CN113437408A - Manufacturing method of anti-needling lithium battery - Google Patents
Manufacturing method of anti-needling lithium battery Download PDFInfo
- Publication number
- CN113437408A CN113437408A CN202110497233.7A CN202110497233A CN113437408A CN 113437408 A CN113437408 A CN 113437408A CN 202110497233 A CN202110497233 A CN 202110497233A CN 113437408 A CN113437408 A CN 113437408A
- Authority
- CN
- China
- Prior art keywords
- battery
- separation
- blocking piece
- glue
- battery case
- 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.)
- Granted
Links
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 46
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 238000000926 separation method Methods 0.000 claims abstract description 116
- 239000003292 glue Substances 0.000 claims abstract description 73
- 230000000903 blocking effect Effects 0.000 claims abstract description 47
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 238000005498 polishing Methods 0.000 claims abstract description 4
- 239000010410 layer Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 12
- 239000012790 adhesive layer Substances 0.000 claims description 11
- 230000004888 barrier function Effects 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 5
- 238000004080 punching Methods 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 230000002265 prevention Effects 0.000 claims 3
- 238000010438 heat treatment Methods 0.000 claims 1
- 238000003825 pressing Methods 0.000 claims 1
- 230000035515 penetration Effects 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 11
- 230000002829 reductive effect Effects 0.000 description 7
- 238000005192 partition Methods 0.000 description 4
- 239000004568 cement Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000007773 negative electrode material Substances 0.000 description 2
- 239000007774 positive electrode material Substances 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 206010029216 Nervousness Diseases 0.000 description 1
- 244000062793 Sorghum vulgare Species 0.000 description 1
- 238000001467 acupuncture Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001595 contractor effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 235000019713 millet Nutrition 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- 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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/107—Primary casings; Jackets or wrappings characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
-
- 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
-
- 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
-
- 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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
- H01M50/126—Primary casings; Jackets or wrappings characterised by the material having a layered structure comprising three or more layers
-
- 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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
- H01M50/184—Sealing members characterised by their shape or structure
-
- 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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
- H01M50/186—Sealing members characterised by the disposition of the sealing members
-
- 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
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Secondary Cells (AREA)
Abstract
The invention relates to the technical field of lithium battery preparation, and discloses a manufacturing method of a needling-prevention lithium battery, which specifically comprises the following steps: s1: polishing the wavy inner separation blocking piece, the wavy outer separation blocking piece and the wavy outer separation blocking piece, sequentially adhering insulating pieces to the inner separation blocking piece, the wavy outer separation blocking piece and the wavy outer separation blocking piece, and cooling to room temperature for later use; s2: and stamping the inner separation blocking piece to ensure that the piece valley of the inner separation blocking piece is abutted against the outer side wall of the battery inner core, pouring glue into a gap between the inner separation blocking piece and the battery inner core, and forming an inner bonding glue layer after the glue is solidified. The inner separation blade and the outer separation blade are respectively arranged in the anti-needling lithium battery prepared by the invention, when the outer needling is carried out on the interior of the battery, the battery can be inserted into the interior of the battery inner core only by sequentially passing through the outer bonding glue, the outer separation blade, the insulating glue, the inner separation blade and the inner bonding glue, so that the penetration difficulty is increased, and the anti-needling performance of the battery is enhanced.
Description
Technical Field
The invention relates to the technical field of lithium battery preparation, in particular to a manufacturing method of a needling-prevention lithium battery.
Background
Batteries are common devices in life, at present, lithium batteries are very popular, and safety problems can be considered in the design of the batteries. In particular, lithium batteries are extremely explosive if they fail because of the chemical activity of lithium ions. Therefore, for a common lithium battery, an overcurrent protection measure is designed inside the lithium battery to prevent the internal temperature of the lithium battery from being too high.
However, the overcurrent protection of lithium batteries, which is most directly achieved by an overcurrent protection board, is directed to the short circuit of an external circuit; for the problem of the failure of the battery inner core, the protection plate cannot be protected; at this time, the thermal effect generated by the diaphragm of the battery inner core is generally relied on to shrink the through hole on the surface of the diaphragm, so that ions can not pass through the diaphragm to prevent the chemical reaction in the battery; however, even though the separator is expensive due to process and material limitations, the contraction effect of the through-holes is very limited, and thus, the safety protection performance of the separator is weak in the case of a severe short circuit inside the battery.
Typically, when the battery is touched by an external needle, for example, some people with poor safety consciousness, especially children, penetrate the sharp needle into the battery, and the metal sharp needle penetrates through the positive and negative electrode materials in the battery, so that the internal of the battery is directly short-circuited.
Disclosure of Invention
The invention aims to provide a manufacturing method of a needling-prevention lithium battery, wherein an inner separation blade and an outer separation blade are respectively arranged in the prepared needling-prevention lithium battery, when the outer needling is carried out in the battery, the outer needling is required to be penetrated into an inner core of the battery through outer bonding glue, outer separation blade, insulating glue, inner separation blade and inner bonding glue in sequence to realize battery short circuit, the needling-prevention performance of the battery is enhanced, and simultaneously, the inner separation blade and the outer separation blade are wavy, and the pressure intensity of the inner separation blade and the outer separation blade is reduced due to the non-vertical state of the pressure and the contact surface when the needling is carried out, aiming at solving the problems that in the prior art, if a sharp needle is penetrated into the battery, a metal sharp needle penetrates through positive and negative electrode materials in the battery to cause direct short circuit in the battery, under the condition, the sudden temperature rise in the battery due to the sudden current expansion, and the quick reaction of a common diaphragm is difficult to resist, thereby causing explosion of the battery and causing a problem of accidents.
The invention is realized in this way, the manufacturing method of the lithium battery of preventing acupuncture, include the following step specifically:
s1: polishing the wavy inner separation blocking piece, the wavy outer separation blocking piece and the wavy outer separation blocking piece, sequentially adhering insulating pieces to the inner separation blocking piece, the wavy outer separation blocking piece and the wavy outer separation blocking piece, and cooling to room temperature for later use;
s2: stamping the inner separation blocking piece to enable the piece valley of the inner separation blocking piece to be abutted against the outer side wall of the battery inner core, pouring glue into a gap between the inner separation blocking piece and the battery inner core, and forming an inner bonding glue layer after the glue is solidified;
s3: stamping the outer separation blocking sheet to enable the sheet peak of the outer separation blocking sheet to be abutted against the inner side wall of the battery shell, pouring glue into a gap between the outer separation blocking sheet and the battery shell, and forming an outer bonding glue layer after the glue is solidified;
s4: putting the battery shell processed in the step S3 into a mold, putting the battery inner core processed in the step S2 into the battery shell, starting an insulating glue pouring operation, and fully pouring the space between the battery inner core and the battery shell to form an insulating glue layer;
s5: and sealing two ends of the lithium battery, and fixing the positive and negative electrode plates to complete the manufacture of the anti-needling lithium battery.
Further, in S1, a plurality of protrusions are uniformly disposed on both sides of the inner partition plate and the outer partition plate except for the plate peaks and the plate valleys, and the protrusions are circular or polygonal.
Further, in S2, the thickness of the inner partition plate is 0.3 to 0.8mm, and one side of the inner adhesive layer abuts against the peak of the inner partition plate.
Further, in S3, before the external separation blade is snapped into the battery case, the inner wall of the battery case is polished to remove the oxide film on the inner wall.
Furthermore, the battery shell is made of an aluminum alloy material, and after the oxide film on the inner wall of the battery shell is eliminated, the outer separation blocking pieces are sequentially fixed on the inner wall of the battery shell.
Further, when the outer separation blocking piece is fixed, the insulating piece is heated, so that the insulating piece is in a molten state, and the sheet peak of the outer separation blocking piece is aligned to the inner wall of the battery shell and pressed to be adhered and fixed.
Further, after the outer separation baffle is fixed, the gap between the battery shell and the outer separation baffle is directly filled to form an outer bonding adhesive layer, and the outer bonding adhesive layer is tightly attached to the outer wall of the battery shell.
Further, in S4, the mold includes a battery case fixing cavity and a battery inner core fixing cavity, the battery inner core and the battery case are sequentially placed inside the battery case fixing cavity and the battery inner core fixing cavity, and the through groove between the battery inner core and the battery case is filled with the insulating glue.
Further, in S5, the sealing of the two ends of the lithium battery includes removing the insulation glue overflowing from the two ends of the battery case, and extending the insulation glue from the two ends of the battery inner core, so that the positive and negative plates are directly connected to the battery inner core when mounted.
Furthermore, the middle parts of the inner sides of the positive and negative polar plates are connected with the battery inner core, and the edges of the positive and negative polar plates are inwards buckled on the outer wall of the battery shell to finish the fixation of the positive and negative polar plates.
Compared with the prior art, the manufacturing method of the anti-needling lithium battery provided by the invention has the following beneficial effects:
1. the prepared anti-needling lithium battery is internally provided with an inner separation blade and an outer separation blade respectively, when the interior of the battery is needled, the battery can be penetrated into the interior of the battery core to realize the short circuit of the battery by sequentially passing through the outer bonding glue, the outer separation blade, the insulating glue, the inner separation blade and the inner bonding glue, the anti-needling performance of the battery is enhanced, meanwhile, the inner separation blade and the outer separation blade are wavy, when the needle is pricked, the pressure is not vertical to the contact surface, so the pressure intensity of the inner separation baffle and the outer separation baffle is reduced, the risk of the inner separation baffle and the outer separation baffle being pricked is reduced, and the sheet peaks of the inner separation blocking sheet and the outer separation blocking sheet and the insulation sheets arranged on the sheet valleys can firstly increase the bonding force with the interior of the battery, meanwhile, the effect of increasing resistance is achieved during needling, and the needle head is prevented from further advancing, so that a good effect of inhibiting the lithium battery from being needled is achieved;
2. the inner separation blade and the outer separation blade are respectively provided with a plurality of bulges, so that when the filling and sealing are carried out, good adhesion effects are achieved on the outer bonding glue, the insulating glue and the inner bonding glue, the quick filling is achieved, meanwhile, the bulges can increase the resistance of the bonding glue layer or the insulating glue layer, the bonding glue layer or the insulating glue layer is prevented from shaking inside the battery, and the stability of the bonding glue layer or the insulating glue layer is improved.
Drawings
FIG. 1 is a schematic diagram of a battery structure prepared by the method for manufacturing a lithium battery with anti-needle punching according to the present invention;
FIG. 2 is a top view of a lithium battery fabricated by the method of fabricating a lithium battery according to the present invention;
FIG. 3 is an enlarged view of the structure of area A in FIG. 2;
fig. 4 is a schematic structural diagram of an external separation blade or an internal separation blade in a battery prepared by the manufacturing method of the anti-needling lithium battery provided by the invention.
In the figure: 1-battery shell, 2-battery inner core, 3-external separation baffle, 4-insulating adhesive layer, 5-internal separation baffle, 6-external adhesive layer, 7-internal adhesive layer, 8-peaks, 9-valleys, 10-insulating sheet and 11-bulges.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The following describes the implementation of the present invention in detail with reference to specific embodiments.
The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.
Referring to fig. 1-4, preferred embodiments of the present invention are shown.
The manufacturing method of the anti-needling lithium battery specifically comprises the following steps:
s1: polishing the wavy inner separation blocking piece 5, the wavy outer separation blocking piece 3, the wavy peaks 8 and the wavy valleys 11, sequentially adhering the insulating pieces 10 to the inner separation blocking piece 5, the wavy outer separation blocking piece 3, the wavy outer separation blocking piece 8 and the wavy outer separation blocking piece 9, and cooling to room temperature for later use;
s2: stamping the inner separation baffle 5 to enable the valley 9 of the inner separation baffle 5 to be abutted against the outer side wall of the battery inner core 2, pouring glue into the gap between the inner separation baffle 5 and the battery inner core 2, and forming an inner bonding glue layer 7 after the glue is solidified;
s3: stamping the outer separation blocking sheet 3 to enable the sheet peak 8 of the outer separation blocking sheet 3 to abut against the inner side wall of the battery shell 1, pouring glue into a gap between the outer separation blocking sheet 3 and the battery shell 1, and forming an outer bonding glue layer 6 after the glue is solidified;
s4: putting the battery shell 1 processed in the step S3 into a mould, putting the battery inner core 2 processed in the step S2 into the battery shell 1, starting an insulating glue pouring operation, and fully pouring the space between the battery inner core 2 and the battery shell 1 to form an insulating glue layer 4;
s5: and sealing two ends of the lithium battery, and fixing the positive and negative electrode plates to complete the manufacture of the anti-needling lithium battery.
Specifically, the inner separation blade 5 and the outer separation blade 3 are wavy, and when the lithium battery is subjected to needling, due to the fact that the pressure and the contact surface are not vertical, the pressure intensity of the inner separation blade 5 and the outer separation blade 3 is reduced, the risk that the inner separation blade 5 and the outer separation blade 3 are punctured is reduced, the insulating sheets 10 arranged on the sheet peaks 8 and the sheet valleys 9 of the inner separation blade 5 and the outer separation blade 3 can firstly increase the bonding force with the inside of the battery, meanwhile, the effect of increasing the resistance is achieved during needling, the needle head is prevented from further advancing, and therefore a good restraining effect is achieved on the lithium battery from being needled.
In this embodiment, in S1, the both sides of interior separation blade 5, outer separation blade 3 evenly are provided with a plurality of archs 11 except that piece peak 8, piece millet 9, protruding 11 is circular or multilateral shape, and its effect is when carrying out the filling and sealing, and outer bonding glue, insulating cement, interior bonding glue play good adhesion effect to realize quick filling, protruding 11 can increase the resistance with bonding glue film or insulating glue film 4 simultaneously, thereby prevent bonding glue film or insulating glue film 4 and rock inside the battery.
In this embodiment, in S2, the thickness of the inner barrier sheet 5 is 0.3-0.8mm, one side of the inner adhesive layer 7 abuts against the sheet peak 8 of the inner barrier sheet 5, in S3, before the outer barrier sheet 3 is inserted into the battery case 1, the inner wall of the battery case 1 is polished to remove the oxide film on the inner wall, the battery case 1 is made of an aluminum alloy material, after the oxide film on the inner wall of the battery case 1 is removed, the outer barrier sheets 3 are sequentially fixed on the inner wall of the battery case 1, when the outer barrier sheets 3 are fixed, the insulating sheets 10 are heated to be in a molten state, the sheet peaks 8 of the outer barrier sheets 3 are pressed against the inner wall of the battery case 1 to be adhered and fixed, after the outer barrier sheets 3 are fixed, the gap between the battery case 1 and the outer barrier sheets 3 is directly filled to form the outer adhesive layer 6, the outer bonding glue layer 6 is tightly attached to the outer wall of the battery shell 1, the inner separation blade 5 and the outer separation blade 3 are respectively arranged in the anti-needling lithium battery prepared by the method, when the outer needling lithium battery is internally punched, the outer bonding glue, the outer separation blade 3, the insulating glue, the inner separation blade 5 and the inner bonding glue are required to be sequentially penetrated into the battery inner core 2, the penetration difficulty is increased, and the anti-needling performance of the battery is enhanced.
In this embodiment, in S4, the mold includes a battery case fixing cavity and a battery core fixing cavity, the battery core 2 and the battery case 1 are sequentially placed inside the battery case fixing cavity and the battery core fixing cavity, and then the through groove between the battery core and the battery case is filled with the insulating glue, in S5, the two ends of the lithium battery are sealed, including removing the insulating glue overflowing from the two ends of the battery case, and the insulating glue extends from the two ends of the battery core, so that the positive and negative plates are directly contacted and connected with the battery core when mounted, the middle parts of the inner sides of the positive and negative plates are connected with the battery core 2, and the edges of the positive and negative plates are inwardly buckled on the outer wall of the battery case 1 to complete the fixing of the positive and negative plates, thereby connecting the battery core 2 with the positive and negative plates to realize electric energy transmission.
The anti-needling lithium battery prepared by the technical scheme is internally provided with the inner separation blade 5 and the outer separation blade 3 respectively, the outer needling lithium battery can be penetrated into the inner core 2 of the battery to realize the short circuit of the battery only by sequentially passing through the outer bonding glue, the outer separation blade 3, the insulating glue, the inner separation blade 5 and the inner bonding glue when the outer needling lithium battery is internally provided, the anti-needling performance of the battery is enhanced, meanwhile, the inner separation blade 5 and the outer separation blade 3 are wavy, the pressure and the contact surface are not vertical when the battery is subjected to needling, the pressure intensity born by the inner separation blade 5 and the outer separation blade 3 is reduced, the risk that the inner separation blade 5 and the outer separation blade 3 are punctured is reduced, the bonding force with the interior of the battery can be firstly increased by the inner separation blade 5, the sheet peak 8 of the outer separation blade 3 and the insulating sheet 10 arranged on the sheet valley 9, the effect of increasing the resistance is achieved when the needling, and the needle head is prevented from further advancing, thereby having good effect of inhibiting the lithium battery from being needled; interior separation blade 5, have set up a plurality of archs 11 on separating blade 3 outward respectively, like this when carrying out the filling and sealing, external bonding glue, insulating cement, interior bonding glue play good adhesion effect to realize quick packing, protruding 11 can increase simultaneously and bond glue film or insulating glue film 4's resistance, thereby prevent that bond glue film or insulating glue film 4 from rocking inside the battery, improved bond glue film or insulating glue film 4's steadiness.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The manufacturing method of the anti-needling lithium battery is characterized by comprising the following steps:
s1: polishing the wavy inner separation blocking piece, the wavy outer separation blocking piece and the wavy outer separation blocking piece, sequentially adhering insulating pieces to the inner separation blocking piece, the wavy outer separation blocking piece and the wavy outer separation blocking piece, and cooling to room temperature for later use;
s2: stamping the inner separation blocking piece to enable the piece valley of the inner separation blocking piece to be abutted against the outer side wall of the battery inner core, pouring glue into a gap between the inner separation blocking piece and the battery inner core, and forming an inner bonding glue layer after the glue is solidified;
s3: stamping the outer separation blocking sheet to enable the sheet peak of the outer separation blocking sheet to be abutted against the inner side wall of the battery shell, pouring glue into a gap between the outer separation blocking sheet and the battery shell, and forming an outer bonding glue layer after the glue is solidified;
s4: putting the battery shell processed in the step S3 into a mold, putting the battery inner core processed in the step S2 into the battery shell, starting an insulating glue pouring operation, and fully pouring the space between the battery inner core and the battery shell to form an insulating glue layer;
s5: and sealing two ends of the lithium battery, and fixing the positive and negative electrode plates to complete the manufacture of the anti-needling lithium battery.
2. The method for manufacturing a lithium battery as claimed in claim 1, wherein in S1, a plurality of protrusions are uniformly disposed on both sides of the inner and outer separation blades except for the peaks and valleys, and the protrusions are circular or polygonal.
3. The method for manufacturing a lithium battery with needle punching prevention as claimed in claim 2, wherein in S2, the thickness of the inner separation blade is 0.3-0.8mm, and one side of the inner adhesive layer abuts against the peak of the inner separation blade.
4. The method of claim 3, wherein in step S3, before the external separation stop sheet is inserted into the battery case, the inner wall of the battery case is polished to remove the oxide film on the inner wall.
5. The method of claim 4, wherein the battery case is made of an aluminum alloy material, and the outer barrier sheets are sequentially fixed to the inner wall of the battery case after the oxide film on the inner wall of the battery case is removed.
6. The method of claim 5, wherein the external separation stop is fixed by heating the insulating sheet to melt the insulating sheet and pressing the peaks of the external separation stop against the inner wall of the battery case.
7. The method for manufacturing a lithium battery with needle punching prevention as claimed in claim 6, wherein after the fixation of the outer separation baffle is completed, the gap between the battery case and the outer separation baffle is directly filled to form an outer adhesive layer, and the outer adhesive layer is tightly attached to the outer wall of the battery case.
8. The method of claim 7, wherein in S4, the mold includes a battery case fixing cavity and a battery core fixing cavity, the battery core and the battery case are sequentially placed inside the battery case fixing cavity and the battery core fixing cavity, and the through groove between the battery core and the battery case is filled with the insulating glue.
9. The method of claim 8, wherein the step of sealing the two ends of the lithium battery at S5 comprises removing the insulation paste overflowing from the two ends of the battery case and extending the insulation paste from the two ends of the battery core to facilitate direct contact between the positive and negative plates and the battery core when the positive and negative plates are mounted.
10. The method for manufacturing a lithium battery with needle punching prevention as claimed in claim 9, wherein the middle parts of the inner sides of the positive and negative electrode plates are connected with the battery inner core, and the edges of the positive and negative electrode plates are inwardly buckled on the outer wall of the battery case to complete the fixation of the positive and negative electrode plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110497233.7A CN113437408B (en) | 2021-05-07 | 2021-05-07 | Manufacturing method of anti-needling lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110497233.7A CN113437408B (en) | 2021-05-07 | 2021-05-07 | Manufacturing method of anti-needling lithium battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113437408A true CN113437408A (en) | 2021-09-24 |
| CN113437408B CN113437408B (en) | 2022-07-19 |
Family
ID=77753056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110497233.7A Active CN113437408B (en) | 2021-05-07 | 2021-05-07 | Manufacturing method of anti-needling lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113437408B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008034295A1 (en) * | 2006-09-19 | 2008-03-27 | Shenzhen Bak Battery Co., Ltd | A lithium ion battery electrode plate,a lithium ion battery electrode core and the preparation method of the same |
| CN202817080U (en) * | 2012-05-21 | 2013-03-20 | 东莞市鸿德电池有限公司 | Lithium ion battery and anti-acupuncture structural cell thereof |
| CN103325987A (en) * | 2013-05-30 | 2013-09-25 | 苏州启智机电技术有限公司 | Punching-resistant lithium battery |
| CN204204985U (en) * | 2014-10-11 | 2015-03-11 | 东莞市鸿德电池有限公司 | The anti-needling structure battery core of lithium ion battery and lithium ion battery thereof |
| CN104953170A (en) * | 2015-06-03 | 2015-09-30 | 北京波士顿动力电池有限公司 | Structure for improving safety of needling operation outside battery |
| KR20180055341A (en) * | 2016-11-17 | 2018-05-25 | 주식회사 엘지화학 | Battery Cell Having Reinforcement Sheet and Battery Pack Having the Same |
| CN109860724A (en) * | 2019-01-07 | 2019-06-07 | 天津力神电池股份有限公司 | A kind of preparation method for the laminated batteries can be improved safety of acupuncture performance |
| CN110854388A (en) * | 2019-11-22 | 2020-02-28 | 芜湖天弋能源科技有限公司 | Lithium ion battery |
| CN110994036A (en) * | 2019-12-24 | 2020-04-10 | 辽宁九夷锂能股份有限公司 | Prevent acupuncture cylinder type lithium cell |
| US20200227692A1 (en) * | 2019-01-15 | 2020-07-16 | Huawei Technologies Co., Ltd. | Battery Packaging Material and Battery |
| CN211238410U (en) * | 2020-01-14 | 2020-08-11 | 湖北兰博泰新能源有限公司 | Anti-needling liquid flexible package lithium ion battery |
| CN112201794A (en) * | 2020-10-30 | 2021-01-08 | 浙江锂盾新能源材料有限公司 | Current collector composite material for anti-needling lithium battery and manufacturing method thereof |
-
2021
- 2021-05-07 CN CN202110497233.7A patent/CN113437408B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008034295A1 (en) * | 2006-09-19 | 2008-03-27 | Shenzhen Bak Battery Co., Ltd | A lithium ion battery electrode plate,a lithium ion battery electrode core and the preparation method of the same |
| CN202817080U (en) * | 2012-05-21 | 2013-03-20 | 东莞市鸿德电池有限公司 | Lithium ion battery and anti-acupuncture structural cell thereof |
| CN103325987A (en) * | 2013-05-30 | 2013-09-25 | 苏州启智机电技术有限公司 | Punching-resistant lithium battery |
| CN204204985U (en) * | 2014-10-11 | 2015-03-11 | 东莞市鸿德电池有限公司 | The anti-needling structure battery core of lithium ion battery and lithium ion battery thereof |
| CN104953170A (en) * | 2015-06-03 | 2015-09-30 | 北京波士顿动力电池有限公司 | Structure for improving safety of needling operation outside battery |
| KR20180055341A (en) * | 2016-11-17 | 2018-05-25 | 주식회사 엘지화학 | Battery Cell Having Reinforcement Sheet and Battery Pack Having the Same |
| CN109860724A (en) * | 2019-01-07 | 2019-06-07 | 天津力神电池股份有限公司 | A kind of preparation method for the laminated batteries can be improved safety of acupuncture performance |
| US20200227692A1 (en) * | 2019-01-15 | 2020-07-16 | Huawei Technologies Co., Ltd. | Battery Packaging Material and Battery |
| CN110854388A (en) * | 2019-11-22 | 2020-02-28 | 芜湖天弋能源科技有限公司 | Lithium ion battery |
| CN110994036A (en) * | 2019-12-24 | 2020-04-10 | 辽宁九夷锂能股份有限公司 | Prevent acupuncture cylinder type lithium cell |
| CN211238410U (en) * | 2020-01-14 | 2020-08-11 | 湖北兰博泰新能源有限公司 | Anti-needling liquid flexible package lithium ion battery |
| CN112201794A (en) * | 2020-10-30 | 2021-01-08 | 浙江锂盾新能源材料有限公司 | Current collector composite material for anti-needling lithium battery and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113437408B (en) | 2022-07-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2021017905A1 (en) | Battery, battery cell, and top cover assembly thereof | |
| CN106601960B (en) | Button cell and manufacturing method thereof | |
| CN210535760U (en) | Electrode assembly and secondary battery | |
| CN111554982B (en) | Winding battery cell, preparation method thereof, battery and electronic product | |
| KR100705101B1 (en) | Film-covered electric device having pressure release opening | |
| JP4440548B2 (en) | Battery and manufacturing method thereof | |
| JP2006093101A (en) | Lithium polymer battery with strength reinforcement layer and its manufacturing method | |
| CN112310409A (en) | Electrode assembly and secondary battery | |
| JP4303801B2 (en) | Secondary battery safety device | |
| JP6423250B2 (en) | Secondary battery | |
| JP4251882B2 (en) | Nonaqueous electrolyte secondary battery | |
| JP3829086B2 (en) | Non-aqueous electrolyte battery and manufacturing method thereof | |
| CN112930616A (en) | Battery cell, battery using battery cell and electronic equipment | |
| CN113437408B (en) | Manufacturing method of anti-needling lithium battery | |
| KR101753938B1 (en) | Secondary battery with improved electric insulation and manufacture method thereof | |
| JPH1074500A (en) | Sealed battery and its manufacture | |
| JP3063924B2 (en) | Thin battery | |
| JPS63174265A (en) | Manufacture of thin type enclosed lead storage battery | |
| CN111900276A (en) | Battery shell and battery | |
| KR101100913B1 (en) | Safety exhaust assembly, method for manufacturing same, and battery having safety exhaust assembly | |
| KR102010037B1 (en) | Sealing tool and manufacturing method for pouch type secondary battery | |
| JP2019029642A (en) | Electrochemical cell module and manufacturing method of electrochemical cell module | |
| JP2001283897A (en) | Battery and its manufacturing method | |
| CN209133542U (en) | A kind of secondary cell lamina tecti component and secondary cell | |
| CN218731362U (en) | Novel battery with lugs at two sides |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |