CN114597504A - Safety assembly of low-internal-resistance cylindrical lithium battery without electrode lugs - Google Patents
Safety assembly of low-internal-resistance cylindrical lithium battery without electrode lugs Download PDFInfo
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- CN114597504A CN114597504A CN202210105175.3A CN202210105175A CN114597504A CN 114597504 A CN114597504 A CN 114597504A CN 202210105175 A CN202210105175 A CN 202210105175A CN 114597504 A CN114597504 A CN 114597504A
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- 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
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- 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
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- 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
- H01M50/342—Non-re-sealable arrangements
- H01M50/3425—Non-re-sealable arrangements in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member
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- 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
- H01M50/533—Electrode connections inside a battery casing characterised by the shape of the leads or tabs
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- 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
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- 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
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- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention discloses a safety assembly of a low-internal-resistance non-polar-lug cylindrical lithium battery, which is characterized by comprising a steel shell for storing a battery cell assembly, an anode current collecting disc, a cathode current collecting disc and an explosion-proof sheet, wherein the anode current collecting disc is arranged at the bottom of the steel shell and is provided with a welded cathode lead, the cathode current collecting disc is positioned at the upper end of the steel shell and is used for welding the cathode lead led to the position near the top of the steel shell, and the explosion-proof sheet is positioned on the cathode current collecting disc and is used for explosion prevention; and a middle hole for injecting electrolyte is formed in the middle area of the anode current collecting disc. The rubbed tabs are welded on the positive current collecting disc and the negative current collecting disc, and the explosion-proof sheets are used for sealing, so that the distance of the connected lead wires is reduced by the positive electrode and the negative electrode, and the internal resistance is overcome; meanwhile, compared with the prior lithium battery structure, the lithium battery has fewer safety components, reduces the welding process of the safety components, and can realize automatic industrial production in the assembling process.
Description
Technical Field
The invention relates to the field of lithium batteries, in particular to a safety assembly of a low-internal-resistance electrodeless-ear cylindrical lithium battery.
Background
According to the packaging form, the lithium battery is mainly divided into three forms: square, soft and cylindrical.
The cylindrical lithium battery can be divided into different types such as lithium iron phosphate, lithium cobaltate, lithium manganate, cobalt-manganese mixture, ternary materials and the like according to different anode materials. At present, the cylinder mainly takes a steel shell cylindrical lithium iron phosphate battery as a main part, and the battery has the characteristics of high capacity, high output voltage, good charge-discharge cycle performance, stable output voltage, capability of heavy current discharge, stable electrochemical performance, safe use, wide working temperature range and environmental friendliness. The energy-saving lamp is widely applied to solar lamps, lawn lamps, backup energy sources, electric tools and toy models.
The structure of a typical cylindrical battery includes: positive electrode cover, safety valve, PTC element, current cut-off mechanism, gasket, positive electrode, negative electrode, barrier film, casing. The earliest cylindrical lithium battery was the 18650 lithium battery invented by the son y corporation of japan in 1992, and since the history of the 18650 cylindrical lithium battery is quite long, the market popularity rate is very high, and the cylindrical lithium battery adopts a rather mature winding process, and has high automation degree, stable product quality and relatively low cost. There are many types of cylindrical lithium batteries, and 18650, 21700 and the like are dynamic cylindrical lithium batteries.
The square lithium battery is generally an aluminum-shell or steel-shell square battery, the popularization rate of the square battery is high at home, along with the rise of automobile power batteries in recent years, the contradiction between the automobile endurance mileage and the battery capacity is increasingly remarkable, and most of domestic power battery manufacturers mainly adopt the aluminum-shell square battery with higher battery energy density, because the square battery has a simpler structure, unlike a cylindrical battery which adopts stainless steel with higher strength as a shell, accessories with an explosion-proof safety valve and the like, the whole accessory has light weight and higher relative energy density. The square battery adopts two different processes of winding and laminating.
However, since the square lithium battery can be produced in a customized manner according to the size of the product, thousands of models exist in the market, and the process is difficult to unify due to too many models. The square battery is used on common electronic products without problems, but for industrial equipment products needing a plurality of series and parallel connections, a cylindrical lithium battery produced in a standardized mode is preferably used, so that the production process is guaranteed, and a replaceable battery is easier to find later.
The soft package lithium battery is a liquid lithium battery which is sleeved with a polymer shell, and the biggest difference between the soft package lithium battery and other batteries is a soft package material (aluminum-plastic composite film), which is the most key material and the highest technical difficulty material in the soft package lithium battery. The flexible packaging material is generally divided into three layers, namely an outer barrier layer (generally an outer protective layer made of nylon BOPA or PET), a barrier layer (middle layer aluminum foil) and an inner layer (multifunctional high barrier layer).
The packaging material and the structure of the soft package battery enable the soft package battery to have the following advantages: 1) the soft-package battery with good safety performance is structurally packaged by an aluminum-plastic film, and the soft-package battery can blow and crack at most under the condition of potential safety hazard, and does not explode like a steel shell aluminum shell battery core. 2) The weight of the soft package battery is 40% lighter than that of a steel shell lithium battery with the same capacity, and is 20% lighter than that of an aluminum shell battery. 3) The capacity of the soft package battery is large, and the capacity of the soft package battery is 10-15% higher than that of a steel shell battery with the same specification and size and is 5-10% higher than that of an aluminum shell battery. 4) The internal resistance is small, the internal resistance of the soft package battery is small, the minimum internal resistance of the current domestic soft package battery core can be below 35m omega, and the self-power consumption of the battery is greatly reduced. 5) The design is flexible, and the shape of the soft package battery can be customized according to the requirements of customers, so that a new battery cell model is developed.
In summary, in terms of battery shape: the square lithium battery can be any size, so that the square lithium battery is incomparable with a cylindrical battery; in the aspect of rate characteristics, the process of welding multiple tabs by a cylindrical lithium battery is limited, so the rate characteristics are slightly inferior to the scheme of square multiple tabs; in the aspect of a discharging platform, the same anode material, cathode material and electrolyte are adopted, so that the discharging platform is theoretically consistent, but the internal resistance of the square battery is slightly dominant, so that the discharging platform is slightly higher; in the aspect of product technology, the cylindrical lithium battery technology is mature, the probability of the pole piece common secondary slitting defect is low, and the winding technology is higher than the lamination technology in maturity and automation degree, and a semi-manual mode is adopted in the lamination technology at present, so that the quality of the battery is adversely affected; in the aspect of tab welding, a cylindrical lithium battery tab is easier to weld than a square lithium battery, the square battery is easy to produce insufficient welding to influence the battery quality, but the resistance of the cylindrical lithium battery is far larger than that of the square battery due to the fact that the cylindrical lithium battery is welded from the bottom of a battery core to the top of an upper cover, and when the cylindrical lithium battery is used as a power battery, the charging and discharging time is long; in the aspect of PACK is in groups, circular battery has the characteristics of changing the usefulness relatively, so the PACK scheme is simple, because its face of cylinder contact is gapped, so the radiating effect is good, will solve radiating problem during square battery PACK.
At present, the traditional power cylinder type has larger resistance, and the main forms applied to the aspect of power comprise 18650 and 21700 type batteries, wherein 18 and 21 both represent diameters, 65 and 70 represent heights, the unit is centimeter, the battery capacity is smaller, the required quantity is large when larger power is provided, great difficulty is brought to battery management, seven thousand sections are required to be connected in series on a certain new energy automobile, the battery management system is complex, only one to two companies have the capability of providing a safety management system, the charging time is long, the endurance mileage is short, and the weight ratio and the volume ratio of the whole automobile are larger.
Referring to fig. 1, a new type of high-capacity battery, model 46850, is currently released, which "rubs the end face of the pre-bent electrode assembly to form a flat end face, and then welds the current collecting plate, and the depth of the flat electrode assembly welded to the current collecting plate is consistent. The high-capacity battery has larger performance requirements and structural requirements on the welded safety assembly, so that how to design the safety assembly with high mutual deep welding consistency, reduce the occupation of the safety assembly on the steel shell volume and reduce the internal resistance is an important technical problem facing lithium battery safety assembly enterprises.
Disclosure of Invention
The invention aims to solve the problems and provides a safety component of a low-internal-resistance non-polar lug cylindrical lithium battery, which well solves the welding problem and the safety problem of a large-size cylindrical battery and solves the technical problem of high internal resistance.
In order to achieve the purpose, the invention adopts the following technical scheme:
a safety assembly of a low-internal-resistance ear-free cylindrical lithium battery comprises a steel shell for storing a battery cell assembly, an anode current collecting disc, a cathode current collecting disc and an explosion-proof sheet, wherein the bottom of the steel shell is provided with a welded anode tab, the cathode current collecting disc is positioned at the upper end of the steel shell and is used for welding a cathode tab led to the position near the top of the steel shell, and the explosion-proof sheet is positioned on the cathode current collecting disc and is used for explosion prevention; the middle area of the negative current collecting disc is provided with a liquid injection hole for injecting electrolyte, the negative current collecting disc and the positive current collecting disc are provided with a welding part and a hole part, and the welding part is used for welding a tab.
Furthermore, the negative current collecting plate and the positive current collecting plate are provided with welding parts, and the hole parts are arranged at intervals in a staggered mode with the welding parts.
Further, the anode current collecting plate is made of steel, and the cathode current collecting plate is made of aluminum.
Further, a concave-convex surface for preventing reflection of light is provided on the surface of the welding portion.
Furthermore, the bottom of the steel shell is provided with a bottom hole, the bottom hole is sealed by a rivet, and an insulating ring is arranged between the rivet and the bottom hole.
Furthermore, the explosion-proof sheet is provided with an arc-shaped explosion-proof reticle, and a plurality of anti-breaking reinforcing ribs are arranged at proper positions along the outer side of the explosion-proof reticle.
Further, the explosion-proof score line is set to be 270-355 degrees.
Further, the explosion-proof piece is provided with a welding bulge part, and the welding bulge part is welded with the steel shell.
Further, the explosion-proof piece is provided with a sealing ring.
Furthermore, the edge of the negative current collecting plate is provided with a raised edge which is upward used for welding, and a plurality of notches are arranged on the raised edge.
Furthermore, a plurality of arched parts are arranged in the middle area of the anode current collecting disc, and the arched parts are distributed in a staggered mode and used for welding the explosion-proof sheets.
Furthermore, a plurality of sector areas in a plurality of petal shapes are formed among the plurality of arched parts, and a gap is formed between each sector area and one side, facing the edge, of the negative current collecting plate.
The invention has the beneficial effects that:
1. according to the safety component of the low-internal-resistance electrode-free lug cylindrical lithium battery, the rubbed lugs are welded on the positive current collecting disc and the negative current collecting disc and are sealed by the explosion-proof sheet, and the internal resistance is overcome because the distance of the communicated lead wires is reduced by the positive electrode and the negative electrode; meanwhile, compared with the prior lithium battery structure, the lithium battery has fewer safety components, reduces the welding process of the safety components, and can realize automatic industrial production in the assembling process.
2. According to the safety assembly of the low-internal-resistance non-polar-lug cylindrical lithium battery, the liquid injection hole is formed in the negative current collecting disc, so that liquid is injected into the electric core assembly after welding, and the problem of processing safety is solved.
3. Because the block of former lithium cell structure needs explosion-proof piece, top cap, orifice plate isotructure, and only need explosion-proof piece structure in this safety subassembly, the subassembly welding degree of difficulty that has significantly reduced to reduce the volume to the box hat, increased battery capacity space relatively.
4. Because positive and negative current collecting plates are provided with welding parts, welding surfaces are reduced, and hole parts formed among a plurality of welding parts prevent smoke dust in the welding process from falling into an internal area.
Drawings
FIG. 1 is a background of the invention;
fig. 2 is an overall structural view of a safety module for a non-poled cylindrical lithium battery having low internal resistance according to the present invention;
fig. 3 is a schematic view of a negative flow plate of a safety assembly of a low internal resistance electrodeless lithium battery of the present invention;
fig. 4 is a schematic view of a negative flow plate of a safety assembly of a low internal resistance electrodeless lithium battery of the present invention;
fig. 5 is a schematic view of an embodiment of an explosion-proof sheet of a safety assembly of a low internal resistance electrodeless-ear cylindrical lithium battery of the present invention;
fig. 6 is a schematic view of an explosion-proof sheet according to another embodiment of the safety assembly of a low internal resistance electrode-less cylindrical lithium battery of the present invention;
fig. 7 is a schematic view of a steel can of a safety assembly of a low internal resistance electrodeless-ear cylindrical lithium battery of the present invention;
fig. 8 is a schematic view of an anode current collecting plate according to another embodiment of the safety assembly of a low internal resistance electrodeless lithium battery of the present invention.
In the figure: 1-a steel shell; 11-a first insulating pad; 12-a rivet; 13-bottom hole; 14-a second insulating pad; 2-positive pole current collecting disc; 3-negative pole current collecting disc; 30-raised edges; 31-liquid injection hole; 32-a weld; 33-a hole portion; 34-a notch; 35-an arch; 36-sector; 37-clearance; 4-explosion-proof piece; 41-explosion-proof reticle; 42-reinforcing ribs; 43-weld the bump.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
Example 1
In the embodiment, the safety assembly of the low-internal-resistance ear-free cylindrical lithium battery comprises a steel shell 1 for storing a battery cell assembly 01, an anode current collecting disc 2 provided with a welded anode tab 012 and arranged at the bottom of the steel shell 1, a cathode current collecting disc 3 positioned at the upper end of the steel shell 1 and used for welding an anode tab 011 led to the top of the steel shell, and an explosion-proof sheet 4 positioned on the cathode current collecting disc 3 and used for explosion protection; an electrolyte injection hole 31 for injecting electrolyte is formed in the middle region of the anode current collecting disk 3, the anode current collecting disk 3 and the cathode current collecting disk 2 have a welding portion 32 and a hole portion 33, and the welding portion 32 is used for welding a tab. Because the positive and negative current collecting discs are arranged in the safety assembly, and the welding parts 32 and the hole parts 33 are arranged, the welding area is small, the welding process is simplified, the hole parts can realize the evacuation of the internal air pressure, the pressure on the current collecting discs is reduced, and welding smoke dust is prevented from falling.
In the present embodiment, 3 to 5 welding portions 32 are provided on the anode current collecting plate 3 and the cathode current collecting plate 2, the hole portions 33 are alternately spaced from the welding portions 32, and the hole portions 33 may be selectively formed in a plurality of circular holes, elongated holes, irregular holes, or the like, or may be formed by surrounding the welding portions 32. In the present embodiment, the hole portions are designed as elongated kidney-shaped holes, in three groups of 3.
In order to prevent the influence of the laser welding, a concave-convex surface 34 for preventing reflection is provided on the surface of the welding portion 31.
In this embodiment, the bottom of the steel shell 1 is provided with a bottom hole 13, the bottom hole 13 is sealed by a rivet 12, and a first insulating ring 11 is arranged between the rivet 12 and the bottom hole 13.
Specifically, the explosion-proof sheet is provided with an explosion-proof reticle 41, and a plurality of anti-breaking reinforcing ribs 42 are arranged on the outer side of the explosion-proof reticle 41. More specifically, the explosion-proof score line is set to 270 to 355 °.
In another embodiment, the rupture disc is provided with a welding ridge 43, and the welding ridge 43 is welded with the steel shell, so that the rupture disc 4 can directly seal the steel shell 1.
In other embodiments, the explosion-proof piece 4 is provided with a sealing ring.
In the present embodiment, anode current collecting plate 3 is made of a copper material, and cathode current collecting plate 2 is made of an aluminum material.
Example 2
Unlike the embodiment, the edge of anode current collecting plate 3 is designed to be an upwardly raised edge 33, and since this raised edge 33 has a certain tension to steel can 1, it is easy to weld steel can 1 and anode current collecting plate 3 together. More specifically, the raised edge 33 is provided with a plurality of notches 34, which prevent large tension during preassembly and deformation of the anode current collecting plate 3 and the steel shell 1, reduce the influence of surface tension on the steel shell 1, and facilitate welding to form a plane with consistent welding. Further, a plurality of raised portions 35 are provided in the middle of anode current collecting plate 3, and these raised portions 35 are used for welding explosion-proof sheet 4. A plurality of petal-shaped sectors 36 are formed between the plurality of arched portions 35, and a gap 37 is provided between the sector 36 and the edge-facing side of the anode current collecting plate. In this embodiment, the number of the notches 34 is 3-6, the corresponding raised edge 30 is divided into 3-6 by the notches 34, the number of the raised portions 35 is 3-6, and the number of the formed sectors 36 is 3-6.
The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.
Claims (10)
1. A safety assembly of a cylindrical lithium battery with low internal resistance and no polar ears is characterized by comprising a steel shell for storing a battery cell assembly, a positive pole current collecting disc, a negative pole current collecting disc and an explosion-proof piece, wherein the bottom of the steel shell is provided with the positive pole current collecting disc for welding the positive pole polar ears, the negative pole current collecting disc is positioned at the upper end of the steel shell and is used for welding the negative pole polar ears led to the top of the steel shell, and the explosion-proof piece is positioned on the negative pole current collecting disc and is used for explosion protection; the middle area of the negative current collecting disc is provided with a liquid injection hole for injecting electrolyte, the negative current collecting disc and the positive current collecting disc are provided with a welding part and a hole part, and the welding part is used for welding a tab.
2. The safety assembly for a low internal resistance electrodeless lithium battery as claimed in claim 1, wherein the anode current collecting plate and the cathode current collecting plate are provided with welding portions, and the hole portions are alternately spaced from the welding portions.
3. The safety assembly for a low internal resistance electrodeless cylindrical lithium battery as claimed in claim 2, wherein said anode current collecting plate is made of steel and said cathode current collecting plate is made of aluminum.
4. The safety assembly for a low internal resistance electrodeless ear cylindrical lithium battery as claimed in claim 3, wherein a concave-convex surface for preventing light reflection is provided on the surface of the welding part.
5. The safety assembly for a low internal resistance electrodeless lithium battery as claimed in claim 1, wherein the edge of the negative current collecting plate is provided with a raised edge upwardly facing for welding, and the raised edge is provided with a plurality of notches.
6. The safety assembly for a low internal resistance electrodeless lithium cell as claimed in claim 5 wherein a plurality of raised portions are provided in the middle region of the anode current collecting plate, the raised portions being staggered for welding the rupture discs.
7. The safety assembly for a low internal resistance electrodeless ear cylindrical lithium battery as claimed in claim 4 or 6, wherein said steel case is provided with a bottom hole at the bottom, the bottom hole is sealed by a rivet, and an insulating ring is provided between the rivet and the bottom hole.
8. The safety assembly for a low internal resistance electrodeless ear cylindrical lithium battery as claimed in claim 4 or 6, wherein said explosion-proof sheet is provided with an arc-shaped explosion-proof score line, and a plurality of breakage-proof reinforcing ribs are provided at appropriate positions along the outer side of said explosion-proof score line.
9. The safety assembly for a electrodeless lithium cell having a low internal resistance as claimed in claim 8, wherein said explosion-proof score line is set at 270 ° to 355 °.
10. The safety assembly for a low internal resistance electrodeless ear cylindrical lithium battery as claimed in claim 8, wherein said rupture disc is provided with a welding ridge, and the welding ridge is welded with the steel can.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210105175.3A CN114597504A (en) | 2022-01-28 | 2022-01-28 | Safety assembly of low-internal-resistance cylindrical lithium battery without electrode lugs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210105175.3A CN114597504A (en) | 2022-01-28 | 2022-01-28 | Safety assembly of low-internal-resistance cylindrical lithium battery without electrode lugs |
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| CN114597504A true CN114597504A (en) | 2022-06-07 |
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| CN202210105175.3A Pending CN114597504A (en) | 2022-01-28 | 2022-01-28 | Safety assembly of low-internal-resistance cylindrical lithium battery without electrode lugs |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114899415A (en) * | 2022-07-13 | 2022-08-12 | 楚能新能源股份有限公司 | Collector plate assembly, cylindrical lithium ion battery and assembly process |
| CN116544602A (en) * | 2023-06-02 | 2023-08-04 | 深圳海辰储能控制技术有限公司 | End cover assembly for battery, single battery, battery pack and electric equipment |
| WO2024021327A1 (en) * | 2022-07-28 | 2024-02-01 | 湖北亿纬动力有限公司 | Current collecting disc and battery |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104485483A (en) * | 2014-12-16 | 2015-04-01 | 天津神鹿能源有限公司 | Lithium ion power battery |
| CN207572412U (en) * | 2017-11-13 | 2018-07-03 | 泰兴市振兴电子有限公司 | A kind of no gasket lithium battery cap |
| CN214043712U (en) * | 2020-12-10 | 2021-08-24 | 湖北亿纬动力有限公司 | Lithium battery current collecting disc and cylindrical lithium battery comprising same |
| CN113809335A (en) * | 2021-08-24 | 2021-12-17 | 贵阳比耐新能源科技有限公司 | Cylindrical steel shell battery and manufacturing method thereof |
| CN113921765A (en) * | 2021-09-29 | 2022-01-11 | 蜂巢能源科技有限公司 | Cylindrical lithium battery and preparation method thereof |
-
2022
- 2022-01-28 CN CN202210105175.3A patent/CN114597504A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104485483A (en) * | 2014-12-16 | 2015-04-01 | 天津神鹿能源有限公司 | Lithium ion power battery |
| CN207572412U (en) * | 2017-11-13 | 2018-07-03 | 泰兴市振兴电子有限公司 | A kind of no gasket lithium battery cap |
| CN214043712U (en) * | 2020-12-10 | 2021-08-24 | 湖北亿纬动力有限公司 | Lithium battery current collecting disc and cylindrical lithium battery comprising same |
| CN113809335A (en) * | 2021-08-24 | 2021-12-17 | 贵阳比耐新能源科技有限公司 | Cylindrical steel shell battery and manufacturing method thereof |
| CN113921765A (en) * | 2021-09-29 | 2022-01-11 | 蜂巢能源科技有限公司 | Cylindrical lithium battery and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114899415A (en) * | 2022-07-13 | 2022-08-12 | 楚能新能源股份有限公司 | Collector plate assembly, cylindrical lithium ion battery and assembly process |
| WO2024021327A1 (en) * | 2022-07-28 | 2024-02-01 | 湖北亿纬动力有限公司 | Current collecting disc and battery |
| CN116544602A (en) * | 2023-06-02 | 2023-08-04 | 深圳海辰储能控制技术有限公司 | End cover assembly for battery, single battery, battery pack and electric equipment |
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