WO2018184566A1 - 一种锂浆料电池系统 - Google Patents

一种锂浆料电池系统 Download PDF

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Publication number
WO2018184566A1
WO2018184566A1 PCT/CN2018/081917 CN2018081917W WO2018184566A1 WO 2018184566 A1 WO2018184566 A1 WO 2018184566A1 CN 2018081917 W CN2018081917 W CN 2018081917W WO 2018184566 A1 WO2018184566 A1 WO 2018184566A1
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WIPO (PCT)
Prior art keywords
opening
port
gas
top cover
lithium
Prior art date
Application number
PCT/CN2018/081917
Other languages
English (en)
French (fr)
Inventor
陈永翀
何颖源
张晓虎
谢晨
张彬
王玉伟
张艳萍
Original Assignee
北京好风光储能技术有限公司
河北美浆电池有限公司
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
Priority claimed from CN201710224927.7A external-priority patent/CN108695485B/zh
Priority claimed from CN201710710934.8A external-priority patent/CN109411690B/zh
Priority claimed from CN201710997294.3A external-priority patent/CN109698311B/zh
Application filed by 北京好风光储能技术有限公司, 河北美浆电池有限公司 filed Critical 北京好风光储能技术有限公司
Priority to US16/496,584 priority Critical patent/US11233276B2/en
Publication of WO2018184566A1 publication Critical patent/WO2018184566A1/zh

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/05Accumulators with non-aqueous electrolyte
    • H01M10/052Li-accumulators
    • H01M10/0525Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • 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
    • H01M10/4214Arrangements for moving electrodes or electrolyte
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/60Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
    • H01M50/691Arrangements or processes for draining liquids from casings; Cleaning battery or cell casings
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00Fuel cells; Manufacture thereof
    • H01M8/18Regenerative fuel cells, e.g. redox flow batteries or secondary fuel cells
    • 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
    • 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
    • Y02E60/30Hydrogen technology
    • Y02E60/50Fuel cells

Definitions

  • the present invention relates to the field of lithium slurry batteries, and in particular to a lithium slurry battery system that can be maintained and regenerated.
  • Lithium slurry battery is a new type of high-energy battery.
  • the conductive paste inside the electrode sheet contains a certain proportion of conductive particles suspended or precipitated in the electrolyte. When the battery is subjected to external impact or vibration, the conductive particles are not bonded due to this part. Fixed so that it can move through the electrolyte and form a dynamic conductive network.
  • the conductive paste in the lithium paste battery can avoid the problem of battery capacity drop and cycle life decay caused by the peeling or loosening of the electrode material of the conventional lithium battery.
  • the lithium paste battery may have the following problems during long-term use: (1) The side reaction generated during the use of the lithium slurry battery may cause the electrolyte to gradually fail, and the electrode active material or even the surface of the current collector may be generated due to side reactions. The SEI film will continue to thicken, which will lead to an increase in the internal resistance of the lithium paste battery and a decrease in cycle life. (2) The side reaction generated during the use of the lithium slurry battery consumes the electrolyte, resulting in the internal reaction of the battery.
  • the present invention provides a lithium slurry battery system including a lithium slurry battery and a maintenance regeneration device for a lithium slurry battery.
  • the lithium slurry battery and the maintenance regeneration device can be conveniently docked through the top cover docking device of the lithium slurry battery and the device docking device for maintaining the regeneration device, and the liquid of the gas or liquid storage tank for maintaining the gas storage tank of the regeneration device Injecting the lithium slurry battery into the lithium slurry battery or discharging the gas or liquid in the lithium slurry battery to the gas recovery storage tank or the liquid recovery storage tank of the maintenance regeneration device, so that the lithium slurry battery can be injected, refilled, and exchanged. Gas injection and exhaust operations, etc., to improve battery performance, safety and sealing, extend battery life, and achieve maintenance and regeneration of lithium slurry batteries.
  • a lithium slurry battery system including a lithium slurry battery and a maintenance regeneration device for a lithium slurry battery
  • the lithium slurry battery comprises: a casing comprising a top cover and a lower casing; a battery core, the battery core is received in the casing; a top cover docking device, the top cover docking device is disposed on the top cover
  • the top cover docking device is provided with a top cover first port and a top cover second port.
  • the maintenance regeneration device comprises: a gas storage tank and a liquid storage tank, respectively, for storing gas and liquid; a gas recovery storage tank and a liquid recovery storage tank, the gas recovery storage tank and the liquid recovery storage
  • the tanks are respectively used for storing gas and liquid recovered from the lithium slurry battery;
  • the equipment docking device is provided with the first port of the device and the second port of the device, and the first port of the top cover can be docked with the first port of the device and the top
  • the cover second port can be docked with the second port of the device for injecting liquid in the gas or liquid storage tank of the gas storage tank into the lithium slurry battery or discharging the gas or liquid in the lithium slurry battery to the gas recovery storage tank Or liquid recovery in the tank.
  • the maintenance and regenerative operation of the lithium slurry battery can be quickly and easily performed by the maintenance and regeneration device through the convenient docking of the top cover docking device and the device docking device, and the maintenance and regeneration device can quickly and easily perform the liquid replacement, rehydration, gas injection, exhaust, and the like.
  • the terms “first”, “second” and the like are used herein for convenience of description and do not serve any limitation.
  • the cell of the lithium paste battery is composed of a plurality of positive and negative electrode sheets which are laminated in a cross section and an isolation layer between the positive electrode and the negative electrode.
  • a positive electrode slurry may be disposed in the positive electrode sheet, and a negative electrode slurry or a lithium-containing metal body may be disposed in the negative electrode sheet, wherein the non-bonded fixed positive electrode active conductive particles and/or the non-bonded fixed negative electrode are stored.
  • the lithium conductive particles can move in the electrolyte and form a positive electrode slurry and/or a negative electrode slurry, respectively.
  • the mass ratio of the positive electrode active conductive particles to the positive electrode slurry may be 10% to 90%, preferably 15% to 80%, and the mass ratio of the negative electrode lithium storage conductive particles to the negative electrode slurry may be 10% to 90%, preferably It is 15% to 80%.
  • the average particle diameter of the positive electrode active conductive particles may be 0.05 ⁇ m to 500 ⁇ m, and the mass ratio of the positive electrode active material to the conductive agent may be 20 to 98:80 to 2; the average particle diameter of the negative electrode lithium storage conductive particles may be 0.05 ⁇ m to 500 ⁇ m, and the negative electrode is stored.
  • the mass ratio of the lithium active material to the conductive agent may be from 20 to 98:80 to 2.
  • the positive electrode active material may be lithium iron phosphate, lithium manganese phosphate, lithium silicate, lithium iron silicate, sulfate compound, sulfur carbon composite, sulfur element, titanium sulfur compound, molybdenum sulfur compound, iron sulfur compound, lithium manganese doped.
  • the negative electrode lithium storage active material may be one or more of an aluminum-based alloy, a silicon-based alloy, a tin-based alloy, a ruthenium-based alloy, a lithium titanium oxide, a lithium silicon oxide, a lithium metal powder, and graphite.
  • the conductive agent may be one or more of carbon black, ketjen black, graphene, carbon nanotubes, carbon fibers, amorphous carbon, metal conductive particles, and metal conductive fibers.
  • the material of the metal conductive particles or fibers may be aluminum, stainless steel or silver or the like.
  • the material of the lithium-containing metal body may be a metal lithium or a lithium-based alloy, and the thickness of the lithium-containing metal body is preferably 0.001 mm to 2 mm.
  • the lithium-containing metal body may have a single layer structure or a multilayer structure.
  • the lithium-based alloy may be Li-Al, Li-Si, Li-Mg, Li-Sn, Li-Bi, Li-Sb, etc., and may be a binary, ternary or multi-element alloy, and the alloy may include Mg, Ca, Al, Si, Ge, Sn, Pb, As, Sb, Bi, Pt, Ag, Au, Zn, Cd, Hg, etc., which are capable of solid solution and/or addition reaction with lithium, wherein the content of non-lithium elements is not More than 50%.
  • the materials of the respective layers may be the same or may be different.
  • the top cover first port and the top cover second port of the top cover docking device are respectively connected with the device first port and the device second port of the device docking device.
  • the first port of the top cover may include a first opening and a first opening and closing mechanism, the first opening penetrating the top cover, and the first opening and closing mechanism is connected to the first opening to form a fluid passage in the first opening or Cutting the fluid passage in the first opening;
  • the top cover second port may include a second opening and a second opening opening and closing mechanism, the second opening penetrates the top cover, and the second opening opening and closing mechanism is connected to the second opening for Forming a fluid passage in the second opening or cutting the fluid passage in the second opening;
  • the first port of the device may include a first mounting hole and a first triggering mechanism, the first mounting hole corresponding to the position of the first opening, the first trigger mechanism is connected
  • the second port of the device may include a second mounting hole and a second triggering mechanism
  • first opening and closing mechanism and the second opening and closing mechanism are normally in a closed state, and the fluid passage can be formed only after the first opening and closing mechanism and the second opening and closing mechanism are opened by the triggering mechanism.
  • the positions, structures, and the like of the first trigger mechanism and the second trigger mechanism are respectively set corresponding to the first opening and closing mechanism and the second opening and closing mechanism.
  • the top cover docking device may further include a top cover docking device joint portion extending from the top cover and continuously surrounding the outer wall of the top cover first port and the top cover second port at the top cover docking device joint portion A first recess is disposed therein and a first seal is disposed in the first recess, and the first recess may be disposed on a top surface or a sidewall of the joint of the cover docking device.
  • the device docking device may further include a device docking device engagement portion that is continuous around the outer wall of the device first port and the device second port and that is engageable or disengageable with the top cover docking device engagement portion.
  • top cover docking device joint portion and the device docking device joint portion may each be a continuous outer wall. When the top cover docking device is docked with the device docking device, the top cover docking device joint portion and the device docking device joint portion form a first opening.
  • the chambers of the closing mechanism, the second opening and closing mechanism, the first triggering mechanism and the second triggering mechanism and the sealing of the internal cavity formed by the joint of the cap docking device and the joint of the device docking device and the outside are sealed by the sealing structure. Since the operation of liquid filling, liquid exchange, qi, and exhaust of the lithium slurry battery has certain requirements on the content of oxygen and water vapor, it can be joined by the top cover docking device without using an auxiliary device such as a vacuum box. The cavity formed by the joint of the device and the device docking device is isolated from the outside.
  • the chamber may be evacuated, injected with an inert gas or a flame retardant gas through a first port/second port of the device or a separate interface provided on the device docking device to further ensure the safety of the maintenance regeneration operation.
  • a first recessed inner wall and a second recess arranged around the outer side of the plug inner wall may be provided on the first trigger mechanism and the second trigger mechanism, respectively, and the second recess may be provided in the second recess a second sealing member; a first opening opening and closing mechanism and a second opening opening and closing mechanism are respectively provided with a plug outer wall and a boss portion located in the inner hole of the plugging outer wall, and the protruding portion can be provided on the boss portion Three seals.
  • the plugging outer wall of the first opening and closing mechanism and the second opening and closing mechanism can be inserted into the second groove and form a seal by the second sealing member, and the plugging inner wall of the first triggering mechanism and the second triggering mechanism can abut
  • the boss portion and the seal are formed by the third seal, so that multiple seals can be formed in the top cover docking device and the device docking device.
  • the butt seal of the top cover docking device joint and the device docking device joint and the docking seal of the trigger mechanism and the opening and closing mechanism may be synchronized or stepwise.
  • the trigger mechanism and the opening and closing mechanism are butt-sealed while the top cover docking device joint and the device docking device joint portion are butt-sealed, or are triggered after the top cover docking device joint and the device docking device joint portion are butt-sealed.
  • the mechanism and the opening and closing mechanism perform a butt sealing.
  • connection manner of the device docking device joint portion and the top cover docking device joint portion may be a screw connection, a plug connection, a snap connection, or the like.
  • the device docking device joint and the cap docking device joint are cylindrical or cylindrical and have the same outer diameter, and the device docking device joint and the cap docking device joint have external threads for docking at the device.
  • the outer side of the device joint or the top joint docking device joint may be provided with a connecting ring and the connecting ring has an internal thread, and the rotating connecting ring can move the connecting ring to the joint of the device docking device joint portion and the top cover docking device joint portion and A connection is made to the device docking device joint and the top cover docking device joint.
  • connection or disconnection of the joint of the device docking device and the joint of the top cover docking device can be achieved by the positional movement of the connecting ring.
  • the device docking device engagement portion has a recess having a shape that matches the shape of the top cover docking device engagement portion such that the recess portion can be mated with the top cover docking device engagement portion, Thereby, a connection is made to the device docking device joint and the top cover docking device joint.
  • the cap docking device joint is a vertical wall having a thickness, and the width and shape of the recess of the device docking device joint correspond to the thickness and shape of the vertical wall so that the vertical wall can be tightly inserted
  • the recess is formed in the recess.
  • the inner surface of the joint portion of the device docking device is provided with a card/card slot
  • the outer surface of the joint portion of the top cover docking device is provided with a card slot/card member
  • the card member and the card slot can be engaged to
  • the device docking device engagement portion and the top cover docking device engagement portion form a connection.
  • the card member may be a retractable card member or the card member is rotatable relative to the card slot to form a snap fit.
  • the manner of connecting the device docking device joint portion to the top cover docking device joint portion is not limited to the above.
  • the triggering mechanism and the opening and closing mechanism of the device docking device and the top cover docking device may be a thimble, labyrinth, electromagnetic or other form of mechanism.
  • the first trigger mechanism and the second trigger mechanism may respectively include a movable top block
  • the first opening and closing mechanism and the second opening and closing mechanism may respectively include a thimble, a stopper and a spring.
  • the top block can push the thimble and the stopper and form a fluid passage in the first opening and closing mechanism and the first trigger mechanism and/or form a fluid passage in the second opening and closing mechanism and the second trigger mechanism, and the thimble can be forced by the spring And the stopper resets and cuts off the fluid passage.
  • the top block in the first trigger mechanism and the second trigger mechanism can be activated by a control device or manually, and the first trigger mechanism and the second trigger mechanism can be activated separately or simultaneously.
  • the thimbles of the first opening and closing mechanism and the second opening and closing mechanism are fixedly connected with the stopper and the stopper is fixedly connected with the spring, and the stopper can withstand or leave the convexity provided in the inner hole of the opening and closing mechanism.
  • the table is used to close or open the inner hole in the opening and closing mechanism.
  • the thimble drives the stop away from the boss and further compresses the spring, and at the same time forms a fluid passage; when the top piece is retracted, the spring pushes the stop and the thimble to reset and bears against the convexity in the inner hole of the opening and closing mechanism
  • the table section cuts off the fluid passage.
  • the first trigger mechanism and the second trigger mechanism may each comprise a rotatable trigger mechanism cylinder.
  • the trigger mechanism cylinder is provided with a trigger mechanism passage and a plugging portion, and the first opening and closing mechanism and the second opening and closing mechanism can be provided with a rotating opening and closing mechanism cylinder and a fixed opening and closing mechanism cylinder, and the rotating opening and closing mechanism cylinder
  • the body is provided with a first opening and closing mechanism passage and an insertion hole, and the fixed opening and closing mechanism cylinder is provided with a second opening and closing mechanism passage.
  • the trigger mechanism passage is in fluid communication with the first opening and closing mechanism passage when the insertion portion is inserted into the insertion hole, and the trigger mechanism cylinder can drive the rotation of the rotation opening and closing mechanism cylinder to cause the trigger mechanism passage and the first opening and closing mechanism passage Capable of being in fluid communication with the second opening and closing mechanism passage and forming a fluid passage; and the trigger mechanism cylinder can drive the rotation opening and closing mechanism cylinder to continue to rotate, so that the trigger mechanism passage and the first opening and closing mechanism passage can open and close with the second opening
  • the mechanism path is misaligned and the fluid passage is severed.
  • the top cover docking device is provided with an anti-reverse connection portion, and the anti-reverse connection portion is convex or concave.
  • the convex or concave anti-reverse portion of the top cover docking device can cooperate with the concave or convex anti-reverse portion of the device docking device to prevent the first opening and closing mechanism and the second opening
  • the closing mechanism is reversely connected to the first triggering mechanism and the second triggering mechanism; or the top cover docking device is provided with a magnet and the magnets of opposite polarities are provided at corresponding positions of the device docking device, and the magnets corresponding to each other are attracted to each other to prevent the first
  • the top cover docking device may further be provided with a guiding column, and the device docking device may be provided with a guiding hole, and the top cover docking device and the device docking device can be positioned by inserting the guiding column into the guiding hole to prevent the top cover docking device joint portion and device
  • the docking device joint rotates relative to each other.
  • a plurality of sets of guiding columns and guiding holes may be provided, wherein the shape of one or more sets of guiding columns and guiding holes is different from that of the other sets of guiding columns and guiding holes, thereby preventing the reverse connection while guiding .
  • the top cover docking device may also be provided with a top cover data transmission port, and the top cover data transmission port is connected to the detection device of the lithium slurry battery.
  • the detecting device provided in the lithium slurry battery can detect data such as electrolyte level and pressure inside the lithium slurry battery.
  • the device docking device may also be provided with a device data transmission port, and the device data transmission port and the device docking device control device are connected through a data line or through a wireless manner.
  • the top cover data transmission port can be docked with the device data transmission port for transmitting the data detected by the detecting device to the control device, thereby maintaining the liquid level during the regeneration process. , air pressure, etc. to control.
  • the docking operation method of the lithium slurry battery and the maintenance regeneration device comprises the following steps: (1) a joint interface of the device docking device of the device docking device for maintaining the regeneration device and a top cover docking device joint portion of the top cover docking device of the lithium slurry battery Aligning and sealing the connection, respectively aligning and sealingly connecting the top cover first port and the top cover second port of the top cover docking device with the device first port and the device second port of the device docking device; (2) by manual or The control device activates a trigger mechanism of the device docking device, forms a fluid passage inside the trigger mechanism and the opening and closing mechanism; (3) controls a fluid valve of the maintenance regeneration device, and refills, changes, and injects the lithium slurry battery through the fluid passage Or exhausting, closing the fluid valve of the maintenance regeneration device; (4) closing the fluid passage formed in the interior of the trigger mechanism and the opening and closing mechanism by resetting the trigger mechanism; (5) docking the device docking device from the top cover Take it down.
  • the maintenance regeneration apparatus can include a host and equipment docking device, wherein the gas storage tank, the liquid storage tank, the gas recovery storage tank, the liquid recovery storage tank, and the corresponding fluid lines and control valves are disposed within the housing of the main unit.
  • the gas recovery storage tank for maintaining the regeneration device is connected to the first port of the device through the first gas pipe and the first main pipe or the gas recovery storage tank for maintaining the regeneration device is connected to the second port of the device through the first gas pipe and the second main pipe
  • the gas storage tank for maintaining the regeneration device is connected to the first port of the device through the second gas pipe and the first main pipe
  • the liquid recovery storage tank for maintaining the regeneration device is connected to the second port of the device through the first liquid pipe and the second main pipe, and is maintained
  • the liquid storage tank of the regeneration device is connected to the second port of the device through the second liquid line and the second manifold or the liquid storage tank of the maintenance regeneration device is connected to the first port of the device through the second liquid line and the first manifold.
  • the first port of the device can be connected to one or more of a gas storage tank, a gas recovery storage tank, and a liquid storage tank for inputting gas, inputting liquid or recycling the lithium slurry battery via the first port of the top cover.
  • the second port of the device may be connected to one or more of a liquid storage tank, a liquid recovery storage tank, and a gas recovery storage tank for inputting liquid, recovering gas or recovering liquid to the lithium slurry battery via the second port of the top cover.
  • the connection mode between the device port and the storage tank can be flexibly determined according to actual needs.
  • the maintenance regeneration device may further include: a first gas control valve disposed on the first gas pipeline and capable of causing gas in the lithium slurry battery to pass through the first port of the device, the first manifold, and the first The gas line enters the gas recovery storage tank via the second port of the device, the second manifold, and the first gas line; the second gas control valve is disposed on the second gas line and enables the gas storage tank The gas in the lithium slurry battery enters the lithium slurry battery through the second gas pipeline, the first manifold, and the first port of the device; the first liquid control valve is disposed on the first liquid pipeline and enables the lithium slurry The liquid in the battery enters the liquid recovery storage tank via the second port of the device, the second manifold, and the first liquid line; the second liquid control valve is disposed on the second liquid line and enables the liquid storage tank The liquid in the liquid enters the lithium slurry battery via the second liquid line, the second manifold, the second port of the device, or via the second liquid line, the first
  • the materials for the gas storage tank, the liquid storage tank, the gas recovery storage tank and the liquid recovery storage tank for maintaining the regeneration equipment may be metal materials or insulation resistant electrolyte materials, the metal materials may be stainless steel, aluminum, etc., and the insulation resistant electrolyte materials may be Polytetrafluoroethylene, polypropylene, polyethylene, etc.
  • the gas storage tank stores a dry gas, and the dry gas may be one or a mixture of nitrogen, air, an inert gas, and sulfur hexafluoride.
  • the dry gas has a water content of ⁇ 1 ppm.
  • the first gas line, the second gas line, the first liquid line, the second liquid line, the first main tube and the second main tube may be a rigid tube or a flexible tube, and the material thereof may be, for example, stainless steel, aluminum, poly 4 Fluorine, polypropylene, polyethylene, etc.
  • the first gas control valve, the second gas control valve, the first liquid control valve, and the second liquid control valve may be flow control valves, preferably the control valve is a one-way valve.
  • the liquid storage tank can be only an electrolyte storage tank.
  • the liquid storage tank may include a plurality of storage tanks, for example, a first electrolyte storage tank, a cleaning liquid storage tank, and a second electrolyte storage tank, wherein the first electrolyte storage tank stores the electrolyte and the cleaning liquid storage tank
  • the medium storing the cleaning liquid and the second electrolyte storage tank stores an electrolyte containing the SEI film stabilization and repair additive.
  • the first electrolyte storage tank, the cleaning fluid storage tank, and the second electrolyte storage tank are respectively connectable to the second liquid pipeline through a switching valve or a plurality of liquid control valves.
  • the electrolyte is a mixture of a lithium salt and a solvent
  • the lithium salt is lithium hexafluorophosphate
  • the solvent may be ethylene carbonate (EC), diethyl carbonate (DEC), dimethyl carbonate (DMC) or ethyl methyl carbonate (EMC);
  • the cleaning solution may be an ester or a carbonate derivative, an ether or a ketone.
  • the ester solvent includes ethylene carbonate, propylene carbonate, dimethyl carbonate, diethyl carbonate, ethyl methyl carbonate, methyl propyl carbonate, methyl formate, ethyl formate, methyl acetate, and ethyl acetate.
  • the derivatives include vinyl chlorocarbonate, vinyl fluorocarbonate, propylene difluorocarbonate and propylene trifluorocarbonate;
  • ether solvents include dimethoxymethane, 1,2-dimethoxyethane, tetrahydrofuran , dimethyltetrahydrofuran, diethylene glycol dimethyl ether, tetramethyl-1,3-dioxolane, etc.; ketone solvents include acetone and the like.
  • the SEI film stabilization and repair additive may be used in combination with one or more of the following additives: a sulfinyl additive such as vinyl sulfite, propylene sulfite, dimethyl sulfite, diethyl sulfite.
  • a sulfinyl additive such as vinyl sulfite, propylene sulfite, dimethyl sulfite, diethyl sulfite.
  • sulfonate additives such as 1,3-propane sultone, 1,4-butane sultone, ethyl methane sulfonate and butyl sulfonate; a vinylene carbonate; an anisole or a halogenated derivative thereof; a halogenated organic substance such as a halogenated EC, a trifluoroethylphosphonic acid, a methyl chloroformate, a bromobutyrolactone, and a fluoroacetoxyethane; Inorganic additives such as sulfur dioxide, carbon dioxide, lithium carbonate, and the like.
  • the liquid storage tank may further include an SEI membrane reactive type destructive agent storage tank.
  • the SEI membrane reaction type destructive agent is, for example, an active hydrogen-containing protic solvent such as an acid, an alcohol or an amine.
  • the maintenance regeneration apparatus may include a vacuuming device disposed in the first gas line and capable of evacuating the lithium slurry battery via the first port of the device or the second device port.
  • the vacuum pump can be used to pump the gas in the lithium slurry battery to the gas via the first port of the top cover of the lithium slurry battery and the first port of the device for maintaining the regeneration device.
  • the storage tank may be recovered; alternatively, the gas in the lithium slurry battery may be pumped into the gas recovery storage tank via the top port of the lithium slurry battery and the second port of the equipment for maintaining the regeneration equipment using a vacuuming device.
  • the maintenance regeneration apparatus may further include a first liquid pump disposed in the first liquid line and capable of extracting liquid in the lithium slurry battery via the second port of the apparatus.
  • the first liquid pump can be used to pump the liquid in the lithium slurry battery to the second port of the lithium slurry battery and the second port of the device for maintaining the regeneration device. Liquid recovery in the tank.
  • the maintenance regeneration apparatus may include a gas drive device disposed in the second gas line and connected to the liquid storage tank via the gas drive line, the gas drive device capable of driving the gas in the gas storage tank via the first port of the device and the lithium
  • the first port of the top cover of the slurry battery enters the lithium slurry battery and is capable of driving the gas in the gas storage tank into the liquid storage tank and thereby driving the liquid in the liquid storage tank via the second port of the device and the top cover of the lithium slurry battery
  • the two ports enter the lithium slurry battery either via the first port of the device and the top port of the top of the lithium slurry battery.
  • the gas in the gas storage tank can be pumped into the lithium slurry battery via the first port of the device and the top port of the lithium slurry battery by the gas drive.
  • the control device or manually opens the control valve on the second liquid control valve and the gas drive line the gas in the gas storage tank can be pumped into the liquid storage tank by the gas drive device, thereby passing the liquid in the liquid storage tank
  • the second port of the device and the top port of the lithium slurry battery are pushed into the lithium slurry battery via the first port of the device and the top port of the lithium slurry battery. That is to say, the gas in the gas storage tank can be pumped by the gas driving device, and the liquid in the liquid storage tank can be pumped.
  • the maintenance regeneration apparatus includes a gas driving device and a second liquid pump, the gas driving device is disposed in the second gas pipeline, and the gas driving device is capable of driving the gas in the gas storage tank via the first port of the device and the lithium slurry
  • the first port of the top cover of the battery enters the lithium slurry battery
  • the second liquid pump is disposed in the second liquid line, and the second liquid pump can drive the liquid in the liquid storage tank via the second port of the device and the lithium slurry battery
  • the top cover second port enters the lithium slurry battery either via the device first port and the top cover first port of the lithium slurry battery.
  • the gas in the gas storage tank can be pumped into the lithium slurry battery via the first port of the device and the top port of the lithium slurry battery by the gas drive.
  • the liquid in the liquid storage tank may be used to pass the liquid in the liquid storage tank through the second port of the device and the top port of the lithium slurry battery or via the first port of the device and lithium The first port of the top cover of the slurry battery is pumped into the lithium slurry battery. That is, the delivery of the liquid in the gas and liquid storage tanks in the gas storage tank is accomplished by the gas drive and the second liquid pump, respectively.
  • the maintenance regeneration apparatus can also include a third gas line, the third gas line and the first manifold connecting the first port of the apparatus to the gas recovery storage tank.
  • a third gas control valve may be disposed on the third gas pipeline. When the gas pressure in the lithium slurry battery is greater than a predetermined gas pressure, the gas in the lithium slurry battery can pass through the first port of the device, the first manifold, and the third gas pipe. The road and the third gas control valve enter the gas recovery storage tank either via the second port of the apparatus, the second manifold, the third gas line, and the third gas control valve.
  • the third gas control valve may be an exhaust valve that is automatically opened and closed by the gas pressure in the third gas line; or the third gas control valve may be an electronic control valve that passes through the detected third gas line
  • the gas pressure is turned on and off by the control unit or manually.
  • the gas exceeding the predetermined gas pressure value in the lithium slurry battery can also enter the gas recovery storage tank through the first gas line and the first gas control valve.
  • the gas pressure in the lithium slurry battery will increase due to overcharge and overdischarge of the lithium slurry battery cell and evaporation of the electrolyte.
  • the predetermined gas pressure range in the lithium slurry battery can be determined according to actual needs, and can be, for example, 0.15 MPa to 0.5 MPa.
  • a barometer may be provided in the first manifold and/or the second manifold for detecting the air pressure in the first manifold and/or the second manifold.
  • one end of the first manifold is connected to the first port of the device, and the other end is connected to the first gas line, the second gas line, and the third gas line through the four-way joint.
  • a hydraulic gauge may be provided in the first manifold and/or the second manifold for detecting hydraulic pressure in the first manifold and/or the second manifold.
  • one end of the second manifold is connected to the second port of the device, and the other end is connected to the first liquid line and the second liquid line through the three-way joint.
  • the maintenance regenerative apparatus may further include a vibration heating device by which the lithium slurry battery can be subjected to vibration heating to clean the lithium paste battery or to remove the SEI film.
  • a vibration heating device by which the lithium slurry battery can be subjected to vibration heating to clean the lithium paste battery or to remove the SEI film.
  • the electrolyte will gradually fail due to the occurrence of side reactions, and the SEI film generated by the side reaction of the electrode active material or even the current collector surface will be continuously thickened, which will result in the lithium slurry battery. Increased resistance and decreased cycle life.
  • the SEI film may be removed by a high-temperature treatment, ultrasonic heating, or the like of the lithium paste battery by a vibration heating device.
  • the lithium slurry battery is cleaned by multiple vacuuming, liquid injection, and liquid discharge.
  • the lithium slurry battery can be vibrated and heated by the vibration heating device during the cleaning process.
  • the maintenance regeneration device may further comprise a weighing device, and the lithium slurry battery before and after the liquid injection can be weighed by the weighing device, thereby accurately obtaining the liquid injection amount of the lithium slurry battery.
  • maintenance and regeneration equipment can also accurately grasp the amount of liquid injection by controlling the amount of liquid injection and sensor detection.
  • the maintenance regeneration apparatus may further include a chemical conversion device, and the positive electrode tab and the negative electrode tab of the chemical conversion device may be electrically connected to the positive electrode terminal and the negative electrode terminal of the lithium slurry battery and capable of charging and discharging the lithium paste battery.
  • the chemical conversion device Through the chemical conversion device, the lithium slurry battery can be sufficiently discharged before the lithium slurry battery is changed.
  • the SEI film can be removed from the lithium paste battery by a method such as repeated charge and discharge, high current charge and discharge, high potential overcharge and discharge by the chemical conversion device.
  • the maintenance regeneration apparatus may further include control means capable of controlling the first gas control valve, the second gas control valve, the third gas control valve, the first liquid control valve, the second liquid control valve, the vacuuming device, the gas drive by the control device
  • the device, the first liquid pump, the second liquid pump, the vibration heating device, the chemical forming device, and the monitoring device are turned on and off.
  • the control device can control the liquid level, the air pressure, and the like of the lithium slurry battery by the operation of the maintenance regeneration device based on the detection data fed back by the detection device of the lithium slurry battery.
  • a control panel can be provided on the maintenance regeneration device, and the operation of the control device and the manual operation of each control valve and device can be realized through the control panel.
  • the lithium paste battery can have a conventional lithium paste battery structure, such as placing a battery of a lithium paste battery in a housing of a lithium paste battery.
  • a discharge device is also provided in the lithium paste battery.
  • the discharge device comprises a support seepage portion and a suction portion, the battery core is disposed on the support seepage portion and the peripheral side wall of the battery core is sealingly connected with the support seepage portion, and the seepage portion is provided with a seepage space and the discharge in fluid communication with the seepage space
  • the passage, the discharge passage is in fluid communication with one end of the suction portion and the other end of the suction portion is coupled to the top cover second port on the top cover.
  • the supporting seepage portion functions both to support the electric core and to act as a seepage fluid. That is to say, the supporting seepage portion may be a plate shape, a block shape, a box shape or a combination thereof, at least the edge portion thereof may support the battery core, and the middle portion thereof may also support the battery core through the structure such as the ribs and the protruding platform. .
  • the seepage space supporting the seepage portion may be, for example, a groove, a hole, a cavity, or the like, and the fluid in the seepage space supporting the seepage portion may be discharged by supporting the discharge passage on the seepage portion.
  • One end of the suction portion is in fluid communication with the discharge passage and the other end is in fluid communication with the second port of the top cover on the top cover, and the suction from the support can be performed by suctioning from the second port of the top cover on the top cover by means of a suction device
  • the fluid flowing out of the discharge passage of the portion is drawn out through the suction portion.
  • the number of discharge passages may be one or more.
  • the periphery and the gap between the battery core and the supporting seepage portion ensure that the fluid in the battery core can be completely discharged, thereby enabling sufficient liquid exchange inside the battery core of the lithium slurry battery.
  • the sealing connection between the support seepage portion and the peripheral side walls of the cell can be achieved by a sealant, a sealing strip or a sealing ring or the like.
  • the sealant can be made of a polytetrafluoroethylene binder, a high-performance instant glue, a room temperature curing polytetrafluoroethylene glue, and the like.
  • the side walls supporting the seepage portion and the battery core can also be realized by hot air welding or hot press welding.
  • the portion where the support seepage portion and the battery core are sealingly connected may be selected according to the specific structure of the support seepage portion. Wherein, when the top surface or part of the top surface of the support seepage portion is a planar structure, a portion of the side wall of the surrounding wall adjacent to the bottom portion may be sealingly connected with a plane portion supporting the top surface of the seepage portion; or, when the support seepage portion is provided When the sidewall is vertical, the vertical sidewall may be disposed around the circumference of the cell and less than or equal to the height of the cell, and the upper end portion, the plurality of portions or the entire vertical sidewall of the vertical sidewall may be adjacent to the sidewall of the cell
  • the sealing connection or, when the supporting seepage portion is provided with a groove adapted to the size of the battery core, the battery core can be placed in the groove, and the side wall of the groove can be sealingly connected with the surrounding side wall of the
  • the body supporting the seepage portion may be a structure such as a support plate, a baffle or a base.
  • the support seepage portion may be a support plate, and the guide plate may be provided with a guide groove, and the guide groove is in fluid communication with the discharge channel provided on the side wall of the support plate, wherein the guide groove is a seepage for supporting the seepage portion space.
  • the guide groove may be in the shape of a straight or continuous bend - for example, S-shaped, wavy, polygonal, etc., the number of the guide grooves may be one or more, and at least one end of each of the guide grooves and the discharge channel are fluid Connected.
  • the support seepage portion may be provided with a baffle of height h, and the deflector is provided with a plurality of inclined grooves, the depth of the inclined groove is gradually deepened by zero and the depth is less than or equal to the height h of the baffle.
  • the baffle here differs from the above-described support plate in that the baffle has an effect on the fluid flow, which can be achieved by inclined grooves provided on the baffle. By tilting the grooves, all of the fluid can be directed to one end of the baffle and discharged, so that the inclined grooves can act as a discharge passage without the need to provide a separate discharge passage on the side walls of the baffle.
  • the inclined groove also serves as a seepage space.
  • the support seepage portion may be provided with a baffle having a height h, and the upper surface of the baffle is an inclined surface that converges at a point.
  • the convergence point is located on one side of the baffle and the height of the convergence point is smaller than the baffle. Height h.
  • the inclined surface may be a part of the conical surface, and the apex of the conical surface serves as the convergence point; or the inclined surface may be a plurality of triangular inclined surfaces, and one vertex of each of the plurality of triangular inclined surfaces converges on the convergence point.
  • the space above the inclined surface here can serve as both a seepage space and a discharge passage.
  • the support seepage portion may include only the above-described baffles.
  • the support seepage portion may be provided with a seepage plate.
  • the seepage plate may be disposed on the upper surface of the baffle plate and fixedly connected to the baffle plate.
  • the throughflow plate may be provided with a plurality of through holes, and the fluid in the electric cell can flow to the baffle through the through hole on the seepage plate and via The flow guiding of the deflector enters the suction portion.
  • the seepage plate can both stably support the battery core and allow the fluid in the battery core to seep through the seepage plate.
  • the supporting seepage portion comprises a lower deflector and an upper seepage plate
  • the peripheral side walls of the cell are sealingly connected to the seepage plate and the peripheral edges of the seepage plate and the baffle are also sealingly connected.
  • the support seepage portion may be a base, and the base includes a protruding base sidewall at a peripheral edge of the base, a support platform located inside the side wall of the base, and a flow guiding cavity (seepage space) at a middle portion of the base.
  • the central portion of the bottom surface of the flow guiding cavity is higher than the edge portion and lower than the height of the support table.
  • the bottom surface of the flow guiding cavity may be any structure of the upper surface of the above-mentioned baffle or a combination thereof.
  • the battery core can be sealingly connected to the support table, and the fluid in the flow guiding cavity can flow out through the discharge passage provided on the support table and the side wall of the base.
  • the suction portion may be a flexible tube, a rigid tube, a channel integrally formed with the housing or a separate plate body, and the like.
  • the specific form of the suction portion is related to the structure of the discharge passage supporting the seepage portion. If the discharge passage is a hole, a convergence point, a tubular structure or the like, one end of the suction portion or the entire suction portion may be in the form of a flexible tube, a rigid tube or a tubular passage corresponding thereto; if the discharge passage is wide (for example, An elongated strip, a plurality of grooves or a plurality of holes arranged in a row), one end of the suction portion (for example, an elongated opening) may be in fluid communication with the entire discharge passage.
  • the suction portion may include a vertical suction portion and a horizontal suction portion, wherein the vertical suction portion may be a trapezoidal vertical suction box, and the horizontal suction portion may be a square horizontal suction box, vertically suctioned
  • the box and the horizontal suction box are both hollow box structures, the wider lower end of the vertical suction box is connected and in fluid communication with the discharge passage supporting the seepage portion, and one end of the horizontal suction box is connected to the vertical suction box The top end and the opening on the other end of the horizontal suction box is connected to the top cover second port of the top cover; or the vertical suction portion is a vertical wall provided with, for example, a tubular vertical passage, the horizontal suction portion is provided a horizontal strip having, for example, a tubular horizontal passage or a grooved horizontal passage, the lower end of the vertical passage in the vertical wall being connected and in fluid communication with the discharge passage supporting the seepage portion, one end of the horizontal passage of the horizontal strip and the vertical wall
  • the vertical channel is in fluid communication and
  • the lithium slurry battery system of the present invention has the functions of injecting liquid, replenishing, changing liquid, gas injection, exhausting, chemical formation, etc. for the lithium slurry battery, and the functional modules are integrated and modularized, which is beneficial to the lithium slurry.
  • the lithium paste battery system of the present invention can have a flexible working mode and a high degree of automation. It can be used for maintenance and regeneration in the lithium slurry battery application site. For example, when the lithium slurry battery is used in an electric vehicle, the maintenance and regeneration equipment can be used for maintenance and regeneration without disassembling the battery, and the maintenance and regeneration equipment can be placed in the maintenance regeneration station. Maintenance and regeneration of the lithium slurry battery;
  • the maintenance and regeneration equipment of the lithium slurry battery system can be quickly and accurately connected and separated from the lithium slurry battery required for maintenance, and the operation is simple, the work efficiency is high, and the space is small. ,low cost;
  • the multiple fluid passages of the top cover docking device can be independently turned on or off, and the targeted maintenance and regeneration can be flexibly performed according to the requirements of the lithium slurry battery, thereby making the docking device of the lithium slurry battery system better. Flexibility;
  • the percolation space of the permeation support portion can collect the electrode active conductive particles leaking from the electrode sheet, thereby effectively preventing the short circuit caused by the leakage of the electrode active conductive particles of the electrode sheet.
  • FIG. 1 is a schematic illustration of a lithium paste battery system in accordance with the present invention.
  • FIG. 2 is a schematic view of a top cover of a lithium slurry battery according to an embodiment of the present invention
  • FIGS. 3(a) and 3(b) respectively show the cap docking device and the device docking, respectively.
  • FIG. 4 is a partial cross-sectional view of a docking device for a lithium slurry battery and a maintenance regeneration device according to an embodiment of the present invention
  • FIG. 4(a) is a state diagram when the device docking device is separated from the top cover docking device
  • FIG. 4 (b) a state diagram when the device docking device is docked with the top cover docking device
  • FIG. 5 is a partial cross-sectional view of a docking device for a lithium slurry battery and a maintenance regeneration device according to another embodiment of the present invention, wherein FIG. 5(a) is a state diagram when the device docking device is separated from the top cover docking device.
  • Figure 5 (b) is a state diagram when the device docking device is docked with the top cover docking device;
  • FIG. 6 is a schematic structural diagram of a maintenance and regeneration device according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural view of a maintenance regeneration device according to another embodiment of the present invention.
  • Figure 8 is a schematic view showing a fluid flow path in a lithium slurry battery according to the present invention.
  • Figure 9 is a schematic view of a discharge device according to an embodiment of the present invention, wherein Figures 9(a)-(d) respectively show the discharge device as a whole, a support seepage portion, a baffle and a fluid flow path;
  • Figure 10 is a schematic view of a discharge device according to another embodiment of the present invention, wherein Figures 10(a)-(d) respectively show the discharge device as a whole, a support seepage portion, a baffle, and a fluid flow path;
  • Figure 11 is a schematic view of a support seepage portion according to still another embodiment of the present invention, wherein Figures 11(a) and 11(b) respectively show an exploded view and an overall view of the support seepage portion.
  • the maintenance regeneration device 1 comprises a host 2 and a device docking device 3, wherein the device docking device 3 is connected to a liquid storage tank, a gas storage tank, a liquid recovery storage tank and a gas recovery storage tank in the main body 2 via a fluid line, through the fluid valve It is possible to control the flow, flow direction and flow rate of the fluid.
  • the control device and the operation interface of the device docking device 3 may be directly disposed on the device docking device 3 or may be disposed on the host 2.
  • the lithium paste battery 4 includes a battery core, a lower case 4a, and a top cover 4b, and the top cover docking device 7 is disposed on the top cover 4b.
  • the device docking device 3 and the top cover docking device 7 can be quickly docked or disconnected, so that the online maintenance regeneration operation of the lithium slurry battery can be realized in the lithium slurry battery system.
  • the top cover 4b of the lithium slurry battery is provided with a top cover docking device 7, wherein the top cover docking device 7 includes a top cover docking device joint 703, a top cover first port 7A, a top cover second port 7B and a top cover data transmission Port 715.
  • the top cover docking device engagement portion 703 is a continuous outer wall structure that extends upward from the top surface of the top cover 4b and continuously surrounds the top cover first port 7A, the top cover second port 7B, and the top cover data transmission port 715, thereby forming A cavity that houses the top cover first port 7A, the top cover second port 7B, and the top cover data transfer port 715.
  • the top cover data transmission port 715 is connected to the detection device inside the lithium paste battery for transmitting the data detected by the detection device.
  • FIG. 3 is a plan view showing an anti-reverse connection structure of a device docking device and a top cover docking device according to an embodiment of the present invention, wherein FIG. 3(a) shows a top view of the top cover docking device, and FIG. 3(b) shows A bottom view of the device docking device.
  • the top cover docking device 7 includes two guide posts 716, one of which has a hexagonal cross-sectional shape and the other guide post has a triangular cross-sectional shape.
  • the device docking device 3 includes two guide holes 314, one of which has a hexagonal cross-sectional shape and the other of which has a triangular cross-sectional shape.
  • the device docking device 3 and the top cover docking device 7 can be quickly positioned and docked. Moreover, the first trigger mechanism 302a and the second trigger mechanism 302b of the device docking device can be prevented from being reversely connected to the first opening and closing mechanism 702a and the second opening and closing mechanism 702b of the top cover docking device.
  • FIG. 4 is a partial cross-sectional view of a docking device for a lithium slurry battery and a maintenance regeneration device, in accordance with an embodiment of the present invention.
  • 4(a) is a state diagram when the device docking device is separated from the top cover docking device;
  • FIG. 4(b) is a state diagram when the device docking device is docked with the top cover docking device, wherein the first trigger mechanism shown on the left side is shown in FIG.
  • the first opening and closing mechanism has been activated and a fluid passage is formed (as indicated by the arrow in Fig. 4(b)), and the second trigger mechanism shown on the right side does not activate the second opening and closing mechanism and closes the fluid passage.
  • the device docking device includes a first mounting hole 301a and a second mounting hole 301b, a first triggering mechanism 302a and a second triggering mechanism 302b, and a device docking device engaging portion 303.
  • the first triggering mechanism 302a and the second triggering mechanism 302b are slidably coupled to the first A mounting hole 301a and a second mounting hole 301b.
  • the device docking device engagement portion 303 includes a cylinder surrounding the first trigger mechanism 302a and the second trigger mechanism 302b and a connecting ring 304 sleeved on the cylinder, the external thread is provided on the cylinder and
  • the connecting ring 304 is provided with internal threads.
  • the first triggering mechanism 302a and the second triggering mechanism 302b include a stepped hole 305 and a top block 306 slidable in the stepped hole.
  • the top block 306 can be moved in the stepped hole 305 by a control device or a manual manner, and the stepped hole 305 can be Plays a role in limiting the top block 306.
  • the first trigger mechanism 302a and the second trigger mechanism 302b are respectively provided with a plug inner wall 307 and a second recess 308 disposed around the outer side of the plug inner wall 307, and a second seal is disposed in the second recess 308. .
  • the top cover docking device includes a first opening 701a and a second opening 701b, a first opening and closing mechanism 702a and a second opening and closing mechanism 702b, and a top cover docking device joint 703, a first opening 701a, a second opening 701b, and a top
  • the cover docking device joint portion 703 is integrally formed with the top cover of the lithium slurry battery, and the fixed portions of the first opening and closing mechanism 702a and the second opening and closing mechanism 702b are respectively sealed and fixed in the first opening 701a and the second opening 701b.
  • the top cover docking device engaging portion 703 is a cylinder surrounding the first opening opening and closing mechanism 702a and the second opening opening and closing mechanism 702b, and is provided with an external thread on the top cover docking device engaging portion 703 and A first recess 704 and a first seal are provided on the top surface.
  • the first opening and closing mechanism 702a and the second opening and closing mechanism 702b include a ejector pin 705, an inner hole, a boss portion 706, a stopper 707 and a spring 708.
  • the thimble 705 is integrally formed with the stopper 707 and fixedly coupled to the spring 708.
  • the force of the spring 708 causes the stop 707 to abut the boss portion 706 and seal the fluid passage.
  • the first opening and closing mechanism 702a and the second opening and closing mechanism 702b may also be respectively provided with a plug outer wall 709, and the upper surface of the boss portion 706 of the inner hole may be provided with a third sealing member.
  • the docking operation process of the docking device will be described with reference to FIG. Firstly, the device docking device is docked with the top cover docking device, and the precise positioning can be performed through the guiding hole provided on the device docking device and the guiding column disposed on the top cover docking device, so that the two triggering mechanisms on the device docking device are The two opening opening and closing mechanisms on the top cover docking device are respectively aligned, and the device docking device engaging portion 303 is aligned with the top cover docking device engaging portion 703.
  • the device vacuums the cavity 8 formed by the device docking device engaging portion 303 and the top block docking device engaging portion 703 via a stepped hole in the triggering mechanism of the device docking device, and then controls the triggering mechanism to slide downward and open with the opening through the control device.
  • the closed mechanism is sealed.
  • first seal Forming a first resealing between the cap docking device engagement portion and the device docking device engagement portion by a first seal disposed in the first recess 704 of the top cover docking device engagement portion 703; by providing a trigger mechanism
  • the second sealing member in the second recess 308 forms a second re-sealing between the second recess 308 of the trigger mechanism and the plug-in outer wall 709 of the opening and closing mechanism; through the boss portion of the opening and closing mechanism
  • the third seal on the 706 forms a third resealing between the plug inner wall 307 of the trigger mechanism and the boss portion 706 of the opening and closing mechanism.
  • the top block 306 in the first trigger mechanism 302a is activated such that the top block 306 pushes the ejector pin 705 and the stop 707 of the first opening and closing mechanism 702a and causes the stop 707 to move away from the boss portion 706, thereby being within the first trigger mechanism 302a.
  • the stepped hole 305 and the inner hole of the first opening and closing mechanism 702a form a fluid passage for fluid circulation.
  • the top block 306 in the first trigger mechanism 302a is withdrawn such that the ejector pin 705 and the stop 707 of the first opening and closing mechanism 702a are reset by the action of the compressed spring 708 and the stopper 707 is held against
  • the boss portion 706 seals the inner hole of the first opening and closing mechanism and thereby cuts off the fluid passage between the stepped hole 305 in the first trigger mechanism 302a and the inner hole of the first opening and closing mechanism 702a.
  • FIG. 5 is a partial cross-sectional view of a docking device for a lithium slurry battery and a maintenance regeneration device in accordance with another embodiment of the present invention.
  • Figure 5 (a) is a state diagram when the device docking device is separated from the top cover docking device;
  • Figure 5 (b) is a state diagram when the device docking device is docked with the top cover docking device, wherein the first trigger mechanism shown on the left side The first opening and closing mechanism has been activated and a fluid passage is formed (as indicated by the arrow in Fig. 5(b)), and the second trigger mechanism shown on the right side does not activate the second opening and closing mechanism and closes the fluid passage.
  • the device docking device includes a first mounting hole 301a and a second mounting hole 301b, a first triggering mechanism 302a and a second triggering mechanism 302b, and a device docking device engaging portion 303.
  • the fixed portions of the first triggering mechanism 302a and the second triggering mechanism 302b are respectively The seal is fixed in the first mounting hole 301a and the second mounting hole 301b.
  • the device docking device engaging portion 303 includes an engaging hole 309, and a card member 310 is provided on the inner wall of the engaging hole 309.
  • the first trigger mechanism 302a and the second trigger mechanism 302b include an inner hole and a trigger mechanism cylinder 311 rotatable in the inner hole.
  • the trigger mechanism cylinder 311 is provided with a trigger mechanism passage 312 and a plug portion 313, through a control device or a manual The manner of the trigger mechanism cylinder 311 can be moved up and down in the inner hole.
  • the first trigger mechanism 302a and the second trigger mechanism 302b are respectively provided with a plug inner wall 307 and a second recess 308 disposed around the outer side of the plug inner wall 307, and a second seal is disposed in the second recess 308. .
  • the top cover docking device includes a first opening 701a and a second opening 701b, a first opening opening and closing mechanism 702a and a second opening opening and closing mechanism 702b, and a top cover docking device joint 703, a first opening and closing mechanism 702a and a second opening
  • the fixing portions of the opening and closing mechanism 702b are respectively sealed and fixed in the first opening 701a and the second opening 701b.
  • the top cover docking device engaging portion 703 is a cylinder surrounding the first opening opening and closing mechanism 702a and the second opening opening and closing mechanism 702b, and a card slot is provided on the side of the top cover docking device engaging portion 703.
  • the first opening and closing mechanism 702a and the second opening and closing mechanism 702b are respectively provided with a rotating opening and closing mechanism cylinder 710 and a fixed opening opening and closing mechanism cylinder 711.
  • the rotating opening and closing mechanism cylinder 710 is provided with a first opening.
  • the closing mechanism passage 712 and the insertion hole 713 and the fixed opening and closing mechanism cylinder 711 are provided with a second opening opening and closing mechanism passage 714.
  • the first opening and closing mechanism passage 712 and the second opening opening and closing mechanism The passage 714 is staggered (see the opening opening and closing mechanism on the right side in Fig. 5(b)) to seal the inner hole of the opening and closing mechanism.
  • the first opening and closing mechanism 702a and the second opening and closing mechanism 702b may also be respectively provided with a plug outer wall 709, and the upper surface of the boss portion 706 of the inner hole may be provided with a third sealing member.
  • the docking operation process of the docking device will be described with reference to FIG. Firstly, the device docking device is docked with the top cover docking device, and the precise positioning can be performed through the guiding hole provided on the device docking device and the guiding column disposed on the top cover docking device, so that the two triggering mechanisms on the device docking device are The two opening and closing mechanisms on the top cover docking device are respectively aligned, and the device docking device joint portion is aligned with the top cover docking device joint portion.
  • the engagement hole 309 of the device docking device joint portion 303 is sleeved on the cylindrical top cover docking device joint portion 703, and the card slot of the telescopic card member 310 and the top cover docking device joint portion of the joint portion of the device docking device is passed.
  • the 717 is engaged, and the trigger mechanism is sealingly connected with the opening and closing mechanism.
  • the cavity 8 formed by the device docking device joint 303 and the cap docking device joint 703 is evacuated and filled with an inert gas via an interface (not shown) on the device docking device.
  • first seal Forming a first re-sealing between the top cover docking device engagement portion 703 and the device docking device engagement portion 303 by a first seal provided on a top surface of the top cover docking device engagement portion 703;
  • the second seal in the two recesses 308 forms a second re-sealing between the second recess 308 of the trigger mechanism and the plug outer wall 709 of the opening and closing mechanism; through the boss portion 706 provided in the opening and closing mechanism
  • the upper third seal forms a third re-sealing between the plug inner wall 307 of the trigger mechanism and the boss portion 706 of the opening and closing mechanism.
  • the trigger mechanism cylinder 311 in the first trigger mechanism 302a is activated such that the plug portion 313 of the trigger mechanism cylinder 311 is inserted downward into the insertion hole 713 of the rotary opening and closing mechanism cylinder 710 and the trigger mechanism cylinder 311 is
  • the trigger mechanism passage 312 is in fluid communication with the first opening and closing mechanism passage 712 of the rotary opening and closing mechanism cylinder 710, and further rotates the trigger mechanism cylinder 311 and drives the rotary opening and closing mechanism cylinder 710 to rotate to cause the trigger mechanism passage 312,
  • the first opening and closing mechanism passage 712 is in fluid communication with the second opening and closing mechanism passage 714 of the fixed opening and closing mechanism cylinder 711 so as to be inside the first opening and closing mechanism 702a in the first triggering mechanism 302a.
  • a fluid passage is formed between the holes for fluid communication.
  • the trigger mechanism cylinder 311 is further rotated and the rotary opening and closing mechanism cylinder 710 is rotated to rotate the trigger mechanism passage 312, the first opening and closing mechanism passage 712 and the fixed opening and closing mechanism cylinder 711.
  • the two opening and closing mechanism passages 714 are staggered to seal the inner hole of the first opening and closing mechanism and thereby cut off the fluid passage between the inner hole of the first trigger mechanism 302a and the inner hole of the first opening and closing mechanism 702a.
  • the insertion portion 313 of the trigger mechanism cylinder 311 is removed upward from the insertion hole 713 of the rotary opening opening and closing mechanism cylinder 710.
  • the device docking device is removed from the top cover docking device by retracting the retractable clip 310 of the device docking device engagement portion from the card slot 717 of the top cover docking device engagement portion.
  • FIG. 6 is a schematic structural view of a maintenance regeneration device according to an embodiment of the present invention.
  • the maintenance regeneration device includes a device first port 3A, a vacuuming device 112, a gas driving device 115, a third gas control valve 117, a gas recovery storage tank 105, a gas storage tank 106, a device second port 3B, a first liquid pump 121, The liquid recovery storage tank 107 and the liquid storage tank 108.
  • the first port 3A of the device is connected to the gas recovery storage tank 105 via the first manifold 109 and the first gas line 110, and the first gas control valve 111 and the vacuuming device 112 are disposed on the first gas line 110;
  • the port 3A is connected to the gas storage tank 106 via the first manifold 109 and the second gas line 113, and the second gas control valve 114 and the gas driving device 115 are disposed on the second gas line 113;
  • the first port 3A of the device is passed through A manifold 109 and a third gas line 116 are connected to the gas recovery tank 105, and a third gas control valve 117 is provided on the third gas line 116.
  • the second port 3B of the device is connected to the liquid recovery storage tank 107 via the second manifold 118 and the first liquid line 119, and the first liquid control valve 120 and the first liquid pump 121 are disposed on the first liquid line 119;
  • the two ports 3B are connected to the liquid storage tank 108 via the second manifold 118 and the second liquid line 122, and the second liquid control valve 123 is provided on the second liquid line 122;
  • the liquid storage tank 108 is connected via the gas driving line 125.
  • a barometer 101 is provided in the first header pipe 109, and a hydraulic gauge 102 is provided in the second header pipe 118.
  • the control valve, the vacuuming device, the gas driving device, and the liquid pump can be controlled by the control device 103.
  • FIG. 7 is a schematic structural view of a maintenance regeneration apparatus according to another embodiment of the present invention.
  • This embodiment differs from the above embodiment in that the device second port 3B is connected to the liquid storage tank 108 via the second manifold 118 and the second liquid line 122, and the second liquid pump is provided in the second liquid line 122. 124 and a second liquid control valve 123. That is, the liquid in the liquid storage tank 108 is driven by the second liquid pump 124 instead of the liquid in the liquid storage tank 108 by the gases in the gas drive 115 and the gas storage tank 106.
  • the lithium paste battery may include a case, a battery core, and a discharge device, the case including a top cover 4b and a lower case 4a, and the top cover 4b is provided with a top cover first port 7A and the top cover second port 7B, the discharge means includes a support seepage portion 5a and a suction portion 5b.
  • the peripheral side wall of the cell 9 is sealingly connected to the supporting permeate 5a of the discharge device.
  • the discharge passage 501 supporting the seepage portion 5a is in fluid communication with one end of the suction portion 5b and the other end of the suction portion 5b is connected to the top cover second port 7B on the top cover.
  • the sealing portion 6 between the battery core and the supporting seepage portion, the seepage space 502 supporting the seepage portion 5a, the discharge passage 501 supporting the seepage portion 5a, the suction passage 511 of the suction portion 5b, and The top cover second port 7B defines a fixed fluid flow path.
  • the electrolyte injected into the casing through the top cover first port 7A first enters the battery core 9.
  • the electrolyte in the battery core flows down into the support seepage portion.
  • the seepage space 502 of 5a, the suction passage 511 via the discharge passage 501 and the suction portion 5b is discharged from the battery case.
  • the electrolyte in the casing cannot be directly sucked out of the battery casing around the battery core, and can be discharged out of the casing only after passing through the battery core, so that the battery can be washed.
  • the permeation space of the permeation support portion can collect the electrode active conductive particles leaking from the electrode sheet, and discharge the battery case during the liquid exchange of the battery, so that the short circuit due to the leakage of the electrode active conductive particles of the electrode sheet can be effectively prevented.
  • FIG. 9 is a schematic view of a discharge device according to an embodiment of the present invention, wherein FIGS. 9(a)-(d) respectively show the discharge device as a whole, a support seepage portion, a baffle, and a fluid flow path.
  • the discharge means is constituted by a support permeate portion 5a and a suction portion 5b.
  • the suction portion 5b includes a vertical suction portion 512 which is a trapezoidal and hollow vertical suction box, and a horizontal suction portion 513 which is square and hollow horizontal suction a box, the wider lower end of the vertical suction box is substantially the same as the width of the support percolating portion 5a and can be matedly connected, one end of the horizontal suction box is connected to the top end of the vertical suction box and the other end of the horizontal suction box The upper opening is connected to the second port of the top cover of the top cover.
  • the horizontal suction box and the vertical suction box may be connected together by assembly or may be integrally formed. As shown in FIGS.
  • the support seepage portion has a two-layer structure, the upper layer is a seepage plate 504 and the lower layer is a baffle 503.
  • the seepage plate 504 is a planar structure, and a plurality of elongated through holes 505 are provided in the seepage plate 504, and the fluid in the battery core can seep down through the elongated through holes 505 on the seepage plate.
  • a plurality of parallel inclined grooves 506 are formed on the deflector 503.
  • the inclined grooves 506 are gradually inclined from one end of the deflector 503 to the other end, and the depth of the inclined grooves ranges from about 0 to h, wherein h is a guide The thickness of the flow plate.
  • the inclined groove acts both as a seepage space into which fluid can flow from above and as a discharge passage for drawing out fluid in the seepage space.
  • the arrow in Figure 9(d) shows the flow path of the fluid, first the fluid in the cell goes down into the inclined groove on the baffle via the through hole 505 on the permeate plate, after which the fluid in the groove is inclined Flows to the lower end and into the cavity of the vertical suction box, which is then sucked into the cavity of the horizontal suction box and finally sucked out of the battery housing via the opening on the top surface of the horizontal suction box, The cavity of the vertical suction box and the cavity of the horizontal suction box are combined to form a suction passage 511.
  • FIGS. 10(a)-(d) respectively show the discharge device as a whole, a support seepage portion, a baffle, and a fluid flow path.
  • the discharge means is constituted by a support permeate portion 5a and a suction portion 5b.
  • the suction portion 5b includes a vertical suction portion 512 which is a vertical wall provided with a tubular vertical passage 514, and a horizontal suction portion 513 which is provided with a groove-shaped level a horizontal strip of the passage 515, the lower end of the vertical wall is substantially the same as the width of the support seepage portion 5a and can be matedly connected, one end of the horizontal strip is connected to the top end of the vertical wall and the upper surface of the horizontal strip is fixedly coupled to the lower surface of the top cover
  • One end of the trough-like horizontal passage 515 on the horizontal strip is in fluid communication with the top end of the tubular vertical passage 514 and the other end of the trough-like horizontal passage 515 on the horizontal strip is in fluid communication with the top cover second port of the top cover.
  • the support seepage portion has a two-layer structure, the upper layer is a seepage plate 504 and the lower layer is a baffle 503.
  • the seepage plate 504 is a planar structure, and a plurality of elongated through holes 505 are provided in the seepage plate 504, and the fluid in the battery core can seep down through the elongated through holes 505 on the seepage plate.
  • Three triangular inclined faces are provided on the deflector 503.
  • the fluid in the cell enters the seepage space formed by the inclined surface on the deflector via the through hole 505 on the seepage plate, and then the seepage space
  • the fluid in the flow flows toward the point of convergence G and enters the lower end of the tubular vertical passage 514 in fluid communication with the point of convergence G, and is then drawn from the tubular vertical passage 514 into the trough-like horizontal passage 515 on the horizontal strip, and finally through the top
  • the cover second port is drawn out of the battery housing, wherein the suction passage is formed by the tubular vertical passage 514 and the groove-shaped horizontal passage 515.
  • Figure 11 is a schematic view of a support seepage portion according to still another embodiment of the present invention, wherein Figures 11(a) and 11(b) respectively show an exploded view and an overall view of the support seepage portion.
  • the support seepage is in the form of a base comprising a base side wall 507, a support base 508 and a flow guiding cavity 509.
  • the guiding cavity 509 is disposed in the middle of the support table 508.
  • the bottom surface of the guiding cavity 509 is a convex surface with a middle height and a low end. The fluid in the guiding cavity can be guided to both sides of the guiding cavity, and the highest point of the convex surface is low.
  • the support seepage portion 5 further includes a vertical side wall 510 and a seepage plate 504, where the vertical side wall 510 and the seepage plate 504 are integrally formed into a box shape and can be fixedly connected to the support table 508, and the battery core can be stably placed on the It is formed in a box-like structure composed of a vertical side wall 510 and a seepage plate 504.
  • the vertical side walls can better serve to maintain the support cells, and the upper ends of the vertical side walls can be sealingly connected to the side walls of the cells.

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Abstract

本发明提供了一种锂浆料电池系统,该锂浆料电池系统包括锂浆料电池以及用于锂浆料电池的维护再生设备。锂浆料电池与维护再生设备可以通过锂浆料电池的顶盖对接装置和维护再生设备的设备对接装置方便地进行对接,用以将维护再生设备的气体储罐的气体或液体储罐的液体注入锂浆料电池中或者将锂浆料电池中的气体或液体排出至维护再生设备的气体回收储罐或液体回收储罐中,因此可以对锂浆料电池进行注液、补液、换液、注气以及排气等操作,从而提高电池的使用性能、安全性和密封性,延长电池寿命,实现锂浆料电池的维护以及再生。

Description

一种锂浆料电池系统
本申请要求于2017年04月07日提交中国专利局、申请号为201710224927.2、发明名称为“一种锂浆料电池的维护再生设备以及维护再生方法”的中国专利申请、于2017年08月18日提交中国专利局、申请号为201710710934.8、发明名称为“一种用于锂浆料电池和锂浆料电池维护再生设备的对接装置”的中国专利申请,以及于2017年10月24日提交中国专利局、申请号为201710997294.3、发明名称为“一种可换液式锂浆料电池”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
技术领域
本发明涉及锂浆料电池领域,具体地涉及一种可维护再生的锂浆料电池系统。
背景技术
锂浆料电池是一种新型高能电池,其电极片内部的导电浆料含有一定比例在电解液中悬浮或沉淀的导电颗粒,当电池受到外部冲击或震荡时,由于此部分导电颗粒没有粘接固定,因此可以在电解液中移动,并形成动态的导电网络。锂浆料电池中的导电浆料可以避免传统锂电池电极材料脱落或松动造成的电池容量下降问题和循环寿命衰减问题。
然而,锂浆料电池在长期使用过程中可能会出现如下问题:(1)锂浆料电池使用过程中产生的副反应会导致电解液逐渐失效,电极活性材料甚至集流体表面由于副反应而生成的SEI膜会不断增厚,这将导致锂浆料电池内阻增加、循环寿命下降;(2)锂浆料电池使用过程中产生的副反应会消耗电解液,导致电池内部参与电化学反应的电解液过少,影响锂离子在电池中的传导,进而降低电池性能;(3)锂浆料电池使用过程中,一方面电池过充过放或发生副反应可能导致电池胀气并致使壳体内气压偏高,另一方面由于长期使用可能导致电池壳体内气压降低而因此无法起到气封作用并进而导致电池的安全性和密封 性下降。基于锂浆料电池的自身特性,可以通过维护再生的方式延长电池寿命,提高电池性能。
发明内容
针对以上存在的问题,本发明提供一种锂浆料电池系统,该锂浆料电池系统包括锂浆料电池以及用于锂浆料电池的维护再生设备。锂浆料电池与维护再生设备可以通过锂浆料电池的顶盖对接装置和维护再生设备的设备对接装置方便地进行对接,用以将维护再生设备的气体储罐的气体或液体储罐的液体注入锂浆料电池中或者将锂浆料电池中的气体或液体排出至维护再生设备的气体回收储罐或液体回收储罐中,因此可以对锂浆料电池进行注液、补液、换液、注气以及排气等操作,从而提高电池的使用性能、安全性和密封性,延长电池寿命,实现锂浆料电池的维护以及再生。
本发明提供的技术方案如下:
根据本发明提供一种锂浆料电池系统,该锂浆料电池系统包括锂浆料电池以及用于锂浆料电池的维护再生设备。其中,锂浆料电池包括:壳体,该壳体包括顶盖和下壳体;电芯,该电芯容置于壳体中;顶盖对接装置,该顶盖对接装置设置于顶盖上,顶盖对接装置设有顶盖第一端口和顶盖第二端口。其中,维护再生设备包括:气体储罐和液体储罐,该气体储罐和液体储罐分别用于存储气体和液体;气体回收储罐和液体回收储罐,该气体回收储罐和液体回收储罐分别用于存储从锂浆料电池回收的气体和液体;设备对接装置,该设备对接装置设有设备第一端口和设备第二端口,顶盖第一端口能够与设备第一端口对接并且顶盖第二端口能够与设备第二端口对接,用以将气体储罐的气体或液体储罐中的液体注入锂浆料电池中或者将锂浆料电池中的气体或液体排出至气体回收储罐或液体回收储罐中。由此,可以通过顶盖对接装置和设备对接装置的方便对接,利用维护再生设备快速、简便地对锂浆料电池进行换液、补液、注气、排气等维护再生操作。应当指出,本文中使用的“第一”、“第二”等词仅是为了便于说明,而不起到任何限制的作用。
锂浆料电池的电芯由交叉层叠的多个正极片和负极片以及位于正极片与负极片之间的隔离层组成。在正极片中可设有正极浆料,在负极片中可设有负 极浆料或设有含锂金属体,其中,非粘接固定的正极活性导电颗粒和/或非粘接固定的负极储锂导电颗粒能够在电解液中移动并分别形成正极浆料和/或负极浆料。正极活性导电颗粒占正极浆料的质量比可以为10%~90%、优选地为15%~80%,负极储锂导电颗粒占负极浆料的质量比可以为10%~90%、优选地为15%~80%。正极活性导电颗粒平均粒径可以为0.05μm~500μm,正极活性材料与导电剂的质量比可以为20~98:80~2;负极储锂导电颗粒平均粒径可以为0.05μm~500μm,负极储锂活性材料与导电剂的质量比可以为20~98:80~2。正极活性材料可以为磷酸铁锂、磷酸锰锂、硅酸锂、硅酸铁锂、硫酸盐化合物、硫碳复合物、硫单质、钛硫化合物、钼硫化合物、铁硫化合物、掺杂锂锰氧化物、锂钴氧化物、锂钛氧化物、锂钒氧化物、锂镍锰氧化物、锂镍钴氧化物、锂镍钴铝氧化物、锂镍铝氧化物、锂镍钴锰氧化物、锂铁镍锰氧化物中的一种或多种。负极储锂活性材料可以为铝基合金、硅基合金、锡基合金、锗基合金、锂钛氧化物、锂硅氧化物、金属锂粉和石墨中的一种或多种。导电剂可以为碳黑、科琴黑、石墨烯、碳纳米管、碳纤维、无定形碳、金属导电颗粒和金属导电纤维中的一种或几种。金属导电颗粒或者纤维的材料可为铝、不锈钢或银等。含锂金属体的材料可以为金属锂或锂基合金,含锂金属体的厚度优选为0.001mm~2mm。含锂金属体可以为单层结构或多层结构。锂基合金可以是Li-Al、Li-Si、Li-Mg、Li-Sn、Li-Bi、Li-Sb等,可以是二元、三元或者是多元合金,合金中可包括Mg、Ca、Al、Si、Ge、Sn、Pb、As、Sb、Bi、Pt、Ag、Au、Zn、Cd、Hg等可与锂进行固溶和/或加成反应的元素,其中非锂元素的含量不大于50%。在含锂金属体为多层结构的情况下,各层的材料可以相同或可以不同。
在顶盖对接装置和设备对接装置的对接过程中,需将顶盖对接装置的顶盖第一端口和顶盖第二端口分别与设备对接装置的设备第一端口和设备第二端口进行对接。其中,顶盖第一端口可包括第一开口和第一开口启闭机构,第一开口贯穿顶盖,第一开口启闭机构连接于第一开口内用以在第一开口内形成流体通道或切断第一开口内的流体通道;顶盖第二端口可包括第二开口和第二开口启闭机构,第二开口贯穿顶盖,第二开口启闭机构连接于第二开口内用以在第二开口内形成流体通道或切断第二开口内的流体通道;设备第一端口可包括 第一安装孔和第一触发机构,第一安装孔与第一开口的位置相对应,第一触发机构连接于第一安装孔内;设备第二端口可包括第二安装孔和第二触发机构,第二安装孔与第二开口的位置相对应,第二触发机构连接于第二安装孔内,第一触发机构和第二触发机构能够分别触发第一开口启闭机构和第二开口启闭机构用以单独或同时地开启第一开口启闭机构和第二开口启闭机构从而在顶盖第一端口与设备第一端口之间和/或在顶盖第二端口与设备第二端口之间形成流体连通,并且第一触发机构和第二触发机构能够分别触发第一开口启闭机构和第二开口启闭机构用以单独或同时地关闭第一开口启闭机构和第二开口启闭机构从而在顶盖第一端口与设备第一端口之间和/或在顶盖第二端口与设备第二端口之间切断流体连通。也就是说,第一开口启闭机构和第二开口启闭机构通常处于关闭的状态,只有通过触发机构开启第一开口启闭机构和第二开口启闭机构后才能够形成流体通道。第一触发机构、第二触发机构与第一开口启闭机构、第二开口启闭机构的位置、结构等分别相应设置。
顶盖对接装置还可包括顶盖对接装置接合部,顶盖对接装置接合部为从顶盖向上延伸并连续围绕顶盖第一端口和顶盖第二端口的外壁,在顶盖对接装置接合部上设有第一凹槽并在第一凹槽中设有第一密封件,第一凹槽可以设置于顶盖对接装置接合部的顶面或侧壁上。相应地,设备对接装置还可包括设备对接装置接合部,设备对接装置接合部为连续围绕设备第一端口和设备第二端口的外壁并且能够与顶盖对接装置接合部接合或断开。当顶盖对接装置接合部与设备对接装置接合部对接时形成腔体并且腔体能够抽真空或者充入惰性气体或阻燃气体,通过第一密封件形成密封从而防止外部的水汽和空气进入腔体中。顶盖对接装置接合部和设备对接装置接合部均可为连续外壁,当顶盖对接装置与设备对接装置对接时,通过顶盖对接装置接合部和设备对接装置接合部形成容置第一开口启闭机构、第二开口启闭机构、第一触发机构和第二触发机构的腔体并且通过密封结构实现了顶盖对接装置接合部与设备对接装置接合部构成的内部腔体与外界的密封。由于锂浆料电池的注液、换液、补气、排气等操作对氧气和水汽的含量具有一定要求,因此在不使用真空箱等辅助设备的情况下,可通过由顶盖对接装置接合部和设备对接装置接合部形成的腔体实现与外界的隔离。优选地,可通过设备第一端口/第二端口或设于设备对接装置 上的独立的接口对上述腔体抽真空、注入惰性气体或阻燃气体,从而进一步确保维护再生操作的安全性。作为替代或者为了进一步地确保密封,在第一触发机构和第二触发机构上可分别设有插接内壁以及围绕插接内壁的外侧设置的第二凹槽,在第二凹槽内可设有第二密封件;在第一开口启闭机构和第二开口启闭机构上可分别设有插接外壁以及位于插接外壁的内孔中的凸台部,在凸台部上可设有第三密封件。第一开口启闭机构和第二开口启闭机构的插接外壁能够插入第二凹槽并通过第二密封件形成密封,并且第一触发机构和第二触发机构的插接内壁能够抵接于凸台部并通过第三密封件形成密封,因此可以在顶盖对接装置和设备对接装置中形成多重密封。顶盖对接装置接合部和设备对接装置接合部的对接密封与触发机构和开口启闭机构的对接密封可以同步或分步进行。换句话说,在顶盖对接装置接合部和设备对接装置接合部对接密封的同时触发机构和开口启闭机构进行对接密封,或者在顶盖对接装置接合部和设备对接装置接合部对接密封之后触发机构和开口启闭机构再进行对接密封。
设备对接装置接合部与顶盖对接装置接合部的连接方式可以为螺纹连接、插接、卡接等。在螺纹连接的情况下,设备对接装置接合部和顶盖对接装置接合部为圆筒或圆柱形且外径一致,设备对接装置接合部和顶盖对接装置接合部都具有外螺纹,在设备对接装置接合部或顶盖对接装置接合部的外侧可设有连接圈并且连接圈具有内螺纹,通过旋转连接圈能够使得连接圈移动至设备对接装置接合部与顶盖对接装置接合部的连接处并对设备对接装置接合部和顶盖对接装置接合部形成连接。通过连接圈的位置移动可以实现设备对接装置接合部与顶盖对接装置接合部的连接或断开。在插接的情况下,设备对接装置接合部具有凹进部,该凹进部的形状与顶盖对接装置接合部的形状相匹配使得凹进部能够与顶盖对接装置接合部形成插接,从而对设备对接装置接合部和顶盖对接装置接合部形成连接。换句话说,顶盖对接装置接合部为具有一定厚度的竖直壁,设备对接装置接合部的凹进部的宽度和形状与竖直壁的厚度和形状相对应,使得竖直壁能够紧密插入凹进部中并形成插接。在卡接的情况下,设备对接装置接合部的内表面设有卡件/卡槽,顶盖对接装置接合部的外表面设有卡槽/卡件,卡件和卡槽能够卡合从而对设备对接装置接合部和顶盖对接装置接合部形成连接。卡件可以是可伸缩的卡件或者卡件可相对于卡槽转动,从而形 成卡接。设备对接装置接合部与顶盖对接装置接合部的连接方式并不限于上述方式。
设备对接装置和顶盖对接装置的触发机构和开口启闭机构可以是顶针式、迷宫式、电磁式或其他形式的机构。在采用顶针式机构的情况下,第一触发机构和第二触发机构可分别包括能够移动的顶块,第一开口启闭机构和第二开口启闭机构可分别包括顶针、挡块和弹簧,顶块能够推动顶针和挡块并在第一开口启闭机构与第一触发机构中形成流体通道和/或在第二开口启闭机构与第二触发机构中形成流体通道,通过弹簧能够迫使顶针和挡块复位并切断流体通道。第一触发机构和第二触发机构中的顶块可通过控制装置或手动的方式启动,第一触发机构和第二触发机构可单独启动或同时启动。具体地讲,第一开口启闭机构和第二开口启闭机构的顶针与挡块固定连接并且挡块与弹簧固定连接,挡块可顶住或离开开口启闭机构的内孔中设置的凸台部用以关闭或打开开口启闭机构中的内孔。当顶块推动顶针时,顶针带动挡块离开凸台部并进而压缩弹簧,同时形成流体通道;当顶块收回时,弹簧推动挡块和顶针复位并顶住开口启闭机构内孔中的凸台部,从而切断流体通道。在采用迷宫式机构的情况下,第一触发机构和第二触发机构可分别包括能够转动的触发机构柱体。触发机构柱体设有触发机构通路和插接部,第一开口启闭机构和第二开口启闭机构均可设有转动启闭机构柱体和固定启闭机构柱体,转动启闭机构柱体设有第一开口启闭机构通路和插接孔并且固定启闭机构柱体设有第二开口启闭机构通路。在插接部插入插接孔的情况下触发机构通路与第一开口启闭机构通路流体连通,触发机构柱体能够带动转动启闭机构柱体转动使得触发机构通路、第一开口启闭机构通路能够与第二开口启闭机构通路流体连通并形成流体通道;并且触发机构柱体能够带动转动启闭机构柱体继续转动使得触发机构通路、第一开口启闭机构通路能够与第二开口启闭机构通路错位并切断流体通道。
为了防止顶盖对接装置与设备对接装置的反接,造成安全隐患,提出如下防反接方式:顶盖对接装置设有防反接部,该防反接部为凸起状或凹进状,顶盖对接装置的凸起状或凹进状的防反接部能够与设备对接装置的凹进状或凸起状的防反接部相配合从而防止第一开口启闭机构和第二开口启闭机构与第一触发机构和第二触发机构反接;或者,顶盖对接装置设有磁铁并且设备对接 装置的相应位置设有极性相反的磁铁,通过相对应位置的磁铁相互吸引从而防止第一开口启闭机构和第二开口启闭机构与第一触发机构和第二触发机构反接;或者,顶盖对接装置和设备对接装置的形状为非完全对称形状,非完全对称形状例如可以为三角形、梯形或五边形等,非完全对称形状的顶盖对接装置能够与非完全对称形状的设备对接装置匹配对接,从而防止第一开口启闭机构和第二开口启闭机构与第一触发机构和第二触发机构反接;或者,设备对接装置的第一触发机构和第二触发机构的尺寸不同,第一触发机构和第二触发机构能够与不同尺寸的第一开口启闭机构和第二开口启闭机构相配合从而防止第一开口启闭机构和第二开口启闭机构与第一触发机构和第二触发机构反接;或者,设备对接装置的第一触发机构和第二触发机构的颜色不同,第一触发机构和第二触发机构的颜色分别与第一开口启闭机构和第二开口启闭机构的颜色相对应从而防止第一开口启闭机构和第二开口启闭机构与第一触发机构和第二触发机构反接。
顶盖对接装置还可设有导向柱,并且设备对接装置可设有导向孔,通过将导向柱插入导向孔能够将顶盖对接装置和设备对接装置进行定位并防止顶盖对接装置接合部与设备对接装置接合部相对旋转。另外,可设置多组导向柱和导向孔,其中一组或几组导向柱和导向孔的形状与其他组导向柱和导向孔的形状不同,从而在导向的同时可以起到防反接的作用。
顶盖对接装置还可设有顶盖数据传输端口,顶盖数据传输端口与锂浆料电池的检测装置相连。设于锂浆料电池内的检测装置可以检测锂浆料电池内部的电解液液位、压力等数据。并且,设备对接装置还可设有设备数据传输端口,设备数据传输端口与设备对接装置的控制装置通过数据线或通过无线方式相连。在顶盖对接装置与设备对接装置对接的情况下,顶盖数据传输端口能够与设备数据传输端口对接,用以将检测装置检测到的数据传输至控制装置,从而对于维护再生过程中的液位、气压等进行控制。
锂浆料电池和维护再生设备的对接操作方法包括如下步骤:(1)将维护再生设备的设备对接装置的设备对接装置接合部与锂浆料电池的顶盖对接装置的顶盖对接装置接合部对准并密封连接,将顶盖对接装置的顶盖第一端口和顶盖第二端口分别与设备对接装置的设备第一端口和设备第二端口对准并密封 连接;(2)通过手动或控制装置启动设备对接装置的触发机构,在触发机构和开口启闭机构的内部形成流体通道;(3)控制维护再生设备的流体阀,通过流体通道对锂浆料电池补液、换液、注气或排气,关闭维护再生设备的流体阀;(4)通过将触发机构复位,关闭在触发机构和开口启闭机构的内部中形成的流体通道;(5)将设备对接装置从顶盖对接装置取下。
下面,将详细介绍锂浆料电池系统中的维护再生设备的具体结构组成。维护再生设备可包括主机和设备对接装置,其中气体储罐、液体储罐、气体回收储罐、液体回收储罐以及相应的流体管路和控制阀设置于主机的壳体内。维护再生设备的气体回收储罐通过第一气体管路和第一总管连接于设备第一端口或者维护再生设备的气体回收储罐通过第一气体管路和第二总管连接于设备第二端口,维护再生设备的气体储罐通过第二气体管路和第一总管连接于设备第一端口,维护再生设备的液体回收储罐通过第一液体管路和第二总管连接于设备第二端口,维护再生设备的液体储罐通过第二液体管路和第二总管连接于设备第二端口或者维护再生设备的液体储罐通过第二液体管路和第一总管连接于设备第一端口。换句话说,设备第一端口可以与气体储罐、气体回收储罐、液体储罐中的一个或多个相连,用以经由顶盖第一端口对锂浆料电池输入气体、输入液体或回收气体;设备第二端口可以与液体储罐、液体回收储罐、气体回收储罐中的一个或多个相连,用以经由顶盖第二端口对锂浆料电池输入液体、回收气体或回收液体。设备端口与储罐的连接方式可以根据实际需要灵活确定。其中,维护再生设备还可包括:第一气体控制阀,该第一气体控制阀设置于第一气体管路上并能够使得锂浆料电池中的气体经由设备第一端口、第一总管、第一气体管路或者经由设备第二端口、第二总管、第一气体管路进入气体回收储罐;第二气体控制阀,该第二气体控制阀设置于第二气体管路上并能够使得气体储罐中的气体经由第二气体管路、第一总管、设备第一端口进入锂浆料电池中;第一液体控制阀,该第一液体控制阀设置于第一液体管路上并能够使得锂浆料电池中的液体经由设备第二端口、第二总管、第一液体管路进入液体回收储罐;第二液体控制阀,该第二液体控制阀设置于第二液体管路上并能够使得液体储罐中的液体经由第二液体管路、第二总管、设备第二端口或者经由第二液体管路、第一总管、设备第一端口进入锂浆料电池中。
维护再生设备的气体储罐、液体储罐、气体回收储罐和液体回收储罐的材料可以为金属材料或绝缘耐电解液材料,金属材料可以为不锈钢、铝等,绝缘耐电解液材料可以为聚四氟乙烯、聚丙烯、聚乙烯等。气体储罐中存储有干燥气体,干燥气体可以为氮气、空气、惰性气体和六氟化硫中的一种或几种混合,优选地,干燥气体的含水量≤1ppm。第一气体管路、第二气体管路、第一液体管路、第二液体管路、第一总管和第二总管可以为刚性管或柔性管,其材料例如可以为不锈钢、铝、聚四氟乙烯、聚丙烯、聚乙烯等。第一气体控制阀、第二气体控制阀、第一液体控制阀和第二液体控制阀可以为流量控制阀,优选地上述控制阀为单向阀。
液体储罐可以仅为电解液储罐。或者,液体储罐可以包括多个储罐,例如:第一电解液储罐、清洗液储罐以及第二电解液储罐,其中,第一电解液储罐中存储电解液、清洗液储罐中存储清洗液、第二电解液储罐中存储含有SEI膜稳定和修复添加剂的电解液。第一电解液储罐、清洗液储罐以及第二电解液储罐能够通过切换阀或多个液体控制阀分别与第二液体管路连通。电解液为锂盐与溶剂的混合物,锂盐为六氟磷酸锂,溶剂可以为碳酸乙烯酯(EC)、碳酸二乙酯(DEC)、碳酸二甲酯(DMC)或碳酸甲乙酯(EMC)等;清洗液可以为酯类及碳酸酯类衍生物、醚类和酮类。具体地讲,酯类溶剂包括碳酸乙烯酯、碳酸丙烯酯、碳酸二甲酯、碳酸二乙酯、碳酸甲乙酯、碳酸甲丙酯、甲酸甲酯、甲酸乙酯、乙酸甲酯、乙酸乙酯、乙酸丙酯、丙酸乙酯、丁酸甲酯、丁酸乙酯、亚硫酸乙烯酯、亚硫酸丙烯酯、磷酸三甲酯、磷酸三乙酯和磷酸三丁酯等;碳酸酯类衍生物包括氯代碳酸乙烯酯、氟代碳酸乙烯酯、二氟代碳酸丙烯酯和三氟代碳酸丙烯酯等;醚类溶剂包括二甲氧甲烷,1,2-二甲氧乙烷、四氢呋喃、二甲基四氢呋喃、二乙二醇二甲醚、四甲基-1,3-二氧戊烷等;酮类溶剂包括丙酮等。SEI膜稳定和修复添加剂可以是如下添加剂中的一种或几种配合使用:亚硫酰基添加剂,例如:亚硫酸乙烯酯、亚硫酸丙烯酯、二甲基亚硫酸酯、二乙基亚硫酸酯、二甲亚砜等;磺酸酯类添加剂,例如1,3-丙烷磺酸内酯、1,4-丁烷磺酸内酯、甲基磺酸乙酯和甲基磺酸丁酯等;碳酸亚乙烯酯;苯甲醚或其卤代衍生物;卤代有机物,例如卤代EC、三氟乙基膦酸、氯甲酸甲酯、溴代丁内酯及氟代乙酸基乙烷等;无机添加剂,例如二氧化硫、二氧化碳、碳酸锂等。 上述添加剂与电解液配合使用,占电解液量的0.1~5%。另外,液体储罐还可以进一步包括SEI膜反应型破坏剂储罐。SEI膜反应型破坏剂例如为酸类、醇类、胺类等含有活性氢的质子溶剂。
维护再生设备可以包括抽真空装置,该抽真空装置设置于第一气体管路并能够经由设备第一端口或第二设备端口对锂浆料电池抽真空。当控制装置或手动开启第一气体控制阀时,可以利用抽真空装置经由锂浆料电池的顶盖第一端口、维护再生设备的设备第一端口将锂浆料电池中的气体泵送至气体回收储罐中;或者,可以利用抽真空装置经由锂浆料电池的顶盖第二端口、维护再生设备的设备第二端口将锂浆料电池中的气体泵送至气体回收储罐中。维护再生设备还可以包括第一液泵,该第一液泵设置于第一液体管路并能够经由设备第二端口抽取锂浆料电池中的液体。当控制装置或手动开启第一液体控制阀时,可以利用第一液泵经由锂浆料电池的顶盖第二端口、维护再生设备的设备第二端口将锂浆料电池中的液体泵送至液体回收储罐中。
维护再生设备可以包括气体驱动装置,该气体驱动装置设置于第二气体管路并经由气体驱动管路连接于液体储罐,气体驱动装置能够驱动气体储罐中的气体经由设备第一端口和锂浆料电池的顶盖第一端口进入锂浆料电池并且能够驱动气体储罐中的气体进入液体储罐并进而驱动液体储罐中的液体经由设备第二端口和锂浆料电池的顶盖第二端口或者经由设备第一端口和锂浆料电池的顶盖第一端口进入锂浆料电池。当控制装置或手动开启第二气体控制阀时,可以利用气体驱动装置将气体储罐中的气体经由设备第一端口和锂浆料电池的顶盖第一端口泵送至锂浆料电池中。当控制装置或手动开启第二液体控制阀和气体驱动管路上的控制阀时,可以利用气体驱动装置将气体储罐中的气体泵送至液体储罐中,进而将液体储罐中的液体经由设备第二端口和锂浆料电池的顶盖第二端口或者经由设备第一端口和锂浆料电池的顶盖第一端口推送至锂浆料电池中。也就是说,通过气体驱动装置既可以泵送气体储罐中的气体、又可以泵送液体储罐中的液体。在另一实施方式中,维护再生设备包括气体驱动装置和第二液泵,气体驱动装置设置于第二气体管路,气体驱动装置能够驱动气体储罐中的气体经由设备第一端口和锂浆料电池的顶盖第一端口进入锂浆料电池中,第二液泵设置于第二液体管路,第二液泵能够驱动液体储罐中的 液体经由设备第二端口和锂浆料电池的顶盖第二端口或者经由设备第一端口和锂浆料电池的顶盖第一端口进入锂浆料电池中。当控制装置或手动开启第二气体控制阀时,可以利用气体驱动装置将气体储罐中的气体经由设备第一端口和锂浆料电池的顶盖第一端口泵送至锂浆料电池中。当控制装置或手动开启第二液体控制阀时,可以利用第二液泵将液体储罐中的液体经由设备第二端口和锂浆料电池的顶盖第二端口或者经由设备第一端口和锂浆料电池的顶盖第一端口泵送至锂浆料电池中。也就是说,分别通过气体驱动装置和第二液泵完成气体储罐中的气体和液体储罐中的液体的输送。
维护再生设备还可包括第三气体管路,第三气体管路和第一总管将设备第一端口连接于气体回收储罐。在第三气体管路上可设有第三气体控制阀,当锂浆料电池中的气压大于预定气压时,锂浆料电池中的气体能够经由设备第一端口、第一总管、第三气体管路和第三气体控制阀或者经由设备第二端口、第二总管、第三气体管路和第三气体控制阀进入气体回收储罐。第三气体控制阀可以为排气阀,通过第三气体管路中的气体压力自动开启和关闭;或者,第三气体控制阀可以为电子控制阀,通过检测到的第三气体管路中的气体压力由控制装置或手动进行开启和关闭。另外,在不设有第三气体管路的情况下,锂浆料电池中的超过预定气压值的气体也可以通过第一气体管路和第一气体控制阀进入气体回收储罐。在锂浆料电池使用过程中,由于锂浆料电池单体过充过放以及电解液挥发等原因,因此在锂浆料电池中的气压将会有所上升。通过将锂浆料电池中的气体及时排出,能够有效地防止锂浆料电池因内部压力过大而发生爆炸等不安全情况发生。锂浆料电池中的预定气压范围可以根据实际需要确定,例如可以为0.15MPa~0.5MPa。
在第一总管和/或第二总管中可设有气压表,用以检测第一总管和/或第二总管中的气压。例如,第一总管的一端连接于设备第一端口,另一端可通过四通接头与第一气体管路、第二气体管路和第三气体管路相连。在第一总管和/或第二总管中可设有液压表,用以检测第一总管和/或第二总管中的液压。例如,第二总管的一端连接于设备第二端口,另一端可通过三通接头与第一液体管路和第二液体管路相连。
维护再生设备还可包括振动加热装置,通过振动加热装置能够对锂浆料电 池进行振动加热以便对锂浆料电池进行清洗或去除SEI膜。在锂浆料电池的长期使用过程中,由于副反应的发生,电解液会逐渐失效,电极活性材料甚至集流体表面由于副反应生成的SEI膜会不断增厚,这将导致锂浆料电池内阻增加、循环寿命下降。为了破坏SEI膜,可以利用振动加热装置对锂浆料电池进行高温处理、超声加热等方法去除SEI膜。另外,在锂浆料电池换液过程中,通过多次抽真空、注液和排液来对锂浆料电池进行清洗。为了使得锂浆料电池的清洗更加彻底,可以在清洗过程中利用振动加热装置对锂浆料电池进行振动并加热。
维护再生设备还可包括称重装置,通过称重装置可以对注液前及注液后的锂浆料电池进行称重,从而准确地得到锂浆料电池的注液量。另外,维护再生设备也可以通过控制注液量、传感器检测等方式准确地掌握注液量。
维护再生设备还可包括化成装置,化成装置的正极接头和负极接头可以与锂浆料电池的正极端子和负极端子电连接并能够对锂浆料电池进行充电和放电。通过化成装置,可以在锂浆料电池换液之前对锂浆料电池进行充分放电。另外,通过化成装置还可以使用高温反复充放、大电流充放、高电位过充放等方法对锂浆料电池去除SEI膜。
维护再生设备还可包括控制装置,通过控制装置能够控制第一气体控制阀、第二气体控制阀、第三气体控制阀、第一液体控制阀、第二液体控制阀、抽真空装置、气体驱动装置、第一液泵、第二液泵、振动加热装置、化成装置和监控装置的开启和关闭。而且,如上所述,控制装置能够根据锂浆料电池的检测装置所反馈的检测数据,通过维护再生设备的操作对锂浆料电池的液位、气压等进行控制。另外,维护再生设备上可设有控制面板,通过控制面板可以实现对控制装置的操作以及对各个控制阀和装置的手动操作。
锂浆料电池可以具有传统的锂浆料电池结构,例如将锂浆料电池的电芯放置于锂浆料电池的壳体中。在本发明中,为了更好地实现锂浆料电池的换液,因此在锂浆料电池中还设置了排出装置。排出装置包括支撑渗流部和抽吸部,电芯设置于支撑渗流部上并且电芯的四周侧壁与支撑渗流部密封连接,在支撑渗流部上设有渗流空间以及与渗流空间流体连通的排出通道,排出通道与抽吸部的一端流体连通并且抽吸部的另一端连接于顶盖上的顶盖第二端口。电芯中 的流体向下渗流进入支撑渗流部的渗流空间中,通过从顶盖上的顶盖第二端口进行抽吸能够将支撑渗流部的渗流空间中的流体经由排出通道、抽吸部和顶盖第二端口从锂浆料电池中排出。其中,支撑渗流部既起到支撑电芯的作用、又起到渗流流体的作用。也就是说,支撑渗流部可以为板状、块状、盒状或其结合,至少其边缘部分可以对电芯进行支撑,另外其中间部分也可以通过肋条、突台等结构对电芯进行支撑。支撑渗流部的渗流空间例如可以为沟槽、孔、腔等,通过支撑渗流部上的排出通道可将支撑渗流部的渗流空间中的流体排出。抽吸部的一端与排出通道流体连通并且另一端与顶盖上的顶盖第二端口流体连通,通过利用抽吸设备从顶盖上的顶盖第二端口进行抽吸,可将从支撑渗流部的排出通道流出的流体经由抽吸部抽出。排出通道的数量可为一个或多个。
电芯的四周侧壁与支撑渗流部之间的密封连接至为重要,由此可限定出流体经由电芯向下流动的最佳流动路径,切断了电芯外部的流体通道——例如电芯的周边以及电芯与支撑渗流部之间的缝隙,从而确保了电芯内的流体可以彻底地排出,进而可以实现锂浆料电池的电芯内部的充分换液。支撑渗流部与电芯的四周侧壁的密封连接可通过密封胶、密封条或密封圈等来实现。密封胶可采用聚四氟乙烯粘结剂、高性能瞬间胶、常温固化聚四氟乙烯胶水等。另外,支撑渗流部与电芯的四周侧壁也可以通过热风焊接或热压焊接等方式来实现。支撑渗流部与电芯进行密封连接的部位可根据支撑渗流部的具体结构进行选择。其中,当支撑渗流部的顶面或部分顶面为平面结构时,电芯四周侧壁的邻近底部的部分可与支撑渗流部的顶面的平面部分密封连接;或者,当支撑渗流部设有竖直侧壁时,竖直侧壁可围绕电芯的四周设置且小于等于电芯的高度,竖直侧壁的上端部、多个部位或整个竖直侧壁可与电芯的四周侧壁密封连接;或者,当支撑渗流部设有与电芯的尺寸相适应的凹槽时,电芯能够放置于凹槽中,凹槽的侧壁可与电芯的四周侧壁密封连接。
下面,将描述不同实施方式中的支撑渗流部的具体结构,支撑渗流部的主体可以为支撑板、导流板或底座等结构。
支撑渗流部可为支撑板,在支撑板上可设有导流槽,导流槽与设于支撑板的侧壁上的排出通道流体连通,此处的导流槽即为支撑渗流部的渗流空间。导流槽可为直线型或连续弯折的形状——例如S型、波浪形、折线形等,导流槽 的数量可为一个或多个,每个导流槽的至少一端与排出通道流体连通。
支撑渗流部可设有高度为h的导流板,在导流板上设有多个倾斜沟槽,倾斜沟槽的深度由零逐渐加深并且深度小于等于导流板的高度h。此处的导流板和上述的支撑板的区别在于,导流板具有对流体导流的作用,该作用可以通过设置于导流板上的倾斜沟槽来实现。通过倾斜沟槽可将流体全部引至导流板的一端并排出,因此倾斜沟槽可作为排出通道而无需在导流板侧壁上设置单独的排出通道。另外,倾斜沟槽也作为渗流空间。
支撑渗流部可设有高度为h的导流板,导流板的上表面为会聚于一点的倾斜面,优选地,会聚点位于导流板的一条边上并且会聚点的高度小于导流板的高度h。例如,倾斜面可以为圆锥面的一部分,圆锥面的顶点作为上述会聚点;或者,倾斜面可以为多个三角形倾斜面,多个三角形倾斜面中的每个三角形的一个顶点均会聚于上述会聚点。此处的倾斜面上方的空间既可以作为渗流空间、又可以作为排出通道。
支撑渗流部可仅包括上述导流板。但是,当导流板由于其倾斜沟槽较多或倾斜面较大而导致无法对电芯进行稳定支撑时,支撑渗流部还可设有渗流板。渗流板可设置于导流板的上面并且固定连接于导流板,在渗流板上可设有多个通孔,电芯内的流体能够通过渗流板上的通孔流至导流板并经由导流板的导流从而进入抽吸部中。渗流板既可以对电芯进行稳定地支撑、又可以使得电芯内的流体经由渗流板向下渗流。在支撑渗流部包括位于下方的导流板和位于上方的渗流板的情况下,电芯的四周侧壁密封连接于渗流板并且渗流板和导流板的四周边缘也进行密封连接。
支撑渗流部可为底座,底座包括位于底座四周边缘的突出的底座侧壁、位于底座侧壁内侧的支撑台以及位于底座中部的导流腔(渗流空间)。优选地,导流腔的底面的中心部分高于边缘部分并且低于支撑台的高度。另外,导流腔的底面也可以是上述导流板的上表面的任意结构或其结合。电芯能够密封连接于支撑台上,导流腔内的流体能够通过设于支撑台和底座侧壁上的排出通道流出。
抽吸部可以为柔性管、刚性管、与壳体或独立的板体一体成型的通道等结构。抽吸部的具体形式与支撑渗流部的排出通道的结构相关。如果排出通道为 孔、会聚点、管状等结构,则抽吸部的一端或整个抽吸部可采用与之相对应的柔性管、刚性管或管状通道等形式;如果排出通道较宽(例如为长条形、多沟槽或排成一排的多个孔),则抽吸部的一端(例如为长条形开口)可以与整个排出通道流体连通。
抽吸部可包括竖直抽吸部和水平抽吸部,其中,竖直抽吸部可为梯形的竖直抽吸盒,水平抽吸部可为方形的水平抽吸盒,竖直抽吸盒和水平抽吸盒均为中空的盒体结构,竖直抽吸盒的较宽的下端部与支撑渗流部的排出通道连接并流体连通,水平抽吸盒的一端连接于竖直抽吸盒的顶端并且水平抽吸盒的另一端上的开口连接于顶盖的顶盖第二端口;或者,竖直抽吸部为设有例如管状竖直通道的竖直壁,水平抽吸部为设有例如管状水平通道或沟槽状水平通道的水平条,竖直壁内的竖直通道的下端部与支撑渗流部的排出通道连接并流体连通,水平条的水平通道的一端与竖直壁的竖直通道流体连通并且水平条的水平通道的另一端与顶盖的顶盖第二端口流体连通。
本发明的优势在于:
1)本发明的锂浆料电池系统具有对锂浆料电池进行注液、补液、换液、注气、排气、化成等功能,各功能模块集成化、模块化设计,有利于进行锂浆料电池的一站式维护和再生,并且可以根据锂浆料电池的需求灵活地做出针对性的维护和再生;
2)本发明的锂浆料电池系统可以具有灵活的工作模式和较高的自动化程度。既可以在锂浆料电池应用现场进行维护再生,例如锂浆料电池在电动汽车上时可以在不拆卸电池的情况下利用维护再生设备进行维护再生,也可以将维护再生设备放置在维护再生站内对锂浆料电池进行维护再生;
3)通过顶盖对接装置和设备对接装置能够快速、准确地将锂浆料电池系统的维护再生设备与所需维护的锂浆料电池进行连接和分离,操作简单、工作效率高、占用空间小、成本低;
4)可以独立地开启或关闭顶盖对接装置的多个流体通道,可以根据锂浆料电池的需求灵活地做出针对性的维护和再生,因此使得锂浆料电池系统的对接装置具有较好的灵活性;
5)通过在流体通道与外界之间设置的多重密封结构,保证了维护再生过 程中的密封性能,确保了操作安全;
6)通过限制电解液的流动路径,强制迫使电解液通过电芯流出,使得电芯在换液过程中可以完全排空并被新液浸润,极大地增强了电芯内电解液的置换率,显著地提升了换液效果;
7)渗流支撑部的渗流空间可以收集从电极片中泄露的电极活性导电颗粒,从而有效防止由于电极片的电极活性导电颗粒泄露而造成的短路。
附图说明
图1为根据本发明的锂浆料电池系统的示意图;
图2为根据本发明一实施方式的锂浆料电池的顶盖的示意图;
图3为根据本发明一实施方式的设备对接装置和顶盖对接装置的防反接结构的平面示意图,其中,图3(a)和3(b)分别示出了顶盖对接装置和设备对接装置;
图4为根据本发明一实施方式的用于锂浆料电池和维护再生设备的对接装置的局部截面图,图4(a)为设备对接装置与顶盖对接装置分开时的状态图,图4(b)为设备对接装置与顶盖对接装置对接时的状态图;
图5为根据本发明另一实施方式的用于锂浆料电池和维护再生设备的对接装置的局部截面图,其中,图5(a)为设备对接装置与顶盖对接装置分开时的状态图,图5(b)为设备对接装置与顶盖对接装置对接时的状态图;
图6为根据本发明一实施方式的维护再生设备的结构示意图;
图7为根据本发明另一实施方式的维护再生设备的结构示意图;
图8为根据本发明的锂浆料电池中的流体流动路径示意图;
图9为根据本发明一实施方式的排出装置的示意图,其中,图9(a)-(d)分别示出了排出装置整体、支撑渗流部、导流板和流体流动路径;
图10为根据本发明另一实施方式的排出装置的示意图,其中,图10(a)-(d)分别示出了排出装置整体、支撑渗流部、导流板和流体流动路径;
图11为根据本发明又一实施方式的支撑渗流部的示意图,其中,图11(a)和11(b)分别示出了支撑渗流部的分解图和整体图。
附图标记列表
1——维护再生设备
101——气压表
102——液压表
103——控制装置
105——气体回收储罐
106——气体储罐
107——液体回收储罐
108——液体储罐
109——第一总管
110——第一气体管路
111——第一气体控制阀
112——抽真空装置
113——第二气体管路
114——第二气体控制阀
115——气体驱动装置
116——第三气体管路
117——第三气体控制阀
118——第二总管
119——第一液体管路
120——第一液体控制阀
121——第一液泵
122——第二液体管路
123——第二液体控制阀
124——第二液泵
125——气体驱动管路
2——主机
3——设备对接装置
3A——设备第一端口
3B——设备第二端口
301a——第一安装孔
301b——第二安装孔
302a——第一触发机构
302b——第二触发机构
303——设备对接装置接合部
304——连接圈
305——阶梯孔
306——顶块
307——插接内壁
308——第二凹槽
309——接合孔
310——卡件
311——触发机构柱体
312——触发机构通路
313——插接部
314——导向孔
4——锂浆料电池
4a——下壳体
4b——顶盖
5a——支撑渗流部
501——排出通道
502——渗流空间
503——导流板
504——渗流板
505——通孔
506——倾斜沟槽
507——底座侧壁
508——支撑台
509——导流腔
510——竖直侧壁
5b——抽吸部
511——抽吸通道
512——竖直抽吸部
513——水平抽吸部
514——管状竖直通道
515——槽状水平通道
6——密封部分
7——顶盖对接装置
7A——顶盖第一端口
7B——顶盖第二端口
701a——第一开口
701b——第二开口
702a——第一开口启闭机构
702b——第二开口启闭机构
703——顶盖对接装置接合部
704——第一凹槽
705——顶针
706——凸台部
707——挡块
708——弹簧
709——插接外壁
710——转动开口启闭机构柱体
711——固定开口启闭机构柱体
712——第一开口启闭机构通路
713——插接孔
714——第二开口启闭机构通路
715——顶盖数据传输端口
716——导向柱
717——卡槽
8——腔体
9——电芯
具体实施方式
下面将结合附图,通过实施例对本发明做进一步说明。
图1为根据本发明的锂浆料电池系统的示意图。维护再生设备1包括主机2和设备对接装置3,其中,设备对接装置3经由流体管路连接于主机2内的液体储罐、气体储罐、液体回收储罐和气体回收储罐,通过流体阀可以控制流体的流通、流向和流速等。设备对接装置3的控制装置和操作界面可直接设置于设备对接装置3上或者可以设置于主机2上。锂浆料电池4包括电芯、下壳体4a和顶盖4b,顶盖对接装置7设置于顶盖4b上。设备对接装置3与顶盖对接装置7可以快速对接或断开,从而在锂浆料电池系统中可以实现锂浆料电池的在线维护再生操作。
图2为根据本发明一实施方式的锂浆料电池的顶盖的示意图。锂浆料电池的顶盖4b上设有顶盖对接装置7,其中顶盖对接装置7包括顶盖对接装置接合部703、顶盖第一端口7A、顶盖第二端口7B和顶盖数据传输端口715。顶盖对接装置接合部703为连续的外壁结构,其从顶盖4b的顶面向上延伸并连续围绕顶盖第一端口7A、顶盖第二端口7B和顶盖数据传输端口715,从而形成可以容纳顶盖第一端口7A、顶盖第二端口7B和顶盖数据传输端口715的腔体。顶盖数据传输端口715与锂浆料电池内部的检测装置相连,用以传输检测装置所检测到的数据。
图3为根据本发明一实施方式的设备对接装置和顶盖对接装置的防反接结构的平面示意图,其中,图3(a)示出了顶盖对接装置的俯视图,图3(b)示出了设备对接装置的仰视图。顶盖对接装置7包括两个导向柱716,其中一个导向柱的截面形状为六边形并且另一个导向柱的截面形状为三角形。设备对接装置3包括两个导向孔314,其中一个导向孔的截面形状为六边形并且另一 个导向孔的截面形状为三角形。当六边形的导向柱与六边形的导向孔对准并且三角形的导向柱和三角形的导向孔对准时,既可以起到将设备对接装置3与顶盖对接装置7快速定位对接的作用,又可以起到防止设备对接装置的第一触发机构302a、第二触发机构302b与顶盖对接装置的第一开口启闭机构702a、第二开口启闭机构702b反接的作用。
图4为根据本发明一实施方式的用于锂浆料电池和维护再生设备的对接装置的局部截面图。图4(a)为设备对接装置与顶盖对接装置分开时的状态图;图4(b)为设备对接装置与顶盖对接装置对接时的状态图,其中左侧示出的第一触发机构已启动第一开口启闭机构并形成流体通道(如图4(b)中箭头所示),右侧示出的第二触发机构未启动第二开口启闭机构并关闭流体通道。设备对接装置包括第一安装孔301a和第二安装孔301b、第一触发机构302a和第二触发机构302b以及设备对接装置接合部303,第一触发机构302a和第二触发机构302b滑动连接于第一安装孔301a和第二安装孔301b内。在设备对接装置中,设备对接装置接合部303包括围绕第一触发机构302a和第二触发机构302b的圆柱体以及套接于圆柱体上的连接圈304,在圆柱体上设有外螺纹并且在连接圈304上设有内螺纹。第一触发机构302a和第二触发机构302b包括阶梯孔305和可在阶梯孔内滑动的顶块306,通过控制装置或手动的方式可以使得顶块306在阶梯孔305内移动,阶梯孔305可以起到对顶块306限位的作用。在第一触发机构302a和第二触发机构302b上还分别设有插接内壁307以及围绕插接内壁307的外侧设置的第二凹槽308,在第二凹槽308内设有第二密封件。顶盖对接装置包括第一开口701a和第二开口701b、第一开口启闭机构702a和第二开口启闭机构702b以及顶盖对接装置接合部703,第一开口701a、第二开口701b、顶盖对接装置接合部703与锂浆料电池的顶盖一体成型,第一开口启闭机构702a和第二开口启闭机构702b的固定部分分别密封固定于第一开口701a和第二开口701b内。在顶盖对接装置中,顶盖对接装置接合部703为围绕第一开口启闭机构702a和第二开口启闭机构702b的圆筒,在顶盖对接装置接合部703上设有外螺纹并且在顶面上设有第一凹槽704和第一密封件。第一开口启闭机构702a和第二开口启闭机构702b包括顶针705、内孔、凸台部706、挡块707和弹簧708,顶针705与挡块707一体成型 并固定连接于弹簧708,在弹簧708的推力下使得挡块707抵接于凸台部706并将流体通道密封。在第一开口启闭机构702a和第二开口启闭机构702b上还可分别设有插接外壁709,另外在内孔的凸台部706的上表面可设有第三密封件。
下面,将结合图4描述对接装置的对接操作过程。首先,将设备对接装置与顶盖对接装置对接,可通过设于设备对接装置上的导向孔和设于顶盖对接装置上的导向柱完成精确定位,使得设备对接装置上的两个触发机构与顶盖对接装置上的两个开口启闭机构分别对准、设备对接装置接合部303与顶盖对接装置接合部703对准。将连接圈304移动至设备对接装置接合部303与顶块对接装置接合部703的连接处,从而将设备对接装置接合部303与顶块对接装置接合部703密封连接,利用维护再生设备的抽真空装置经由设备对接装置的触发机构中的阶梯孔对由设备对接装置接合部303和顶块对接装置接合部703形成的腔体8抽真空,之后通过控制装置控制触发机构向下滑动并与开口启闭机构密封连接。通过设于顶盖对接装置接合部703的第一凹槽704内的第一密封件,在顶盖对接装置接合部与设备对接装置接合部之间形成第一重密封;通过设于触发机构的第二凹槽308中的第二密封件,在触发机构的第二凹槽308与开口启闭机构的插接外壁709之间形成第二重密封;通过设于开口启闭机构的凸台部706上的第三密封件,在触发机构的插接内壁307与开口启闭机构的凸台部706之间形成第三重密封。启动第一触发机构302a内的顶块306,使得顶块306推动第一开口启闭机构702a的顶针705和挡块707并使得挡块707离开凸台部706,从而在第一触发机构302a内的阶梯孔305与第一开口启闭机构702a的内孔之间形成可供流体流通的流体通道。当维护再生操作完成之后,撤回第一触发机构302a内的顶块306,使得第一开口启闭机构702a的顶针705和挡块707在压缩的弹簧708的作用下复位并且使得挡块707顶住凸台部706,从而将第一开口启闭机构的内孔密封并进而切断在第一触发机构302a内的阶梯孔305与第一开口启闭机构702a的内孔之间的流体通道。将连接圈304移回原处,将设备对接装置从顶盖对接装置取下。
图5为根据本发明另一实施方式的用于锂浆料电池和维护再生设备的对接装置的局部截面图。图5(a)为设备对接装置与顶盖对接装置分开时的状 态图;图5(b)为设备对接装置与顶盖对接装置对接时的状态图,其中左侧示出的第一触发机构已启动第一开口启闭机构并形成流体通道(如图5(b)中箭头所示),右侧示出的第二触发机构未启动第二开口启闭机构并关闭流体通道。设备对接装置包括第一安装孔301a和第二安装孔301b、第一触发机构302a和第二触发机构302b以及设备对接装置接合部303,第一触发机构302a和第二触发机构302b的固定部分分别密封固定于第一安装孔301a和第二安装孔301b内。在设备对接装置中,设备对接装置接合部303包括接合孔309,在接合孔309的内壁上设有卡件310。第一触发机构302a和第二触发机构302b包括内孔和可在内孔中转动的触发机构柱体311,触发机构柱体311设有触发机构通路312和插接部313,通过控制装置或手动的方式可以使得触发机构柱体311在内孔中上下移动和转动。在第一触发机构302a和第二触发机构302b上还分别设有插接内壁307以及围绕插接内壁307的外侧设置的第二凹槽308,在第二凹槽308内设有第二密封件。顶盖对接装置包括第一开口701a和第二开口701b、第一开口启闭机构702a和第二开口启闭机构702b以及顶盖对接装置接合部703,第一开口启闭机构702a和第二开口启闭机构702b的固定部分分别密封固定于第一开口701a和第二开口701b内。在顶盖对接装置中,顶盖对接装置接合部703为围绕第一开口启闭机构702a和第二开口启闭机构702b的圆筒,在顶盖对接装置接合部703的侧面上设有卡槽717并且在顶面上设有第一凹槽704和第一密封件。第一开口启闭机构702a和第二开口启闭机构702b均设有转动开口启闭机构柱体710和固定开口启闭机构柱体711,转动开口启闭机构柱体710设有第一开口启闭机构通路712和插接孔713并且固定开口启闭机构柱体711设有第二开口启闭机构通路714,在通常的状态下,第一开口启闭机构通路712与第二开口启闭机构通路714错开(参见图5(b)中右侧的开口启闭机构)从而对开口启闭机构的内孔进行密封。在第一开口启闭机构702a和第二开口启闭机构702b上还可分别设有插接外壁709,另外在内孔的凸台部706的上表面可设有第三密封件。
下面,将结合图5描述对接装置的对接操作过程。首先,将设备对接装置与顶盖对接装置对接,可通过设于设备对接装置上的导向孔和设于顶盖对接装置上的导向柱完成精确定位,使得设备对接装置上的两个触发机构与顶盖对接 装置上的两个开口启闭机构分别对准、设备对接装置接合部与顶盖对接装置接合部对准。将设备对接装置接合部303的接合孔309套接于圆筒形的顶盖对接装置接合部703上,通过设备对接装置接合部的可伸缩的卡件310与顶盖对接装置接合部的卡槽717进行卡接,同时触发机构与开口启闭机构密封对接。经由设备对接装置上的接口(未示出)对由设备对接装置接合部303和顶盖对接装置接合部703形成的腔体8抽真空并充入惰性气体。通过设于顶盖对接装置接合部703的顶面上的第一密封件,在顶盖对接装置接合部703与设备对接装置接合部303之间形成第一重密封;通过设于触发机构的第二凹槽308中的第二密封件,在触发机构的第二凹槽308与开口启闭机构的插接外壁709之间形成第二重密封;通过设于开口启闭机构的凸台部706上的第三密封件,在触发机构的插接内壁307与开口启闭机构的凸台部706之间形成第三重密封。启动第一触发机构302a内的触发机构柱体311,使得触发机构柱体311的插接部313向下插入转动开口启闭机构柱体710的插接孔713中并且使得触发机构柱体311的触发机构通路312与转动开口启闭机构柱体710的第一开口启闭机构通路712流体连通,进而通过转动触发机构柱体311并带动转动开口启闭机构柱体710转动使得触发机构通路312、第一开口启闭机构通路712与固定开口启闭机构柱体711的第二开口启闭机构通路714流体连通,从而在第一触发机构302a内的内孔与第一开口启闭机构702a的内孔之间形成可供流体流通的流体通道。当维护再生操作完成之后,继续转动触发机构柱体311并带动转动开口启闭机构柱体710转动使得触发机构通路312、第一开口启闭机构通路712与固定开口启闭机构柱体711的第二开口启闭机构通路714错开,从而将第一开口启闭机构的内孔密封并进而切断在第一触发机构302a的内孔与第一开口启闭机构702a的内孔之间的流体通道,将触发机构柱体311的插接部313从转动开口启闭机构柱体710的插接孔713中向上移出。通过将设备对接装置接合部的可伸缩的卡件310缩回使其与顶盖对接装置接合部的卡槽717分离,将设备对接装置从顶盖对接装置取下。
图6为根据本发明一实施方式的维护再生设备的结构示意图。维护再生设备包括设备第一端口3A、抽真空装置112、气体驱动装置115、第三气体控制阀117、气体回收储罐105、气体储罐106、设备第二端口3B、第一液泵121、 液体回收储罐107和液体储罐108。设备第一端口3A经由第一总管109和第一气体管路110连接于气体回收储罐105,在第一气体管路110上设有第一气体控制阀111和抽真空装置112;设备第一端口3A经由第一总管109和第二气体管路113连接于气体储罐106,在第二气体管路113上设有第二气体控制阀114和气体驱动装置115;设备第一端口3A经由第一总管109和第三气体管路116连接于气体回收储罐105,在第三气体管路116上设有第三气体控制阀117。设备第二端口3B经由第二总管118和第一液体管路119连接于液体回收储罐107,在第一液体管路119上设有第一液体控制阀120和第一液泵121;设备第二端口3B经由第二总管118和第二液体管路122连接于液体储罐108,在第二液体管路122上设有第二液体控制阀123;液体储罐108经由气体驱动管路125连接于气体驱动装置115。在第一总管109中设有气压表101,在第二总管118中设有液压表102。通过控制装置103可以对上述控制阀、抽真空装置、气体驱动装置和液泵进行控制。
图7为根据本发明另一实施方式的维护再生设备的结构示意图。该实施方式与上述实施方式的不同之处在于设备第二端口3B经由第二总管118和第二液体管路122连接于液体储罐108,在第二液体管路122中设有第二液泵124和第二液体控制阀123。也就是说,通过第二液泵124来驱动液体储罐108中的液体,而不是通过气体驱动装置115和气体储罐106中的气体来驱动液体储罐108中的液体。
图8为根据本发明的锂浆料电池中的流体流动路径示意图。在根据本发明的锂浆料电池中,锂浆料电池可包括壳体、电芯和排出装置,壳体包括顶盖4b和下壳体4a,在顶盖4b上设有顶盖第一端口7A和顶盖第二端口7B,排出装置包括支撑渗流部5a和抽吸部5b。电芯9的四周侧壁与排出装置的支撑渗流部5a密封连接。支撑渗流部5a的排出通道501与抽吸部5b的一端流体连通并且抽吸部5b的另一端连接于顶盖上的顶盖第二端口7B。由图8中可以看出,由电芯与支撑渗流部之间的密封部分6、支撑渗流部5a的渗流空间502、支撑渗流部5a的排出通道501、抽吸部5b的抽吸通道511和顶盖第二端口7B限定出固定的流体流动路径。通过顶盖第一端口7A注入壳体内的电解液首先进入电芯9中,当利用抽吸设备从顶盖第二端口7B进行抽吸时,电芯内的电 解液向下渗流进入支撑渗流部5a的渗流空间502、经由排出通道501和抽吸部5b的抽吸通道511被排出电池壳体。在这种情况下,壳体内的电解液无法绕过电芯直接被抽吸出电池壳体,而只能经由电芯之后被排出壳体,这样可以起到对电芯进行冲洗的作用。但是应当指出,还可以在壳体内设置另一抽吸管路,该抽吸管路的一端连接于顶盖第二端口并且另一端延伸到壳体的底部,从而可以更加快捷地同时或先后对电芯和壳体内的流体进行抽吸。另外,渗流支撑部的渗流空间可以收集从电极片中泄露的电极活性导电颗粒,并在电池换液期间排出电池壳体,从而可以有效防止由于电极片的电极活性导电颗粒泄露而造成的短路。
图9为根据本发明一实施方式的排出装置的示意图,其中,图9(a)-(d)分别示出了排出装置整体、支撑渗流部、导流板和流体流动路径。如图9(a)所示,排出装置由支撑渗流部5a和抽吸部5b构成。其中,抽吸部5b包括竖直抽吸部512和水平抽吸部513,竖直抽吸部512为梯形且中空的竖直抽吸盒,水平抽吸部513为方形且中空的水平抽吸盒,竖直抽吸盒的较宽的下端部与支撑渗流部5a的宽度大致相同并且可以配合连接,水平抽吸盒的一端连接于竖直抽吸盒的顶端并且水平抽吸盒的另一端上的开口连接于顶盖的顶盖第二端口。水平抽吸盒和竖直抽吸盒可以通过装配连接到一起或者可以一体成型。如图9(b)-(c)所示,支撑渗流部为双层结构,上层为渗流板504并且下层为导流板503。渗流板504为平面结构,在渗流板504上设有多个长条形通孔505,电芯中的流体可以经由渗流板上的长条形通孔505向下渗流。在导流板503上设有多条平行的倾斜沟槽506,倾斜沟槽506从导流板503的一端向另一端逐渐倾斜,倾斜沟槽的深度范围大约为0至h,其中h为导流板的厚度。倾斜沟槽既作为可供流体从上方流入的渗流空间、又作为将渗流空间内的流体引出的排出通道。图9(d)中的箭头示出了流体的流动路径,首先电芯中的流体向下经由渗流板上的通孔505进入导流板上的倾斜沟槽中,之后倾斜沟槽中的流体向较低端流动并进入竖直抽吸盒的空腔中,随后被抽吸进入水平抽吸盒的空腔中,最后经由水平抽吸盒顶面上的开口被抽吸出电池壳体,其中竖直抽吸盒的空腔和水平抽吸盒的空腔合起来即为抽吸通道511。
图10为根据本发明另一实施方式的排出装置的示意图,其中,图10(a) -(d)分别示出了排出装置整体、支撑渗流部、导流板和流体流动路径。如图10(a)所示,排出装置由支撑渗流部5a和抽吸部5b构成。其中,抽吸部5b包括竖直抽吸部512和水平抽吸部513,竖直抽吸部512为设有管状竖直通道514的竖直壁,水平抽吸部513为设有槽状水平通道515的水平条,竖直壁的下端与支撑渗流部5a的宽度大致相同并且可以配合连接,水平条的一端连接于竖直壁的顶端并且水平条的上表面固定连接于顶盖的下表面,使得水平条上的槽状水平通道515的一端与管状竖直通道514的顶端流体连通并且水平条上的槽状水平通道515的另一端与顶盖的顶盖第二端口流体连通。水平条和竖直壁可以通过装配连接到一起或者可以一体成型。如图10(b)-(c)所示,支撑渗流部为双层结构,上层为渗流板504并且下层为导流板503。渗流板504为平面结构,在渗流板504上设有多个长条形通孔505,电芯中的流体可以经由渗流板上的长条形通孔505向下渗流。在导流板503上设有三个三角形倾斜面,三个三角形倾斜面中的每个三角形的一个顶点全部会聚于一个会聚点G,该会聚点G位于导流板的一条边上并且会聚点G的高度低于导流板的高度h。图10(d)中的箭头示出了流体的流动路径,首先电芯中的流体向下经由渗流板上的通孔505进入导流板上的由倾斜面构成的渗流空间中,之后渗流空间中的流体向会聚点G流动并进入与会聚点G流体连通的管状竖直通道514的下端,随后从管状竖直通道514被抽吸进入水平条上的槽状水平通道515中,最后经由顶盖第二端口被抽吸出电池壳体,其中由管状竖直通道514和槽状水平通道515构成抽吸通道。
图11为根据本发明又一实施方式的支撑渗流部的示意图,其中,图11(a)和11(b)分别示出了支撑渗流部的分解图和整体图。该支撑渗流部为底座的形式,底座包括底座侧壁507、支撑台508和导流腔509。导流腔509设置于支撑台508的中部,导流腔509的底面为中间高、两端低的凸面,可将导流腔中的流体导向导流腔的两侧,该凸面的最高点低于支撑台508的顶面,因此不会阻碍渗流板504平稳地安置于支撑台508的顶面上。在导流腔509的侧壁与底座侧壁507之间设有多个排出通道501,被引向导流腔两侧的流体可以经由排出通道501被抽吸出。支撑渗流部5还包括竖直侧壁510和渗流板504,此处的竖直侧壁510和渗流板504一体成型为盒状并可以固定连接于支撑台508 上,电芯可以稳固地放置于由竖直侧壁510和渗流板504构成的盒状结构中。竖直侧壁可以更好地起到维持支撑电芯的作用,竖直侧壁的上端可以与电芯的侧壁密封连接。
本发明具体实施例并非用以限定本发明。任何熟悉本领域的技术人员,在不脱离本发明技术方案范围情况下,都可利用上述揭示的方法和技术内容对本发明技术方案作出许多可能的变动和修饰,或修改为等同变化的等效实施例。因此,凡是未脱离本发明技术方案的内容,依据本发明的技术实质对以上实施例所做的任何简单修改、等同变化及修饰,均仍属于本发明技术方案保护的范围内。

Claims (30)

  1. 一种锂浆料电池系统,其特征在于,所述锂浆料电池系统包括锂浆料电池以及用于锂浆料电池的维护再生设备,
    其中,所述锂浆料电池包括:壳体,所述壳体包括顶盖和下壳体;电芯,所述电芯容置于所述壳体中;顶盖对接装置,所述顶盖对接装置设置于所述顶盖上,所述顶盖对接装置设有顶盖第一端口和顶盖第二端口,
    其中,所述维护再生设备包括:气体储罐和液体储罐,所述气体储罐和液体储罐分别用于存储气体和液体;气体回收储罐和液体回收储罐,所述气体回收储罐和液体回收储罐分别用于存储从所述锂浆料电池回收的气体和液体;设备对接装置,所述设备对接装置设有设备第一端口和设备第二端口,所述顶盖第一端口能够与所述设备第一端口对接并且所述顶盖第二端口能够与所述设备第二端口对接,用以将所述气体储罐的气体或所述液体储罐中的液体注入所述锂浆料电池中或者将所述锂浆料电池中的气体或液体排出至所述气体回收储罐或液体回收储罐中。
  2. 根据权利要求1所述的锂浆料电池系统,其中,所述顶盖第一端口包括第一开口和第一开口启闭机构,所述第一开口贯穿所述顶盖,所述第一开口启闭机构连接于所述第一开口内用以在所述第一开口内形成流体通道或切断所述第一开口内的流体通道;所述顶盖第二端口包括第二开口和第二开口启闭机构,所述第二开口贯穿所述顶盖,所述第二开口启闭机构连接于所述第二开口内用以在所述第二开口内形成流体通道或切断所述第二开口内的流体通道;所述设备第一端口包括第一安装孔和第一触发机构,所述第一安装孔与所述第一开口的位置相对应,所述第一触发机构连接于所述第一安装孔内;所述设备第二端口包括第二安装孔和第二触发机构,所述第二安装孔与所述第二开口的位置相对应,所述第二触发机构连接于所述第二安装孔内,所述第一触发机构和第二触发机构能够分别触发所述第一开口启闭机构和第二开口启闭机构用以单独或同时地开启所述第一开口启闭机构和第二开口启闭机构从而在所述顶盖第一端口与所述设备第一端口之间和/或在所述顶盖第二端口与所述设备第二端口之间形成流体连通,并且所述第一触发机构和第二触发机构能够分别 触发所述第一开口启闭机构和第二开口启闭机构用以单独或同时地关闭所述第一开口启闭机构和第二开口启闭机构从而在所述顶盖第一端口与所述设备第一端口之间和/或在所述顶盖第二端口与所述设备第二端口之间切断流体连通。
  3. 根据权利要求1所述的锂浆料电池系统,其中,所述顶盖对接装置还包括顶盖对接装置接合部,所述顶盖对接装置接合部为从所述顶盖向上延伸并连续围绕所述顶盖第一端口和顶盖第二端口的外壁,在所述顶盖对接装置接合部上设有第一凹槽并在所述第一凹槽中设有第一密封件,
    其中,所述设备对接装置还包括设备对接装置接合部,所述设备对接装置接合部为连续围绕所述设备第一端口和设备第二端口的外壁并且能够与所述顶盖对接装置接合部接合或断开,当所述顶盖对接装置接合部与所述设备对接装置接合部对接时形成腔体并且所述腔体能够抽真空或者充入惰性气体或阻燃气体,通过所述第一密封件形成密封从而防止外部的水汽和空气进入所述腔体中。
  4. 根据权利要求3所述的锂浆料电池系统,其中,所述设备对接装置接合部和所述顶盖对接装置接合部都具有外螺纹,在所述设备对接装置接合部或所述顶盖对接装置接合部的外侧设有连接圈并且所述连接圈具有内螺纹,通过旋转所述连接圈能够使得所述连接圈移动至所述设备对接装置接合部与所述顶盖对接装置接合部的连接处并对所述设备对接装置接合部和所述顶盖对接装置接合部形成连接。
  5. 根据权利要求3所述的锂浆料电池系统,其中,所述设备对接装置接合部具有凹进部,所述凹进部的形状与顶盖对接装置接合部的形状相匹配使得所述凹进部能够与所述顶盖对接装置接合部形成插接,从而对所述设备对接装置接合部和所述顶盖对接装置接合部形成连接。
  6. 根据权利要求3所述的锂浆料电池系统,其中,所述设备对接装置接合部的内表面设有卡件,所述顶盖对接装置接合部的外表面设有卡槽,所述卡件和所述卡槽能够卡合从而对所述设备对接装置接合部和所述顶盖对接装置接合部形成连接。
  7. 根据权利要求2所述的锂浆料电池系统,其中,在所述第一触发机构和第二触发机构上分别设有插接内壁以及围绕所述插接内壁的外侧设置的第二凹槽,在所述第二凹槽内设有第二密封件;在所述第一开口启闭机构和第二开口启闭机构上分别设有插接外壁、位于所述插接外壁内的内孔以及位于内孔中的凸台部,在所述凸台部上设有第三密封件,
    其中,所述第一触发机构和第二触发机构的插接内壁能够抵接于所述凸台部并通过所述第三密封件形成密封,并且所述第一开口启闭机构和第二开口启闭机构的插接外壁能够插入所述第二凹槽并通过所述第二密封件形成密封。
  8. 根据权利要求7所述的锂浆料电池系统,其中,所述第一触发机构和第二触发机构分别包括能够移动的顶块,所述第一开口启闭机构和第二开口启闭机构分别包括顶针、与所述顶针相连并与所述凸台部抵接的挡块以及与所述挡块相连的弹簧,所述顶块能够推动所述顶针并进而推动所述挡块离开所述凸台部从而在所述第一开口启闭机构与所述第一触发机构中形成流体通道和/或在所述第二开口启闭机构与所述第二触发机构中形成流体通道,通过所述弹簧能够迫使所述顶针和挡块复位并切断流体通道。
  9. 根据权利要求2所述的锂浆料电池系统,其中,所述第一触发机构和第二触发机构分别包括能够转动的触发机构柱体,所述触发机构柱体设有触发机构通路和插接部,所述第一开口启闭机构和第二开口启闭机构均设有转动开口启闭机构柱体和固定开口启闭机构柱体,所述转动开口启闭机构柱体设有第一开口启闭机构通路和插接孔并且所述固定开口启闭机构柱体设有第二开口启闭机构通路,在所述插接部插入所述插接孔的情况下所述触发机构通路与所述第一开口启闭机构通路流体连通,所述触发机构柱体能够带动所述转动开口启闭机构柱体转动使得所述触发机构通路、所述第一开口启闭机构通路能够与所述第二开口启闭机构通路流体连通并形成流体通道,并且所述触发机构柱体能够带动所述转动开口启闭机构柱体继续转动使得所述触发机构通路、所述第一开口启闭机构通路能够与所述第二开口启闭机构通路错位并切断流体通道。
  10. 根据权利要求2所述的锂浆料电池系统,其中,所述顶盖对接装置设有防反接部,所述防反接部为凸起状或凹进状,所述顶盖对接装置的凸起状或 凹进状的防反接部能够与所述设备对接装置的凹进状或凸起状的防反接部相配合从而防止所述第一开口启闭机构和第二开口启闭机构与所述第一触发机构和第二触发机构反接;或者,
    所述顶盖对接装置设有磁铁并且所述设备对接装置的相应位置设有极性相反的磁铁,通过相对应位置的磁铁相互吸引从而防止所述第一开口启闭机构和第二开口启闭机构与所述第一触发机构和第二触发机构反接;或者,
    所述顶盖对接装置和所述设备对接装置的形状为非中心对称形状,所述非中心对称形状为三角形、梯形或五边形,非中心对称形状的所述顶盖对接装置能够与非中心对称形状的所述设备对接装置匹配对接,从而防止所述第一开口启闭机构和第二开口启闭机构与所述第一触发机构和第二触发机构反接;或者,
    所述设备对接装置的第一触发机构和第二触发机构的尺寸不同,所述第一触发机构和第二触发机构能够与不同尺寸的所述第一开口启闭机构和第二开口启闭机构相配合从而防止所述第一开口启闭机构和第二开口启闭机构与所述第一触发机构和第二触发机构反接;或者,
    所述设备对接装置的第一触发机构和第二触发机构的颜色不同,所述第一触发机构和第二触发机构的颜色分别与所述第一开口启闭机构和第二开口启闭机构的颜色相对应从而防止所述第一开口启闭机构和第二开口启闭机构与所述第一触发机构和第二触发机构反接。
  11. 根据权利要求1至10中任一项所述的锂浆料电池系统,其中,所述顶盖对接装置设有导向柱,并且所述设备对接装置设有导向孔,通过将所述导向柱插入所述导向孔能够将所述顶盖对接装置和所述设备对接装置进行定位。
  12. 根据权利要求1至10中任一项所述的锂浆料电池系统,其中,所述锂浆料电池包括检测装置,所述检测装置设置于所述锂浆料电池的壳体内,所述维护再生设备包括控制装置,在所述顶盖对接装置上设有顶盖数据传输端口,所述顶盖数据传输端口与所述锂浆料电池的检测装置相连,并且,在所述设备对接装置上设有设备数据传输端口,所述设备数据传输端口与所述设备对接装置的控制装置相连,所述顶盖数据传输端口能够与所述设备数据传输端口 对接用以将所述检测装置检测的数据传输至所述控制装置。
  13. 根据权利要求1至10中任一项所述的锂浆料电池系统,其中,所述维护再生设备的气体回收储罐通过第一气体管路和第一总管连接于所述设备第一端口或者所述维护再生设备的气体回收储罐通过第一气体管路和第二总管连接于所述设备第二端口,所述维护再生设备的气体储罐通过第二气体管路和所述第一总管连接于所述设备第一端口,所述维护再生设备的液体回收储罐通过第一液体管路和第二总管连接于所述设备第二端口,所述维护再生设备的液体储罐通过第二液体管路和所述第二总管连接于所述设备第二端口或者所述维护再生设备的液体储罐通过第二液体管路和所述第一总管连接于所述设备第一端口,
    其中,所述维护再生设备还包括:第一气体控制阀,所述第一气体控制阀设置于所述第一气体管路上并能够使得所述锂浆料电池中的气体经由所述设备第一端口、所述第一总管、所述第一气体管路或者经由所述设备第二端口、所述第二总管、所述第一气体管路进入所述气体回收储罐;第二气体控制阀,所述第二气体控制阀设置于所述第二气体管路上并能够使得所述气体储罐中的气体经由所述第二气体管路、所述第一总管、所述设备第一端口进入所述锂浆料电池中;第一液体控制阀,所述第一液体控制阀设置于所述第一液体管路上并能够使得所述锂浆料电池中的液体经由所述设备第二端口、所述第二总管、所述第一液体管路进入所述液体回收储罐;第二液体控制阀,所述第二液体控制阀设置于所述第二液体管路上并能够使得所述液体储罐中的液体经由所述第二液体管路、所述第二总管、所述设备第二端口或者经由所述第二液体管路、所述第一总管、所述设备第一端口进入所述锂浆料电池中。
  14. 根据权利要求13所述的锂浆料电池系统,其中,所述液体储罐包括第一电解液储罐、清洗液储罐以及第二电解液储罐,所述第一电解液储罐中存储电解液、所述清洗液储罐中存储清洗液并且所述第二电解液储罐中存储含有SEI膜稳定和修复添加剂的电解液,所述第一电解液储罐、清洗液储罐以及第二电解液储罐能够通过切换阀或液体控制阀分别与所述第二液体管路连通,电解液为锂盐与溶剂的混合物;清洗液为酯类及碳酸酯类衍生物清洗剂、醚类清 洗剂或酮类清洗剂;SEI膜稳定和修复添加剂为如下添加剂中的一种或几种配合使用:亚硫酰基添加剂、磺酸酯类添加剂、碳酸亚乙烯酯、苯甲醚或其卤代衍生物、卤代有机物和无机添加剂,所述无机添加剂为二氧化硫、二氧化碳或碳酸锂;
    其中,所述气体储罐中存储有干燥气体,所述干燥气体为氮气、空气、惰性气体和六氟化硫中的一种或多种混合,所述干燥气体的含水量≤1ppm。
  15. 根据权利要求13所述的锂浆料电池系统,其中,所述维护再生设备还包括抽真空装置,所述抽真空装置设置于所述第一气体管路并能够经由所述设备第一端口或所述第二设备端口对所述锂浆料电池抽真空;所述维护再生设备还包括第一液泵,所述第一液泵设置于所述第一液体管路并能够经由所述设备第二端口抽取所述锂浆料电池中的液体。
  16. 根据权利要求15所述的锂浆料电池系统,其中,所述维护再生设备还包括气体驱动装置,所述气体驱动装置设置于所述第二气体管路并经由气体驱动管路连接于所述液体储罐,所述气体驱动装置能够驱动所述气体储罐中的气体经由所述设备第一端口和所述锂浆料电池的顶盖第一端口进入所述锂浆料电池并且能够驱动所述气体储罐中的气体进入所述液体储罐并进而驱动所述液体储罐中的液体经由所述设备第二端口和所述锂浆料电池的顶盖第二端口或者经由所述设备第一端口和所述锂浆料电池的顶盖第一端口进入所述锂浆料电池。
  17. 根据权利要求15所述的锂浆料电池系统,其中,所述维护再生设备还包括气体驱动装置,所述气体驱动装置设置于所述第二气体管路,所述气体驱动装置能够驱动所述气体储罐中的气体经由所述设备第一端口和所述锂浆料电池的顶盖第一端口进入所述锂浆料电池;所述维护再生设备还包括第二液泵,所述第二液泵设置于所述第二液体管路,所述第二液泵能够驱动所述液体储罐中的液体经由所述设备第二端口和所述锂浆料电池的顶盖第二端口或者经由所述设备第一端口和所述锂浆料电池的顶盖第一端口进入所述锂浆料电池。
  18. 根据权利要求13所述的锂浆料电池系统,其中,所述维护再生设备 还包括第三气体管路,所述第三气体管路和所述第一总管将所述设备第一端口连接于所述气体回收储罐或者所述第三气体管路和所述第二总管将所述设备第二端口连接于所述气体回收储罐,在所述第三气体管路上设有第三气体控制阀,当所述锂浆料电池中的气压大于预定气压时,所述锂浆料电池中的气体能够经由所述设备第一端口、所述第一总管、所述第三气体管路和所述第三气体控制阀或者经由所述设备第二端口、所述第二总管、所述第三气体管路和所述第三气体控制阀进入所述气体回收储罐。
  19. 根据权利要求13所述的锂浆料电池系统,其中,在所述第一总管和/或第二总管中设有气压表,用以检测所述第一总管和/或第二总管中的气压;在所述第一总管和/或第二总管中设有液压表,用以检测所述第一总管和/或第二总管中的液压。
  20. 根据权利要求13所述的锂浆料电池系统,其中,所述维护再生设备包括设有正极接头和负极接头的化成装置,所述锂浆料电池包括正极端子和负极端子,所述化成装置的正极接头和负极接头能够分别与所述锂浆料电池的正极端子和负极端子电连接并能够对所述锂浆料电池进行充电和放电。
  21. 根据权利要求1至10中任一项所述的锂浆料电池系统,其中,所述锂浆料电池还设有排出装置,所述排出装置设置于所述锂浆料电池的壳体内,所述排出装置包括支撑渗流部和抽吸部,所述电芯设置于所述支撑渗流部上并且所述电芯的四周侧壁与所述支撑渗流部密封连接,在所述支撑渗流部上设有渗流空间以及与所述渗流空间流体连通的排出通道,所述排出通道与所述抽吸部的一端流体连通并且所述抽吸部的另一端连接于所述顶盖上的顶盖第二端口,所述电芯中的流体向下渗流进入所述支撑渗流部的渗流空间中,通过从所述顶盖上的顶盖第二端口进行抽吸能够将所述支撑渗流部的渗流空间中的流体经由所述排出通道、抽吸部和顶盖第二端口从所述锂浆料电池中排出。
  22. 根据权利要求21所述的锂浆料电池系统,其中,通过密封胶、密封条或密封圈将所述支撑渗流部与所述电芯的四周侧壁密封连接,
    其中,所述支撑渗流部的顶面为平面,电芯四周侧壁的邻近底部的部分与所述支撑渗流部的顶面密封连接;或者,
    其中,所述支撑渗流部设有竖直侧壁,所述竖直侧壁围绕所述电芯的四周设置且小于等于所述电芯的高度,所述竖直侧壁的上端部与所述电芯的四周侧壁密封连接;或者,
    其中,所述支撑渗流部设有与所述电芯的尺寸相适应的凹槽,所述电芯能够放置于所述凹槽中,所述凹槽的侧壁与所述电芯的四周侧壁密封连接。
  23. 根据权利要求21所述的锂浆料电池系统,其中,所述支撑渗流部为支撑板,在所述支撑板上设有导流槽,所述导流槽与设于所述支撑板的侧壁上的所述排出通道流体连通。
  24. 根据权利要求21所述的锂浆料电池系统,其中,所述支撑渗流部包括高度为h的导流板,在所述导流板上设有多个倾斜沟槽,所述倾斜沟槽的深度由零逐渐加深并且深度小于等于所述导流板的高度h。
  25. 根据权利要求21所述的锂浆料电池系统,其中,所述支撑渗流部包括高度为h的导流板,所述导流板的上表面为会聚于一点的倾斜面,会聚点位于所述导流板的一条边上并且所述会聚点的高度小于所述导流板的高度h。
  26. 根据权利要求24或25所述的锂浆料电池系统,其中,所述支撑渗流部还包括渗流板,所述渗流板设置于所述导流板的上面并且固定连接于所述导流板,在所述渗流板上设有多个通孔,所述电芯内的电解液能够通过所述渗流板上的通孔流至所述导流板并经由所述导流板的导流从而进入所述抽吸部中。
  27. 根据权利要求21所述的锂浆料电池系统,其中,所述支撑渗流部为底座,所述底座包括位于底座四周边缘的突出的底座侧壁、位于所述底座侧壁内侧的支撑台以及位于所述底座中部的导流腔,所述电芯能够密封连接于所述支撑台上,所述导流腔内的流体能够通过设于所述支撑台和底座侧壁上的所述排出通道流出。
  28. 根据权利要求27所述的锂浆料电池系统,其中,所述导流腔的底面的中心部分高于底面的边缘部分并且低于所述支撑台的高度。
  29. 根据权利要求21所述的锂浆料电池系统,其中,所述抽吸部为柔性管、刚性管或者与所述壳体一体成型的通道。
  30. 根据权利要求21所述的锂浆料电池系统,其中,所述抽吸部包括竖直抽吸部和水平抽吸部,
    其中,所述竖直抽吸部为梯形的竖直抽吸盒,所述水平抽吸部为方形的水平抽吸盒,所述竖直抽吸盒的较宽的下端部与所述支撑渗流部的排出通道连接并流体连通,所述水平抽吸盒的一端连接于所述竖直抽吸盒的顶端并且所述水平抽吸盒的另一端上的开口连接于所述顶盖的顶盖第二端口;或者,
    其中,所述竖直抽吸部为设有竖直通道的竖直壁,所述水平抽吸部为设有水平通道的水平条,所述竖直壁内的竖直通道的下端部与所述支撑渗流部的排出通道连接并流体连通,所述水平条的水平通道的一端与所述竖直壁的竖直通道流体连通并且所述水平条的水平通道的另一端与所述顶盖的顶盖第二端口流体连通。
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