CN110581250B - Full-tab structure, soft-package battery core and soft-package battery - Google Patents
Full-tab structure, soft-package battery core and soft-package battery Download PDFInfo
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- CN110581250B CN110581250B CN201910864740.2A CN201910864740A CN110581250B CN 110581250 B CN110581250 B CN 110581250B CN 201910864740 A CN201910864740 A CN 201910864740A CN 110581250 B CN110581250 B CN 110581250B
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- current collecting
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- collecting empty
- phase change
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- 239000011888 foil Substances 0.000 claims abstract description 78
- 238000003466 welding Methods 0.000 claims abstract description 45
- 238000004804 winding Methods 0.000 claims abstract description 34
- 239000000463 material Substances 0.000 claims description 22
- 239000012782 phase change material Substances 0.000 claims description 20
- 239000002131 composite material Substances 0.000 claims description 11
- 239000007791 liquid phase Substances 0.000 claims description 10
- 239000012188 paraffin wax Substances 0.000 claims description 10
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- 238000005538 encapsulation Methods 0.000 claims description 8
- 239000003063 flame retardant Substances 0.000 claims description 8
- 239000007790 solid phase Substances 0.000 claims description 8
- 239000002253 acid Substances 0.000 claims description 4
- HPTYUNKZVDYXLP-UHFFFAOYSA-N aluminum;trihydroxy(trihydroxysilyloxy)silane;hydrate Chemical compound O.[Al].[Al].O[Si](O)(O)O[Si](O)(O)O HPTYUNKZVDYXLP-UHFFFAOYSA-N 0.000 claims description 4
- 229910052621 halloysite Inorganic materials 0.000 claims description 4
- 239000000377 silicon dioxide Substances 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 239000003513 alkali Substances 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000004806 packaging method and process Methods 0.000 claims description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 6
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 6
- 239000002985 plastic film Substances 0.000 description 5
- 229920006255 plastic film Polymers 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- -1 lithium hexafluorophosphate Chemical compound 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000005404 monopole Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
Classifications
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
- H01M50/538—Connection of several leads or tabs of wound or folded electrode stacks
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/574—Devices or arrangements for the interruption of current
- H01M50/578—Devices or arrangements for the interruption of current in response to pressure
-
- 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
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Secondary Cells (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention provides a full-tab structure, a soft-package battery core and a soft-package battery. The full tab structure comprises a first winding core and a second winding core which are connected in parallel, wherein the first winding core is provided with a first positive current collecting empty foil and a first negative current collecting empty foil, the second winding core is provided with a second positive current collecting empty foil and a second negative current collecting empty foil, the first winding core and the second winding core are overlapped, the first positive current collecting empty foil and the second positive current collecting empty foil are respectively correspondingly and parallelly arranged, the full tab structure also comprises a full tab, the full tab is provided with a first welding part, a connecting part and a second welding part, the first welding part, the second welding part and the second welding part form a U-shaped groove together, and a cushion block is embedded in the U-shaped groove. The full-tab structure, the soft-package battery core and the soft-package battery can effectively prevent the deformation of the positive tab or the negative tab and the current collecting empty foil after welding, ensure the flatness of the current collecting empty foil and improve the safety performance and the working performance of the battery.
Description
Technical Field
The invention belongs to the technical field of battery manufacturing, and particularly relates to a full-tab structure, a soft-package battery core and a soft-package battery.
Background
The soft package lithium ion battery is classified according to the full tab structure of the internal battery, and can be divided into a monopole tab winding structure, a multipolar tab winding structure and a full tab winding structure, wherein the monopole tab and the multipolar tab can bend the tab, and a small space (0.2-3 mm) is reserved between the winding core diaphragm and the aluminum plastic film for top sealing after the tab and the winding core are welded. The full tab winding knot is characterized in that the empty foil exists at the corner, the empty foil cannot be bent after the tab is welded, and the welding is performed after the two ends of the positive electrode tab and the negative electrode tab are required to be reserved with 7-12mm of empty foil, namely, a space of 7-12mm is reserved between the diaphragm and the aluminum plastic film for placing the empty foil. Because the thickness of the empty foil is smaller than that of the winding core, the aluminum plastic film at the position of 7-12mm can be deformed by vacuum adsorption, formation, secondary sealing and vacuum pumping after liquid injection and the like. After the double winding cores are connected in parallel, deformation is more easily caused, and from the aspect of appearance: the deformed aluminum-plastic film influences the appearance of the battery, and the appearance of the battery is poor; from an electrical performance perspective: the deformed aluminum-plastic film has a pressure on the edges of the positive pole piece, the negative pole piece and the diaphragm, the edges of the positive pole piece, the negative pole piece and the diaphragm are subjected to uneven external force, the polarization of positive pole material and negative pole material is serious after long-time circulation, the expansion deformation of the pole piece is obvious, the material is seriously dropped at the position after the battery is disassembled, the self-discharge is larger, and the service life of the battery is reduced; from the safety performance perspective: external force is applied to the position after expansion deformation, so that the short circuit probability is increased, and serious potential safety hazards exist.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to provide a full-tab structure, a soft-package battery core and a soft-package battery, which can effectively prevent the deformation of the positive tab or the negative tab and the current collecting empty foil after welding, ensure the flatness of the current collecting empty foil and improve the safety performance and the working performance of the battery.
In order to solve the above problems, the present invention provides a full tab structure, which comprises a first winding core and a second winding core connected in parallel, wherein the first winding core is provided with a first positive current collecting empty foil and a first negative current collecting empty foil, the second winding core is provided with a second positive current collecting empty foil and a second negative current collecting empty foil, the first winding core and the second winding core are overlapped, the first positive current collecting empty foil and the second positive current collecting empty foil are correspondingly arranged in parallel, the first negative current collecting empty foil and the second negative current collecting empty foil are correspondingly arranged in parallel, and the full tab structure further comprises a full tab, the full tab is provided with a first welding part welded with the first positive current collecting empty foil, a second welding part welded with the second positive current collecting empty foil and a connecting part positioned between the first welding part and the second welding part, the first welding part and the second welding part jointly form a U-shaped groove, and the cushion block is embedded in the U-shaped groove; or the full tab is provided with a first welding part welded with the first negative current collecting empty foil, a second welding part welded with the second negative current collecting empty foil and a connecting part positioned between the first welding part and the second welding part, the first welding part, the connecting part and the second welding part jointly form a U-shaped groove, and a cushion block is embedded in the U-shaped groove.
Preferably, the connecting portion is perpendicular to the first and second welding portions.
Preferably, the cushion block is provided with an encapsulation shell, and a composite phase change material is arranged in the encapsulation shell.
Preferably, the composite phase change material is a solid-solid phase change material or a solid-liquid phase change material; and/or the composite phase change material is an acid and alkali resistant phase change material.
Preferably, the solid-liquid phase change material comprises a mixture of paraffin wax and expanded graphite.
Preferably, the solid-solid phase change material or solid-liquid phase change material further comprises a flame retardant component.
Preferably, the flame retardant component comprises at least one of chlorinated paraffin, silica, halloysite.
Preferably, the material of the packaging shell is an insulating material.
The invention also provides a soft-package battery core which comprises the full-tab structure.
The invention also provides a soft package battery, which comprises the soft package battery core.
According to the full-tab structure, the soft-package battery core and the soft-package battery, the full tab is welded in the gap between the first positive current collecting empty foil and the second positive current collecting empty foil or the gap between the first negative current collecting empty foil and the second negative current collecting empty foil, the cushion block arranged in the U-shaped groove of the full tab supports the current collecting empty foils arranged in parallel and ensures the interval between the current collecting empty foils, and therefore deformation of the current collecting empty foils in the using process of the battery or after the current collecting empty foils are bent by external force (such as battery falling) can be effectively prevented, flatness of the current collecting empty foils is ensured, safety performance and working performance of the battery can be improved, and meanwhile, the full-tab structure is more convenient in assembly of the cushion block.
Drawings
Fig. 1 is a schematic structural diagram of a full tab structure according to an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
Fig. 3 is a schematic view of the structure of the omitted pad of fig. 2.
The reference numerals are expressed as:
1. A first winding core; 11. a first positive current collecting empty foil; 12. a first negative current collecting empty foil; 2. a second winding core; 21. a second positive current collecting empty foil; 22. a second negative current collecting empty foil; 3. full tab; 31. a first welded portion; 32. a second welded portion; 33. a connection part; 34. a U-shaped groove; 4. and (5) cushion blocks.
Detailed Description
Referring to fig. 1 to 3 in combination, according to an embodiment of the present invention, there is provided an all-tab structure, including a first winding core 1 and a second winding core 2 connected in parallel, the first winding core 1 having a first positive current collecting hollow foil 11 and a first negative current collecting hollow foil 12, the second winding core 2 having a second positive current collecting hollow foil 21 and a second negative current collecting hollow foil 22, the first winding core 1 being stacked with the second winding core 2, the first positive current collecting hollow foil 11 being disposed in parallel with the second positive current collecting hollow foil 21 in correspondence, the first negative current collecting hollow foil 12 being disposed in parallel with the second negative current collecting hollow foil 22 in correspondence, and further including an all-tab 3, the all-tab 3 having a first welded portion 31 welded with the first positive current collecting hollow foil 11, a second welded portion 32 welded with the second positive current collecting hollow foil 21, and a connection portion 33 between the first welded portion 31 and the second welded portion 32, the first and second current collecting hollow foil 12 forming a common U-shaped groove 34; or the full tab 3 has a first welding part 31 welded with the first negative current collecting empty foil 12, a second welding part 32 welded with the second negative current collecting empty foil 22, and a connecting part 33 between the first welding part 31 and the second welding part 32, wherein the first welding part 31, the connecting part 33, and the second welding part 32 together form a U-shaped groove 34, and the cushion block 4 is embedded in the U-shaped groove 34. In this technical solution, the full tab 3 is welded in the gap between the first positive current collecting empty foil 11 and the second positive current collecting empty foil 21 or in the gap between the first negative current collecting empty foil 12 and the second negative current collecting empty foil 22, and the cushion block 4 disposed in the U-shaped groove 34 of the full tab 3 supports the current collecting empty foils disposed in parallel (for example, the first positive current collecting empty foil 11 and the second positive current collecting empty foil 21 or the first negative current collecting empty foil 12 and the second negative current collecting empty foil 22) and ensures the space between the current collecting empty foils, which can effectively prevent the current collecting empty foils from deforming during the use of the battery or after being bent by external force (for example, when the battery falls), thereby ensuring the flatness of the current collecting empty foils, so as to improve the safety performance and the working performance of the battery.
Further, the connecting portion 33 is perpendicular to the first welding portion 31 and the second welding portion 32, so that insertion and removal of the cushion block 4 can be further facilitated, and meanwhile, the cushion block 4 is simpler in molding shape and more convenient to match.
As a preferred implementation manner of the cushion block 4, the cushion block 4 is provided with an encapsulation shell, the material of the encapsulation shell is an insulating material, a composite phase change material is arranged in the encapsulation shell, the adoption of the composite phase change material can ensure that the battery can dissipate heat by virtue of the phase change material when being charged and discharged at a low multiplying power, and the thermal shock can be reduced by utilizing the latent heat of the phase change when the battery is charged and discharged at a high multiplying power, so that the problems of battery short circuit and overheating at a cathode tab caused by the heat accumulation of a tab welding part, and the like caused by the melting of tab encapsulation adhesive or the burning of the cathode material are effectively reduced, and the service life and the use safety of the battery are prolonged. Further, the pad 4 is bonded to the first welded portion 31 and the second welded portion 32.
The composite phase change material is a solid-solid phase change material or a solid-liquid phase change material, for example, the solid-liquid phase change material comprises a mixture of paraffin and expanded graphite; preferably, the composite phase change material is an acid and alkali resistant phase change material, so that adverse effects of the phase change material and active components in the battery can be effectively prevented, and weak acids and weak bases such as hydrofluoric acid, lithium hydroxide and the like can be generated by hydrolysis of lithium hexafluorophosphate. If reacts with hydrofluoric acid, the content of hydrofluoric acid in the electrolyte can be reduced. Such as with lithium hydroxide, to affect the interfacial component. Destroying the interface structure. Thereby affecting electrochemical performance.
Further, the solid-solid phase change material or the solid-liquid phase change material further comprises a flame retardant component, wherein the flame retardant component comprises at least one of chlorinated paraffin, silicon dioxide and halloysite, so that the hidden danger of combustion of the composite phase change material can be effectively eliminated. Specifically, the phase change material mainly takes paraffin or fatty acid and inorganic salt as main materials, and polypropylene or polyethylene as a supporting material. By adjusting the proportion of the phase change material, for example, by adjusting the proportion of paraffin, it is determined whether the phase change is solid-solid phase change or solid-liquid phase change, for example, after the proportion of paraffin is less than 65%, the phase change is solid-solid phase change, so as to increase the flame retardance of the phase change material, one or more flame retardant additives are usually added into the phase change material, and the flame retardant additives can be chlorinated paraffin, halloysite, silicon dioxide and the like.
According to an embodiment of the invention, a soft-package battery core is further provided, which comprises the full-tab structure.
According to an embodiment of the invention, a soft package battery is further provided, which comprises the soft package battery core.
It will be readily appreciated by those skilled in the art that the above advantageous ways can be freely combined and superimposed without conflict.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention. The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present invention, and these modifications and variations should also be regarded as the scope of the invention.
Claims (7)
1. The full tab structure is characterized by comprising a first winding core (1) and a second winding core (2) which are connected in parallel, wherein the first winding core (1) is provided with a first positive current collecting empty foil (11) and a first negative current collecting empty foil (12), the second winding core (2) is provided with a second positive current collecting empty foil (21) and a second negative current collecting empty foil (22), the first winding core (1) is overlapped with the second winding core (2), the first positive current collecting empty foil (11) and the second positive current collecting empty foil (21) are correspondingly arranged in parallel, the first negative current collecting empty foil (12) and the second negative current collecting empty foil (22) are correspondingly arranged in parallel, the full tab structure further comprises a full tab (3), and the full tab structure is provided with a first welding part (31) welded with the first positive current collecting empty foil (11), a second welding part (32) welded with the second positive current collecting foil (21) and a second welding part (32) welded with the second positive current collecting foil (21), and a welding part (33) positioned between the first welding part and the second welding part (33) and the second welding part (34), and the welding part (33) forms a joint part (34); or the full tab (3) is provided with a first welding part (31) welded with the first negative current collecting empty foil (12), a second welding part (32) welded with the second negative current collecting empty foil (22) and a connecting part (33) positioned between the first welding part (31) and the second welding part (32), wherein the first welding part (31), the connecting part (33) and the second welding part (32) jointly form a U-shaped groove (34), and a cushion block (4) is embedded in the U-shaped groove (34); the cushion block (4) is provided with an encapsulation shell, and a composite phase change material is arranged in the encapsulation shell; the composite phase change material is a solid-solid phase change material or a solid-liquid phase change material; and/or the composite phase change material is an acid and alkali resistant phase change material; the packaging shell is made of insulating materials.
2. The full tab structure according to claim 1, wherein the connection portion (33) is perpendicular to the first and second welding portions (31, 32).
3. The full tab structure of claim 1 wherein the solid-liquid phase change material comprises a mixture of paraffin wax and expanded graphite.
4. The full tab structure of claim 1 wherein the solid-solid phase change material or solid-liquid phase change material further comprises a flame retardant component.
5. The full tab structure of claim 4 wherein the flame retardant component comprises at least one of chlorinated paraffin, silica, halloysite.
6. A soft-packaged battery cell comprising a full tab structure, wherein the full tab structure is the full tab structure of any one of claims 1 to 5.
7. A flexible battery comprising a flexible battery cell, wherein the flexible battery cell is the flexible battery cell of claim 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910864740.2A CN110581250B (en) | 2019-09-09 | 2019-09-09 | Full-tab structure, soft-package battery core and soft-package battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910864740.2A CN110581250B (en) | 2019-09-09 | 2019-09-09 | Full-tab structure, soft-package battery core and soft-package battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110581250A CN110581250A (en) | 2019-12-17 |
| CN110581250B true CN110581250B (en) | 2024-08-02 |
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| CN201910864740.2A Active CN110581250B (en) | 2019-09-09 | 2019-09-09 | Full-tab structure, soft-package battery core and soft-package battery |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111435727A (en) * | 2019-12-31 | 2020-07-21 | 蜂巢能源科技有限公司 | Battery tab welding structure, preparation method thereof and battery |
| CN114079096B (en) * | 2020-08-11 | 2024-07-23 | 北京小米移动软件有限公司 | Battery assembly and electronic device |
| WO2022116909A1 (en) * | 2020-12-04 | 2022-06-09 | 中澳储能电力科技（西安）有限公司 | High-capacity lithium-ion battery |
| CN112599935A (en) * | 2020-12-14 | 2021-04-02 | 天津市捷威动力工业有限公司 | Lithium ion power soft package battery tab and manufacturing method of battery |
| CN114122530A (en) * | 2021-11-22 | 2022-03-01 | 合肥国轩高科动力能源有限公司 | Roll core, square all-electrode-lug lithium ion battery and battery manufacturing method |
| CN114614069B (en) * | 2022-05-09 | 2022-08-26 | 宁德时代新能源科技股份有限公司 | Battery cell, manufacturing method thereof, battery and electric device |
| CN114976286B (en) * | 2022-05-28 | 2023-01-17 | 楚能新能源股份有限公司 | Lithium ion battery current collection structure |
| KR20240047080A (en) * | 2022-10-04 | 2024-04-12 | 주식회사 엘지에너지솔루션 | Battery cell wherein heat propagation is prevented |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN210379238U (en) * | 2019-09-09 | 2020-04-21 | 珠海格力电器股份有限公司 | Full utmost point ear structure, laminate polymer battery core, laminate polymer battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100776766B1 (en) * | 2006-05-17 | 2007-11-16 | 현대에너셀 주식회사 | Battery having upper terminal |
| CN201754421U (en) * | 2010-03-15 | 2011-03-02 | 陈性保 | Ultra-thin lithium ion polymer battery |
| CN206379418U (en) * | 2017-01-21 | 2017-08-04 | 东莞市华创电源有限公司 | A kind of aluminium pole ears of half groove profile |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210379238U (en) * | 2019-09-09 | 2020-04-21 | 珠海格力电器股份有限公司 | Full utmost point ear structure, laminate polymer battery core, laminate polymer battery |
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| Publication number | Publication date |
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| CN110581250A (en) | 2019-12-17 |
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