type power conversion system includes first filter, and one is terminated at alternating current.
One end of AC/DC converter is connected to the first filter other end.
Wiring includes the first wiring and the second wiring, and one end of wiring is connected to AC/DC converter, first wiring
Capacitor is set between the second wiring.
The bus that charges includes the first charging bus and the second charging bus, and the wiring is another to be terminated at charging bus.Tool
For body, the first wiring is connected to the first charging bus, and the second wiring is connected to the second charging bus.
At least one charging module, the charging module include the DC/DC converter sequentially connected, second filter,
In, the DC/DC converter is connected to charging bus, and the second filter is for charging to battery pack.The present embodiment
In, charging module is four.It can be set as needed quantity when practical application.
Tandem type energy-storage system based on independent battery group not only can satisfy two-way high-power quick adjusting, exchange
The voltage class of side meets the requirement for being directly accessed high-voltage fence, can also avoid the loss of circulation on DC bus, while
It can play the role of the electrical isolation between high-vol and A-battery group.
The cascade system has the independently-controlled, modularization, replaceable power output and energy storage integrated unit characteristics.
This cascade system can to avoid lithium ion battery cannot a large amount of concatenated inadequate natural endowments, it is humorous to obtain the output of high level
Wave property is preferable.Simultaneously with respect to the charge-discharge characteristic of power battery, battery terminal voltage can be variant under different running environment,
The flexible voltage matches feature of DC/DC is borrowed, coordinates the discrete feature of power battery well.Another aspect DC/DC, which has, to be adjusted
The effect of pressure can also reduce the requirement of battery pack end voltage consistency.Therefore its biggest advantage is the requirement to battery
It reduces, adaptability is stronger, has wider voltage matches ability to battery pack, while can be the independently-controlled convenient for collection plus it
Middle scheduling adapts to hicap charge and discharge so as to quickly respond.
In the present embodiment, in step S2, it is raw to should be same producer for each battery (single battery in battery pack) in battery pack
Produce, structure is identical, the identical product of chemical component, and meet the following requirements:
A) difference of the static open-circuit voltage maxima and minima after battery pack is fully charged between each battery should be little
In 0.30V.
B) the end voltage difference after battery pack enters floating charge state for 24 hours between each battery should be not more than 0.30V.
C) when battery pack is completely filled with after electricity with 10h rate current discharge, the end voltage difference between each battery should be not more than
0.40V。
D) in battery pack between each battery the maximum value, minimum value of capacity and the difference of average value and average value ratio, answer
Meet claimed below:
I: ±≤2%；II :≤± 3%；III :≤± 4%.
E) internal resistance maximum value, the difference and average value of minimum value and average value between the fully charged rear each battery of battery pack
Ratio should be no more than ± 20%.
F) conductance maximum value, the difference and average value of minimum value and average value between the fully charged rear each battery of battery pack
Ratio should be no more than ± 20%.
In the present embodiment, examination criteria includes following index:
1.1 charge-discharge power demand
It is charged as constant voltage and current limiting mode, the charging voltage of filling of battery is 3.55V~3.60V, the floating charge electricity of battery
Pressure is 3.40V~3.45V.
10h rate discharge current I10It indicates, numerical value 0.1C10, unit is ampere.
Charging current constant current value: 1.0I10、2.0I10、2.5I10、5.5I10、10I10、30I10It is optional.
Discharge current value: 1.0I10、2.0I10、2.5I10、5.5I10、10I10、30I10It is optional.
Final discharging voltage value: 2.60V~2.80V.
1.2 are completely filled with electricity
Judging that battery is completely filled with electricity can be by following three kinds of mode:
A) under conditions of 25 DEG C ± 2 DEG C of environment temperature, with the charging of defined electric current, when battery voltage reaches regulation
When filling charging voltage, be changed to constant-voltage charge, until charging current be less than or equal to 0.5I10A。
B) under conditions of 25 DEG C ± 2 DEG C of environment temperature, with the charging of defined electric current, when battery voltage reaches regulation
When filling charging voltage, be changed to constant-voltage charge, the charging time is not less than 16h.
C) under conditions of 25 DEG C ± 2 DEG C of environment temperature, with the charging of defined electric current, when battery voltage reaches regulation
When filling charging voltage, be changed to constant-voltage charge, until charging capacity be greater than rated capacity.
1.3 charge efficiency
After battery module or battery pack are fully charged, with 1.0I10When A current discharge is to final voltage 2.6V, recording capacity；
Again by defined voltage value requirement with 1.0I after electrostatic 1h10A current-limiting charge for 24 hours, records charging capacity, releases capacity and charging
Capacity ratio >=97%.
1.4 floating current
After battery module or battery pack are fully charged, then with float charge voltage charging for 24 hours after, charging under floating charge state electricity
Stream should be not more than 100mV.
1.5 cycle life
1.5.1 25 DEG C of 100%DOD, the cycle life of battery pack should be no less than 800 times.
A. under conditions of 25 DEG C ± 2 DEG C, battery provides 2.0I by test procedure10It (can be used less than or equal to 300Ah
5.5I10) it is fully charged after stand 0.5h~1h, then with 2.0I10(5.5I can be used less than or equal to 300Ah in A10) current discharge is extremely
Single battery final voltage 2.6V, this is a cycle life.
B. above step is repeated, until continuous 3 discharge capacities are less than the 70% of its rated value, then it is assumed that end-of-life,
Discharge cycles of the capacity less than 70% are not counted in cycle-index.
1.5.2 45 DEG C of 100%DOD, the cycle life of battery pack should be no less than 500 times.
A. under conditions of 45 DEG C ± 2 DEG C, battery provides 2.0I by test procedure10It (can be used less than or equal to 300Ah
5.5I10) it is fully charged after stand 0.5h~1h, then with 2.0I10(5.5 I can be used less than or equal to 300Ah in A10) current discharge is extremely
Single battery final voltage 2.6V, this is a cycle life.
B. above step is repeated, until continuous 3 discharge capacities are less than the 70% of its rated value, then it is assumed that end-of-life,
Discharge cycles of the capacity less than 70% are not counted in cycle-index.
1.6 security performance
1.6.1 additives for overcharge protection
Battery by test procedure regulation it is fully charged after, constant current constant voltage source voltage is set as 2 times of nominal voltages, with
1.0I10A electric current continues the 8h that charges to it, should not it is on fire, do not explode.
1.6.2 insulation resistance
It is positive and negative to tested battery with the test voltage of Insulation Resistance Tester direct current 500V for the battery of metal shell
Extreme son tests metal battery case, battery plus-negative plate interface respectively to the insulation resistance of battery pack metal shell not
Less than 2M Ω；Wherein, insulating requirements are not suitable for the battery pack of plastic shell and protection cap.
1.6.3 dielectric strength
For the battery of metal shell, with the direct current of pressure tester 50Hz, the alternating voltage of virtual value 500V or 710V
Voltage tests metal battery case tested battery plus-negative plate terminal, and battery plus-negative plate interface is respectively to battery pack gold
Belong to the DC voltage 1min of shell is able to bear 50Hz, virtual value is 500V alternating voltage (leakage current≤10mA) or 710V,
Should without breakdown, without arcing phenomena.
1.6.4 discharge performance
The battery that capacity test reaches rated value is completed by method as defined in test procedure, with 1.0I10Current discharge is extremely
0.1V is shorted for 24 hours, then with even charging voltage 3.6V current limliting 1.0I with 40 Ω resistance10A charge 48h, constitute a circulation, continuously into
After row five times circulations, with 1.0I10Current discharge answers no leakage, smolders, on fire or explosion to single battery final voltage 2.6V,
Its capacity should be not less than the 98% of rated value.
25 DEG C of electric discharges: battery is by the fully charged rear standing 0.5h~1h of regulation, under conditions of 25 DEG C ± 2 DEG C of environment temperature,
Respectively with 1.0I10A、2.5I10A、5.5I10A、10I10A、30I10A current discharge is put to single battery final voltage 2.6V
Capacitance should meet the requirements.
40 DEG C electric discharge: battery by test procedure provide it is fully charged after, put it into 40 DEG C ± 2 DEG C of high-temperature cabinet and stand
After for 24 hours, with 1.0I10A current discharge to single battery final voltage 2.6V, discharge capacity, appearance should meet the requirements.
60 DEG C electric discharge: battery by test procedure provide it is fully charged after, put it into 60 DEG C ± 2 DEG C of high-temperature cabinet and stand
After for 24 hours, with 1.0I10A current discharge to single battery final voltage 2.6V, discharge capacity, appearance should meet the requirements.
1.6.5 safe charge voltage
Battery is tested by test procedure, completes the battery that capacity test reaches rated value, completely after electric discharge, with
4.2V constant pressure, 1.0I10A current limliting is charged for 24 hours, and battery answers no leakage, smolders, on fire or explosion, and with 5.5I10A electric current
It is discharged to single battery final voltage 2.6V, no leakage is answered, smolders, on fire or explosion, capacity should be not less than rated value
100%.
It should be noted that examination criteria involved in step S2 can also refer to the prior art.In addition, in order to simple,
The elaboration to the prior art is omitted in embodiment.
The foregoing is merely the preferred embodiment of the present invention, protection scope of the present invention is not limited in above-mentioned implementation
Mode, all technical solutions for belonging to the principle of the invention all belong to the scope of protection of the present invention.For those skilled in the art
For, several improvement carried out without departing from the principles of the present invention, these improvement also should be regarded as protection of the invention
Range.
Claims (4)
1. a kind of waste and old power battery catalyst utilization method for environmental protection of new-energy automobile, which comprises the steps of:
S1, waste and old power battery is filtered out, wherein the waste and old power battery SOH filtered out is not less than 50%；
S2, the waste and old power battery in step S1 is detected, the waste and old power battery for meeting examination criteria is recombinated
And it is integrated, obtain battery pack.
2. the waste and old power battery catalyst utilization method for environmental protection of new-energy automobile according to claim 1, it is characterised in that: this method
Including step S3, battery pack obtained in step S2 is subjected to charge and discharge, tandem type function using tandem type power conversion system
Rate converting system includes:
First filter, one are terminated at alternating current；
AC/DC converter, one are terminated at the first filter other end；
Wiring comprising the first wiring and the second wiring, one end of wiring are connected to AC/DC converter, first wiring with
Capacitor is set between second wiring；
Charge bus comprising the first charging bus and the second charging bus, the wiring is another to be terminated at charging bus；
At least one charging module, the charging module include the DC/DC converter sequentially connected, second filter, wherein institute
It states DC/DC converter and is connected to charging bus, the second filter is for charging to battery pack.
3. the waste and old power battery catalyst utilization method for environmental protection of new-energy automobile according to claim 1, it is characterised in that: step S2
In, each battery should be that the production of same producer, structure be identical, the identical product of chemical component in battery pack, and meet the following requirements:
A) difference of the static open-circuit voltage maxima and minima after battery pack is fully charged between each battery should be not more than
0.30V；
B) the end voltage difference after battery pack enters floating charge state for 24 hours between each battery should be not more than 0.30V；
C) when battery pack is completely filled with after electricity with 10h rate current discharge, the end voltage difference between each battery should be not more than 0.40V；
D) in battery pack between each battery the maximum value, minimum value of capacity and the difference of average value and average value ratio, Ying Fuhe
It is claimed below:
I: ±≤2%；II :≤± 3%；III :≤± 4%.
E) ratio of internal resistance maximum value, the difference of minimum value and average value and average value is answered between each battery after battery pack is fully charged
No more than ± 20%.
F) ratio of conductance maximum value, the difference of minimum value and average value and average value is answered between each battery after battery pack is fully charged
No more than ± 20%.
4. the waste and old power battery catalyst utilization method for environmental protection of new-energy automobile according to claim 1, it is characterised in that: detection mark
Standard includes following index:
1.1 charge-discharge power demand
It is charged as constant voltage and current limiting mode, the charging voltage of filling of battery is 3.55V~3.60V, and the floating charge voltage of battery is
3.40V~3.45V；
10h rate discharge current I10It indicates, numerical value 0.1C10, unit is ampere；
Charging current constant current value: 1.0I10、2.0I10、2.5I10、5.5I10、10I10、30I10It is optional；
Discharge current value: 1.0I10、2.0I10、2.5I10、5.5I10、10I10、30I10It is optional；
Final discharging voltage value: 2.60V~2.80V；
1.2 are completely filled with electricity
Judging that battery is completely filled with electricity can be by following three kinds of mode:
A) it under conditions of 25 DEG C ± 2 DEG C of environment temperature, with the charging of defined electric current, is filled when battery voltage reaches defined
When charging voltage, it is changed to constant-voltage charge, until charging current is less than or equal to 0.5I10A；
B) it under conditions of 25 DEG C ± 2 DEG C of environment temperature, with the charging of defined electric current, is filled when battery voltage reaches defined
When charging voltage, it is changed to constant-voltage charge, the charging time is not less than 16h；
C) it under conditions of 25 DEG C ± 2 DEG C of environment temperature, with the charging of defined electric current, is filled when battery voltage reaches defined
When charging voltage, it is changed to constant-voltage charge, until charging capacity is greater than rated capacity；
1.3 charge efficiency
After battery module or battery pack are fully charged, with 1.0I10When A current discharge is to final voltage 2.6V, recording capacity；Electrostatic 1h
Afterwards again by defined voltage value requirement with 1.0I10A current-limiting charge for 24 hours, records charging capacity, release capacity and charging capacity ratio >=
97%；
1.4 floating current
After battery module or battery pack are fully charged, then with float charge voltage charging for 24 hours after, the charging current under floating charge state should not
Greater than 100mV；
1.5 cycle life
1.5.1 25 DEG C of 100%DOD, the cycle life of battery pack should be no less than 800 times；
A. under conditions of 25 DEG C ± 2 DEG C, battery provides 2.0I by test procedure10(5.5I can be used less than or equal to 300Ah10) fill
0.5h~1h is stood after full electricity, then with 2.0I10(5.5I can be used less than or equal to 300Ah in A10) current discharge is to single battery
Final voltage 2.6V, this is a cycle life；
B. above step is repeated, until continuous 3 discharge capacities are less than the 70% of its rated value, then it is assumed that end-of-life, capacity
Discharge cycles less than 70% are not counted in cycle-index；
1.5.2 45 DEG C of 100%DOD, the cycle life of battery pack should be no less than 500 times；
A. under conditions of 45 DEG C ± 2 DEG C, battery provides 2.0I by test procedure10(5.5I can be used less than or equal to 300Ah10) fill
0.5h~1h is stood after full electricity, then with 2.0I10(5.5I can be used less than or equal to 300Ah in A10) current discharge is to single battery
Final voltage 2.6V, this is a cycle life；
B. above step is repeated, until continuous 3 discharge capacities are less than the 70% of its rated value, then it is assumed that end-of-life, capacity
Discharge cycles less than 70% are not counted in cycle-index；
1.6 security performance
1.6.1 additives for overcharge protection
Battery by test procedure regulation it is fully charged after, constant current constant voltage source voltage is set as 2 times of nominal voltages, with 1.0I10A electric current
Continue the 8h that charges to it, should not it is on fire, do not explode；
1.6.2 insulation resistance
For the battery of metal shell, with the test voltage of Insulation Resistance Tester direct current 500V, to tested battery plus-negative plate end
Son tests metal battery case, and battery plus-negative plate interface is not less than 2M to the insulation resistance of battery pack metal shell respectively
Ω；Wherein, insulating requirements are not suitable for the battery pack of plastic shell and protection cap；
1.6.3 dielectric strength
For the battery of metal shell, with the DC voltage of pressure tester 50Hz, the alternating voltage of virtual value 500V or 710V,
Tested battery plus-negative plate terminal tests metal battery case, battery plus-negative plate interface is respectively to battery pack metal shell
It is able to bear 50Hz, the DC voltage 1min of the alternating voltage (leakage current≤10mA) that virtual value is 500V or 710V, it should be without hitting
It wears, without arcing phenomena；
1.6.4 discharge performance
The battery that capacity test reaches rated value is completed by method as defined in test procedure, with 1.0I10Current discharge is used to 0.1V
40 Ω resistance are shorted for 24 hours, then with even charging voltage 3.6V current limliting 1.0I10A charging 48h, constitutes a circulation, is carried out continuously five times and follows
After ring, with 1.0I10Current discharge to single battery final voltage 2.6V, answer no leakage, smolder, on fire or explosion, capacity are answered
Not less than the 98% of rated value；
25 DEG C of electric discharges: battery is by fully charged rear standing 0.5h~1h is provided, under conditions of 25 DEG C ± 2 DEG C of environment temperature, respectively
With 1.0I10A、2.5I10A、5.5I10A、10I10A、30I10A current discharge is to single battery final voltage 2.6V, discharge capacity
It should meet the requirements；
40 DEG C electric discharge: battery by test procedure provide it is fully charged after, put it into 40 DEG C ± 2 DEG C of high-temperature cabinet after standing for 24 hours,
With 1.0I10A current discharge to single battery final voltage 2.6V, discharge capacity, appearance should meet the requirements；
60 DEG C electric discharge: battery by test procedure provide it is fully charged after, put it into 60 DEG C ± 2 DEG C of high-temperature cabinet after standing for 24 hours,
With 1.0I10A current discharge to single battery final voltage 2.6V, discharge capacity, appearance should meet the requirements；
1.6.5 safe charge voltage
Battery is tested by test procedure, the battery that capacity test reaches rated value is completed, completely after electric discharge, with 4.2V perseverance
Pressure, 1.0I10A current limliting is charged for 24 hours, and battery answers no leakage, smolders, on fire or explosion, and with 5.5I10A current discharge is to list
Body battery final voltage 2.6V answers no leakage, smolders, on fire or explosion, and capacity should be not less than the 100% of rated value.
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