CN113363674A - Cylindrical battery - Google Patents
Cylindrical battery Download PDFInfo
- Publication number
- CN113363674A CN113363674A CN202110749684.5A CN202110749684A CN113363674A CN 113363674 A CN113363674 A CN 113363674A CN 202110749684 A CN202110749684 A CN 202110749684A CN 113363674 A CN113363674 A CN 113363674A
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- Prior art keywords
- cylindrical battery
- section
- fitting
- pole
- battery according
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 8
- 230000013011 mating Effects 0.000 claims description 21
- 230000007704 transition Effects 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000035515 penetration Effects 0.000 claims description 3
- 230000000284 resting effect Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 abstract description 23
- 238000000034 method Methods 0.000 abstract description 7
- 238000009434 installation Methods 0.000 description 5
- 238000004804 winding Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000001788 irregular Effects 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
-
- 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
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
- H01M50/152—Lids or covers characterised by their shape for cells 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
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/505—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising a single busbar
-
- 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
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/514—Methods for interconnecting adjacent batteries or cells
- H01M50/516—Methods for interconnecting adjacent batteries or cells by welding, soldering or brazing
-
- 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention discloses a cylindrical battery which comprises a shell, a pole post and a confluence disc, wherein the shell is provided with a closed end, the pole post penetrates through the closed end of the shell, a matching through hole is formed in the pole post, the confluence disc is arranged in the shell, a matching bulge matched with the matching through hole is formed in the confluence disc, and the outer peripheral surface of the matching bulge is welded and connected with the inner peripheral surface of the matching through hole. This cylindrical battery is because being equipped with the cooperation on the utmost point post and perforating and converging the drum and be equipped with the fenestrate cooperation of cooperation arch, need not to insert welding equipment from the open end of casing in the assembling process, and it is more convenient to operate, and welding quality is better to promote cylindrical battery's assembly yield, promoted cylindrical battery's use reliability.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a cylindrical battery.
Background
Along with the development of battery technology, a battery without pole lugs is provided, the battery without pole lugs comprises a shell, a winding core, a bus disc and a pole post, and the bus disc is connected with the winding core and the pole post, so that the winding core and the pole post are conducted. Among the prior art, need stretch into the casing with welding set and carry out the welding of cylinder manifold and utmost point post, it is very inconvenient to operate like this to the condition emergence that welding is not firm appears easily.
Disclosure of Invention
The invention aims to provide a cylindrical battery, which has the advantages that the welding operation of a confluence disc and a pole of the cylindrical battery is very simple, the welding reliability is higher, and the reliability of the cylindrical battery is improved.
In order to achieve the technical effects, the technical scheme of the invention is as follows:
the invention discloses a cylindrical battery, comprising: a housing having a closed end; the pole column penetrates through the closed end of the shell, and a matching perforation is arranged on the pole column; the current-collecting disc is arranged in the shell, a matching protrusion matched with the through hole is arranged on the current-collecting disc, and the outer peripheral surface of the matching protrusion is in welded connection with the inner peripheral surface of the matching through hole.
In some embodiments, the mating bore includes a diverging section, a transition section, and a mating section, the mating section mating with the mating protrusion, the diverging section having a maximum diameter greater than a diameter of the transition section, the transition section having a diameter greater than a diameter of the mating section.
In some embodiments, the pole includes a body and a stopping portion connected to one end of the body, the body is disposed on the housing in a penetrating manner, and the stopping portion stops against the confluence disc.
In some specific embodiments, the cylindrical battery includes an insulating structure, the insulating structure is sleeved on the body, and one side of the insulating structure abuts against the abutting portion.
In some more specific embodiments, the pole further comprises a flanged portion connected to the other end of the body, the flanged portion resting against the other side of the insulating structure.
In some embodiments, the mating height of the mating protrusion and the mating through hole is H, which satisfies the relationship: h is more than or equal to 0.3 mm.
In some embodiments, the cylindrical battery further comprises an insulating support member disposed within the housing and sandwiched between the bus bar and the closed section of the housing.
In some specific embodiments, the insulating support has an avoiding perforation, and the pole is fitted in the avoiding perforation.
In some specific embodiments, the insulating support has a support flange on which the bus bar is supported.
In some embodiments, the confluence disc is a sheet metal part, and the matching protrusion is a stamping protrusion.
The cylindrical battery has the beneficial effects that: because be equipped with the cooperation on utmost point post and perforate and converge and be equipped with on the dish with the perforation cooperation protruding of cooperation, need not to insert welding equipment from the open end of casing in the assembling process, it is more convenient to operate, and welding quality is better, can solve the problem that the utmost point post of cylinder battery bottom can't be connected with the unable big cross-section of electric core betterly to promote the assembly yield of cylinder battery, promoted the reliability in utilization of cylinder battery.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a schematic structural view of a cylindrical battery according to an embodiment of the present invention;
fig. 2 is a partial structural sectional view of a cylindrical battery according to an embodiment of the present invention.
Reference numerals:
1. a housing;
2. a pole column; 201. matching with the through hole; 2011. a gradual expansion section; 2012. a transition section; 2013. a mating segment; 21. a body; 22. a stopping part; 23. flanging part;
3. a confluence disc; 31. fitting projection
4. An insulating structure;
5. an insulating support; 51. avoiding the perforation.
Detailed Description
In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, features defined as "first" and "second" may explicitly or implicitly include one or more of the features for distinguishing between descriptive features, non-sequential, non-trivial and non-trivial. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The specific structure of the cylindrical battery of the embodiment of the present invention is described below with reference to fig. 1 to 2.
The invention discloses a cylindrical battery, which comprises a shell 1, an electrode post 2 and a convergence plate 3, wherein the shell 1 is provided with a closed end, the electrode post 2 penetrates through the closed end of the shell 1, the electrode post 2 is provided with a matching through hole 201, the convergence plate 3 is arranged in the shell 1, the convergence plate 3 is provided with a matching bulge 31 which is connected with the matching through hole 201, and the outer peripheral surface of the matching bulge 31 is welded and connected with the inner peripheral surface of the matching through hole 201, as shown in fig. 1-2.
It can be understood that, because be equipped with the cooperation on utmost point post 2 and perforate 201 and converge and be equipped with on the dish 3 with the cooperation protruding 31 of the perforation 201 of cooperation, in actual installation, put into from casing 1's the end of opening with the dish 3 of converging and make cooperation protruding 31 insert the cooperation perforation 201 after, with welding equipment from can casing 1's the closed segment insert the cooperation perforation 201 accomplish the welding of the dish 3 of converging with utmost point post 2. This kind of welding mode need not to insert welding equipment from the open end of casing 1, and it is more convenient to operate, and welding quality is better to the assembly yield of cylindrical battery has been promoted, the use reliability of cylindrical battery has been promoted.
It should additionally be noted that, because be equipped with the cooperation on utmost point post 2 and perforate 201 and converge and be equipped with on the dish 3 and cooperate the protruding 31 of cooperation of perforating 201, in actual installation, can weld the dish 3 that converges on utmost point post 2 earlier, then carry out the assembly of electric core, also can weld the dish 3 that converges on electric core earlier, then will have the dish 3 that converges of electric core to weld on utmost point post 2 again. The two assembling methods can be selected according to the size of the battery core, so that the problem that the pole 3 at the bottom of the cylindrical battery cannot be connected with the large section of the winding core is solved well.
In some embodiments, mating bore 201 includes a diverging section 2011, a transition section 2012, and a mating section 2013, mating section 2013 mates with mating protrusion 31, the maximum diameter of diverging section 2011 is greater than the diameter of transition section 2012, and the diameter of transition section 2012 is greater than the diameter of mating section 2013. It can be appreciated that if the diameters of the transition section 2012 and the mating section 2013 are the same, then a weld is formed on the inner circumferential wall of the mating penetration 201 during welding, and such weld is relatively difficult to weld. In this embodiment, the diameter of the transition section 2012 is greater than the diameter of the fitting section 2013, and the weld is formed in the axial direction of the fitting through hole 201 during the welding process, so that the welding difficulty of such weld is relatively low, thereby further improving the assembly yield of the cylindrical battery and improving the use reliability of the cylindrical battery. In addition, the gradually expanding section 2011 facilitates the insertion of welding equipment into the matching through hole 201, so that the phenomenon that the welding equipment scratches and scratches the inner wall of the matching through hole 201 is avoided.
It should be additionally noted that the cross-sectional shape of the fitting through hole 201 may also be an ellipse, a polygon or other irregular shape according to actual needs, and is not limited to the circular shape of the embodiment. The shape of the fitting hole 201 may be selected according to actual needs, and is not limited to the three-stage structure of the diverging section 2011, the transition section 2012, and the fitting section 2013.
In some embodiments, the pole 2 includes a body 21 and a stop portion 22 connected to one end of the body 21, the body 21 is disposed on the housing 1, and the stop portion 22 stops on the confluence disc 3. It is understood that the abutting portion 22 can increase the contact area of the bus bar 3 and the pole post 2, thereby indirectly increasing the connection stability of the bus bar 3 and the pole post 2.
In some embodiments, the cylindrical battery includes an insulating structure 4, the insulating structure 4 is disposed on the body 21, and one side of the insulating structure 4 abuts against the abutting portion 22. It can be understood that the insulating structure 4 can ensure the insulating property of the pole 2 and the housing 1, avoid the occurrence of the phenomenon that the housing 1 is electrified, and improve the use safety of the cylindrical battery.
It should be additionally noted that, in the present embodiment, the specific type and material of the insulating structure 4 may be selected according to actual needs, and the insulating structure 4 is not specifically limited herein.
In some more specific embodiments, the pole 2 further comprises a turned-up portion 23 connected to the other end of the body 21, the turned-up portion 23 resting on the other side of the insulating structure 4. It can be understood that the insulating structure 4 is sandwiched between the flanging portion 23 and the stopping portion 22, so that on one hand, the insulation between the pole 2 and the housing 1 is ensured, and on the other hand, the installation stability between the insulating structure 4 and the pole 2 is ensured, thereby improving the reliability of the cylindrical battery.
In some embodiments, the mating height of the mating protrusion 31 and the mating through hole 201 is H, which satisfies the relation: h is more than or equal to 0.3 mm. It can be understood that, the cooperation arch 31 and the cooperation of the perforation 201 highly undersize can reduce welding strength, and in this embodiment, the cooperation arch 31 and the cooperation of the perforation 201 highly be greater than 0.3mm, have ensured the area of contact of cooperation arch 31 and cooperation perforation 201, have promoted utmost point post 2 and have converged the welding strength of dish 3 to cylindrical battery's reliability has been promoted.
In some embodiments, the cylindrical battery further comprises an insulating support 5, the insulating support 5 being disposed within the housing 1 and sandwiched between the bus bar 3 and the closed section of the housing 1. It can be understood that the insulating support member 5 that adds can promote the installation stability of the dish 3 that converges on the one hand, and on the other hand can ensure to converge between dish 3 and the casing 1 insulating, has avoided the electrified phenomenon of casing 1.
In some specific embodiments, the insulating support 5 has an escape perforation 51, and the pole 2 is fitted in the escape perforation 51. It is understood that the insulating support 5 is formed in a ring shape to increase a contact area of the insulating support 5 and the bus bar 3, thereby ensuring connection stability of the bus bar 3 and insulation of the bus bar 3 from the case 1.
In some specific embodiments, the insulating support 5 has a support flange on which the bus bar 3 is supported. It can be understood that the support flange can support the bus bar tray 3 well, thereby ensuring the connection stability of the bus bar tray 3 and the insulation of the bus bar tray 3 from the housing 1.
In some embodiments, the confluence plate 3 is a sheet metal part, and the fitting protrusions 31 are stamping protrusions. Thereby, the manufacturing cost of the bus bar tray 3 is reduced, thereby reducing the manufacturing cost of the entire cylindrical battery.
Example (b):
the specific structure of the cylindrical battery according to one embodiment of the present invention will be described below with reference to fig. 1 to 2.
As shown in fig. 1-2, the cylindrical battery of the present embodiment includes a case 1, a pole post 2, a bus bar 3, an insulating structure 4, and an insulating support 5, the case 1 having a closed end. The current collecting plate 3 is arranged in the shell 1, and a matching bulge 31 is arranged on the current collecting plate 3. Utmost point post 2 wears to establish on the closed end of casing 1, and is equipped with the cooperation on utmost point post 2 and perforates 201, and cooperation perforation 201 includes divergent section 2011, changeover portion 2012 and cooperation section 2013, and cooperation section 2013 cooperates with cooperation arch 31, and the maximum diameter of divergent section 2011 is greater than the diameter of changeover portion 2012, and the diameter of changeover portion 2012 is greater than the diameter of cooperation section 2013. The pole 2 comprises a body 21, a stopping part 22 connected to one end of the body 21 and a flanging part 23 connected to the other end of the body 21, the body 21 is arranged on the shell 1 in a penetrating mode, and the stopping part 22 stops against the confluence disc 3. The insulating structure 4 is sleeved on the body 21, one side of the insulating structure 4 abuts against the abutting portion 22, the other side of the insulating structure 4 abuts against the flanging portion 23, and the insulating support member 5 is arranged in the casing 1 and clamped between the junction tray 3 and the closed section of the casing 1.
The cylindrical battery of the embodiment has the following advantages:
firstly, the method comprises the following steps: because the pole 2 is provided with the matching through hole 201 and the confluence disc 3 is provided with the matching protrusion 31 with the matching through hole 201, welding equipment does not need to be inserted from the open end of the shell 1 in the assembling process, the operation is more convenient, the welding quality is better, the assembly yield of the cylindrical battery is improved, and the use reliability of the cylindrical battery is improved;
secondly, the method comprises the following steps: the insulating support piece 5 that adds can promote the installation stability of the dish 3 that converges, and can ensure to converge and insulate between dish 3 and the casing 1, has avoided the electrified phenomenon of casing 1.
In the description herein, references to the description of "some embodiments," "other embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.
Claims (10)
1. A cylindrical battery, comprising:
a housing (1), said housing (1) having a closed end;
the pole (2) penetrates through the closed end of the shell (1), and a matching through hole (201) is formed in the pole (2);
converge set (3), it establishes to converge set (3) in casing (1), converge set (3) on be equipped with cooperation arch (31) of perforation (201) cooperate, cooperate protruding (31) the outer peripheral face with cooperate the inner peripheral surface welded connection who perforates (201).
2. The cylindrical battery according to claim 1, wherein the fitting penetration (201) comprises a diverging section (2011), a transition section (2012) and a fitting section (2013), the fitting section (2013) is fitted with the fitting protrusion (31), the maximum diameter of the diverging section (2011) is larger than the diameter of the transition section (2012), and the diameter of the transition section (2012) is larger than the diameter of the fitting section (2013).
3. The cylindrical battery according to claim 1, wherein the pole (2) comprises a body (21) and a stop portion (22) connected to one end of the body (21), the body (21) is arranged on the housing (1) in a penetrating manner, and the stop portion (22) is stopped on the confluence disc (3).
4. The cylindrical battery as claimed in claim 3, wherein the cylindrical battery comprises an insulating structure (4), the insulating structure (4) is sleeved on the body (21), and one side of the insulating structure (4) abuts against the abutting part (22).
5. Cylindrical battery according to claim 4, characterized in that the pole (2) further comprises a flanging (23) connected to the other end of the body (21), the flanging (23) resting on the other side of the insulating structure (4).
6. The cylindrical battery according to any one of claims 1 to 5, wherein the fitting height of the fitting projection (31) and the fitting penetration hole (201) is H, which satisfies the relation: h is more than or equal to 0.3 mm.
7. Cylindrical battery according to any of claims 1-5, characterized in that it further comprises an insulating support (5), said insulating support (5) being provided inside the casing (1) and being sandwiched between the confluence disc (3) and the closed section of the casing (1).
8. Cylindrical battery according to claim 7, characterized in that the insulating support (5) has an escape perforation (51), the pole (2) fitting within the escape perforation (51).
9. Cylindrical battery according to claim 7, characterized in that the insulating support (5) has a support flange on which the collector tray (3) is supported.
10. Cylindrical battery according to any of claims 1 to 5, characterized in that the confluence disc (3) is a sheet metal part and the mating protrusions (31) are stamped protrusions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110749684.5A CN113363674A (en) | 2021-07-02 | 2021-07-02 | Cylindrical battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110749684.5A CN113363674A (en) | 2021-07-02 | 2021-07-02 | Cylindrical battery |
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| Publication Number | Publication Date |
|---|---|
| CN113363674A true CN113363674A (en) | 2021-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110749684.5A Pending CN113363674A (en) | 2021-07-02 | 2021-07-02 | Cylindrical battery |
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| CN (1) | CN113363674A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114628866A (en) * | 2022-03-28 | 2022-06-14 | 蓝京新能源(嘉兴)有限公司 | High-energy-density cylindrical battery and assembly process thereof |
| CN114824674A (en) * | 2022-03-28 | 2022-07-29 | 蓝京新能源(嘉兴)有限公司 | Cylindrical battery with high volume utilization rate and assembly process thereof |
| CN115347287A (en) * | 2022-09-02 | 2022-11-15 | 宁夏宝丰昱能科技有限公司 | Battery top cover, battery and battery manufacturing method |
| WO2024066234A1 (en) * | 2022-09-29 | 2024-04-04 | 蓝京新能源(嘉兴)有限公司 | Cylindrical battery and assembly process therefor |
-
2021
- 2021-07-02 CN CN202110749684.5A patent/CN113363674A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114628866A (en) * | 2022-03-28 | 2022-06-14 | 蓝京新能源(嘉兴)有限公司 | High-energy-density cylindrical battery and assembly process thereof |
| CN114824674A (en) * | 2022-03-28 | 2022-07-29 | 蓝京新能源(嘉兴)有限公司 | Cylindrical battery with high volume utilization rate and assembly process thereof |
| WO2023185501A1 (en) * | 2022-03-28 | 2023-10-05 | 蓝京新能源(嘉兴)有限公司 | High-energy-density cylindrical battery and assembly process therefor |
| CN115347287A (en) * | 2022-09-02 | 2022-11-15 | 宁夏宝丰昱能科技有限公司 | Battery top cover, battery and battery manufacturing method |
| CN115347287B (en) * | 2022-09-02 | 2023-11-10 | 宁夏宝丰昱能科技有限公司 | Battery top cover, battery and battery manufacturing method |
| WO2024066234A1 (en) * | 2022-09-29 | 2024-04-04 | 蓝京新能源(嘉兴)有限公司 | Cylindrical battery and assembly process therefor |
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