CN115133151A - System for supplementing metal elements - Google Patents
System for supplementing metal elements Download PDFInfo
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- CN115133151A CN115133151A CN202210642104.7A CN202210642104A CN115133151A CN 115133151 A CN115133151 A CN 115133151A CN 202210642104 A CN202210642104 A CN 202210642104A CN 115133151 A CN115133151 A CN 115133151A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4235—Safety or regulating additives or arrangements in electrodes, separators or electrolyte
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/054—Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
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- Secondary Cells (AREA)
Abstract
The application discloses system for supplementing metal elements, which is characterized in that a positive electrode, a negative electrode and a diaphragm which are used as metal element sources are wound into a cylindrical winding core after being wetted by electrolyte. The surface of the soaking roller is coated with an elastic film and is in elastic extrusion contact with the surface of the pole piece of the cylindrical winding core, so that the surface indentation and extension of the pole piece can not be caused; the electrolyte overflows through the first and second liquid seepage holes to realize uniform coating of the electrolyte; and connecting the cylindrical winding core with a charging power supply cabinet for charging to complete the metal element supplement of the negative electrode. The coiled structure enables continuous replenishment of metal in batches. The cylindrical winding core is dried through the drying box body after being unwound, so that the material on the surface of the pole piece is prevented from falling off when the pole piece is continuously used. The cathode after being replenished with the metal elements can be normally put into production and use after being rewound, and the diaphragm and the anode can be repeatedly used for replenishing the metal elements for the cathode next time until the charging voltage of the last time reaches the charging cut-off voltage of the anode material.
Description
Technical Field
The application relates to the field of secondary metal ion battery application, in particular to a system for supplementing metal elements.
Background
The power secondary metal ion battery is mature to be applied to the fields of electric tricycles, electric automobiles, household energy storage and the like at present. But the endurance mileage of the device becomes a pain point and a difficult point of the whole industry. Taking a lithium ion battery as an example, when the lithium ion battery is charged for the first time, an SEI film is formed along with the consumption of lithium ions, and the effective capacity of the lithium ion battery is reduced. In order to solve the problem of lithium consumption of lithium ions during first charging, various lithium supplementing methods are provided, and the lithium supplementation of a negative electrode mainly adopts three modes: 1. adding lithium powder when preparing slurry, and coating the lithium powder on a current collector after conventional stirring; 2. covering a lithium belt on the pole piece through a rolling mechanism; 3. the dispersed lithium powder particles are scattered on the negative plate to complete rolling.
However, the lithium supplementing method has many defects, the thickness of the pole piece needs to be strictly controlled in a way that the lithium belt is combined with the pole piece through rolling, and the requirement on the rolling precision is high; the mode of spreading the lithium powder on the pole piece has higher requirements on the particle size of the lithium powder and the uniformity and stability of the spreading powder; the most serious problem is that lithium sheets and lithium powder are very active and easily cause potential safety hazards such as fire explosion and the like, and the most serious problem is the core problem that the lithium supplementing process is not applied in large batch at present. The main ways for the lithium supplement of the positive electrode are two, namely adding a small amount of lithium oxide into a positive electrode system; secondly, adding excessive lithium element in the process of synthesizing the anode material; the purpose is to store excessive lithium in the anode material, supplement lithium element consumed by the cathode with the excessive lithium in the process of first charging of the lithium ion battery, improve the first charging efficiency and further improve the cycle performance of the lithium ion battery. But the actual operation is more complicated, and the technical difficulty is higher. Secondary metal ion batteries, including but not limited to lithium ion batteries, sodium ion batteries, potassium ion batteries, calcium ion batteries, magnesium ion batteries, aluminum ion batteries, zinc ion batteries, and the like, all have problems similar to lithium ion batteries.
Disclosure of Invention
The application provides a system for supplementing metal elements, and solves the problems that in the prior art, the process of supplementing metal elements to a battery is complex and the technical difficulty is high.
In order to solve the above technical problem, the present application provides a system for supplementing metal elements, including:
the winding machine is characterized in that a cylindrical winding core placing device is arranged on one side of a discharge end of the winding machine, a charging device is electrically connected to the cylindrical winding core placing device, and an unwinder is arranged on one side of the cylindrical winding core placing device;
the winding machine comprises soaking rollers which are arranged in pairs and attached to two sides of a cylindrical roll core battery pole piece, the soaking rollers are of a hollow structure, one end of each soaking roller is provided with a liquid inlet communicated with an external electrolyte conveying pipeline, the circumference of the outer surface of each soaking roller is provided with a plurality of first liquid seepage holes, the outer surface of each soaking roller is coated with an elastic film, and the elastic film is provided with second liquid seepage holes corresponding to the first liquid seepage holes;
the cylindrical winding core placing device comprises a placing base, wherein a first placing groove is formed in the placing base, a notch is formed in the position, close to the first placing groove, of the placing base, a top cover body is clamped on the placing base, a second placing groove corresponding to the first placing groove is formed in the top cover body, a cylindrical winding core with a positive end cover disc and a negative end cover disc respectively buckled at two ends is located in a placing space formed by the first placing groove and the second placing groove, and winding core shafts at two ends of the cylindrical winding core are located at the notch;
the charging device comprises a charging power supply cabinet, and the charging power supply cabinet is connected with both the positive end cover disc and the negative end cover disc;
the decoiler includes the stoving box that is located the second process mechanism front end of rectifying, pole piece and diaphragm on the cylinder book core run through the stoving box.
Preferably, the connection part of the placing base and the top cover body is further provided with an annular sealing ring.
Preferably, the top side of the top cover body is further provided with a negative pressure port communicated with the second placing groove, the top cover body is communicated with a hose through the negative pressure port, and the other end of the hose is communicated with an air draft mechanism.
Preferably, the surface of the positive end cover disc and the surface of the negative end cover disc are both provided with a plurality of uniformly distributed strip-shaped connecting sheets, and each strip-shaped connecting sheet is in extrusion contact with the electrode of the cylindrical winding core.
Preferably, the positive terminal of the charging power supply cabinet is electrically connected with the positive end cover plate through a positive lead, and the negative terminal of the charging power supply cabinet is electrically connected with the negative end cover plate through a negative lead.
Preferably, the positive end cover disc and the negative end cover disc are both provided with lead circular holes, and the positive lead and the negative lead are respectively inserted into the corresponding lead circular holes.
Preferably, each of the first liquid permeating holes is uniformly distributed on the circumference of the outer surface of the wetting roller.
According to the technical scheme, the system for supplementing the metal elements has the advantages that the operation environment is required to be carried out in the environment with the dew point lower than-30 ℃; the surface of the soaking roller is coated with an elastic film and is in elastic extrusion contact with the surface of a pole piece of the cylindrical winding core, so that quality problems of indentation, extension and the like of the surface of the pole piece can be avoided, and the precision requirement on the soaking roller is not very high; electrolyte overflows through the first liquid permeating holes and the second liquid permeating holes to realize coating and soaking of the electrolyte, uniform soaking of the pole pieces can be effectively guaranteed, the exposed white area of the pole pieces cannot be influenced by overflow, and the winding structure can realize continuous supplement of metal elements in batches. The cylindrical winding core is connected with the charging power supply cabinet, so that the cylindrical winding core can be charged, and the electrochemical supplement process is completed. The cylindrical winding core is dried through the drying box body after being unwound, so that the material on the surface of the pole piece is prevented from falling off when the pole piece is continuously used. The negative electrode after supplementing the metal elements can be normally put into production and used after being rewound, the diaphragm and the positive electrode can be recycled for the next metal element supplementation after being rewound, and the positive electrode can be repeatedly used as a metal source electrode until the last charging voltage reaches the charging cut-off voltage of the positive electrode material.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments are briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without making any inventive changes.
Fig. 1 is a schematic structural diagram of a system for supplementing metal elements according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of alignment between a cylindrical roll core battery pole piece and a separator according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a winding machine according to an embodiment of the present invention;
FIG. 4 is a schematic view of a structure of a wetting roller according to an embodiment of the present invention;
FIG. 5 is a schematic view of an elastic membrane according to an embodiment of the present invention;
fig. 6 is a schematic view of a connection structure of the cylindrical winding core placing device, the charging device and the air draft mechanism according to the embodiment of the present invention;
FIG. 7 is a cross-sectional view of a cylindrical core placement device according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a positive end cap disc or a negative end cap disc according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of an unwinder according to an embodiment of the present invention.
In the figure: 01. a winding machine; 02. a cylindrical roll core placing device; 03. a charging device; 04. an unwinder; 5. a cathode unwinding mechanism; 6. a # 2 diaphragm unwinding mechanism; 7. a positive pole unwinding mechanism; 8. 1# diaphragm unwinding mechanism; 9. a servo deviation rectifying mechanism; 10. a tension control mechanism; 11. a first process deviation rectifying mechanism; 12. a first drive traction mechanism; 13. a soaking roller; 14. an electrolyte storage device; 15. an electrolyte outlet; 16. a liquid control valve; 17. a cutter mechanism; 18. a blowing device; 19. a gluing mechanism; 20. a cylindrical roll core; 21. a winding mandrel; 22. a liquid inlet; 23. a first weep hole; 24. an elastic film; 25. a second weep hole; 26. placing a base; 260. a first placing groove; 27. a top cover body; 270. a second placing groove; 28. an annular seal ring; 29. opening the gap; 30. a positive end cover disc; 31. a negative end cap disc; 32. a positive electrode lead; 33. a negative electrode lead; 34. a charging power supply cabinet; 35. a positive terminal; 36. a negative terminal; 37. a negative pressure port; 370. a hose; 38. an air draft mechanism; 40. a strip-shaped connecting sheet; 41. a lead wire circular hole; 42. drying the box body; 43. a second process deviation rectifying mechanism; 44. a tension control mechanism; 45. a second drive traction mechanism; 46. a positive winding mechanism; 47. a servo deviation correcting mechanism; 48. 1# membrane rewinding mechanism; 49. a negative pole rewinding mechanism; 50. 2# membrane rewinding mechanism; 1-1, negative terminal; 4-1, a first negative electrode exposed white area; 3-1, a first membrane region; 2-1, a first positive electrode exposed white area; 1-2, positive terminal; 2-2, a second anode exposed white area; 3-2, a second membrane region; 4-2, and a second cathode exposed white area.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.
The core of the application is to provide a system for supplementing metal elements, which can solve the problems of complex process and high technical difficulty in supplementing metal elements to batteries in the prior art.
FIG. 1 is a schematic structural diagram of a system for supplementing metal elements according to an embodiment of the present invention, FIG. 2 is a schematic structural diagram of alignment between a cylindrical-core battery pole piece and a separator according to an embodiment of the present invention, fig. 3 is a schematic structural view of a winding machine according to an embodiment of the present invention, fig. 4 is a schematic structural view of a wetting roller according to an embodiment of the present invention, fig. 5 is a schematic view of an elastic membrane structure according to an embodiment of the present invention, fig. 6 is a schematic view of a connection structure between a cylindrical winding core placement device and a charging device and an air draft mechanism according to an embodiment of the present invention, fig. 7 is a cross-sectional view of a cylindrical winding core placing device according to an embodiment of the present invention, fig. 8 is a schematic structural view of a positive end cover disc or a negative end cover disc according to an embodiment of the present invention, and fig. 9 is a schematic structural view of an unwinder according to an embodiment of the present invention.
Example 1 (lithium was added to the negative electrode of the battery as an example)
As shown in fig. 1 to 8, a system for supplementing a metal element includes:
the winding machine 01 is characterized in that a cylindrical winding core placing device 02 is arranged on one side of a discharge end of the winding machine 01, a charging device 03 is electrically connected to the cylindrical winding core placing device 02, and an unwinder 04 is arranged on one side of the cylindrical winding core placing device 02; the winding machine 01 is mainly used for coating the electrolyte on the anode and cathode of the cylindrical winding core 20 and the surface of the diaphragm, and the cylindrical winding core 20 is manufactured in a winding mode, and the cylindrical winding core 20 is a large-diameter full-lug cylindrical winding core.
In fig. 3, 8 is a # 1 diaphragm unwinding mechanism, 5 is a negative electrode unwinding mechanism, 6 is a # 2 diaphragm unwinding mechanism, and 7 is a positive electrode unwinding mechanism; when a pole piece after being unreeled by the negative pole unreeling mechanism 5 is taken, six tension passing rollers at the position of a tension control mechanism 10 are used for tension control adjustment, when the pole piece is taken, the edge position of the pole piece is monitored in real time by a first process deviation correcting mechanism 11, and the detected displacement offset of the pole piece is fed back to a servo deviation correcting mechanism 9 in real time to realize deviation correction in the pole piece taking process, when the pole piece is taken, the traction and conveying are realized by a first driving traction mechanism 12, when the pole piece is taken, the front surface and the back surface of the pole piece are extruded and coated with electrolyte by an infiltration roller 13, the infiltration roller 13 is connected with an electrolyte outlet 15 of an electrolyte storage device 14 through a corrosion-resistant hose, and a liquid control valve 16 is arranged for controlling the flow speed, the flow and the like of the electrolyte during coating; the functional structures and principles of the anode and the diaphragm are similar to those of the cathode; the cutter mechanism 17 is used for cutting off the pole piece and the diaphragm after the deviation of the pole piece and the diaphragm is corrected stably, the respective driving traction mechanisms sequentially pull a certain distance, the air blowing device 18 blows air through positive pressure to enable the cut pole piece to be attached to the winding core shaft 21, the adhesive tape sticking mechanism 19 cuts single-layer adhesive paper to enable the pole piece and the diaphragm to be sequentially and firmly bonded with the winding core shaft 21 through adhesive tapes, and finally main winding of the large-diameter cylindrical winding core 20 is completed.
The soaking rollers 13 are arranged in pairs, when in use, the pair of soaking rollers 13 are attached to the positions on two sides of the cylindrical core battery pole piece, the soaking rollers 13 are hollow, one end of the soaking roller 13 is provided with a liquid inlet 22 communicated with an external electrolyte transportation pipeline, the circumference of the outer surface of the soaking roller 13 is provided with a plurality of first liquid permeating holes 23, and preferably, the first liquid permeating holes 23 are uniformly distributed on the circumference of the outer surface of the soaking roller 13. The elastic film 24 is wrapped on the outer surface of the soaking roller 13, the elastic film 24 is provided with second liquid permeating holes 25, the concentration of the second liquid permeating holes 25 is greater than that of the first liquid permeating holes 23, and the size of the second liquid permeating holes 25 is smaller than that of the first liquid permeating holes 23. The surface of the soaking roller 13 is provided with the elastic film 24 which is in elastic extrusion contact with the surface of the pole piece, so that quality problems such as indentation and extension of the surface of the pole piece can be avoided, and the precision requirement on the soaking roller 13 is not very high. Electrolyte overflows through the first liquid permeating holes 23 and the second liquid permeating holes 25 to realize electrolyte coating and infiltration, can effectively ensure uniform infiltration of the pole pieces, cannot overflow to influence the white exposing area of the pole pieces, and can realize continuous lithium supplement in batches by the winding structure.
The cylindrical winding core placing device 02 mainly comprises a placing base 26 and a top cover body 27, the placing base 26 is connected with the top cover body 27 in a clamping mode, a first placing groove 260 is formed in the placing base 26, a second placing groove 270 is formed in the top cover body 27 and corresponds to the first placing groove 260, after installation, a placing space can be formed by the first placing groove 260 and the second placing groove 270, a notch 29 is formed in the position, close to the first placing groove 260, of the placing base 26, and during use, winding core shafts 21 at two ends of a cylindrical winding core 20 are located on the two notches 29, namely, the cylindrical winding core 20 is located in the placing space, and a positive end cover disc 30 and a negative end cover disc 31 are respectively buckled at two ends of the cylindrical winding core 20.
The charging device 03 mainly comprises a charging power supply cabinet 34, a positive electrode lead 32 and a negative electrode terminal 36, and when in use, the charging power cabinet 34 can be disposed at a suitable position near the cylindrical winding core placement device 02, one end of the positive lead 32 is connected to the positive terminal 35 of the charging power cabinet 34, the other end of the positive lead 32 penetrates the top cover 27 and is electrically connected to the positive end cover disc 30, one end of the negative lead 33 is connected to the negative terminal 36 of the charging power cabinet 34, the other end of the negative lead 33 penetrates the top cover 27 and is electrically connected to the negative end cover disc 31, and the cylindrical winding core 20 is charged by the charging power cabinet 34, at a certain current i and a certain time t, the electric quantity of a certain ampere hour i x t is charged into the cylindrical winding core 20, calibrating the voltage of the positive electrode of the lithium source to be used as the monitoring starting point voltage of the control parameter of the positive electrode of the lithium source which is repeatedly used next time; after the charging process is completed, the cathode is indicated to receive the lithium from the lithium source and the anode, and the electrochemical lithium supplement process is completed.
A drying box body 42 is additionally arranged at the front end of a second process deviation rectifying mechanism 43 of the unwinder 04, the structure and the working principle of the drying box body 42 can refer to the prior art, the cylindrical winding core 20 starts to unwind after tail rubber is removed, a pole piece and a diaphragm on the cylindrical winding core 20 are positioned in the drying box body 42 and dried by the drying box body 42, the second process deviation rectifying mechanism 43 monitors the edge position of the pole piece in real time, the edge detection displacement offset of the pole piece is fed back to a servo deviation rectifying mechanism 47 in real time to realize pole piece process deviation rectifying, six tension forces at a tension force control mechanism 44 pass through rollers to perform tension force control adjustment, and finally the unwound pole piece is dragged and conveyed to a positive pole winding mechanism 46 by a second driving traction mechanism 45 to finish positive pole independent rewinding, a 1# diaphragm rewinding mechanism 48, a negative pole rewinding mechanism 49 and a 2# diaphragm rewinding mechanism 50 are similar to the positive pole winding mechanism 46 in principle. Solvent on the pole pieces can be removed through the drying box body 42, and surface substances are prevented from falling off when the pole pieces are continuously used.
The invention aims at lithium supplement of the negative electrode, the positive electrode provides an electrode for a lithium source, the material of the positive electrode is preferably rich in raw materials, low in price, environment-friendly and better in safety, and lithium iron phosphate, lithium manganate and lithium-rich materials are generally selected as follows: lithium-rich compounds, nanocomposites based on conversion reactions, binary lithium compounds, and the like. The lithium supplement environment needs to be carried out in an environment with a dew point lower than minus 30 ℃; to ensure uniform lithium replenishment of the negative electrode, the width of the positive electrode material coating region should completely cover the negative electrode material coating region, and for control, two sides of the positive electrode material coating region are generally increased by 1mm or more, and as shown in fig. 2, the negative electrode end 1-1: the first cathode exposed area 4-1 exceeds the first diaphragm area 3-1 for a certain distance, and the first diaphragm area 3-1 exceeds the first anode exposed area 2-1 for a certain distance; positive electrode terminal 1-2: the second anode exposed white area 2-2 exceeds the second membrane area 3-2 for a certain distance, and the second membrane area 3-2 exceeds the second cathode exposed white area 4-2 for a certain distance. Simultaneously unwinding 1 positive pole roll A1, 1 negative pole roll B1 and 2 diaphragm rolls C1 by using a winder 01, and finally winding a large-diameter full-lug cylindrical winding core by drawing a pole piece and a diaphragm through corresponding soaking rollers 13 by a first driving traction mechanism 12; placing the cylindrical winding core 20 in the sealed cylindrical winding core placing device 02, connecting a positive terminal 35 of an external charging power supply cabinet 34 with a positive end cover disc 30 through a positive lead 32, and connecting a negative terminal 36 of the external charging power supply cabinet 34 with a negative end cover disc 31 through a negative lead 33; setting charging current, charging time and corresponding electric quantity, starting a charging power supply in the charging power supply cabinet 34, and completing the supplement of lithium elements to the negative electrode; unreeling the cylindrical winding core 20 after lithium supplement by using an unreeling mechanism 04, drying the cylindrical winding core by a drying box 42, and respectively winding 1 positive pole roll A2, 1 negative pole roll B2 and 2 diaphragm rolls C2; the negative electrode roll B2 is used for conventional battery production; the anode roll A2 can be repeatedly used, and the using times can be determined according to the amount of lithium element supplemented by the cathode, the surface density of the anode, the solid content of active substances, the utilization rate and the like; 2 separator rolls C2 can be reused and used together with the anode roll A2 for next lithium supplement; in order to improve the use times of the diaphragm roll, non-woven fabrics and diaphragms with the thickness of 20-200 um are preferentially adopted.
Preferably, an annular sealing ring 28 is further provided at the connecting position of the placing base 26 and the top cover body 27. The top side of the top cover body 27 is further provided with a negative pressure port 37 communicated with the second placing groove 270, the top cover body 27 is communicated with a hose 370 through the negative pressure port 37, and the other end of the hose 370 is communicated with the air draft mechanism 38. The cylindrical winding core 20 is completely sealed by the cylindrical winding core placing device 02, and the annular sealing ring 28 can be a corrosion-resistant annular sealing ring. Negative pressure port 37 and hose 370 clamp connection, hose 370 are corrosion-resistant hose, realize sealed effect through adjustment clamp piece elasticity, make through updraft ventilator 38 and place the space and be in the negative pressure environment, guarantee that the produced gas does not take place to leak when cylindrical roll core 20 charges, can effectively avoid causing safety, environmental protection scheduling problem.
Preferably, the surfaces of the positive end cover disc 30 and the negative end cover disc 31 are both disc-distributed uniformly distributed strip-shaped connecting sheets 40, each strip-shaped connecting sheet 40 is in extrusion contact with the electrode of the cylindrical winding core 20, stable connection is realized by increasing the contact area, and the contact resistance can be reduced; the positive end cover disc 30 and the negative end cover disc 31 are both provided with lead circular holes 41, and the positive lead 32 and the negative lead 33 are both inserted into the lead circular holes 41, so that the connection between the inner circuit of the cylindrical winding core 20 and the charging power supply in the charging power supply cabinet 34 can be conveniently and rapidly realized.
Example 2
The invention aims at sodium supplement of the cathode of the sodium ion battery, the anode provides an electrode for a sodium source, the anode material should preferably be a material with rich raw materials, low price, environmental protection and better safety, and prussian compounds, silver ion compounds and sodium-rich materials are generally selected as follows: sodium-rich compounds, nanocomposites based on conversion reactions, etc., the electrolyte may be selected from and not limited to organic solutions of sodium hexafluorophosphate. The rest is the same as example 1.
Example 3
The invention aims at magnesium supplement of the cathode of the magnesium ion battery, the anode provides an electrode for a magnesium source, the anode material should preferably be a material with rich raw materials, low price, environmental friendliness and better safety, sodium-rich compounds such as transition metal oxides, Chevrel phases (Chevrel phases), sulfides, silver ion compounds, Prussian compounds and the like are generally selected, and the electrolyte can be selected from THF (tetrahydrofuran) solutions of Grignard reagents, inorganic magnesium salt electrolytes and organic halogenated magnesium aluminate. The rest is the same as example 1.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice in the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope of the disclosure being indicated by the following claims.
It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The above-described embodiments of the present application do not limit the scope of the present application.
Claims (7)
1. A system for supplementing metallic elements, comprising:
the winding machine is characterized in that a cylindrical winding core placing device is arranged on one side of the discharge end of the winding machine and electrically connected with a charging device, and an unwinder label is arranged on one side of the cylindrical winding core placing device;
the winding machine comprises soaking rollers (13), the soaking rollers (13) are arranged in pairs, the soaking rollers (13) are attached to two sides of a cylindrical core battery pole piece, the soaking rollers (13) are of a hollow structure, one end of each soaking roller (13) is provided with a liquid inlet (22) communicated with an external electrolyte conveying pipeline, the circumference of the outer surface of each soaking roller (13) is provided with a plurality of first liquid seepage holes (23), the outer surface of each soaking roller (13) is coated with an elastic film (24), and each elastic film (24) is provided with a second liquid seepage hole (25);
the cylindrical winding core placing device comprises a placing base (26), wherein a first placing groove (260) is formed in the placing base (26), a notch (29) is formed in a position, close to the first placing groove (260), of the placing base (26), a top cover body (27) is clamped on the placing base (26), a second placing groove (270) corresponding to the first placing groove (260) is formed in the top cover body (27), a cylindrical winding core (20) with two ends respectively provided with a positive end cover disc (30) and a negative end cover disc (31) in a buckled mode is located in a placing space formed by the first placing groove (260) and the second placing groove (270), and winding core shafts (21) at two ends of the cylindrical winding core (20) are located at the notch (29);
the charging device comprises a charging power supply cabinet (34), and the charging power supply cabinet (34) is connected with both the positive end cover plate (30) and the negative end cover plate (31);
the uncoiler comprises a drying box body (42) located at the front end of the second process deviation rectifying mechanism (43), and the pole piece and the diaphragm on the cylindrical winding core (20) penetrate through the drying box body (42).
2. System for supplementing metal elements according to claim 1, characterized in that the junction of said placement base (26) and said top cover (27) is further provided with an annular sealing ring (28).
3. The system for supplementing metal elements according to claim 2, wherein the top side of the top cover body (27) is further provided with a negative pressure port (37) communicated with the second placing groove (270), the top cover body (27) is communicated with a hose (370) through the negative pressure port (37), and the other end of the hose (370) is communicated with an air draft mechanism (38).
4. The system for supplementing metal elements according to claim 1, wherein a plurality of strip-shaped connecting pieces (40) are uniformly distributed on the surfaces of the positive end cover disc (30) and the negative end cover disc (31), and each strip-shaped connecting piece (40) is in pressing contact with the electrode of the cylindrical winding core (20).
5. The system for supplementing metal elements according to claim 1, wherein a positive terminal (35) of said charging power supply cabinet (34) is electrically connected to said positive end cap plate (30) through a positive lead (32), and a negative terminal (36) of said charging power supply cabinet (34) is electrically connected to said negative end cap plate (31) through a negative lead (33).
6. The system for supplementing metal elements according to claim 5, wherein said positive electrode end cap disc (30) and said negative electrode end cap disc (31) are each provided with a lead circular hole (41), and said positive electrode lead (32) and said negative electrode lead (33) are respectively inserted into the corresponding lead circular holes (41).
7. A system for replenishing metallic elements according to claim 1, wherein each of said first weep holes (23) is uniformly distributed over the circumference of the outer surface of said wetting roller (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210642104.7A CN115133151A (en) | 2022-06-07 | 2022-06-07 | System for supplementing metal elements |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210642104.7A CN115133151A (en) | 2022-06-07 | 2022-06-07 | System for supplementing metal elements |
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| CN115133151A true CN115133151A (en) | 2022-09-30 |
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| CN202210642104.7A Pending CN115133151A (en) | 2022-06-07 | 2022-06-07 | System for supplementing metal elements |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102022004410A1 (en) | 2022-11-25 | 2024-05-29 | Mercedes-Benz Group AG | Method for impregnating an electrode with electrolyte |
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2022
- 2022-06-07 CN CN202210642104.7A patent/CN115133151A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102022004410A1 (en) | 2022-11-25 | 2024-05-29 | Mercedes-Benz Group AG | Method for impregnating an electrode with electrolyte |
| DE102022004410B4 (en) | 2022-11-25 | 2024-06-06 | Mercedes-Benz Group AG | Method for impregnating an electrode with electrolyte |
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