CN115377480A - Novel cylinder lithium cell structure - Google Patents
Novel cylinder lithium cell structure Download PDFInfo
- Publication number
- CN115377480A CN115377480A CN202210967642.3A CN202210967642A CN115377480A CN 115377480 A CN115377480 A CN 115377480A CN 202210967642 A CN202210967642 A CN 202210967642A CN 115377480 A CN115377480 A CN 115377480A
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- China
- Prior art keywords
- pole
- utmost point
- electrode assembly
- current collecting
- main body
- 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.)
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 17
- YWXYYJSYQOXTPL-SLPGGIOYSA-N isosorbide mononitrate Chemical compound [O-][N+](=O)O[C@@H]1CO[C@@H]2[C@@H](O)CO[C@@H]21 YWXYYJSYQOXTPL-SLPGGIOYSA-N 0.000 claims abstract description 32
- 238000007789 sealing Methods 0.000 claims abstract description 21
- 230000005611 electricity Effects 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 4
- 238000009826 distribution Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000003466 welding Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 5
- 238000001514 detection method Methods 0.000 abstract description 4
- 239000000178 monomer Substances 0.000 abstract description 3
- 230000002159 abnormal effect Effects 0.000 abstract description 2
- 230000005405 multipole Effects 0.000 description 8
- 239000011888 foil Substances 0.000 description 6
- -1 aluminum-manganese Chemical compound 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910000570 Cupronickel Inorganic materials 0.000 description 2
- 229910000861 Mg alloy Inorganic materials 0.000 description 2
- 229910000914 Mn alloy Inorganic materials 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000004734 Polyphenylene sulfide Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 description 2
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920001707 polybutylene terephthalate Polymers 0.000 description 2
- 229920000069 polyphenylene sulfide Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 238000004804 winding Methods 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
- 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 of a single cell or a single battery
- H01M50/102—Primary casings, jackets or wrappings of a single cell or a single battery characterised by their shape or physical structure
- H01M50/107—Primary casings, jackets or wrappings of a single cell or a single battery 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
- 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
- H01M50/528—Fixed electrical connections, i.e. not intended for disconnection
-
- 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
-
- 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
- H01M50/536—Electrode connections inside a battery casing characterised by the method of fixing the leads to the electrodes, e.g. by welding
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a novel cylindrical lithium battery structure, which comprises a shell and an electrode assembly, wherein the center of the electrode assembly is a central hole, a positive multi-pole-ear and a negative multi-pole-ear are led out from the upper part of the electrode assembly, the positive multi-pole-ear and the negative multi-pole-ear are distributed on the opposite side of the central hole and are symmetrically distributed, an end cover is arranged above the electrode assembly, the end cover comprises a main body, a pole, an insulating member and a sealing member, a through hole is formed in the center of the main body, the insulating member wraps the outer circumferential surface of the pole, the pole is positioned in the through hole, the insulating member seals a gap between the pole and the end cover, the sealing member seals the main body and the upper edge of the shell, the negative multi-pole-ear is electrically connected with the main body, and the positive multi-pole-ear is electrically connected with the pole. According to the invention, the anode multi-tab and the cathode multi-tab are arranged on the same side in the electrode assembly, so that the assembly process flow is reduced, the production cost is reduced, the size and the shape of a welding spot are convenient to observe, the detection difficulty of the process of a battery monomer is reduced, and the abnormal product detection rate is improved.
Description
Technical Field
The invention belongs to the technical field of lithium batteries, and particularly relates to a novel cylindrical lithium battery structure.
Background
Most of the existing cylindrical lithium secondary battery structures adopt a structure that tabs with opposite polarities are led out from two ends of a cylindrical electrode component, so that different schemes and different devices are required to be adopted when the tabs and the negative electrode tabs are welded or electrically connected with a secondary battery metal shell, and the increase of assembly procedures, the increase of process difficulty and the increase of manufacturing cost are caused.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a novel cylindrical lithium battery structure.
The purpose of the invention is realized by the following technical scheme: the utility model provides a novel cylinder lithium cell structure, includes one end opening tubular structure's casing, be provided with electrode subassembly in the casing, electrode subassembly's center is provided with the centre bore, electrode subassembly's upper portion is provided with anodal multiple tabs and negative pole multiple tabs, anodal multiple tabs and the distribution of negative pole multiple tabs are in the offside and the symmetric distribution of centre bore, electrode subassembly's top is provided with the end cover, the end cover includes main part, utmost point post, insulating member, sealing member, the center of main part is provided with the through-hole, insulating member parcel utmost point post outer peripheral surface, utmost point post is located in the through-hole, insulating member seals utmost point post with the end cover clearance, sealing member seals the main part with follow on the casing, negative pole multiple tabs electricity is connected the main part, anodal multiple tabs electricity is connected utmost point post.
Preferably, the sealing member wraps the edge of the main body, and the upper edge of the shell is pressed inwards to form the sealing member, so that the manufacturing is convenient, and the sealing performance of the shell and the main body is enhanced.
Preferably, the cross section of the pole is I-shaped, and the upper part and the lower part of the pole respectively press the insulating component on the upper surface and the lower surface of the main body, so that the insulating component is prevented from falling off, and the risk of short circuit of the anode and the cathode is reduced.
Preferably, an annular inward concave groove path is formed in the shell, the inward concave groove path is located between the electrode assembly and the sealing component, the lower edge of the inward concave groove path is tightly attached to the upper end of the electrode assembly, the relative position of the electrode assembly in a battery monomer is fixed, the electrode assembly is prevented from shaking to cause damage or electric connection failure, and the safety performance and the service life of the battery monomer are improved.
Preferably, a positive current collecting member and a negative current collecting member are arranged between the end cover and the electrode assembly, the positive current collecting member and the negative current collecting member are both semicircular, the lower surface of the positive current collecting member is electrically connected with the positive multi-tab, the upper surface of the positive current collecting member is electrically connected with the pole, the lower surface of the negative current collecting member is electrically connected with the negative multi-tab, and the upper surface of the negative current collecting member is electrically connected with the main body.
Preferably, the positive pole multi-pole lug or/and the negative pole multi-pole lug is/are provided with an external lead lug, one end of the external lead lug is electrically connected with the positive pole multi-pole lug or/and the negative pole multi-pole lug, and the other end of the external lead lug is electrically connected with the pole or/and the main body.
Preferably, the main body is provided with a liquid injection hole.
The invention has the following advantages:
1. through the design of the same side of the positive electrode multi-pole-ear and the negative electrode multi-pole-ear in the electrode assembly, the pole-ears with opposite polarities can be electrically connected with the single battery metal shell by the same equipment, so that an assembly process flow is reduced, and the equipment purchase cost and the manufacturing cost of a production line are reduced;
2. the positive electrode multi-pole lug and the negative electrode multi-pole lug are arranged on one side of the opening end of the shell, and the size and the appearance of a welding spot can be observed from the outside after electric connection processing, so that the detection difficulty of the manufacturing process of the single battery is reduced, and the abnormal product detection rate is improved.
Drawings
FIG. 1 is a schematic view of a cross-section of a negative electrode multi-tab direct welding structure of the present invention;
fig. 2 is a schematic view of a multi-tab direct welding cross-section structure of the present invention;
fig. 3 is a schematic structural view of a multi-tab welding section through an externally leading tab of the invention;
FIG. 4 is a schematic view of the cross section of the positive electrode multi-tab direct welding of the present invention;
fig. 5 is a schematic sectional view of the current collecting member according to the present invention.
In the figure, 1, a housing; 2. an electrode assembly; 3. a plurality of tabs are arranged on the negative electrode; 4. a plurality of positive electrode tabs; 5. a main body; 6. a pole column; 7. an insulating member; 8. a sealing member; 9. an inner concave groove path; 10. leading out a tab; 11. a negative current collecting member; 12. a positive current collecting member; 13. a liquid injection hole; 14. a central bore.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described in detail and completely with reference to the accompanying drawings.
Example 1, as shown in fig. 5, a novel cylindrical lithium battery structure comprises a casing 1 with an open end and a cylindrical structure, the casing 1 is a hollow cylindrical container with a closed end and an open end, the casing 1 is provided with a containing cavity, an electrode assembly 2 is placed in the containing cavity, the electrode assembly 2 is formed by winding a positive electrode plate, a negative electrode plate and a diaphragm, the center of the electrode assembly 2 is a central hole 14, a positive multi-tab 4 and a negative multi-tab 3 are led out from the upper part of the electrode assembly 2, the positive multi-tab 4 and the negative multi-tab 3 are composed of a plurality of tabs, the positive multi-tab 4 and the negative multi-tab 3 are distributed on the opposite sides of the central hole 14 and symmetrically distributed, the positive multi-tab 4 and the negative multi-tab 3 are mechanically rubbed or orderly bent inwards to fold the tabs with the same polarity together, an end cover is arranged above the electrode assembly 2, the end cap comprises a main body 5, a pole 6, an insulating member 7 and a sealing member 8, wherein the center of the main body 5 is provided with a through hole which is round or in other shapes, the position of the main body close to the edge is provided with a liquid injection hole 13 which can be used for injecting electrolyte after sealing and opening, the insulating member 7 wraps the outer circumferential surface of the pole 6, the pole 6 is positioned in the through hole, the insulating member 7 seals the gap between the pole 6 and the end cap, the sealing member 8 seals the upper edge of the main body 5 and the shell 1, the negative multi-pole 3 is electrically connected with the main body 5, the positive multi-pole 4 is electrically connected with the pole 6, the sealing member 8 wraps the edge of the main body 5, the upper edge of the shell 1 is bent inwards by at least 90 degrees, the sealing member 8 is pressed, the main body 5 and the shell 1 form a closed space, the transverse section of the pole 6 is I-shaped, the upper part and the lower part of the pole 6 respectively press-connect the insulating member 7 on the upper surface and the lower surface of the main body 5, the shell 1 is provided with an annular inwards-recessed inwards recessed groove path 9, the inner concave groove path 9 is positioned between the electrode component 2 and the sealing component 8, the lower edge of the inner concave groove path 9 is tightly attached to the upper end of the electrode component 2, the positive current collecting component 12 and the negative current collecting component 11 are installed between the end cover and the electrode component 2, the positive current collecting component 12 and the negative current collecting component 11 are both semicircular, the positive multi-tab 4 is welded on the lower surface of the positive current collecting component 12, the pole 6 is welded on the upper surface of the positive current collecting component 12, the negative multi-tab 3 is welded on the lower surface of the negative current collecting component 11, and the main body 5 is welded on the upper surface of the negative current collecting component 11.
In example 2, as shown in fig. 1, an external lead tab 10 is provided on the positive multi-tab 4, one end of the external lead tab 10 is welded to the positive multi-tab 4, the other end of the external lead tab 10 is welded to the electrode post 6, and the negative multi-tab 3 is directly welded to the main body 5.
In example 3, as shown in fig. 2, the positive electrode multi-tab 4 was directly welded to the electrode post 6, and the negative electrode multi-tab 3 was directly welded to the body 5.
In example 4, as shown in fig. 3, the external tabs 10 are disposed on the positive electrode multi-tab 4 and the negative electrode multi-tab 3, one end of each external tab 10 is welded to the positive electrode multi-tab 4 and the negative electrode multi-tab 3, and the other end of each external tab 10 is welded to the post 6 and the main body 5.
In example 5, as shown in fig. 4, an external lead tab 10 is provided on the negative multi-tab 3, one end of the external lead tab 10 is welded to the negative multi-tab 3, the other end of the external lead tab 10 is welded to the main body 5, and the positive multi-tab 4 is directly welded to the post 6.
In the embodiment, the housing 1 is integrally formed by stamping and stretching a nickel-plated steel plate or a stainless steel plate, the main body 5 is a nickel-plated steel or stainless steel disc, the positive electrode post 6 is a rivet made of industrial pure aluminum or aluminum-manganese alloy or aluminum-magnesium alloy, and the insulating member 7 and the sealing member 8 are injection molded by polypropylene (PP), polybutylene terephthalate (PBT), soluble Polytetrafluoroethylene (PFA), polyphenylene Sulfide (PPs) or other insulating and electrolyte corrosion resistant materials.
The positive multi-pole-lug 4 pole piece foil adopts aluminum foil or other metal foils which can be used for the positive pole, the negative multi-pole-lug 3 pole piece foil adopts copper foil or other metal foils which can be used for the negative pole, through laser die cutting or other die cutting modes, the pole lugs which are distributed at intervals are formed in the area where the empty foil is not coated on the edge of the pole pieces, and the pole lugs are positioned on the same side of the electrode assembly 2 after being wound and are distributed symmetrically to the central hole 14.
The anode leading tab 10 and the anode current collecting component 12 are made of industrial pure aluminum or aluminum-manganese alloy or aluminum-magnesium alloy material.
The negative electrode external leading tab 10 can be made of nickel or copper-nickel composite material, and the negative electrode current collecting member 11 can be made of copper or copper-nickel plated material.
Claims (7)
1. A novel cylindrical lithium battery structure comprises a shell (1) with an open end and a cylindrical structure, wherein an electrode assembly (2) is arranged in the shell (1), a center hole (14) is formed in the center of the electrode assembly (2), and the novel cylindrical lithium battery structure is characterized in that: the upper portion of electrode subassembly (2) is provided with anodal multiple tabs (4) and negative pole multiple tabs (3), anodal multiple tabs (4) distribute with negative pole multiple tabs (3) the offside and the symmetric distribution of centre bore (14), the top of electrode subassembly (2) is provided with the end cover, the end cover includes main part (5), utmost point post (6), insulating member (7), sealing member (8), the center of main part (5) is provided with the through-hole, insulating member (7) parcel utmost point post (6) outer circumferential surface, utmost point post (6) are located in the through-hole, insulating member (7) are sealed utmost point post (6) with the end cover clearance, sealing member (8) are sealed main part (5) with casing (1) is gone up to be followed, negative pole multiple tabs (3) electricity is connected main part (5), anodal multiple tabs (4) electricity is connected utmost point post (6).
2. The novel cylindrical lithium battery structure of claim 1, wherein: the sealing component (8) wraps the edge of the main body (5), and the upper edge of the shell (1) is pressed inwards to press the sealing component (8).
3. The novel cylindrical lithium battery structure of claim 1, wherein: the cross section of the pole (6) is I-shaped, and the upper part and the lower part of the pole (6) respectively press the insulating member (7) on the upper surface and the lower surface of the main body (5).
4. The novel cylindrical lithium battery structure as claimed in any one of claims 2 or 3, wherein: the electrode assembly is characterized in that an annular inner concave groove path (9) which is sunken inwards is arranged on the shell (1), the inner concave groove path (9) is located between the electrode assembly (2) and the sealing component (8), and the lower edge of the inner concave groove path (9) is tightly attached to the upper end of the electrode assembly (2).
5. The novel cylindrical lithium battery structure of claim 4, wherein: an anode current collecting component (12) and a cathode current collecting component (11) are arranged between the end cover and the electrode assembly (2), the anode current collecting component (12) and the cathode current collecting component (11) are both semicircular, the lower surface of the anode current collecting component (12) is electrically connected with the anode multi-tab (4), the upper surface of the anode current collecting component (12) is electrically connected with the pole (6), the lower surface of the cathode current collecting component (11) is electrically connected with the cathode multi-tab (3), and the upper surface of the cathode current collecting component (11) is electrically connected with the main body (5).
6. The novel cylindrical lithium battery structure of claim 4, wherein: be provided with on anodal many utmost point ear (4) or/and the many utmost point ear of negative pole (3) and draw utmost point ear (10) outward, draw utmost point ear (10) one end electricity outward and connect anodal many utmost point ear (4) or/and the many utmost point ear of negative pole (3), draw utmost point ear (10) other end electricity outward and connect utmost point post (6) or/and main part (5).
7. The novel cylindrical lithium battery structure of claim 1, wherein: the main body (5) is provided with a liquid injection hole (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210967642.3A CN115377480A (en) | 2022-08-12 | 2022-08-12 | Novel cylinder lithium cell structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210967642.3A CN115377480A (en) | 2022-08-12 | 2022-08-12 | Novel cylinder lithium cell structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115377480A true CN115377480A (en) | 2022-11-22 |
Family
ID=84066156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210967642.3A Pending CN115377480A (en) | 2022-08-12 | 2022-08-12 | Novel cylinder lithium cell structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115377480A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116031466A (en) * | 2023-03-30 | 2023-04-28 | 深圳市誉辰智能装备股份有限公司 | Method for manufacturing cylindrical battery |
-
2022
- 2022-08-12 CN CN202210967642.3A patent/CN115377480A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116031466A (en) * | 2023-03-30 | 2023-04-28 | 深圳市誉辰智能装备股份有限公司 | Method for manufacturing cylindrical battery |
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