CN108134154A - A kind of safe disassembling method of waste and old lithium ion battery - Google Patents
A kind of safe disassembling method of waste and old lithium ion battery Download PDFInfo
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- CN108134154A CN108134154A CN201810031605.5A CN201810031605A CN108134154A CN 108134154 A CN108134154 A CN 108134154A CN 201810031605 A CN201810031605 A CN 201810031605A CN 108134154 A CN108134154 A CN 108134154A
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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
- H01M10/44—Methods for charging or discharging
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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 safe disassembling method of waste and old lithium ion battery, i.e.,：Carry out being discharged to voltage before disassembling less than 0.6V；Charging method is：Waste and old lithium ion battery is mixed into conducting powder, the conducting powder includes conductive mica powder, and the conducting powder particle size range is 0.1 5 μm, and resistivity is less than 100 Ω cm, the conducting powder further includes auxiliary discharge ingredient, and the auxiliary discharge ingredient is the mixed powder for including calcium carbonate and schungite.By the use of the conductive powder body including conductive mica powder as discharge medium in the present invention, under conditions of waste and old lithium ion battery and conducting powder are sufficiently mixed, it can realize quick, the efficient discharge of waste and old lithium ion battery, waste and old lithium ion battery voltage can be reduced rapidly to 0.6V hereinafter, can guarantee the safety in the follow-up disassembly process of waste and old lithium ion battery.
Description
Technical field
The invention belongs to waste and old lithium ion battery recycling fields, and in particular to a kind of waste and old lithium ion battery side of disassembling safely
Method.
Background technology
With the extensive propulsion that lithium ion battery is applied in power car field, the recycling of waste and old power lithium-ion battery is asked
Topic, increasingly significantly.With the prosperity of new-energy automobile market, power lithium-ion battery market also keeps strong growth situation, not
That the problem of large quantities of power batteries scrap processing will be faced in 3-5.Although with electronic equipment lithium ion battery market
Expansion so that the returned enterprise of scale has occurred.
At present in waste and old lithium ion battery recovery process, most enterprises are concentrated on to positive/negative plate and active material
It is recycled, also there are Some Enterprises to be made that corresponding research for the recycling of electrolyte, but in recovery process
But rarely people pays close attention to the technique of disassembling being adapted.The first step after waste and old lithium ion battery recycling is to disassemble, and disassembles process
Lithium ion battery is split different components according to component included in its preparation process, it is typical i.e. by lithium ion
Battery is split as shell, positive/negative plate and diaphragm.
Waste and old lithium ion battery disassemble be not using external force simply by each component separate, but be related to as
What is separated each component is lossless, and need to consider the safety during entirely disassembling.Waste and old lithium ion battery is recycled
The first step of processing first has to efficiently release power secure remaining in battery, could carry out subsequent disassembling, crushing
Process, it is highly exothermic due to battery short circuit during otherwise disassembling, in some instances it may even be possible to which that the unsafe conditions such as occur exploding, and causes thing
Therefore.At present, for the safe-discharge of waste and old lithium ion battery there are mainly two types of method, one kind is physical method electric discharge, mainly
By external load electric eliminating, i.e., it is connected by battery with resistance, the electricity in battery is consumed by heat release, but this method is real
Room experiment is tested, is discharged on a large scale infeasible；Another kind is chemical method electric discharge, i.e., using the positive and negative anodes metal of battery for cathode and
Anode consumes electricity remaining in battery by electrolytic process in the solution, at present mainly using contain the aqueous solution of salt as
Electrolyte is slowly discharged.But this kind of method discharge rate is slow, influences production efficiency, and electrolysis water easily generates hydrogen, oxygen
Deng there are security risk, used water is difficult to handle due to the pollution of organic electrolyte that bad used batteries flow out.In the prior art
Any efficient, safe-discharge technique being directed to during waste and old lithium ion battery is disassembled is not suggested that.
Invention content
In order to solve the deficiencies in the prior art, the present invention provides a kind of highly effective and safes, easy to operate, of low cost
Waste and old lithium ion battery electric discharge method.It is situated between in the present invention by the use of the conductive powder body including conductive mica powder as electric discharge
Matter under conditions of waste and old lithium ion battery and conducting powder are sufficiently mixed, can realize the quick, efficient of waste and old lithium ion battery
Electric discharge, waste and old lithium ion battery voltage can be reduced rapidly to 0.6V hereinafter, can guarantee the follow-up disassembly process of waste and old lithium ion battery
In safety.
Institute of the invention technique effect to be achieved is realized by following scheme：
The safe disassembling method of waste and old lithium ion battery provided in the present invention, i.e.,：
The waste and old lithium ion battery carries out being discharged to before disassembling voltage less than 0.6V；
Charging method is：Waste and old lithium ion battery is mixed into conducting powder, the conducting powder includes conductive mica powder.
Further, the conducting powder particle size range is 0.1-5 μm, and resistivity is less than 100 Ω cm.
Compared to allowing battery repid discharge using salt-containing solution in the prior art, using including conductive cloud in the present invention
The conducting powder of female powder realizes the repid discharge of battery as discharge medium.Conductive mica powder be in flakey, appearance generally in
Canescence or grayish powder, acid and alkali resistance and organic solvent, non-oxidative are less than 800 DEG C stabilizations, fire-retardant.Conductive mica powder
Resistivity is less than 100 Ω cm, and can be used alone can also be used in mixed way with other powder.
Further, the conducting powder further includes auxiliary discharge ingredient, the auxiliary discharge ingredient be include calcium carbonate and
The mixed powder of schungite, preparation method are：
S01：By calcium carbonate, aerosil with mass ratio 1：（0.2-0.3）Added in absolute ethyl alcohol, after stirring evenly
Using ammonium hydroxide adjustment pH to 8-9, viscosity 4-8cP, the TEOS reagents for then adding calcium carbonate quality 3-5wt% are stirred to react 8-
Natural cooling after 12h is washed solid product to surface noresidue, is finally dried after filtering；
S02：Solid product obtained in S01 is scattered in absolute ethyl alcohol, is denoted as solution A；Schungite powder is taken equally to disperse
In absolute ethyl alcohol, the silane coupling agent for accounting for that its mass percent is 1-3% is added in, 90-95 DEG C of constant temperature mechanical agitation is warming up to and returns
Natural cooling after stream 6-8h, washing solid product to surface noresidue is dry, obtains modified schungite powder B；
S03：Powder B is put into solution A, carries out wet-milling to being uniformly dispersed, finally obtains required auxiliary discharge ingredient.
Conductive mica powder is mixed with the better powder of electric conductivity can increase electric conductivity, can then be dropped with the worse powder of electric conductivity
Low electric conductivity can so adjust discharge rate of the old and useless battery in the powder, realize safe and efficient electric discharge.Due to conduction
Mica powder surface can be low, attaches with battery surface that performance is general in battery discharge procedure, in order to improve conducting powder and battery
Contact performance（Loose contact meeting guiding discharge process slows down）, the present invention in conductive powder body in addition to conductive mica powder, also add
Auxiliary discharge ingredient is added, the auxiliary discharge ingredient mainly includes the modified powder of calcium carbonate and schungite.
Calcium carbonate surface is coated into layer of silicon dioxide aeroge using method of modifying first in the present invention, then utilizes two
Silica aerogel hole in itself and absorption property are by the good schungite powder of electric conductivity and attaching property and the Paris white bodily form
Into uniform mixture.On the one hand, the good mixing property of calcium carbonate powder, heap density are high, are used in combination with conductive mica powder
The contact performance between conducting powder and battery can be effectively promoted, and calcium carbonate powder is cheap, raw material is easy to get, and contributes to
Reduce electric discharge cost.On the other hand, the addition of schungite powder then improves the electric conductivity of calcium carbonate powder, make auxiliary discharge into
The addition divided does not interfere with battery discharge procedure.
The excellent electric conductivity of conductive mica powder so that electron-transport is efficient, substantially increases discharging efficiency, conductive cloud
The excellent fire-retardancy of female powder and auxiliary discharge ingredient reduces security risk.The chemical stability of conducting powder causes it to make
It can be reused after, discharge process is made to have both economy and the feature of environmental protection.Battery can be kept after waste and old lithium ion battery electric discharge
Integrality, the good waste and old lithium ion battery of integrality can be obtained after sieves, convenient for subsequently disassembling.Technical scheme of the present invention
In waste and old lithium ion battery is made safely and efficiently to discharge, avoid traditional electric discharge in aqueous solution be also easy to produce hydrogen, oxygen and
It is highly exothermic to lead to the undesirable elements such as boiling water, explosive.
Further, in S01, reaction temperature is 40-55 DEG C.Reaction temperature should be slightly above room temperature, but unsuitable excessively high, influence
The being evenly coated property of aerosil.
Further, in S01, drying temperature is 80-90 DEG C, a length of 8-12h when dry.
Further, in S01, used aerosil porosity is 88-95%, specific surface area 550-600
㎡/g, bore hole size 100-200nm.Porosity, specific surface area and the bore hole size of aerosil determine carbonic acid
Mixed performance between calcium powder body and schungite powder.
Further, in S02, the additive amount of absolute ethyl alcohol is can submerge S01 solid products and modified stone in solution A
Ink powder body B；It is modified 20-30 times that absolute ethyl alcohol additive amount in schungite powder B preparation process is schungite powder volume.
Further, in S02, schungite powder quality is with solid product mass ratio in S01（1.2-1.3）:1.
Further, in S03, to promote dispersion efficiency, the wet milling device is planetary ball mill.
Further, it is preferable to the preparation method of the conducting powder is：By conductive mica powder and auxiliary discharge ingredient with quality
Than（1.5-2）：It is 0.1-5 μm that particle size range is ground to after 1 mixing.Conductive mica powder and auxiliary discharge component ratio need to control suitable
In, conductive mica powder can excessively promote cost, influence conducting powder and the contact performance of battery, and auxiliary discharge ingredient is crossed and at most can
Influence the velocity of discharge of battery.The particle size range of conductive powder body also directly affects battery discharge and battery after battery discharge
The complexity of sieving.
The present invention has the following advantages：
The present invention provides a kind of highly effective and safe, the methods of waste and old lithium ion battery electric discharge easy to operate, low-cost.This hair
The bright middle conductive powder body by the use of including conductive mica powder is abundant with conducting powder in waste and old lithium ion battery as discharge medium
Under conditions of mixing, quick, the efficient discharge of waste and old lithium ion battery can be realized, waste and old lithium ion battery voltage can fast prompt drop
Down to 0.6V hereinafter, can guarantee the safety in the follow-up disassembly process of waste and old lithium ion battery.
Specific embodiment
With reference to embodiment, the present invention will be described in detail.
Embodiment 1
The preparation of auxiliary discharge ingredient is as follows：
S01：By calcium carbonate, aerosil with mass ratio 1：0.2 is added in absolute ethyl alcohol, and ammonia is utilized after stirring evenly
Water adjust pH between 8-9, viscosity 5.26cP, after then the TEOS reagents of addition calcium carbonate quality 3wt% are stirred to react 8h
（Reaction temperature is 45 DEG C）Natural cooling washs solid product to surface noresidue after filtering, finally dry under the conditions of 80 DEG C
12h。
Aerosil porosity used in this step is 92%, and specific surface area is 584 ㎡/g, and hole is average
Size is 155nm.
S02：Solid product obtained in S01 is scattered in absolute ethyl alcohol, is denoted as solution A；Take schungite powder similary
It is scattered in absolute ethyl alcohol, adds in the silane coupling agent for accounting for that its mass percent is 1%, be warming up to 90 DEG C of constant temperature mechanical agitations and return
Natural cooling after stream 8h, washing solid product to surface noresidue is dry, obtains modified schungite powder B.
The additive amount of absolute ethyl alcohol is can submerge S01 solid products and modified schungite powder B in solution A；Change
Property schungite powder B preparation process in absolute ethyl alcohol additive amount be 20 times of schungite powder volume.Schungite powder quality with
Solid product mass ratio is 1.2 in S01:1.
S03：Powder B is put into solution A, wet-milling is carried out to being uniformly dispersed using planetary ball mill, finally obtains required
Auxiliary discharge ingredient.
The preparation of conducting powder：
By conductive mica powder and the above-mentioned auxiliary discharge ingredient being prepared with mass ratio 1.5：Average particle size is ground to after 1 mixing
It is 1 μm.
Embodiment 2
The present embodiment other conditions are same as Example 1, the difference lies in：The preparation specific steps S01 of auxiliary discharge ingredient
Middle calcium carbonate, aerosil are with mass ratio 1：0.22 is added in absolute ethyl alcohol.
Embodiment 3
The present embodiment other conditions are same as Example 1, the difference lies in：The preparation specific steps S01 of auxiliary discharge ingredient
Middle calcium carbonate, aerosil are with mass ratio 1：0.25 is added in absolute ethyl alcohol.
Embodiment 4
The present embodiment other conditions are same as Example 1, the difference lies in：The preparation specific steps S01 of auxiliary discharge ingredient
Middle calcium carbonate, aerosil are with mass ratio 1：0.28 is added in absolute ethyl alcohol.
Embodiment 5
The present embodiment other conditions are same as Example 1, the difference lies in：The preparation specific steps S01 of auxiliary discharge ingredient
Middle calcium carbonate, aerosil are with mass ratio 1：0.30 is added in absolute ethyl alcohol.
Embodiment 6
The present embodiment other conditions are same as Example 1, the difference lies in：The preparation specific steps S02 of auxiliary discharge ingredient
In, absolute ethyl alcohol additive amount is 30 times of schungite powder volume in modified schungite powder B preparation process.
Embodiment 7
The present embodiment other conditions are same as Example 1, the difference lies in：The preparation specific steps S02 of auxiliary discharge ingredient
In, schungite powder quality is 1.25 with solid product mass ratio in S01:1.
Embodiment 8
The present embodiment other conditions are same as Example 1, the difference lies in：The preparation specific steps S02 of auxiliary discharge ingredient
In, schungite powder quality is 1.3 with solid product mass ratio in S01:1.
Embodiment 9
The present embodiment other conditions are same as Example 1, the difference lies in：The preparation method of conducting powder is：By Conductive mica
Powder and auxiliary discharge ingredient are with mass ratio 1.6：It is 1 μm to be ground to after 1 mixing to average particle size.
Embodiment 10
The present embodiment other conditions are same as Example 1, the difference lies in：The preparation method of conducting powder is：By Conductive mica
Powder and auxiliary discharge ingredient are with mass ratio 1.8：It is 1 μm to be ground to after 1 mixing to average particle size.
Embodiment 11
The present embodiment other conditions are same as Example 1, the difference lies in：The preparation method of conducting powder is：By Conductive mica
Powder and auxiliary discharge ingredient are with mass ratio 2：It is 1 μm to be ground to after 1 mixing to average particle size.
Embodiment 12
The present embodiment other conditions are same as Example 1, the difference lies in：The preparation method of conducting powder is：By Conductive mica
Powder and the above-mentioned auxiliary discharge ingredient being prepared are with mass ratio 1.5：It is 0.1 μm that average particle size is ground to after 1 mixing.
Embodiment 13
The present embodiment other conditions are same as Example 1, the difference lies in：The preparation method of conducting powder is：By Conductive mica
Powder and the above-mentioned auxiliary discharge ingredient being prepared are with mass ratio 1.5：It is 2 μm that average particle size is ground to after 1 mixing.
Embodiment 14
The present embodiment other conditions are same as Example 1, the difference lies in：The preparation method of conducting powder is：By Conductive mica
Powder and the above-mentioned auxiliary discharge ingredient being prepared are with mass ratio 1.5：It is 5 μm that average particle size is ground to after 1 mixing.
By the carry out resistivity measurement for the conducting powder being prepared in embodiment 1-14, while will be by waste and old lithium ion battery
It is mixed into conducting powder be discharged to after voltage is less than 0.6V and be disassembled.Waste and old lithium ion battery used in embodiment is just
Pole collector is aluminium foil, and negative current collector is copper foil, and tow sides apply on plus plate current-collecting body aluminium foil and negative current collector copper foil
Active material is covered, diaphragm is adopted as Celgard 2500, bath composition 1MLiPF6It is dissolved in ethylene carbonate:Carbonic acid diethyl
Ester=1:1（Volume ratio）Organic solution.
Conducting powder resistivity measurement result is as follows：
It is discharged using the method in the present embodiment and improves more than 60% than traditional salting liquid velocity of discharge, conducting powder is excellent
Good electric conductivity so that electron-transport is efficient, substantially increases discharging efficiency, and excellent flame retardant property reduces safety
Hidden danger, chemical stability cause it that can reuse after use.Battery can be kept after waste and old lithium ion battery electric discharge
Integrality can obtain the good waste and old lithium ion battery of integrality after sieves, convenient for subsequently disassembling.
It is last it should be noted that above example be only to illustrate the embodiment of the present invention technical solution rather than to its into
Row limitation, although the embodiment of the present invention is described in detail with reference to preferred embodiment, those of ordinary skill in the art
It should be understood that the technical solution of the embodiment of the present invention can be still modified or replaced equivalently, and these are changed or wait
The range of modified technical solution disengaging technical solution of the embodiment of the present invention cannot also be made with replacement.
Claims (10)
1. a kind of safe disassembling method of waste and old lithium ion battery, it is characterised in that：
The waste and old lithium ion battery carries out being discharged to before disassembling voltage less than 0.6V；
Charging method is：Waste and old lithium ion battery is mixed into conducting powder, the conducting powder includes conductive mica powder.
2. the safe disassembling method of waste and old lithium ion battery as described in claim 1, it is characterised in that：The conducting powder particle size range
It it is 0.1-5 μm, resistivity is less than 100 Ω cm.
3. the safe disassembling method of waste and old lithium ion battery as described in claim 1, it is characterised in that：The conducting powder further includes auxiliary
Electric discharge ingredient is helped, the auxiliary discharge ingredient is the mixed powder for including calcium carbonate and schungite, and preparation method is：
S01：By calcium carbonate, aerosil with mass ratio 1：（0.2-0.3）Added in absolute ethyl alcohol, after stirring evenly
Using ammonium hydroxide adjustment pH to 8-9, viscosity 4-8cP, the TEOS reagents for then adding calcium carbonate quality 3-5wt% are stirred to react 8-
Natural cooling after 12h is washed solid product to surface noresidue, is finally dried after filtering；
S02：Solid product obtained in S01 is scattered in absolute ethyl alcohol, is denoted as solution A；Schungite powder is taken equally to disperse
In absolute ethyl alcohol, the silane coupling agent for accounting for that its mass percent is 1-3% is added in, 90-95 DEG C of constant temperature mechanical agitation is warming up to and returns
Natural cooling after stream 6-8h, washing solid product to surface noresidue is dry, obtains modified schungite powder B；
S03：Powder B is put into solution A, carries out wet-milling to being uniformly dispersed, finally obtains required auxiliary discharge ingredient.
4. the safe disassembling method of waste and old lithium ion battery as claimed in claim 3, it is characterised in that：In S01, reaction temperature is
40-55℃。
5. the safe disassembling method of waste and old lithium ion battery as claimed in claim 3, it is characterised in that：In S01, drying temperature is
80-90 DEG C, a length of 8-12h when dry.
6. the safe disassembling method of waste and old lithium ion battery as claimed in claim 3, it is characterised in that：In S01, used dioxy
SiClx aeroge porosity is 88-95%, and specific surface area is 550-600 ㎡/g, bore hole size 100-200nm.
7. the safe disassembling method of waste and old lithium ion battery as claimed in claim 3, it is characterised in that：It is anhydrous in solution A in S02
The additive amount of ethyl alcohol is can submerge S01 solid products and modified schungite powder B；In modified schungite powder B preparation process
Absolute ethyl alcohol additive amount is 20-30 times of schungite powder volume.
8. the safe disassembling method of waste and old lithium ion battery as claimed in claim 3, it is characterised in that：In S02, schungite powder matter
It measures with solid product mass ratio in S01 and is（1.2-1.3）:1.
9. the safe disassembling method of waste and old lithium ion battery as claimed in claim 3, it is characterised in that：In S03, wet milling device is row
Celestial body grinding machine.
10. the safe disassembling method of waste and old lithium ion battery as claimed in claim 3, it is characterised in that：The preparation of the conducting powder
Method is：By conductive mica powder and auxiliary discharge ingredient with mass ratio（1.5-2）：Particle size range is ground to after 1 mixing as 0.1-5
μm。
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| CN109004308A (en) * | 2018-08-27 | 2018-12-14 | 惠州亿纬锂能股份有限公司 | Waste and old lithium ion battery charging method |
| CN111370794A (en) * | 2020-03-19 | 2020-07-03 | 河南小威环境科技有限公司 | Method for releasing electric quantity of lithium ion battery |
| CN112201872A (en) * | 2020-10-22 | 2021-01-08 | 中国科学院宁波材料技术与工程研究所 | Safe discharge method and wet physical sorting method for retired batteries |
| CN112687974A (en) * | 2021-03-16 | 2021-04-20 | 嘉兴模度新能源有限公司 | Chemical disassembling method applied to battery adhesive module |
| TWI753719B (en) * | 2019-12-31 | 2022-01-21 | 美商歐美加應用材料有限公司 | Coke powder as a discharging agent for waste battery recycling and method thereof |
| CN114335768A (en) * | 2021-11-23 | 2022-04-12 | 深圳供电局有限公司 | Waste lithium iron phosphate battery discharging device, discharging method and application |
| CN115084700A (en) * | 2022-06-27 | 2022-09-20 | 中南大学 | Thermosensitive discharge particles and safe discharge method of waste lithium ion battery |
| CN116706287A (en) * | 2023-08-08 | 2023-09-05 | 宁德时代新能源科技股份有限公司 | Battery capacity sorting device and sorting method |
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| CN109004308A (en) * | 2018-08-27 | 2018-12-14 | 惠州亿纬锂能股份有限公司 | Waste and old lithium ion battery charging method |
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| CN114335768A (en) * | 2021-11-23 | 2022-04-12 | 深圳供电局有限公司 | Waste lithium iron phosphate battery discharging device, discharging method and application |
| CN114335768B (en) * | 2021-11-23 | 2024-05-24 | 深圳供电局有限公司 | Discharging device, discharging method and application of waste lithium iron phosphate battery |
| CN115084700A (en) * | 2022-06-27 | 2022-09-20 | 中南大学 | Thermosensitive discharge particles and safe discharge method of waste lithium ion battery |
| CN115084700B (en) * | 2022-06-27 | 2024-06-04 | 中南大学 | Safety discharge method for thermosensitive discharge particles and waste lithium ion batteries |
| CN116706287A (en) * | 2023-08-08 | 2023-09-05 | 宁德时代新能源科技股份有限公司 | Battery capacity sorting device and sorting method |
| CN116706287B (en) * | 2023-08-08 | 2024-01-12 | 宁德时代新能源科技股份有限公司 | Battery capacity sorting device and sorting method |
| CN116885329A (en) * | 2023-09-07 | 2023-10-13 | 深圳市杰成镍钴新能源科技有限公司 | Battery discharging device and battery discharging control method |
| CN116885329B (en) * | 2023-09-07 | 2023-12-29 | 深圳市杰成镍钴新能源科技有限公司 | Battery discharging device and battery discharging control method |
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