CN214542289U - High-capacity quick-charging battery with wetting grid type electrode - Google Patents

High-capacity quick-charging battery with wetting grid type electrode Download PDF

Info

Publication number
CN214542289U
CN214542289U CN202121023474.XU CN202121023474U CN214542289U CN 214542289 U CN214542289 U CN 214542289U CN 202121023474 U CN202121023474 U CN 202121023474U CN 214542289 U CN214542289 U CN 214542289U
Authority
CN
China
Prior art keywords
grid
electrode
battery
negative
coating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202121023474.XU
Other languages
Chinese (zh)
Inventor
戴文韬
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN202121023474.XU priority Critical patent/CN214542289U/en
Application granted granted Critical
Publication of CN214542289U publication Critical patent/CN214542289U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Landscapes

  • Battery Electrode And Active Subsutance (AREA)
  • Secondary Cells (AREA)

Abstract

A high capacity, fast-charging battery with an wetting grid electrode. The high-capacity quick-charging battery comprises a positive electrode, a negative electrode, an insulating separator arranged between the positive electrode and the negative electrode, and electrolyte; the negative electrode is an infiltration grid type electrode and comprises a negative electrode current collecting bridge frame, a grid plate and a copper grid electrode; the negative current collecting bridge frame is a grid body formed by a plurality of grids which are arranged vertically and horizontally, a grid plate is arranged on each grid, a plurality of copper grid electrodes are arranged on the two end faces of the grid plate in a fibrous manner, and each grid is formed into a battery energy storage square cavity; and a Si coating or a C coating is coated on the copper grid electrode, and the middle distance between adjacent copper grid electrodes is an expansion gap. The battery is provided with the wetting grid type electrode, so that lithium ions can be attached in a three-dimensional depth manner and flow smoothly, lithium dendrites can be prevented, the specific capacity of the battery is large, the charging speed is high, and meanwhile, the battery is long in service life and can be recycled.

Description

High-capacity quick-charging battery with wetting grid type electrode
Technical Field
The utility model relates to a high capacity battery technical field, in particular to be provided with infiltration nature grid type electrode, make lithium ion can three-dimensional depth formula adhere to and flow smoothly, and then make the battery than the capacity big and the charging speed is fast and long service life and but recycle's high capacity battery.
Background
Referring to fig. 1, a conventional battery uses AL as a positive current collecting plate 1 ', is coated with a positive coating such as LiCoO2, and uses Cu as a negative current collecting plate 2 ', is coated with a Si (or C) powder coating, and is used as a battery positive electrode, and an electrolyte and an insulating separator 3 ', 11 ' are Li ions, 12 ' are negative Si (or C) nanoparticles, a is a negative current collecting plate a surface, and B is a negative current collecting plate B surface.
The positive electrode electrochemical reaction formula during charging is as follows:
LiCoO2 = Li(1-x)CoO2 + xe-(Electron) + xLi+；
The cathode electrochemical reaction formula during charging is as follows:
xLi+ + 4Si + xe- = LixSi4；
during charging, under the action of electric field force, Li+Ions are dissociated from the positive electrode while releasing electrons, Li+Ions jump from the positive electrode coating into the electrolyte, pass through the pores of the insulating separator to reach the negative electrode, combine with electrons, and form a silicon-aluminum alloy with Si particles on the negative electrode coating.
The positive electrode electrochemical reaction formula during discharging is as follows:
Li(1-x)CoO2 + xe-(Electron) + xLi+ = LiCoO2 ；
The cathode electrochemical reaction formula during discharging is as follows:
LixSi4 = xLi+ + 4Si + xe- ；
upon discharge, Li and Si separate and release electrons to become Li+The ions then jump into the electrolyte, migrate to the cathode having low energy, pass through the gaps of the insulating separator, reach the cathode, and become LiCoO2 with bound electrons, and the lithium ions are fixed and stabilized.
The conventional battery has an electrode having a simple plate-shaped structure, and has the following disadvantages:
1. the electrode coating has less electricity storage capacity and low specific capacity;
2. li ions on the surface layer of the negative electrode are a little more, and the Li ions in the deep layer are difficult to enter;
3. during discharging, if the discharging rates of the two surfaces of the negative electrode plate A, B of the battery are different, the thermal expansion ratios of the two surfaces are different, the battery plate is bent and deformed, and the coating is bubbled and falls off, so that the performance of the battery is affected;
4. when the negative electrode 4Li and 4Si form a Li4.Si4 matrix structure, the specific capacity can be improved by tens of times, which reaches 4200mAh/g, but the volume can also expand by more than 300%, and the traditional battery coating is mainly attached to a polar plate in a planar mode and lacks expansion space, so that the negative electrode coating falls off and deforms seriously;
5. the positive and negative coatings and the polar plate metal foil are seriously adhered, so that the recycling and the reutilization are difficult, and the discarded battery electrode causes serious environmental pollution;
6. the charging resistance is large, lithium dendrite and charging memory are easy to form, and the battery is quick to age.
Disclosure of Invention
The utility model aims at solving the technical problem, provide a high capacity quick-charging battery with infiltration grid electrode, this battery is provided with infiltration grid electrode for lithium ion can be three-dimensional depth formula adhere to and flow smoothly, can prevent lithium dendrite, and then make the battery than the capacity big, charge speed is fast, this battery long service life and recycle simultaneously.
In order to solve the above-mentioned prior art problem, the technical scheme of the utility model is that:
the utility model relates to a high capacity quick-charging battery with infiltration grid type electrode, high capacity quick-charging battery includes positive pole, and negative pole, and sets up insulating barrier, and electrolyte between positive pole and negative pole, fill electrolyte between positive pole and insulating barrier, and negative pole and the insulating barrier, the positive pole includes anodal current collector, anodal coating, anodal current collector is aluminium AL, anodal coating is LiCoO 2;
the negative electrode is an infiltration grid type electrode and comprises a negative electrode current collecting bridge frame, a grid plate and a copper grid electrode;
the negative current collecting bridge frame is a grid body formed by a plurality of grids which are arranged vertically and horizontally, a grid plate is arranged on each grid, a plurality of copper grid electrodes are arranged on the two end faces of the grid plate in a fibrous manner, and each grid is formed into a battery energy storage square cavity;
the copper grid electrodes are coated with Si coatings or C coatings, and the middle distance between every two adjacent copper grid electrodes is an expansion gap;
the grid plate and the grids are also respectively provided with a plurality of through holes, the through holes are lithium ion through holes, lithium ions in the through holes can freely pass through the through holes to block coating particles, and the lithium ions of the negative electrode can be attached in a three-dimensional depth manner and smoothly flow.
Furthermore, the grid plate is vertically arranged in the grid of the negative current collecting bridge frame, two end faces of the grid plate respectively face the openings at two ends of the grid, and the copper grid electrode is perpendicular to the two end faces of the grid plate;
further, the positive current collector includes, but is not limited to, aluminum AL;
further, the positive electrode coating includes, but is not limited to, LiCoO 2;
further, the electrode used for the negative electrode includes, but is not limited to, a copper grid electrode;
further, the coating of the negative electrode includes, but is not limited to, Si coating and C coating;
furthermore, slots are formed in the grids of the negative current collecting bridge frame, and the grid plates are respectively inserted into the slots of the grids of the negative current collecting bridge frame.
The utility model relates to a high capacity quick-charging battery with infiltration grid type electrode, its beneficial effect has:
1. the battery power storage is increased by orders of magnitude: (1) the battery electrode adopts an infiltration grid type design, the planar electricity storage of the traditional battery is changed into a three-dimensional depth type electricity storage, the Li ions realize depth attachment, and the specific capacity of the battery is increased by orders of magnitude; (2) by adopting the wetting grid type electrode, Li ions and Si ions can be uniformly distributed between the electrodes, a Li4.4Si matrix structure is favorably formed, the specific capacity is improved by tens of times and can reach 4200mAh/g, an expansion gap is arranged, and when the Li ions and the Si ions form the Li4.4Si matrix structure, the volume of a negative Si coating can also expand by 300 percent, so that the coating cannot fall off;
2. the charging speed is greatly improved, lithium dendrites cannot be formed, lithium ions can be attached in a three-dimensional depth type manner and flow smoothly by adopting the wetting grid electrode, the wetting grid electrode can enable the Li ions to fill the electrode coating in an instantaneous saturation manner along the fibrous grid electrode during charging, and can enable the Li ions to quickly separate from the negative electrode coating along the fibrous grid electrode during discharging, pass through the insulating diaphragm and return to the positive electrode, sufficient discharging is ensured, and meanwhile, the formation of the lithium dendrites is avoided;
3. greatly prolonging the service life of the battery: (1) thoroughly eliminating electrode bending, falling, tearing and deformation caused by unbalanced charge and discharge on the two sides of the electrode A, B, prolonging the service life of the battery, wherein the current collecting bridge frame of the electrode is provided with through holes, Li ions can be uniformly discharged in the up-down direction, the left-right direction and the front-back direction, and bending, deformation, bubbling and falling caused by unbalanced discharge on the two sides of the battery A, B are thoroughly eliminated, (2) an expansion gap is reserved between Si coatings of the wetting grid type electrode, so that on one hand, the Li ions are uniformly distributed to form a Li4.4Si matrix structure, when the specific capacity can be improved to 4200mAh/g, the volume of a negative Si coating can also expand by 300 percent, the expansion gap ensures that the Si coatings freely expand and stretch, on the other hand, the negative Si coatings can not fall off, the Si coatings of adjacent grids can also expand to abut against each other and are tightly connected in series by the wetting grid type electrode, thereby greatly improving the service life of the battery, on the other hand, the battery is composed of n battery energy storage cavities, the wall of the battery energy storage cavity is provided with through holes, Li ions can flow freely, large-particle coating materials can only be uniformly distributed in the battery energy storage cavity and cannot fall off and move around, and the service life of the battery is greatly prolonged;
4. the battery can recycle, realize that the battery environmental protection is pollution-free, infiltration grid formula electrode buckle adopts the modularized design, the lock joint is in a plurality of energy storage square intracavity that vertical and horizontal perpendicular negative pole mass flow crane span structure encloses, can freely the dismouting, when the electrode coating on the buckle is ageing, can tear infiltration grid formula electrode buckle down the sanitization, then install again after spouting the refresh coating, thereby can renew the battery, the old coating that washs down, can come out Li ion purification with the flotation method, reuse, really realize zero pollution of battery.
Drawings
Fig. 1 is a schematic structural view of a conventional battery;
fig. 2 is a vertical cross-sectional view of a high capacity quick-charging battery (the negative current collecting bridge is a part) with an infiltrating grid electrode of the present invention;
fig. 3 is a side sectional view of a negative electrode portion of a high capacity, fast-charging battery of the present invention having an invasive grid electrode;
fig. 4 is a perspective view of the whole negative electrode current collecting bridge of the high capacity quick charging battery with the wetting grid electrode of the present invention.
Detailed Description
The invention will be further described with reference to the following examples:
example (b):
as shown in fig. 1-4, the present invention relates to a high capacity quick-charging battery with wetting grid electrode, the high capacity battery includes a positive electrode, a negative electrode, an insulating partition plate 3 disposed between the positive electrode and the negative electrode, and an electrolyte, the electrolyte is filled between the positive electrode and the insulating partition plate, and between the negative electrode and the insulating partition plate, the positive electrode includes a positive current collecting plate 1 and a positive coating, the positive current collecting plate is aluminum AL, the positive coating is LiCoO2,11 is Li, 12 is Co, 13 is O, 14 is Si;
the negative electrode is an infiltration grid type electrode and comprises a negative electrode current collecting bridge frame 2, a grid plate 4 and a copper grid electrode 5;
the negative current collecting bridge frame is a grid body formed by arranging a plurality of grids 2a in a longitudinal and transverse mode, a grid plate 4 is arranged on each grid 2a, a plurality of copper grid electrodes 5 are arranged on two end faces of each grid plate 4 in a fibrous mode, and each grid is formed into a battery energy storage square cavity;
the copper grid electrodes are coated with Si coatings, and the distance between every two adjacent copper grid electrodes is an expansion gap;
the grid plate and the grids are also respectively provided with a plurality of through holes 6, the through holes are lithium ion through holes, lithium ions in the through holes can freely pass through the through holes to block coating particles, and the lithium ions of the negative electrode can be attached in a three-dimensional depth manner and smoothly flow.
The grid plate is vertically arranged in the grid of the negative current collecting bridge frame, two end faces of the grid plate respectively face the openings at two ends of the grid, and the copper grid electrodes are perpendicular to the two end faces of the grid plate;
and the grid of the negative current collecting bridge is formed with a slot, and the grid plates are respectively inserted into the slots of the grids of the negative current collecting bridge.
The present invention has been described in detail, and it should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.

Claims (7)

1. The utility model provides a high capacity quick-charging battery with wettability grid electrode, high capacity quick-charging battery includes positive pole, and negative pole and sets up insulating barrier between positive pole and negative pole, and electrolyte, fill electrolyte between positive pole and insulating barrier and negative pole and the insulating barrier, the positive pole includes anodal current collector, anodal coating, anodal current collector is aluminium AL, anodal coating is LiCoO2, its characterized in that:
the negative electrode is an infiltration grid type electrode and comprises a negative electrode current collecting bridge frame, a grid plate and a copper grid electrode;
the negative current collecting bridge frame is a grid body formed by a plurality of grids which are arranged vertically and horizontally, a grid plate is arranged on each grid, a plurality of copper grid electrodes are arranged on the two end faces of the grid plate in a fibrous manner, and each grid is formed into a battery energy storage square cavity;
the copper grid electrodes are coated with Si coatings or C coatings, and the middle distance between every two adjacent copper grid electrodes is an expansion gap;
the grid plate and the grids are also respectively provided with a plurality of through holes, the through holes are lithium ion through holes, lithium ions in the through holes can freely pass through the through holes to block coating particles, and the lithium ions of the negative electrode can be attached in a three-dimensional depth manner and smoothly flow.
2. The high-capacity quick-charging battery with the wetting grid electrode as claimed in claim 1, wherein the grid plate is vertically arranged in the grid of the negative current collecting bridge, two end faces of the grid plate respectively face the openings at two ends of the grid, and the copper grid electrode is perpendicular to the two end faces of the grid plate.
3. The high capacity, fast-charging battery with wetting grid electrode of claim 1, wherein the positive current collector includes but is not limited to aluminum AL.
4. The high capacity, fast-charging battery with wetting grid electrode of claim 1, wherein said positive electrode coating includes but is not limited to LiCoO 2.
5. The high-capacity fast-charging battery with the wetting grid electrode as claimed in claim 1, wherein the negative electrode is copper grid electrode.
6. The high capacity, fast charging battery with wetting grid electrode of claim 1, wherein the coating of the negative electrode includes but is not limited to Si coating and C coating.
7. The high-capacity quick-charging battery with the wetting grid type electrode as claimed in claim 1, wherein the grid of the negative current collecting bridge is formed with slots, and a plurality of grid plates are respectively inserted into the slots of the grids of the negative current collecting bridge.
CN202121023474.XU 2021-05-13 2021-05-13 High-capacity quick-charging battery with wetting grid type electrode Active CN214542289U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202121023474.XU CN214542289U (en) 2021-05-13 2021-05-13 High-capacity quick-charging battery with wetting grid type electrode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202121023474.XU CN214542289U (en) 2021-05-13 2021-05-13 High-capacity quick-charging battery with wetting grid type electrode

Publications (1)

Publication Number Publication Date
CN214542289U true CN214542289U (en) 2021-10-29

Family

ID=78284212

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202121023474.XU Active CN214542289U (en) 2021-05-13 2021-05-13 High-capacity quick-charging battery with wetting grid type electrode

Country Status (1)

Country Link
CN (1) CN214542289U (en)

Similar Documents

Publication Publication Date Title
KR101831423B1 (en) Battery, battery plate assembly, and method of assembly
CN107681115B (en) Negative plate of lithium slurry battery
US4037031A (en) Bipolar lead acid battery having titanium and zirconium electrode supports
US20160164079A1 (en) Advanced si-c composite anode electrode for high energy density and longer cycle life
CN212907803U (en) Lithium ion battery with high-rate charge and discharge
JP2022522542A (en) Battery module and battery pack
CN113078289A (en) High-capacity quick-charging battery with wetting grid type electrode
CN106207193A (en) A kind of bipolar plate-shaped unit high-energy lead-acid battery and the high-tension battery group of composition thereof and method for packing
CN202019028U (en) Cell core of lithium cell and lithium cell
CN214542289U (en) High-capacity quick-charging battery with wetting grid type electrode
CN206976447U (en) A kind of new-energy automobile lithium battery group
CN215896482U (en) Lithium slurry battery
JP7149046B2 (en) liquid lead acid battery
EP3706200A1 (en) Lead storage battery separator and lead storage battery
CN215184062U (en) Pole piece and lithium secondary battery
JP5591141B2 (en) Control valve type lead storage battery manufacturing method
JPWO2014156053A1 (en) Anode for non-aqueous electrolyte secondary battery and non-aqueous electrolyte secondary battery
CN113540400A (en) Large-size cylindrical lithium ion secondary battery and positive and negative pole pieces thereof
CN111799500A (en) Lithium ion battery with high-rate charge and discharge
CN220873617U (en) Pole piece with middle-arranged pole lug, battery core and lithium ion battery
WO2022030056A1 (en) Liquid lead storage battery
CN214477547U (en) Current collector, pole piece with current collector, battery, electronic product and vehicle
CN220873622U (en) Negative pole piece, electrochemical device and electric equipment
CN217426835U (en) Preparation system of battery cell, battery cell and battery pole group
CN221176337U (en) Electrode assembly, battery and electric equipment

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant