阅读说明：本技术 一种可注/抽液锂电池的全生命周期运营模式 (Full life cycle operation mode of lithium battery capable of injecting/extracting liquid ) 是由 陈永翀 张晓虎 张艳萍 刘昊 何颖源 谢晨 陈志香 王玉伟 于 2018-05-30 设计创作，主要内容包括：本发明提供一种可注/抽液锂电池的全生命周期运营模式,结合可注/抽液锂电池的特性,在电池出厂时电池隔离层内不含电解液,使得电池在运输至用户端或中转站时,电池内部不发生电化学反应,能够作为非危品安全运输；同时,当电池寿命终止需要报废处理时,通过抽液口将电池内电解液抽出并注入安全剂,使得报废电池在运输至回收站的过程中不发生电化学反应,能够作为非危品安全运输。本发明中,可注/抽液锂电池的全生命周期运营模式包括“电池出厂—安全运输—电池激活—安全运行—维护再生/安全报废—安全运输—回收处理—再生制造”等一系列步骤。(the invention provides a full life cycle operation mode of a liquid injection/extraction lithium battery, which combines the characteristics of the liquid injection/extraction lithium battery, and does not contain electrolyte in a battery isolation layer when the battery leaves a factory, so that when the battery is transported to a user terminal or a transfer station, electrochemical reaction does not occur in the battery, and the battery can be safely transported as a non-dangerous article; meanwhile, when the service life of the battery needs to be abandoned, electrolyte in the battery is pumped out through the liquid pumping port and is injected with the safety agent, so that the abandoned battery does not generate electrochemical reaction in the process of being transported to a recycling station, and the abandoned battery can be safely transported as a non-dangerous article. In the invention, the full life cycle operation mode of the liquid injection/extraction lithium battery comprises a series of steps of battery delivery, safe transportation, battery activation, safe operation, maintenance regeneration/safe scrapping, safe transportation, recovery treatment, regeneration manufacturing and the like.)

1. A full life cycle operation mode of a lithium battery capable of injecting/extracting liquid is provided with a liquid injection port and/or a liquid extraction port and an isolation layer, and is characterized in that the full life cycle operation mode comprises a safe transportation step, and in the safe transportation process, active lithium ions capable of migrating or participating in electrochemical reaction are not contained in the isolation layer of the lithium battery capable of injecting/extracting liquid or one or more anionic groups capable of forming coordination with the lithium ions are not contained in the isolation layer, so that the lithium battery capable of injecting/extracting liquid can be safely transported to a user end or a transfer station as non-dangerous articles when the battery leaves a factory, and then electrolyte is injected into the battery through the liquid injection port and/or the liquid extraction port to activate the lithium battery capable of injecting/extracting liquid; or the lithium battery capable of being injected/extracted can be discharged from the electrolyte in the battery through the liquid injection port and/or the liquid extraction port when the service life of the battery needs to be scrapped, and a safety agent is injected, so that electrochemical reaction cannot occur in the battery, and the lithium battery capable of being injected/extracted can be safely transported to a recycling station as a non-hazardous material when the battery is recycled.

2. The full-life cycle operation mode of lithium battery as claimed in claim 1, wherein the active lithium comprises soluble lithium salt and the anionic group capable of forming coordination with lithium ion comprises one or more of ClO ₄ ^- , AsF ₆ ^- , PF ₆ ^- , LiBF ₄ ^- , CF ₃ SO ₃ ^- , N (SO ₂ CF ₃) ₂ ^- .

3. The full-life-cycle operation mode of the lithium liquid injection/extraction battery according to claim 1, wherein the lithium liquid injection/extraction battery is a lithium liquid injection battery, a positive plate, a negative plate and a separation layer between the positive plate and the negative plate are arranged in the lithium liquid injection battery, the positive plate of the lithium liquid injection battery contains positive active conductive particles in a dry state, the positive active conductive particles are a composite or mixture of a positive active material and a conductive component, the negative plate of the lithium liquid injection battery contains negative active conductive particles in a dry state, and the negative active conductive particles are a composite or mixture of a negative active material and a conductive component; the dry state comprises powder accumulation, sheet pressing or block pressing, and the dry positive active conductive particles and the dry negative active conductive particles do not contain electrolyte when the liquid injection type lithium slurry battery leaves a factory, and no electrochemical reaction occurs in the battery.

4. the full-life-cycle operation mode of the lithium liquid injection/extraction battery according to claim 1, wherein the lithium liquid injection/extraction battery is a lithium slurry injection battery, the composite powder material of the positive electrode and the composite powder material of the negative electrode of the lithium slurry injection battery are mixed with an unreactive electrolyte to form slurry, the slurry of the positive electrode and the slurry of the negative electrode are injected into the reaction cavity of the positive electrode and the reaction cavity of the negative electrode of the lithium slurry injection battery respectively through a slurry injection device, wherein the composite powder material of the positive electrode is a composite or mixture of the positive electrode active material and a conductive component, the composite powder material of the negative electrode is a composite or mixture of the negative electrode active material and the conductive component, the unreactive electrolyte does not contain active lithium ions capable of migrating or participating in electrochemical reaction or contains one or more of anion groups capable of forming coordination with lithium ions, no electrochemical reaction takes place inside the cell.

5. the full-life-cycle operation mode of the lithium battery as claimed in claim 4, wherein the non-reactive electrolyte comprises an organic solvent and an additive, and the organic solvent is one or more of cyclic carbonate, chain carbonate, a carbonate derivative, chain ether, crown ether and a derivative thereof; the additive is one or more of a conductive additive, an additive for controlling moisture and free acid, an anti-overcharge additive, a flame retardant additive and a wetting additive.

6. The full-life-cycle operation mode of a lithium battery as claimed in claim 1, wherein the lithium battery is a bipolar lithium battery, the lithium battery comprises a plurality of bipolar electrode sheets formed by coating a positive electrode material layer and a negative electrode material layer on both sides of a bipolar plate, and a plurality of unipolar electrode sheets formed by coating a positive electrode material layer or a negative electrode material layer on one of both ends of the bipolar electrode sheets, the bipolar electrode sheets and the unipolar electrode sheets are collectively referred to as electrode sheets, when the battery is shipped, the electrode material layers and the separator layers are in a dry state without containing an electrolyte, and no electrochemical reaction occurs inside the battery.

7. The full-life-cycle operation mode of the lithium battery capable of being filled/drained according to claim 1, wherein the full-life-cycle operation mode further comprises a battery activation step, after the lithium battery capable of being filled/drained reaches a user end or a transfer station, electrolyte is filled into the lithium battery capable of being filled/drained through the liquid filling port, and the electrolyte is completely immersed into gaps among the positive electrode material layer, the negative electrode material layer and the isolation layer, so that a series of preparation operations before the battery is filled, formed, replenished, sealed, aged and debugged are completed.

8. The full lifecycle operational mode of the lithium injectable/extractable battery of claim 7, wherein the user or transfer station is a large scale energy storage power station, a distributed energy storage power station, a power frequency modulation power station, a micro grid energy storage power station, a smart grid energy storage power station, a charging station, an electric car plant, an emergency power usage area, or a communication base station area.

9. The full life cycle operational mode of a lithium rechargeable/rechargeable battery as claimed in claim 1, wherein the full life cycle operational mode further comprises a safety operation step, the safety operation step is: the lithium battery capable of being injected/pumped is in the operation process, a user side is provided with a safety protection system to carry out full-period monitoring protection on the battery, the safety protection system is communicated with the battery through a safety protection interface, when the safety protection system detects that the battery has a safety fault, the safety protection system is started, and a safety agent is injected into the battery through the safety protection interface to complete the safety operation step.

10. The full-life-cycle operation mode of the lithium battery capable of injecting/extracting liquid of claim 7, wherein the full-life-cycle operation mode further comprises a maintenance regeneration step, a maintenance regeneration system is arranged at a user terminal or a transfer station and is communicated with an interface of the battery, when the battery is detected to need maintenance regeneration, the maintenance regeneration system is started to perform liquid injection, liquid replenishment, liquid replacement, gas injection or gas exhaust on the battery, and the maintenance regeneration work is completed;

When the maintenance regeneration step is in an off-line maintenance regeneration mode, the battery can be detached from the user side and transported to a transfer station to complete maintenance regeneration work;

When the maintenance regeneration step is in an online maintenance regeneration mode, the maintenance regeneration can be directly carried out at the user side to finish the maintenance regeneration work.

11. The full life cycle operational mode of a lithium rechargeable/rechargeable battery as claimed in claim 10, wherein after the maintenance regeneration operation is completed, the battery performance is restored and the battery activation step can be resumed.

12. The full-life-cycle operation mode of the lithium battery pack as claimed in claim 1, wherein the full-life-cycle operation mode further comprises a safety abandonment treatment step, when the life of the lithium battery pack is over, the safety abandonment treatment is required to be performed on the lithium battery pack, a safety protection system is started, the electrolyte in the battery pack is discharged, and a safety agent is injected, so that the electrochemical reaction can not occur in the battery pack.

13. The full lifecycle operational mode of a lithium rechargeable/rechargeable battery as claimed in claim 1, 9 or 12, wherein the safety agent comprises: one or more of carbon dioxide, nitrogen, argon, helium, sulfur dioxide and heptafluoropropane; or one or more of alkyl phosphates, aromatic phosphates, phosphites, phosphazenes, phosphorus-halogen organic compounds, tricresyl phosphate, dimethyl methylphosphonate, hexamethylphosphoramide, tetrabromobisphenol, phosphaphenanthrene derivatives, nitrogen phosphorus alkene additives, and phosphazene compounds; or one or more of water, silicone oil, superfine dry powder extinguishing agent, foam extinguishing agent and aerosol extinguishing agent.

14. The full-life-cycle operation mode of the lithium battery as claimed in claim 1, wherein the full-life-cycle operation mode further comprises a recycling process step, and when the lithium battery is discarded due to failure, the recycling process step comprises the following steps:

s1: respectively discharging or separating the positive electrode slurry or the negative electrode slurry from a positive electrode reaction cavity and a negative electrode reaction cavity of the battery in a pneumatic, hydraulic or mechanical stripping mode;

S2: diluting the positive electrode slurry and the negative electrode slurry by using an organic solvent or water to obtain a positive electrode slurry and a negative electrode slurry to be recycled; the organic solvent is one or more of cyclic carbonate and chain carbonate;

S3: respectively reacting organic alkali without impurity metal ions with the positive electrode slurry and the negative electrode slurry to enable electrolytes in the slurries to generate soluble lithium salts, and performing solid-liquid separation in a centrifugal, filtering or distilling mode to respectively obtain a lithium salt solution and a positive electrode material and a negative electrode material to be regenerated; and adding alkali liquor into the lithium salt solution for precipitation to obtain lithium carbonate, thereby realizing the recovery of the lithium salt.

15. The full-life-cycle operation mode of the lithium battery as claimed in claim 14, wherein the full-life-cycle operation mode further comprises steps of respectively performing regeneration manufacturing on the positive electrode material and the negative electrode material to be regenerated, respectively performing lattice repair and lithium ion supplement on the positive electrode material, and performing SEI film reduction on the negative electrode material to obtain a regenerated positive electrode material and a regenerated negative electrode material.

Technical Field

The invention relates to the field of lithium batteries, in particular to a full life cycle operation mode of a lithium battery capable of being filled/pumped with liquid.

Background

Lithium batteries are receiving more and more attention because of a series of advantages such as high specific energy, high voltage, small self-discharge, good cycle performance and long service life. However, the lithium battery and the lithium battery pack are classified into the 9 th type of dangerous goods, and the dangerous goods transportation can be qualified only if the dangerous goods are strictly audited by related national functional departments and have corresponding facility equipment capable of guaranteeing safe transportation of the dangerous goods. During transport, there are strict packaging requirements: 1) all lithium batteries (groups) have to pass the UN38.3 test; 2) labeling 9 kinds of dangerous goods labels on the outer package, and labeling UN numbers; 3) the battery should be guaranteed to prevent bursting under normal transport conditions and be provided with effective measures for preventing external short circuit; 4) in a robust package, the cell should be protected from short circuits, and contact with conductive materials that can cause short circuits must be prevented within the same package.

Before the lithium battery leaves a factory, the lithium battery generally needs to be transported to each user end through processes of liquid injection, formation, capacity grading, battery grouping, electrical connection assembly with a system and the like. The transportation process is influenced by factors such as environmental temperature, air humidity, transportation vibration, impact and the like, the problems of liquid leakage, short circuit, forced discharge, electrical safety and the like of the battery are easy to occur, even the ignition and explosion of the battery are caused, and the safety of the lithium battery in the transportation process is influenced; meanwhile, the falling or loosening of the electrode material can also cause the problems of battery capacity reduction, cycle life attenuation and the like.

Meanwhile, when the lithium battery needs to be scrapped at the end of service life, electrolyte, active materials and the like are left in the battery, the electrolyte can be leaked in the battery in the transportation process, the electrochemical reaction can still occur in the battery, and the battery has the defects of gas expansion, combustion, explosion and the like caused by the short circuit of an inner isolation layer or the short circuit of an external electrode.

Therefore, in the transportation process of the battery, how to ensure that the performance of the battery is not affected is avoided, meanwhile, the problems of the safe transportation are avoided, the battery can be quickly and conveniently maintained and regenerated in the use process, the battery can be safely transported to a recycling station after being scrapped, and the problems are difficult to face by the battery, especially a large container type lithium battery energy storage system device. The novel lithium battery technology needs to be developed, and a series of safe operation steps of battery delivery, safe centralized transportation, safe operation, maintenance regeneration, safe scrapping and the like in a whole life cycle are realized by matching with an operation mode of safe operation.

Disclosure of Invention

Aiming at the problems, the invention provides a full-life-cycle operation mode of a liquid injection/extraction lithium battery, which combines the characteristics of the liquid injection/extraction lithium battery, and does not contain electrolyte in a battery isolation layer when the battery leaves a factory, so that the electrochemical reaction does not occur in the battery when the battery is transported to a user terminal or a transfer station, and the battery can be safely transported as a non-dangerous article; meanwhile, when the service life of the battery needs to be abandoned, electrolyte in the battery is pumped out through the liquid pumping port and is injected with the safety agent, so that the abandoned battery does not generate electrochemical reaction in the process of being transported to a recycling station, and the abandoned battery can be safely transported as a non-dangerous article. In the invention, the full life cycle operation mode of the liquid injection/extraction lithium battery comprises a series of steps of battery delivery, safe transportation, battery activation, safe operation, maintenance regeneration/safe scrapping, safe transportation, recovery treatment, regeneration manufacturing and the like.

The technical scheme provided by the invention is as follows:

A full life cycle operation mode of a lithium battery capable of being injected/extracted comprises a safe transportation step, wherein in the safe transportation process, active lithium ions capable of migrating or participating in electrochemical reaction are not contained in a separation layer of the lithium battery capable of being injected/extracted, or one or more anionic groups capable of forming coordination with the lithium ions are not contained in the separation layer, so that the lithium battery capable of being injected/extracted can be safely transported to a user end or a transfer station as a non-dangerous article when the lithium battery leaves a factory, and then electrolyte is injected into the lithium battery through a liquid injection port and/or a liquid extraction port to activate the lithium battery capable of being injected/extracted; or the electrolyte in the battery can be discharged through the liquid injection port and/or the liquid extraction port when the battery needs to be scrapped at the end of the service life, so that the electrochemical reaction can not occur in the battery, and the liquid injection/extraction lithium battery can be safely transported to a recycling station as a non-dangerous article when the battery is recycled.

The active lithium comprises soluble lithium salt and the like, and the anion group forming coordination with lithium ions comprises one or more of ClO ₄ ^- , AsF ₆ ^- , PF ₆ ^- , LiBF ₄ ^- , CF ₃ SO ₃ ^- and N (SO ₂ CF ₃) ₂ ^- .

Preferably, the lithium battery capable of injecting/extracting liquid can inject a safety agent into the battery through the liquid injection port and/or the liquid extraction port in order to increase the transportation safety after the electrolyte in the battery is discharged through the liquid injection port and/or the liquid extraction port when the life of the battery is ended and needs to be discarded, and the safety agent can comprise: one or more of carbon dioxide, nitrogen, argon, helium, sulfur dioxide, heptafluoropropane and the like, or the safener can be one or more of alkyl phosphate, aromatic phosphate, phosphite, phosphazene, phosphorus-halogen organic compound, tricresyl phosphate, dimethyl methyl phosphate, hexamethylphosphoramide, tetrabromobisphenol, phosphaphenanthrene derivative, nitrogen phosphorus alkene additive, phosphazene compound and the like; or the safety agent is water, silicon oil, superfine dry powder extinguishing agent, foam extinguishing agent, aerosol extinguishing agent and the like.

in the present invention, the liquid injection/extraction lithium battery is preferably a liquid injection type lithium slurry battery, a slip casting type lithium slurry battery or a bipolar lithium battery. It should be noted that the lithium rechargeable/rechargeable battery is not limited to the three preferred batteries, that is, any transportation method capable of activating the battery by injecting electrolyte after transportation to a user end or a transfer station and discharging the electrolyte in the battery to ensure safe transportation when disposal is performed is within the scope of the present invention.

Preferably, the liquid injection/extraction lithium battery is a liquid injection lithium slurry battery, and the positive plate of the liquid injection lithium slurry battery contains dry positive active conductive particles, wherein the positive active conductive particles are a compound or a mixture of a positive active material and a conductive component; the negative plate of the liquid injection type lithium slurry battery contains dry negative active conductive particles, wherein the negative active conductive particles are a compound or a mixture of a negative active material and a conductive component. The above dry state includes powder stacking, tablet pressing or block pressing. An isolating layer is arranged between the positive plate and the negative plate, and when the liquid injection type lithium slurry battery leaves a factory, electrolyte is not contained in the dry positive active conductive particles and the dry negative active conductive particles, and electrochemical reaction does not occur in the battery.

Preferably, the liquid injection/extraction lithium battery is a slip casting lithium slurry battery, a positive electrode composite powder material and a negative electrode composite powder material of the slip casting lithium slurry battery are respectively mixed with the non-reactive active electrolyte to form a slurry state, the positive electrode slurry and the negative electrode slurry are respectively injected into a positive electrode reaction cavity and a negative electrode reaction cavity of the slip casting lithium slurry battery through a slip casting device, wherein the positive electrode composite powder material is a composite or mixture of the positive electrode active material and the conductive component, the negative electrode composite powder material is a composite or mixture of the negative electrode active material and the conductive component, and no electrochemical reaction occurs inside the battery.

In other words, the electrolyte without reactivity comprises an organic solvent and an additive, wherein the organic solvent can be one or more of cyclic carbonate (EC, PC, BC), chain carbonate (DMC, DEC, EMC), derivatives of carbonate (mainly EC, halogenated derivatives of PC such as F ₃ C-EC, Cl-EC, and the like), chain ether (DMM, DME, DMP, DG), crown ether and derivatives thereof, and the additive can be one or more of a conductive additive, an additive for controlling moisture and free acid, an anti-overcharge additive, a flame retardant additive, a wetting additive, and the like.

After the slip casting type lithium slurry battery is safely transported to a user side or a transfer station, electrolyte is injected into the battery through a battery liquid injection port and/or a liquid extraction port, the injected electrolyte can be electrolyte with high lithium salt concentration, the lithium salt concentration of the electrolyte without lithium salt injected in the early stage of neutralization can be neutralized, and the lithium salt concentration can be calculated according to needs.

Preferably, the lithium battery capable of injecting/extracting liquid is a bipolar lithium battery, the bipolar lithium battery comprises a plurality of bipolar electrode plates formed by respectively coating a positive electrode material layer and a negative electrode material layer on two sides of a bipolar plate, the bipolar electrode plates are mutually overlapped, and a unipolar electrode plate is positioned on one of two ends of the plurality of bipolar electrode plates which are mutually overlapped and coated with the positive electrode material layer or the negative electrode material layer, the bipolar electrode plates and the unipolar electrode plates are collectively called electrode plates, and an isolation layer is arranged between the electrode plates. When the bipolar lithium battery leaves a factory, the electrode material layer and the isolating layer are in a dry state without containing electrolyte, and no electrochemical reaction occurs inside the battery.

Furthermore, the full life cycle operation mode of the invention also comprises a battery activation step, when the lithium battery capable of injecting/extracting liquid reaches a user end or a transfer station, the electrolyte is injected into the lithium battery capable of injecting/extracting liquid through the liquid injection port and/or the liquid extraction port, and is completely immersed into the gap between the electrode material layer and the isolation layer, so that the liquid injection is completed, the lithium battery capable of injecting/extracting liquid is activated, and a series of battery preparation works such as formation, liquid supplement, sealing, aging, debugging and the like are carried out before operation.

Preferably, the lithium battery capable of injecting/extracting liquid is further provided with a maintenance regeneration interface and a safety protection interface, wherein the maintenance regeneration interface can also be used as a liquid injection/extraction port for injecting and/or extracting electrolyte.

Further, the full life cycle operation mode of the invention also comprises a safe operation step, wherein the safe operation is that in the battery operation process, a safe protection system is arranged at a user side to carry out full cycle monitoring protection on the battery, the safe protection system is communicated with a safe protection interface of the battery, when the safe protection system detects that the battery has a safe fault, the safe protection system is started, and a safety agent is injected into the battery through the safe protection interface, so that the battery is prevented from generating faults such as thermal runaway, combustion, explosion and the like, and the safe operation step is completed.

Furthermore, the full life cycle operation mode of the invention also comprises a maintenance regeneration step, wherein a maintenance regeneration system is arranged at the user terminal or the transfer station and is communicated with a maintenance regeneration interface of the battery, and when the battery is detected to be required to be maintained and regenerated, the maintenance regeneration system is started to perform liquid injection, liquid supplementation, liquid replacement, gas injection or gas exhaust on the battery, so as to complete the maintenance regeneration work.

In the invention, the maintenance regeneration steps can be divided into off-line maintenance regeneration and on-line maintenance regeneration according to different clients. When the user side or the transfer station is a large-scale energy storage power station, a distributed energy storage power station, a power frequency modulation power station, a micro-grid energy storage power station, an intelligent power grid energy storage power station, a charging station and the like, the user side can be directly maintained and regenerated to complete online maintenance and regeneration work; when the user side is an electric automobile factory, an emergency power supply use area or a communication base station area and the like, the battery can be detached from the user side and transported to a transfer station to complete off-line maintenance regeneration work.

According to the invention, after the maintenance and regeneration work is finished, the battery performance is repaired and can be normally used, and the battery activation step can be carried out again. The battery can effectively improve the service performance of the battery and prolong the service life of the battery through maintenance and regeneration.

Further, the full life cycle operation mode of the invention also comprises a safe scrapping treatment step, when the service life of the liquid injection/extraction lithium battery is ended, the liquid injection/extraction lithium battery needs to be subjected to safe scrapping treatment, at the moment, the safety protection system is started, the electrolyte in the battery is discharged, and a safety agent is injected, so that the electrochemical reaction can not occur in the battery, and the battery is safely transported to a recovery station. Therefore, on one hand, the problem of electrolyte leakage generated in the transportation process due to long-term use of the battery is avoided; on the other hand, the injection of the safety agent prevents the electrochemical reaction in the battery, and avoids the safety faults of the battery, such as gas expansion, combustion, explosion and the like caused by the short circuit of the inner isolation layer or the external electrode.

further, the full life cycle operation mode of the invention also comprises a recovery processing step, when the lithium battery capable of injecting/extracting liquid is invalid and scrapped, the recovery processing work is carried out, and the recovery processing comprises the following steps:

s1: respectively discharging or separating the positive electrode slurry or the negative electrode slurry from a positive electrode reaction cavity and a negative electrode reaction cavity of the battery in a pneumatic, hydraulic or mechanical stripping mode;

S2: diluting the positive electrode slurry and the negative electrode slurry by using an organic solvent or water to obtain a positive electrode slurry and a negative electrode slurry to be recycled; the organic solvent is one or more of cyclic carbonate (EC, PC, BC) and chain carbonate (DMC, DEC, EMC);

S3: respectively reacting organic alkali without impurity metal ions with the positive electrode slurry and the negative electrode slurry to enable electrolytes in the slurries to generate soluble lithium salts, and performing solid-liquid separation in a centrifugal, filtering or distilling mode to respectively obtain a lithium salt solution and a positive electrode material and a negative electrode material to be regenerated; and adding alkali liquor into the lithium salt solution for precipitation to obtain lithium carbonate, thereby realizing the recovery of the lithium salt.

And respectively regenerating the positive electrode material and the negative electrode material to be regenerated, respectively carrying out lattice repair and lithium ion supplement on the positive electrode material, and reducing an SEI (solid electrolyte interphase) film of the negative electrode material to obtain the regenerated positive electrode material and the regenerated negative electrode material.

By recycling the electrode material, the battery cost and the energy material are saved, and a complete closed-loop ecological ring is formed for the operation of the battery.

The invention has the advantages that:

1) In the transportation process from the battery delivery to the user end, the battery does not contain electrolyte or electrolyte with reaction activity, so that the electrochemical reaction does not occur in the battery in the transportation process, and the battery can be safely transported as a non-hazardous substance;

2) when the service life of the liquid injection/extraction lithium battery is ended and needs to be scrapped, residual electrolyte in the battery can be discharged and a safety agent is injected, so that the battery can be safely transported to a recycling station, and the problem of electrolyte leakage in the transportation process caused by long-term use of the battery is avoided; on the other hand, the injection of the safety agent ensures that the electrochemical reaction does not occur in the battery, and the safety faults of the battery, such as gas expansion, combustion, explosion and the like caused by the short circuit of the inner isolation layer or the short circuit of the external electrode are avoided;

3) The full life cycle operation mode of the liquid injection/extraction lithium battery comprises a series of steps of battery delivery, safe transportation, battery activation, safe operation, maintenance regeneration, safe scrapping, safe transportation, recovery treatment, regeneration manufacturing and the like.

Drawings

FIG. 1 is a schematic view of a full life cycle operation mode of a liquid-injected lithium slurry battery according to an embodiment of the present invention;

Fig. 2 is a schematic view of a full life cycle operation mode of a lithium-ion battery according to a second embodiment of the present invention;

Fig. 3 is a schematic view of a full life cycle operation mode of a triple bipolar lithium battery according to an embodiment of the invention.

Detailed Description

the invention will be further explained by embodiments in conjunction with the drawings.