CN109659624A - A kind of lithium battery and its manufacture craft of fire resisting - Google Patents
A kind of lithium battery and its manufacture craft of fire resisting Download PDFInfo
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- CN109659624A CN109659624A CN201811570022.6A CN201811570022A CN109659624A CN 109659624 A CN109659624 A CN 109659624A CN 201811570022 A CN201811570022 A CN 201811570022A CN 109659624 A CN109659624 A CN 109659624A
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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
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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
- H01M10/04—Construction or manufacture in general
- H01M10/0404—Machines for assembling 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
- H01M10/052—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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/60—Selection of substances as active materials, active masses, active liquids of organic compounds
- H01M4/602—Polymers
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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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/664—Ceramic materials
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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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/665—Composites
- H01M4/667—Composites in the form of layers, e.g. coatings
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/383—Flame arresting or ignition-preventing means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- 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
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- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Composite Materials (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a kind of lithium battery of fire resisting and its manufacture crafts, including shell, partition, pedestal, positive electrode, negative electrode material, diaphragm, pressure pad, mounting blocks, grid flow collection sheet, electrode connecting line, pole lid, Positive Poles, negative pole, rivet, aluminium foil, polymer PTC layer, electrolyte, copper foil, heat-stable ceramic layer, rubber seal, electrolyte inlet, weld tabs, support column, explosion rupture disk, top cover and venthole, side opposite ends are welded with partition among the inner wall bottom of shell, the side of partition is equipped with pedestal, aluminium foil is provided at the top of pedestal, positive electrode is coated on aluminium foil, the side opposite ends of positive electrode are mounted on polymer PTC layer, the side of aluminium foil is provided with copper foil, negative electrode material is coated on copper foil, the side opposite ends of negative electrode material are mounted on heat-resisting pottery Enamel coating, the present invention, structure is simple, and fire resisting explosion-proof performance is good, and use is safe.
Description
Technical field
The present invention relates to technical field of lithium batteries, the lithium battery and its manufacture craft of specially a kind of fire resisting.
Background technique
It by lithium metal or lithium alloy is negative electrode material, using the battery of non-aqueous electrolytic solution that lithium battery, which is a kind of, 1912
Year lithium metal battery proposes and studied by Gilbert N.Lewis earliest, and when the 1970s, M.S.Whittingham is mentioned
Out and the lithium ion battery that begins one's study, since the chemical characteristic of lithium metal is very active, so that the processing of lithium metal, saving, making
With very high to environmental requirement, with the development of science and technology, present lithium battery has become mainstream, and lithium battery is when long
Between a large amount of heat can be generated in use process, lithium battery structure in the prior art is complicated, and fire resisting poor in anti-explosion property is easily led to
Lithium battery explosion, use is dangerous, therefore designs a kind of lithium battery of fire resisting and its manufacture craft is necessary.
Summary of the invention
The purpose of the present invention is to provide a kind of lithium battery of fire resisting and its manufacture crafts, to solve in above-mentioned background technique
The problem of proposition.
In order to solve the above technical problem, the present invention provides following technical solutions: a kind of lithium battery of fire resisting, including shell
Body, partition, pedestal, positive electrode, negative electrode material, diaphragm, pressure pad, mounting blocks, grid flow collection sheet, electrode connecting line, pole
Column lid, Positive Poles, negative pole, rivet, aluminium foil, polymer PTC layer, electrolyte, copper foil, heat-stable ceramic layer, rubber seal
Circle, electrolyte inlet, weld tabs, support column, explosion rupture disk, top cover and venthole, the inner wall bottom centre side pair of the shell
Both ends are answered to be welded with partition, the side of the partition is equipped with pedestal, and aluminium foil, the aluminium foil are provided at the top of the pedestal
On be coated with positive electrode, the side opposite ends of the positive electrode are mounted on polymer PTC layer, the side of the aluminium foil
It is provided with copper foil, negative electrode material is coated on the copper foil, the side opposite ends of the negative electrode material are mounted on heat-resisting pottery
Enamel coating is provided with diaphragm, is filled with electrolyte, the top of the shell in the shell between the positive electrode and negative electrode material
Portion is connect with mounting blocks bottom, and the bottom of the mounting blocks, which is uniformly glued, grid flow collection sheet, one end of the grid flow collection sheet
Electrode connecting line is installed, the inner wall bottom of the mounting blocks is provided with weld tabs, and the top side opposite ends of the weld tabs are equal
It is connect by support column with explosion rupture disk, top cover is provided with above the explosion rupture disk, is uniformly provided with venthole on the top cover,
Pole lid is installed at the top of the mounting blocks, one end of the pole lid is welded with Positive Poles, the pole lid it is another
End is welded with negative pole.
A kind of manufacture craft of the lithium battery of fire resisting, including step 1, anode pole piece manufacture installation；Step 2, cathode pole
Piece manufacture installation；Step 3, Battery Pole Core installation；Step 4, battery assembly；
Wherein in above-mentioned steps one, by cobalt acid lithium, LiFePO4, LiMn2O4, lithium nickelate, ternary material is prepared into positive material
Material, positive electrode, PVDF and conductive black are ground according to 90:5:5, and grinding uniformly, is added NMP and slurry is made, with scraping
Knife is scratched on aluminium foil, is put into baking oven and is dried, and NMP is allowed to vapor away, and is placed into vacuum drying oven and is dried, what is completed
Anode pole piece both ends are installed by polymer PTC layer；
Wherein in above-mentioned steps two, graphite is prepared into negative electrode material, by negative electrode material, conductive black and PVDF according to
93:2:5 is ground, and grinding uniformly, is added NMP and slurry is made, scratched on copper foil with scraper, be put into baking oven and dry
It is dry, it allows NMP to vapor away, places into vacuum drying oven and dry, heat-stable ceramic layer is installed at the cathode pole piece both ends completed；
Wherein in above-mentioned steps three, diaphragm is installed in the anode pole piece bottom prepared, preparation is installed in the bottom of diaphragm
Good cathode pole piece, then diaphragm is installed in its bottom again, rolled that Battery Pole Core is made, on the inner wall of the housing by Battery Pole Core installation
On the pedestal of bottom, separated with partition；
Wherein in above-mentioned steps four, pressure pad is installed at the top of the inner wall of shell, mounting blocks are installed at the top of shell,
Weld tabs is installed in mounting blocks inner wall bottom, explosion rupture disk is installed above weld tabs, top cover is installed above explosion rupture disk, in mounting blocks
Pole lid is installed at top, and Positive Poles and negative pole are fixed on pole tops by rivet, is glued in mounting blocks bottom
Grid flow collection sheet one end is connect by electrode connecting line with Positive Poles and negative pole, passes through electrolyte by grid flow collection sheet
Inlet injects electrolyte in shell, then seals, and completes the assembly of battery.
According to the above technical scheme, the bottom of the Positive Poles and negative pole is provided with rubber seal, and rubber
Sealing ring and pole lid are glued.
According to the above technical scheme, the Positive Poles and negative pole pass through rivet and connect with pole lid.
According to the above technical scheme, the bottom of the shell is uniformly provided with electrolyte inlet.
According to the above technical scheme, side opposite ends offer anti-explosion groove in the explosion rupture disk, in the anti-explosion groove
It is provided with explosion-proof ring.
According to the above technical scheme, explosion rupture disk bottom both ends offer fixing groove, the top one of the support column
End is located in fixing groove.
According to the above technical scheme, pressure pad is uniformly installed at the top of the inner wall of the shell.
Compared with prior art, the beneficial effects obtained by the present invention are as follows being: by cobalt acid lithium, LiFePO4, LiMn2O4, nickel acid
Lithium, ternary material are prepared into positive electrode, and positive electrode, PVDF and conductive black are ground according to 90:5:5, and grinding is equal
It is even, NMP is added, slurry is made, scratched on aluminium foil with scraper, be put into baking oven and dry, NMP is allowed to vapor away, places into true
It is dried in empty baking oven, polymer PTC layer is installed at the anode pole piece both ends completed；Graphite is prepared into negative electrode material, will be born
Pole material, conductive black and PVDF are ground according to 93:2:5, and grinding uniformly, is added NMP and slurry is made, with scraper in copper foil
On scratched, be put into baking oven and dry, NMP is allowed to vapor away, place into vacuum drying oven and dry, in the cathode pole piece completed
Both ends are installed by heat-stable ceramic layer；Diaphragm is installed in the anode pole piece bottom prepared, installation prepares negative in the bottom of diaphragm
Pole pole piece, then diaphragm is installed in its bottom again, rolled that Battery Pole Core is made, by Battery Pole Core installation bottom on the inner wall of the housing
On pedestal, separated with partition；Pressure pad is installed at the top of the inner wall of shell, mounting blocks are installed at the top of shell, are being installed
Weld tabs is installed in block inner wall bottom, and explosion rupture disk is installed above weld tabs, top cover is installed above explosion rupture disk, pacifies at the top of mounting blocks
Pole lid is filled, Positive Poles and negative pole are fixed on by pole tops by rivet, is glued grid collection in mounting blocks bottom
Grid flow collection sheet one end is connect by electrode connecting line with Positive Poles and negative pole, passes through electrolyte inlet by flow
Electrolyte is injected in shell, is then sealed, is completed the assembly of battery；The present invention, structure is simple, by anode pole piece both ends
Polymer PTC layer is installed, when temperature increases, polymer PTC layer is heated, and resistance increases, resistance to by installing at cathode pole piece both ends
Thermal Ceramics layer has high heat resistance type, and pressure pad can bear higher temperature and pressure, and the setting of explosion rupture disk is effectively prevent
For lithium battery by thermal explosion, use is safe.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.In the accompanying drawings:
Fig. 1 is whole front view of the invention；
Fig. 2 is entirety sectional view of the invention；
Fig. 3 is battery pole piece structural schematic diagram of the invention；
Fig. 4 is mounting blocks structural schematic diagram of the invention；
Fig. 5 is fabrication processing figure of the invention；
In figure: 1, shell；2, partition；3, pedestal；4, positive electrode；5, negative electrode material；6, diaphragm；7, pressure pad；8,
Mounting blocks；9, grid flow collection sheet；10, electrode connecting line；11, pole lid；12, Positive Poles；13, negative pole；14, rivet；
15, aluminium foil；16, polymer PTC layer；17, electrolyte；18, copper foil；19, heat-stable ceramic layer；20, rubber seal；21, it is electrolysed
Liquid inlet；22, weld tabs；23, support column；24, explosion rupture disk；25, top cover；26, venthole.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Please refer to Fig. 1-4, the present invention provides a kind of technical solution: a kind of lithium battery of fire resisting, including shell 1, partition 2,
Pedestal 3, positive electrode 4, negative electrode material 5, diaphragm 6, pressure pad 7, mounting blocks 8, grid flow collection sheet 9, electrode connecting line 10, pole
It is column lid 11, Positive Poles 12, negative pole 13, rivet 14, aluminium foil 15, polymer PTC layer 16, electrolyte 17, copper foil 18, heat-resisting
Ceramic layer 19, rubber seal 20, electrolyte inlet 21, weld tabs 22, support column 23, explosion rupture disk 24, top cover 25 and venthole
26, the inner wall bottom centre side opposite ends of shell 1 are welded with partition 2, and the side of partition 2 is equipped with pedestal 3, pedestal 3
Top be provided with aluminium foil 15, positive electrode 4 is coated on aluminium foil 15, the side opposite ends of positive electrode 4 are mounted on poly-
Object PTC layer 16 is closed, the side of aluminium foil 15 is provided with copper foil 18, negative electrode material 5, the side of negative electrode material 5 are coated on copper foil 18
Opposite ends are mounted on heat-stable ceramic layer 19, and diaphragm 6, filling in shell 1 are provided between positive electrode 4 and negative electrode material 5
There is electrolyte 17, the top of shell 1 is connect with 8 bottom of mounting blocks, and the bottom of mounting blocks 8, which is uniformly glued, grid flow collection sheet 9, plate
One end of grid flow collection sheet 9 is equipped with electrode connecting line 10, and the inner wall bottom of mounting blocks 8 is provided with weld tabs 22, the top of weld tabs 22
Side opposite ends pass through support column 23 and connect with explosion rupture disk 24, and the top of explosion rupture disk 24 is provided with top cover 25, on top cover 25
It is uniformly provided with venthole 26, the top of mounting blocks 8 is equipped with pole lid 11, and one end of pole lid 11 is welded with Positive Poles
12, the other end of pole lid 11 is welded with negative pole 13.
Referring to Fig. 5, the present invention provides a kind of technical solution: a kind of manufacture craft of the lithium battery of fire resisting, including step
One, anode pole piece manufacture installation；Step 2, cathode pole piece manufacture installation；Step 3, Battery Pole Core installation；Step 4, battery dress
Match；
Wherein in above-mentioned steps one, by cobalt acid lithium, LiFePO4, LiMn2O4, lithium nickelate, ternary material is prepared into positive material
Material 4, positive electrode 4, PVDF and conductive black are ground according to 90:5:5, and grinding uniformly, is added NMP and slurry is made, use
Scraper is scratched on aluminium foil 15, is put into baking oven and is dried, and NMP is allowed to vapor away, and is placed into vacuum drying oven and is dried, and is completed
Good anode pole piece both ends are installed by polymer PTC layer 16；
Wherein in above-mentioned steps two, graphite is prepared into negative electrode material 5, by negative electrode material 5, conductive black and PVDF according to
93:2:5 is ground, and grinding uniformly, is added NMP and slurry is made, scratched on copper foil 18 with scraper, be put into baking oven and dry
It is dry, it allows NMP to vapor away, places into vacuum drying oven and dry, heat-stable ceramic layer 19 is installed at the cathode pole piece both ends completed；
Wherein in above-mentioned steps three, diaphragm 6 is installed in the anode pole piece bottom prepared, system is installed in the bottom of diaphragm 6
The cathode pole piece got ready, then diaphragm 6 is installed in its bottom again, rolled that Battery Pole Core is made, and Battery Pole Core is mounted on shell 1
On the pedestal 3 of inner wall bottom, separated with partition 2；
Wherein in above-mentioned steps four, pressure pad 7 is installed at the top of the inner wall of shell 1, installation is installed at the top of shell 1
Block 8 installs weld tabs 22 in 8 inner wall bottom of mounting blocks, explosion rupture disk 24 is installed above weld tabs 22, top is installed above explosion rupture disk 24
Lid 25 installs pole lid 11 at the top of mounting blocks 8, Positive Poles 12 and negative pole 13 is fixed on pole by rivet 14
11 top of lid is glued grid flow collection sheet 9 in 8 bottom of mounting blocks, 9 one end of grid flow collection sheet is passed through electrode connecting line 10 and anode
Pole 12 and negative pole 13 connect, and inject electrolyte 17 in shell 1 by electrolyte inlet 21, then seal, and complete
The assembly of battery.
According to the above technical scheme, the bottom of Positive Poles 12 and negative pole 13 is provided with rubber seal 20, and rubber
Glue sealing ring 20 and pole lid 11 are glued.
According to the above technical scheme, Positive Poles 12 and negative pole 13 are connect by rivet 14 with pole lid 11.
According to the above technical scheme, the bottom of shell 1 is uniformly provided with electrolyte inlet 21.
According to the above technical scheme, side opposite ends offer anti-explosion groove in explosion rupture disk 24, are provided in anti-explosion groove
Explosion-proof ring.
According to the above technical scheme, 24 bottom both ends of explosion rupture disk offer fixing groove, top one end position of support column 23
In in fixing groove.
According to the above technical scheme, pressure pad 7 is uniformly installed at the top of the inner wall of shell 1.
Based on above-mentioned, it is an advantage of the current invention that the present invention is in use, by cobalt acid lithium, LiFePO4, LiMn2O4, nickel acid
Lithium, ternary material are prepared into positive electrode 4, and positive electrode 4, PVDF and conductive black are ground according to 90:5:5, grinding
Uniformly, NMP is added and slurry is made, scratched on aluminium foil 15 with scraper, be put into baking oven and dry, NMP is allowed to vapor away, then put
Enter in vacuum drying oven and dry, polymer PTC layer 16 is installed at the anode pole piece both ends completed；Graphite is prepared into negative electrode material
5, negative electrode material 5, conductive black and PVDF are ground according to 93:2:5, grinding uniformly, is added NMP and slurry is made, with scraping
Knife is scratched on copper foil 18, is put into baking oven and is dried, and NMP is allowed to vapor away, and is placed into vacuum drying oven and is dried, and is completed
Cathode pole piece both ends install heat-stable ceramic layer 19；Diaphragm 6 is installed in the anode pole piece bottom prepared, in the bottom of diaphragm 6
The cathode pole piece prepared is installed, then diaphragm 6 is installed in its bottom again, and it is rolled that Battery Pole Core is made, Battery Pole Core is installed
On the pedestal 3 of 1 inner wall bottom of shell, separated with partition 2；Pressure pad 7 is installed at the top of the inner wall of shell 1, in shell 1
Mounting blocks 8 are installed at top, are installed weld tabs 22 in 8 inner wall bottom of mounting blocks, explosion rupture disk 24 are installed above weld tabs 22, in explosion rupture disk
Top covers 25 are installed in 24 tops, pole lid 11 are installed at the top of mounting blocks 8, by rivet 14 by Positive Poles 12 and negative pole
13 are fixed on 11 top of pole lid, are glued grid flow collection sheet 9 in 8 bottom of mounting blocks, and 9 one end of grid flow collection sheet is connected by electrode
Wiring 10 is connect with Positive Poles 12 and negative pole 13, electrolyte 17 is injected in shell 1 by electrolyte inlet 21, so
After seal, complete the assembly of battery；The present invention, structure is simple, by installing polymer PTC layer 16, temperature at anode pole piece both ends
When degree increases, polymer PTC layer 16 is heated, and resistance increases, and by installing heat-stable ceramic layer 19 at cathode pole piece both ends, has height
Heat resistant type, pressure pad 7 can bear higher temperature and pressure, and the setting of explosion rupture disk 24 effectively prevent lithium battery by thermal explosion
Fried, use is safe.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, manufacture craft, article or the equipment that include a series of elements not only include those
Element, but also including other elements that are not explicitly listed, or further include for this process, manufacture craft, article or
The intrinsic element of person's equipment.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (8)
1. a kind of lithium battery of fire resisting, including shell (1), partition (2), pedestal (3), positive electrode (4), negative electrode material (5), every
Film (6), pressure pad (7), mounting blocks (8), grid flow collection sheet (9), electrode connecting line (10), pole lid (11), Positive Poles
(12), negative pole (13), rivet (14), aluminium foil (15), polymer PTC layer (16), electrolyte (17), copper foil (18), heat-resisting
Ceramic layer (19), rubber seal (20), electrolyte inlet (21), weld tabs (22), support column (23), explosion rupture disk (24), top
Cover (25) and venthole (26), it is characterised in that: the inner wall bottom centre side opposite ends of the shell (1) be welded with every
The side of plate (2), the partition (2) is equipped with pedestal (3), is provided with aluminium foil (15), the aluminium foil at the top of the pedestal (3)
(15) it being coated on positive electrode (4), the side opposite ends of the positive electrode (4) are mounted on polymer PTC layer (16),
The side of the aluminium foil (15) is provided with copper foil (18), is coated with negative electrode material (5), the negative electrode material on the copper foil (18)
(5) side opposite ends are mounted on heat-stable ceramic layer (19), are arranged between the positive electrode (4) and negative electrode material (5)
Having diaphragm (6), is filled with electrolyte (17) in the shell (1), the top of the shell (1) is connect with mounting blocks (8) bottom,
The bottom of the mounting blocks (8), which is uniformly glued, to be had grid flow collection sheet (9), and one end of the grid flow collection sheet (9) is equipped with electrode
The inner wall bottom of connecting line (10), the mounting blocks (8) is provided with weld tabs (22), the top side corresponding two of the weld tabs (22)
End is connect by support column (23) with explosion rupture disk (24), is provided with top cover (25), the top above the explosion rupture disk (24)
It is uniformly provided with venthole (26), is equipped with pole lid (11) at the top of the mounting blocks (8), the pole lid on lid (25)
(11) one end is welded with Positive Poles (12), and the other end of the pole lid (11) is welded with negative pole (13).
2. a kind of manufacture craft of the lithium battery of fire resisting, including step 1, anode pole piece manufacture installation；Step 2, cathode pole piece
Manufacture installation；Step 3, Battery Pole Core installation；Step 4, battery assembly；It is characterized in that；
Wherein in above-mentioned steps one, by cobalt acid lithium, LiFePO4, LiMn2O4, lithium nickelate, ternary material is prepared into positive electrode
(4), positive electrode (4), PVDF and conductive black to be ground according to 90:5:5, grinding uniformly, is added NMP and slurry is made,
It is scratched on aluminium foil (15) with scraper, is put into baking oven and dries, NMP is allowed to vapor away, place into vacuum drying oven and dry,
Anode pole piece both ends installation polymer PTC layer (16) completed；
Wherein in above-mentioned steps two, graphite is prepared into negative electrode material (5), by negative electrode material (5), conductive black and PVDF according to
93:2:5 is ground, and grinding uniformly, is added NMP and slurry is made, scratched, be put into baking oven on copper foil (18) with scraper
Drying, allows NMP to vapor away, places into vacuum drying oven and dry, and installs heat-stable ceramic layer at the cathode pole piece both ends completed
(19)；
Wherein in above-mentioned steps three, diaphragm (6) are installed in the anode pole piece bottom prepared, system is installed in the bottom of diaphragm (6)
The cathode pole piece got ready, then its bottom installation diaphragm (6) again, rolled that Battery Pole Core is made, and Battery Pole Core is mounted on shell
On the pedestal (3) of body (1) inner wall bottom, separated with partition (2)；
Wherein in above-mentioned steps four, pressure pad (7) are installed at the top of the inner wall of shell (1), peace is installed at the top of shell (1)
It fills block (8), weld tabs (22) is installed in mounting blocks (8) inner wall bottom, explosion rupture disk (24) are installed above weld tabs (22), in explosion rupture disk
(24) top cover (25) are installed in top, pole lid (11) are installed at the top of mounting blocks (8), by rivet (14) by Positive Poles
(12) it is fixed at the top of pole lid (11) with negative pole (13), is glued grid flow collection sheet (9) in mounting blocks (8) bottom, by plate
Grid flow collection sheet (9) one end is connect by electrode connecting line (10) with Positive Poles (12) and negative pole (13), and electrolyte is passed through
Inlet (21) injects electrolyte (17) in shell (1), then seals, completes the assembly of battery.
3. a kind of lithium battery of fire resisting according to claim 1, it is characterised in that: the Positive Poles (12) and cathode pole
The bottom of column (13) is provided with rubber seal (20), and rubber seal (20) and pole lid (11) are glued.
4. a kind of lithium battery of fire resisting according to claim 1, it is characterised in that: the Positive Poles (12) and cathode pole
Column (13) is connect by rivet (14) with pole lid (11).
5. a kind of lithium battery of fire resisting according to claim 1, it is characterised in that: uniformly open the bottom of the shell (1)
Equipped with electrolyte inlet (21).
6. a kind of lithium battery of fire resisting according to claim 1, it is characterised in that: side is corresponding on the explosion rupture disk (24)
Both ends offer anti-explosion groove, are provided with explosion-proof ring in the anti-explosion groove.
7. a kind of lithium battery of fire resisting according to claim 1, it is characterised in that: explosion rupture disk (24) the bottom both ends are equal
Fixing groove is offered, top one end of the support column (23) is located in fixing groove.
8. a kind of lithium battery of fire resisting according to claim 1, it is characterised in that: at the top of the inner wall of the shell (1)
It is even that pressure pad (7) are installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811570022.6A CN109659624A (en) | 2018-12-21 | 2018-12-21 | A kind of lithium battery and its manufacture craft of fire resisting |
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| CN101276940A (en) * | 2007-03-28 | 2008-10-01 | 松下电器产业株式会社 | Nonaqueous electrolyte secondary battery and method for manufacturing the same |
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Application publication date: 20190419 |