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 PDF

Info

Publication number
CN110504500A
CN110504500A CN201910729916.3A CN201910729916A CN110504500A CN 110504500 A CN110504500 A CN 110504500A CN 201910729916 A CN201910729916 A CN 201910729916A CN 110504500 A CN110504500 A CN 110504500A
Authority
CN
China
Prior art keywords
battery
voltage
charging
current
discharge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910729916.3A
Other languages
Chinese (zh)
Inventor
吴跃波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CHONGQING YUEDA ELECTRIC POWER EQUIPMENT Co Ltd
Original Assignee
CHONGQING YUEDA ELECTRIC POWER EQUIPMENT Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CHONGQING YUEDA ELECTRIC POWER EQUIPMENT Co Ltd filed Critical CHONGQING YUEDA ELECTRIC POWER EQUIPMENT Co Ltd
Priority to CN201910729916.3A priority Critical patent/CN110504500A/en
Publication of CN110504500A publication Critical patent/CN110504500A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC 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
    • HELECTRICITY
    • H01ELECTRIC 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
    • H01M10/4221Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells with battery type recognition
    • HELECTRICITY
    • H01ELECTRIC 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
    • H01M10/425Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • HELECTRICITY
    • H01ELECTRIC 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
    • HELECTRICITY
    • H01ELECTRIC 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
    • H01M10/48Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • HELECTRICITY
    • H01ELECTRIC 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
    • HELECTRICITY
    • H01ELECTRIC 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
    • H01M10/425Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4271Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • 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

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

The waste and old power battery catalyst utilization method for environmental protection of new-energy automobile
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.
CN201910729916.3A 2019-08-08 2019-08-08 The waste and old power battery catalyst utilization method for environmental protection of new-energy automobile Pending CN110504500A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910729916.3A CN110504500A (en) 2019-08-08 2019-08-08 The waste and old power battery catalyst utilization method for environmental protection of new-energy automobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910729916.3A CN110504500A (en) 2019-08-08 2019-08-08 The waste and old power battery catalyst utilization method for environmental protection of new-energy automobile

Publications (1)

Publication Number Publication Date
CN110504500A true CN110504500A (en) 2019-11-26

Family

ID=68587115

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910729916.3A Pending CN110504500A (en) 2019-08-08 2019-08-08 The waste and old power battery catalyst utilization method for environmental protection of new-energy automobile

Country Status (1)

Country Link
CN (1) CN110504500A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111640999A (en) * 2020-06-02 2020-09-08 深圳市华森建筑工程咨询有限公司 Battery recycling method, system and computer readable storage medium
WO2023220949A1 (en) * 2022-05-18 2023-11-23 宁德时代新能源科技股份有限公司 Battery swapping method, system and apparatus, storage medium, and computer program product

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012043694A (en) * 2010-08-20 2012-03-01 Sumitomo Metal Mining Co Ltd Determination method for discharge completion of waste battery and determination device
CN103337671A (en) * 2013-06-27 2013-10-02 国家电网公司 Cascade utilization screening method of waste power batteries
CN104333107A (en) * 2014-10-29 2015-02-04 中国石油化工股份有限公司 Direct-current screen power source device utilizing hybrid power sources
CN104362395A (en) * 2014-09-12 2015-02-18 奇瑞汽车股份有限公司 Screening method for cascade utilization of waste cells
CN105842629A (en) * 2016-03-29 2016-08-10 荆门市格林美新材料有限公司 Power battery cascade utilization detection assessment method
CN106471699A (en) * 2016-07-15 2017-03-01 深圳市科列技术股份有限公司 A kind of dynamic equalization circuit of battery management system and its method for dynamically balancing
JP2018028967A (en) * 2016-08-15 2018-02-22 トヨタ自動車株式会社 Method for manufacturing battery pack
CN108535650A (en) * 2017-03-01 2018-09-14 苏州协鑫集成科技工业应用研究院有限公司 Li-ion batteries piles consistency discrimination method and 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

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012043694A (en) * 2010-08-20 2012-03-01 Sumitomo Metal Mining Co Ltd Determination method for discharge completion of waste battery and determination device
CN103337671A (en) * 2013-06-27 2013-10-02 国家电网公司 Cascade utilization screening method of waste power batteries
CN104362395A (en) * 2014-09-12 2015-02-18 奇瑞汽车股份有限公司 Screening method for cascade utilization of waste cells
CN104333107A (en) * 2014-10-29 2015-02-04 中国石油化工股份有限公司 Direct-current screen power source device utilizing hybrid power sources
CN105842629A (en) * 2016-03-29 2016-08-10 荆门市格林美新材料有限公司 Power battery cascade utilization detection assessment method
CN106471699A (en) * 2016-07-15 2017-03-01 深圳市科列技术股份有限公司 A kind of dynamic equalization circuit of battery management system and its method for dynamically balancing
JP2018028967A (en) * 2016-08-15 2018-02-22 トヨタ自動車株式会社 Method for manufacturing battery pack
CN108535650A (en) * 2017-03-01 2018-09-14 苏州协鑫集成科技工业应用研究院有限公司 Li-ion batteries piles consistency discrimination method and 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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111640999A (en) * 2020-06-02 2020-09-08 深圳市华森建筑工程咨询有限公司 Battery recycling method, system and computer readable storage medium
WO2023220949A1 (en) * 2022-05-18 2023-11-23 宁德时代新能源科技股份有限公司 Battery swapping method, system and apparatus, storage medium, and computer program product

Similar Documents

Publication Publication Date Title
CN104935045B (en) Battery pack equalization method for energy storage system adopting nickel-series storage batteries
CN205039569U (en) Lithium ion battery organizes balanced management system
CN114709896B (en) Battery charging and discharging system based on reconstruction and charging and discharging control method
CN107597619A (en) Lithium titanate cell uniformity method for separating
CN101826745B (en) Lithium ion power battery lossless charger
CN107377422B (en) A kind of method for separating of single battery
CN105489962A (en) Recycling method for waste power lithium ion batteries
CN109530275A (en) Retired battery sorting method and system
CN103008261A (en) Method for sorting degrees of self-discharging of lithium ion batteries
CN107362989B (en) A kind of method for separating of lithium-ion-power cell
CN104037461B (en) Power train in vehicle application lithium ion battery grouping method
CN104993602A (en) Modular energy storage system
CN111239629B (en) Echelon utilization state interval division method for retired lithium battery
CN107597621B (en) A kind of screening technique and method for group matching promoting ternary Li-ion batteries piles consistency
CN107369858B (en) A kind of Bi-objective Balance route strategy stage by stage
CN103219766B (en) Non-floating charge lithium electricity type station DC power system
CN107618397A (en) Battery management system
CN107733007A (en) A kind of direct equalizing circuit of battery pack Bi-objective and equalization methods
CN110504500A (en) The waste and old power battery catalyst utilization method for environmental protection of new-energy automobile
CN106910957A (en) A kind of secondary utilization lead-acid batteries screening technique
CN108832205A (en) A kind of method for group matching of power lithium iron phosphate battery
CN204835716U (en) Modular energy storage system
CN106549469A (en) A kind of lithium battery charged in parallel is used in series circuit structure
CN107225104B (en) A kind of method for separating of battery
CN202309118U (en) Transformer scan chain type storage battery equalizing circuit

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20191126