CN115275465A - Novel sealing structure and sealing method of cylindrical battery - Google Patents
Novel sealing structure and sealing method of cylindrical battery Download PDFInfo
- Publication number
- CN115275465A CN115275465A CN202211002095.1A CN202211002095A CN115275465A CN 115275465 A CN115275465 A CN 115275465A CN 202211002095 A CN202211002095 A CN 202211002095A CN 115275465 A CN115275465 A CN 115275465A
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- cylindrical battery
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- current collector
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- 238000007789 sealing Methods 0.000 title claims abstract description 83
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000003466 welding Methods 0.000 claims description 24
- 238000003825 pressing Methods 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 238000005245 sintering Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000007731 hot pressing Methods 0.000 claims 1
- 239000003792 electrolyte Substances 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 13
- 238000010586 diagram Methods 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 3
- 239000005060 rubber Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000005253 cladding Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000004813 Perfluoroalkoxy alkane Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229920005557 bromobutyl Polymers 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 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
- H01M50/147—Lids or covers
- H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
- H01M50/167—Lids or covers characterised by the methods of assembling casings with lids by crimping
-
- 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
- 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
- H01M50/30—Arrangements for facilitating escape of gases
-
- 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)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention discloses a novel sealing structure of a cylindrical battery and a sealing method thereof, wherein the sealing structure comprises a battery body, the battery body comprises a shell, a cylindrical battery core is arranged in the shell, a negative current collecting piece and a positive current collecting piece are sequentially arranged at the top end and the bottom end of the shell, the negative current collecting piece and the positive current collecting piece are electrically connected with the cylindrical battery core, and a negative cap is arranged on the negative current collecting piece. The cylindrical battery sealing structure has the advantages of simple structure and strong practicability, the number of components involved in the sealing structure of the cylindrical battery is small, the cylindrical battery sealing structure can be assembled and sealed at high speed, the problems of poor battery sealing performance, low safety in the using process, low battery space utilization rate and the like are solved, the leakage of electrolyte is effectively prevented, the battery capacity is improved, the using safety is improved, and the service life is prolonged. And greatly reduces the manufacturing cost.
Description
Technical Field
The invention relates to the technical field of cylindrical batteries in new energy industry, in particular to a novel sealing structure of a cylindrical battery and a sealing method thereof.
Background
The cylindrical lithium battery has the advantages of high capacity, high output voltage, good charge-discharge cycle performance, stable output voltage, capability of discharging with large current, stable electrochemical performance, safety in use, wide working temperature range, environmental friendliness and the like, thereby being increasingly widely applied. And in order to ensure the safe use, the sealing is needed.
The existing cylindrical battery has different sealing modes according to different types of batteries, and the existing sealing structure has problems:
1. the structure is complex, the number of components is large, the assembly steps are multiple and messy, and the production efficiency is low;
2. the electric core can not be limited, and the electric core is rocked to cause later stage welding precision to have errors, insufficient soldering and the like.
Disclosure of Invention
The invention aims to provide a novel sealing structure of a cylindrical battery and a sealing method thereof, which well solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a novel sealing structure of cylinder battery, includes the battery body, and the battery body includes the casing, and the inside cylinder electricity core that is equipped with of casing to the top and the bottom of casing are equipped with negative pole current collector and anodal current collector in proper order, and negative pole current collector and anodal current collector all with cylinder electricity core electric connection, and be equipped with the negative pole cap on the negative pole current collector, the negative pole cap with form sealed turn-up between the casing.
Preferably, in order to improve the safety during use and timely discharge the internal gas when safety problems occur, the safety of the battery is ensured, and the cathode cap cover is provided with explosion-proof holes at equal intervals.
Preferably, in order to improve the quality and the use safety of the battery, the shell is made of one of a steel shell and an aluminum alloy.
According to another aspect of the present invention, there is provided a sealing method for a sealing structure of a novel cylindrical battery, including the steps of:
step S101: and welding the cylindrical battery cell, the positive current collector and the negative current collector and then loading the welded cylindrical battery cell, the positive current collector and the negative current collector into the shell.
Step S102: and at the moment, necking the end, close to the negative current collector, of the shell to limit the battery cell.
Step S103: and positioning and mounting the shell and the cathode cap after necking.
Step S104: and welding the positioned cathode cap with the cathode current collecting piece to form connection.
Step S105: the negative pole cap and the shell are sealed, a complete sealing structure is finally formed, the sealing performance is guaranteed, and the shell is tightly connected with the negative pole cap to guarantee current conduction.
Step S106: and then, the negative cap and the negative current collector are hermetically connected, and finally, the sealing structure of the novel cylindrical battery can be obtained.
Preferably, in order to better match with the cap, and further ensure the sealing performance and the conductivity, the diameter of the shell after the necking is smaller than that of the normal shell, and the length of the necking is 7-10mm.
Preferably, in order to better perform sealing connection, and meanwhile, a welding mode is not needed, so that the cost is reduced, one end of the shell close to the negative electrode cap is designed to be a concave-convex structure, the concave-convex structure and the negative electrode cap are matched, assembled and sealed through the concave-convex structure, and the sealing connection mode can be mechanical pressing.
Preferably, the connection mode in S104 may be one of laser welding, thermocompression bonding, resistance welding, ultrasonic welding, and high-temperature sintering.
Compared with the prior art, the invention has the beneficial effects that:
(1) Through simple sealing of the battery, the sealing can be realized by adopting fewer components, the assembly can be fast carried out, the production efficiency can be greatly improved, meanwhile, the sealing performance in practical use can be ensured, the leakage of electrolyte is avoided, the use safety is improved, the stability of a motor in practical use can also be ensured, the problem of error and insufficient welding of precision in processing and welding caused by the phenomenon of displacement in the processing process is avoided, the processing quality is ensured, meanwhile, the utilization rate of the internal space of the battery can be greatly improved, and further, the capacity of the battery is improved;
(2) The cathode cap and the shell are pressed and sealed in a mechanical mode, good contact between the cap and the shell can be guaranteed without adopting a traditional welding mode, and normal conductive use can be further guaranteed;
(3) And through seting up the explosion-proof hole that has, can be when the battery safety problem appears because of the special circumstances, the battery is inside can produce a large amount of gases, leads to battery internal pressure to increase, and the explosion-proof hole can be broken through rapidly to the inside gas of battery, can discharge the inside gas of battery rapidly, avoids the battery to gather because of inside gas and forms high pressure and produce out of control, guarantees battery safety.
Drawings
Fig. 1 is a cross-sectional view of a sealing structure of a novel cylindrical battery according to the present invention;
fig. 2 is a schematic structural diagram of a casing in a sealing structure of a novel cylindrical battery according to the present invention;
fig. 3 is a schematic view of a part of the structure of the sealing structure of a novel cylindrical battery according to the present invention;
fig. 4 is a schematic structural diagram of a negative electrode cap in a sealing structure of a novel cylindrical battery according to the present invention;
fig. 5 is a second schematic structural diagram of a negative electrode cap in the sealing structure of a novel cylindrical battery according to the present invention;
fig. 6 is a third schematic structural view of a negative cap in the sealing structure of a novel cylindrical battery according to the present invention;
FIG. 7 is a fourth schematic view of the structure of the negative cap in the sealing structure of the novel cylindrical battery according to the present invention;
fig. 8 is a fifth schematic view of a structure of a negative electrode cap in the sealing structure of a novel cylindrical battery according to the present invention;
fig. 9 is a schematic structural diagram of a welding position in a sealing structure of a novel cylindrical battery according to the present invention;
fig. 10 is a schematic structural diagram of a welding position in a sealing structure of a novel cylindrical battery according to the present invention;
fig. 11 is a second cross-sectional view of the sealing structure of the novel cylindrical battery according to the present invention;
fig. 12 is one of the schematic structural diagrams of a sealing structure and a cladding layer in the sealing structure of a novel cylindrical battery according to the present invention;
fig. 13 is a second schematic structural diagram of a sealing structure and a cladding layer in the sealing structure of a novel cylindrical battery according to the present invention;
fig. 14 is a partial sectional view of a sealing structure of a novel cylindrical battery according to the present invention;
fig. 15 is a flowchart of a sealing method in a sealing structure of a novel cylindrical battery according to the present invention;
fig. 16 is a second flowchart of a sealing method in the sealing structure of the novel cylindrical battery according to the present invention.
In the figure: 1. a battery body; 2. a housing; 3. a negative current collector; 4. a cylindrical cell; 5. a positive electrode current collector; 6. a negative electrode cap; 102. an explosion-proof hole; 201. a sealing structure; 301. and (4) coating.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1-3, an embodiment of the present invention is shown: the utility model provides a novel sealing structure of cylinder battery, includes battery body 1, battery body 1 includes casing 2, 2 inside cylinder electricity cores 4 that are equipped with of casing, and 2's top and bottom of casing are equipped with negative pole current collector 3 and anodal current collector 5 in proper order, and negative pole current collector 3 and anodal current collector 5 all with 4 electric connection of cylinder electricity core, and be equipped with negative pole cap 6 on the negative pole current collector 3, negative pole cap 6 with form sealed turn-up between the casing 2, explosion-proof hole 102 has been seted up to equidistance on the negative pole cap 6, the material of casing 2 is one of steel casing or aluminum alloy.
The explosion-proof hole 102 may be a position shown in fig. 1 or fig. 4, when a safety problem occurs in the battery due to a special condition, a large amount of gas is generated inside the battery, so that the internal pressure of the battery is increased, the gas inside the battery can rapidly burst through the explosion-proof hole, the gas inside the battery can be rapidly exhausted, the battery is prevented from generating runaway due to high pressure generated by accumulation of the gas inside the battery, and the safety of the battery is ensured.
According to another aspect of the present invention, there is provided a sealing method for a sealing structure of a novel cylindrical battery, including the steps of:
step S101: and welding the cylindrical battery cell 4, the positive current collector 5 and the negative current collector 3, and then filling the welded cylindrical battery cell, the positive current collector and the negative current collector into the shell 2.
Step S102: at this time, the end of the casing 2 close to the negative current collector 3 is subjected to necking processing, and the electric core is limited.
Step S103: and positioning and mounting the reduced shell 2 and the cathode cap 6.
Step S104: and welding the positioned cathode cap 6 and the cathode current collecting sheet 3 to form connection.
Step S105: the negative electrode cap 6 and the shell 2 are sealed, a complete sealing structure is finally formed, the sealing performance is guaranteed, and the shell 2 and the negative electrode cap 6 are tightly connected to guarantee current conduction.
Step S106: and then the negative cap 6 is hermetically connected with the negative current collector 3, and finally the sealing structure of the novel cylindrical battery can be obtained.
Wherein, the diameter (dl) of casing 2 is less than diameter (d) of normal casing behind the throat to the length of throat (L) is 7-10mm, can effectually let both cooperate, prevents that the cap from removing, guarantees that the later stage seals and need not to carry out the secondary positioning to the cap.
Wherein, casing 2 is close to the one end of negative pole cap 6 is designed into the concave-convex structure, and both cooperate the equipment through concave-convex structure and seal, and wherein sealing connection's mode can be for mechanical pressfitting, compares in laser welding sealed, and mechanical seal is high-efficient, quick, and production efficiency is higher, advantage such as with low costs.
The connection mode in S104 may be one of laser welding, thermocompression bonding, resistance welding, ultrasonic welding, and high-temperature sintering.
Example 2
For the negative electrode cap 6, the shape can be any one of fig. 4 to fig. 8, the negative electrode cap 6 is designed with various concave-convex structures matched with each other, and the negative electrode cap 6 and the shell 2 are pressed and sealed in a mechanical manner.
Particularly for fig. 5, the negative cap 6 is designed to have a U-shaped structure, which can be quickly fitted to the housing and positioned to prevent the cap from moving.
Where fig. 5 is the shape before pressing and fig. 9 is the shape sealed by means of mechanical pressing.
In fig. 7, the negative cap 6 is designed to have an L-shaped structure, and can be quickly fitted to the housing 2, and positioned to prevent the cap from moving, fig. 7 is a shape before press-fitting, and fig. 10 is a shape formed by sealing in a manner after mechanical press-fitting.
While a in fig. 9 is a position where anode cap 6 is welded to anode current collector 3, where the welded position may be included at one or both of the two ends or the middle, and a in fig. 10 is a position where anode cap 6 is welded to anode current collector 3, which may improve the sealing property of the connection between the two.
Example 3
For the sealing method, a sealing method of a sealing structure of a novel cylindrical battery is also provided, and comprises the following steps:
step S201: and welding the cylindrical battery cell 4, the positive current collector 5 and the negative current collector 3, and then filling the welded cylindrical battery cell, the positive current collector and the negative current collector into the shell 2.
Step S202: the housing 2 and the negative cap 6 are mutually matched and positioned.
Step S203: negative cap 6 and negative current collector 3 are welded to form a connection.
Step S204: the cooperation coating 301 seals negative pole cap 6 and casing 2, finally forms complete seal structure, guarantees the leakproofness to casing 2 and negative pole cap 6 zonulae occludens guarantee that the electric current switches on.
Step S205: and then, the negative electrode cap 6 is hermetically connected with the negative current collector 3, and finally, the sealing structure of the novel cylindrical battery can be obtained.
The coating is connected to the annular step of the negative electrode cap 6, so that the connection strength and the sealing performance of the cap and the shell 2 can be effectively improved, and electrolyte is effectively prevented from flowing out, on the other hand, the coating 301 can be made of an insulating material, so that the strength of the cap is effectively improved, wherein the coating 301 comprises at least one of polypropylene rubber, fluororubber, chloroprene rubber, brominated butyl rubber, polyethylene, polyester compounds, electrolyte oxidation-resistant rubber, ethylene propylene rubber, butyl rubber, curing rubber, PFA, ceramic, glass, styrene butadiene rubber and carbon fiber.
For the negative electrode cap 6, referring to fig. 11-14, any one of the figures can be used, the cap can be prevented from moving in order to form effective matching connection, and the safety in use at the later stage is ensured, and the negative electrode cap 6 is also provided with the explosion-proof hole 102, so that when the battery has a safety problem due to a special condition, a large amount of gas can be generated inside the battery, the internal pressure of the battery is increased, the gas inside the battery can rapidly burst the explosion-proof hole, the gas inside the battery can be rapidly discharged, the battery is prevented from being out of control due to the high pressure generated by the accumulation of the gas inside the battery, and the safety of the battery is ensured.
In summary, the cylindrical battery has a simple structure and strong practicability, the cylindrical battery has the function of storing electric energy, acquires electric quantity in a charging mode, provides electric quantity for an object in a discharging mode according to application requirements, can be rapidly charged and discharged in a short time, and has the advantages of high charging efficiency, large output power and the like, wherein fewer components are involved in the sealing structure of the novel cylindrical battery, the novel cylindrical battery can be assembled and sealed at a high speed, the problems of poor battery sealing performance, low safety in the using process, low battery space utilization rate and the like are solved, the electrolyte leakage is effectively prevented, the battery capacity is improved, the use safety is improved, and the service life is prolonged. And greatly reduces the manufacturing cost.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (7)
1. The utility model provides a novel seal structure of cylinder battery, includes battery body (1), its characterized in that: the battery body (1) comprises a shell (2), a cylindrical battery core (4) is arranged inside the shell (2), a negative current collector (3) and an anode current collector (5) are sequentially arranged at the top end and the bottom end of the shell (2), the negative current collector (3) and the anode current collector (5) are both electrically connected with the cylindrical battery core (4), a negative cap cover (6) is arranged on the negative current collector (3), and a sealing turned edge is formed between the negative cap cover (6) and the shell (2).
2. The sealing structure of a novel cylindrical battery as claimed in claim 1, wherein: explosion-proof holes (102) are formed in the negative pole cap cover (6) at equal intervals.
3. The sealing structure of a novel cylindrical battery as claimed in claim 2, wherein: the shell (2) is one of a steel shell or an aluminum alloy shell.
4. A sealing method of a novel cylindrical battery sealing structure, which is used for processing the novel cylindrical battery sealing structure of any one of claims 1-3, and comprises the following steps:
step S101: welding the cylindrical battery cell (4), the positive current collector (5) and the negative current collector (3) and then filling the welded cylindrical battery cell, the positive current collector and the negative current collector into the shell (2);
step S102: at the moment, necking is carried out on one end, close to the negative current collector (3), of the shell (2), and the electric core is limited;
step S103: positioning and mounting the shell (2) and the cathode cap (6) after necking;
step S104: welding the positioned negative cap (6) and the negative current collector (3) to form connection;
step S105: the negative cap (6) and the shell (2) are sealed to finally form a complete sealing structure, so that the sealing performance is ensured, and the shell (2) and the negative cap (6) are tightly connected to ensure the current conduction;
step S106: and then the negative pole cap cover (6) is hermetically connected with the negative pole current collecting piece (3), and finally the sealing structure of the novel cylindrical battery can be obtained.
5. A sealing method of a novel sealing structure of a cylindrical battery according to claim 4, wherein: the diameter of the shell (2) after necking is smaller than that of a normal shell, and the length of the necking is 7-10mm.
6. A sealing method of a novel cylindrical battery sealing structure according to claim 4, wherein: one end of the shell (2) close to the negative pole cap (6) is designed into a concave-convex structure, the concave-convex structure and the shell are matched, assembled and sealed through the concave-convex structure, and the sealing connection mode is mechanical pressing.
7. A sealing method of a novel cylindrical battery sealing structure according to claim 4, wherein: and the connection mode in S104 is one of laser welding, hot pressing, resistance welding, ultrasonic welding and high-temperature sintering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211002095.1A CN115275465A (en) | 2022-08-20 | 2022-08-20 | Novel sealing structure and sealing method of cylindrical battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211002095.1A CN115275465A (en) | 2022-08-20 | 2022-08-20 | Novel sealing structure and sealing method of cylindrical battery |
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| CN115275465A true CN115275465A (en) | 2022-11-01 |
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| CN202211002095.1A Pending CN115275465A (en) | 2022-08-20 | 2022-08-20 | Novel sealing structure and sealing method of cylindrical battery |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113555602A (en) * | 2021-08-19 | 2021-10-26 | 多氟多新能源科技有限公司 | Novel cylindrical lithium ion battery and manufacturing method thereof |
| CN114300734A (en) * | 2022-01-08 | 2022-04-08 | 江苏耐驰新能源科技有限公司 | Cylindrical lithium battery structure and manufacturing method thereof |
| CN216389535U (en) * | 2021-11-08 | 2022-04-26 | 多氟多新能源科技有限公司 | Cylindrical lithium ion battery and battery module thereof |
| CN114628794A (en) * | 2022-03-28 | 2022-06-14 | 蓝京新能源(嘉兴)有限公司 | Cylindrical battery and manufacturing process thereof |
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2022
- 2022-08-20 CN CN202211002095.1A patent/CN115275465A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113555602A (en) * | 2021-08-19 | 2021-10-26 | 多氟多新能源科技有限公司 | Novel cylindrical lithium ion battery and manufacturing method thereof |
| CN216389535U (en) * | 2021-11-08 | 2022-04-26 | 多氟多新能源科技有限公司 | Cylindrical lithium ion battery and battery module thereof |
| CN114300734A (en) * | 2022-01-08 | 2022-04-08 | 江苏耐驰新能源科技有限公司 | Cylindrical lithium battery structure and manufacturing method thereof |
| CN114628794A (en) * | 2022-03-28 | 2022-06-14 | 蓝京新能源(嘉兴)有限公司 | Cylindrical battery and manufacturing process thereof |
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