CN114725591A - Full-tab battery structure without top cover welding and assembly method thereof - Google Patents
Full-tab battery structure without top cover welding and assembly method thereof Download PDFInfo
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- CN114725591A CN114725591A CN202210272164.4A CN202210272164A CN114725591A CN 114725591 A CN114725591 A CN 114725591A CN 202210272164 A CN202210272164 A CN 202210272164A CN 114725591 A CN114725591 A CN 114725591A
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- top cover
- flow guide
- guide top
- sealing
- shell
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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
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
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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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- Chemical Kinetics & Catalysis (AREA)
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- General Chemical & Material Sciences (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention relates to a full-lug battery structure without top cover welding and an assembly method thereof, the battery structure comprises a shell, a fixed roller groove, a positive pole flow guide top cover, a negative pole flow guide top cover, an explosion-proof valve, a liquid injection hole and a winding core, wherein the positive pole flow guide top cover and the negative pole flow guide top cover are arranged at two ends of the shell, folded angle notches are reserved at two ends of the shell at corners, a sealing edge is formed at a part between two adjacent folded angle notches, the fixed roller groove is arranged below the folded angle notches, a circle of sealing fixing ring is integrated at the edges of the positive pole flow guide top cover and the negative pole flow guide top cover, the outer edge of the sealing fixing ring is provided with a fixing groove matched with the fixed roller groove, the explosion-proof valve and the liquid injection hole are respectively arranged on the negative pole flow guide top cover and the positive pole flow guide top cover, the winding core is fixedly spliced with the shell, and the lugs at two sides of the winding core are respectively welded with a flexible connection and the flow guide top cover. The invention adopts pressure sealing and roller slot limiting, and top cover welding is not needed; the battery cell uses the flow guide top cover, and the area of the whole flow guide top cover can be almost used as a pole; the simple top cover structure eliminates a conductive block, and reduces the number of structural parts and the die sinking cost.
Description
Technical Field
The invention belongs to the technical field of electric automobiles, and particularly relates to a full-tab battery structure without top cover welding and an assembly method thereof.
Background
With the introduction of the two-carbon policy, electric vehicles will be developed further, and the progress of power battery technology will follow. The power battery is used as a main power source of the new energy automobile and becomes one of the key parts of the electric automobile. However, it is undeniable that the slow charging speed is a big pain point of the electric automobile, and how to improve the quick charging capability of the battery is a big direction of the current power battery research. In the aspect of structural members, the flow area of the battery cell pole is increased, and the method is a necessary scheme for improving the quick charging capacity. However, the structured light aluminum sheet and the pole of the existing power battery top cover belong to two different parts, and the area of the pole is limited in the size of the top cover.
The prior art discloses a battery cell and cover plate assembly structure, which respectively welds two naked battery cell ends on a positive pole claw I, a negative pole claw I and the side surfaces thereof which correspond to positions and are far away from a top cover. However, the battery core and cover plate assembly structure has more parts and complex assembly process. The prior art also discloses a top cap piece of lithium cell includes base plate, utmost point post hole and extrusion application of force groove, through extruding from utmost point post hole outward utmost point post hole makes utmost point post pore wall plastic deformation and compresses tightly the sealing washer, guarantees the sealed of top cap. Although the internal space of the lithium battery shell is increased by the structure, the battery has a complex structure and high assembly difficulty; meanwhile, the flow area of the cell pole column cannot be improved to the maximum extent.
Based on this, need to develop a full utmost point ear battery structure that need not top cap welded urgently, when the area of overflowing of increase utmost point post, can reduce part quantity, reduce the assembly degree of difficulty.
Disclosure of Invention
The invention aims to provide a full-lug battery structure without top cover welding and an assembly method of the full-lug battery structure without top cover welding, so as to solve the problems that the existing structural part is complex, the mold opening cost is high, and the flow area of a battery core pole needs to be improved.
The purpose of the invention is realized by the following technical scheme:
a full-lug battery structure without top cover welding comprises a shell 1-1, a fixed roller groove 1-2, a positive electrode flow guide top cover 2-1, a negative electrode flow guide top cover 2-2, an explosion-proof valve 3, a liquid injection hole 4 and a winding core 7;
the anode flow guide top cover 2-1 and the cathode flow guide top cover 2-2 are arranged at two ends of the shell 1-1, folded angle notches 1-4 are reserved at the corners of the two ends of the shell 1-1, a sealing edge 1-3 is formed at a part between every two adjacent folded angle notches 1-4, and a fixing roller groove 1-2 is arranged below the sealing edge 1-3;
a circle of sealing fixing ring 2-3 is integrated at the edges of the anode diversion top cover 2-1 and the cathode diversion top cover 2-2, a fixing groove 2-4 is arranged at the outer edge of the sealing fixing ring 2-3, and the fixing groove 2-4 is matched with the fixing roller groove 1-2;
the explosion-proof valve 3 and the liquid injection hole 4 are respectively arranged on the negative pole flow guide top cover 2-2 and the positive pole flow guide top cover 2-1; the winding core 7 is inserted into the shell 1-1, and the pole lugs on two sides of the winding core are respectively fixed with the flow guide top cover 2-1 or fixed with the flow guide top cover 2-1 through a flexible connection 8.
Furthermore, the height of the sealing edge is 1-3 mm to 5mm, and a fixed roller groove 1-2 is arranged 1-2 mm below the sealing edge 1-3.
Further, the radius of the fixed roller groove 1-2 is 1.5-2.5 times of the thickness of the shell 1-1.
Furthermore, the material of the sealing and fixing ring 2-3 is preferably fluororubber.
Further, the thickness of the sealing and fixing ring 2-3 is 4-6 mm.
Furthermore, the outer edge of the sealing and fixing ring 2-3 is gradually inclined from the outer side to the inner side of the battery core, so that the side length of the sealing and fixing ring 2-3 on the outer side of the flow guide top cover is larger than that of the innermost side, the side length of the inner side of the sealing and fixing ring 2-3 is 0.2-0.6 mm smaller than that of the corresponding cavity of the shell 1-1, and the side length of the outer side of the sealing and fixing ring 2-3 is 0.6-2 mm larger than that of the corresponding cavity of the shell 1-1.
Furthermore, the lower plastic 5 of the negative electrode and the lower plastic 6 of the positive electrode are designed and arranged according to different design schemes of the flow guide top cover, and are fixed below the corresponding flow guide top cover in a bonding, inserting or bonding and inserting combination mode.
Furthermore, the outer parts of the negative electrode flow guide top cover 2-2 and the positive electrode flow guide top cover 2-1 protrude out of the outer surface of the sealing and fixing ring 2-3 by 2-5 mm, the inner parts protrude out of the inner surface of the sealing and fixing ring 2-3 and the lower plastic rubber by 0.5-2 mm, and the negative electrode flow guide top cover and the positive electrode flow guide top cover are used as a battery cell pole.
Furthermore, the pole lugs on the two sides are respectively welded with the flow guide top cover 2-1 through the flexible connection 8, or are directly welded with the flow guide top cover 2-1.
The invention discloses an assembly method of a full-tab battery structure without welding a top cover, which comprises the following steps:
A. pre-rolling a shell 1-1 to form a fixed roller groove 1-2 with the depth of 0.6-1.2 times of the thickness of the shell;
B. inserting the winding core welded with the flow guide top cover in advance into the shell 1-1, welding the flow guide top cover on the other side at the lug on the other side of the winding core 7, wherein the lug on the winding core 7 can be directly welded with the flow guide top cover 2-1 by welding the flow guide top cover 2-1, and can also be welded with the flow guide top cover 2-1 by flexible connection 8;
C. pressing the flow guide top cover into the shell 1-1, and clamping the fixing grooves 2-4 at the two sides into the fixing roller grooves 1-2;
D. rolling the fixed roller groove 1-2 to a designed depth;
E. the edge 1-3 of the seal is folded inwards to be fixed at a right angle.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a full-tab battery structure without top cover welding, which adopts pressure sealing, roller slot limiting and top cover welding; meanwhile, the battery core uses the flow guide top cover, and the area of the whole flow guide top cover can be almost used as a pole; in addition, the structure of the top cover is simplified, structures such as a conductive block are omitted, and the number of structural parts and the die sinking cost are reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic diagram of a cross-sectional view of a battery cell in embodiment 1 of the present invention;
fig. 2 is a cross-sectional view of a cell negative electrode current-guiding top cap in embodiment 1 of the present invention;
fig. 3 is a cross-sectional view of a cell positive electrode current-guiding top cover in embodiment 1 of the present invention;
FIG. 4 is a schematic view of a housing in embodiment 1 of the present invention;
fig. 5 is a schematic view of the case of embodiment 1 of the present invention after being packaged;
in the figure, 1-1 part of a shell 1-2 parts of a fixed roller groove 1-3 parts of a sealing edge 1-4 parts of a bevel gap 2-1 part of a positive pole diversion top cover 2-2 parts of a negative pole diversion top cover 2-3 parts of a sealing fixed ring 2-4 parts of a fixed groove 3 parts of an explosion-proof valve 4 parts of a liquid injection hole 5 parts of negative pole lower plastic 6 parts of positive pole lower plastic 7 parts of a winding core 8 parts of a soft connection.
Detailed Description
The invention is further illustrated by the following examples:
the present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
The invention discloses a full-tab battery structure without top cover welding, which comprises a shell 1-1, a fixed roller groove 1-2, a sealing edge 1-3, a bevel gap 1-4 (not shown in the figure), an anode flow guide top cover 2-1, a cathode flow guide top cover 2-2, a sealing fixing ring 2-3, a fixed groove 2-4, an explosion-proof valve 3, a liquid injection hole 4, a cathode lower plastic 5, an anode lower plastic 6, a winding core 7 and a flexible connection 8.
The anode flow guide top cover 2-1 and the cathode flow guide top cover 2-2 are arranged at two ends of the shell 1-1, and bent angle notches 1-4 are reserved at the corners of the two ends of the shell 1-1. The part between two adjacent bevel notches 1-4 forms a sealing edge 1-3, the height of the sealing edge 1-3 is 1-5 mm, and a fixed roller groove 1-2 is arranged at a position 1-2 mm below the sealing edge 1-3. The radius of the fixed roller groove 1-2 is 1.5-2.5 times of the thickness of the shell 1-1.
And a circle of sealing fixing ring 2-3 is integrated at the edges of the anode flow guide top cover 2-1 and the cathode flow guide top cover 2-2. Fluororubber is preferably selected as the material of the sealing and fixing ring 2-3, the thickness of the sealing and fixing ring 2-3 is 4-6 mm, a fixing groove 2-4 is formed in the outer edge of the sealing and fixing ring 2-3, and the fixing groove 2-4 is matched with the fixing roller groove 1-2.
The outer edge of the sealing and fixing ring 2-3 is gradually inclined from the outer side to the inner side of the battery core, so that the side length of the sealing and fixing ring 2-3 on the outer side of the flow guide top cover is larger than that of the innermost side, the side length of the inner side of the sealing and fixing ring 2-3 is 0.2-0.6 mm smaller than that of the corresponding cavity of the shell 1-1, and the side length of the outer side of the sealing and fixing ring 2-3 is 0.6-2 mm larger than that of the corresponding cavity of the shell 1-1.
The explosion-proof valve 3 and the liquid injection hole 4 are respectively arranged on the negative pole diversion top cover 2-2 and the positive pole diversion top cover 2-1, and the negative pole lower plastic 5 and the positive pole lower plastic 6 are designed and arranged according to different design schemes of the diversion top covers. And the water-guiding cover is fixed below the corresponding water-guiding top cover in a bonding, inserting or bonding and inserting combination mode.
The outer parts of the negative electrode flow guide top cover 2-2 and the positive electrode flow guide top cover 2-1 protrude out of the outer surface of the sealing fixing ring 2-3 by 2-5 mm, the inner sides protrude out of the inner surface of the sealing fixing ring 2-3 and the lower plastic rubber by 0.5-2 mm, and the negative electrode flow guide top cover and the positive electrode flow guide top cover are used as an electric core pole.
The winding core 7 is inserted into the shell 1-1, and the tabs on the two sides of the winding core are respectively welded with the flow guide top cover 2-1 through the flexible connection 8 or directly welded with the flow guide top cover 2-1.
The invention discloses an assembly method of a full-tab battery structure without welding a top cover, which comprises the following steps:
firstly, pre-rolling a shell 1-1 to form a fixed roller groove 1-2 with the depth of 0.6-1.2 times of the thickness of the shell; secondly, inserting the winding core welded with the flow guide top cover in advance into the shell 1-1, welding the flow guide top cover on the other side at a lug on the other side of the winding core 7, wherein the lug on the winding core 7 can be directly welded with the flow guide top cover 2-1 by welding the flow guide top cover 2-1, and can also be welded with the flow guide top cover 2-1 by a flexible connection 8; thirdly, pressing the flow guide top cover into the shell 1-1, and clamping the fixing grooves 2-4 at the two sides into the fixing roller grooves 1-2; fourthly, rolling the fixed roller groove 1-2 to a designed depth; finally, the edge 1-3 is folded inward to be fixed at right angles.
The guide top cover is fixed and sealed in a roller groove fixing, extruding sealing and edge-folding sealing mode, and the laser welding process is reduced. The whole flow guide top cover can be almost used as a conductive block, and the flow area of the battery cell structural member is greatly increased. The conductive block structure is removed, and the guide top cover is directly used as a conductive block, so that the mechanism is simplified, and the die sinking quantity is reduced.
Example 1
The full-tab battery structure without the need of top cover welding comprises a shell 1-1, wherein the total length of the outer contour of the shell 1-1 is 572mm, the width is 90.7mm, the thickness is 45mm, and the wall thickness is 0.6 mm. The battery cell is a battery cell with oppositely-arranged lugs in the length direction. As shown in FIG. 4, 1 folded corner notch 1-4 with a depth of 1mm is cut at 8 corners of the shell 1-1, and 8 sealing edges 1-3 with a thickness of 1mm are formed.
And rolling a fixed roller groove 1-2 on the surface of the shell 1-1 at a position 2mm below each sealing edge 1-3, wherein the depth of the fixed roller groove 1-2 is 0.6 mm.
The cathode flow guide top cover 2-1 is made of copper-aluminum composite materials, the anode flow guide top cover 2-2 is made of aluminum materials, and the length, the width and the thickness of the anode flow guide top cover are 77.8mm, 33.2mm and 5.2mm respectively. 2-3 parts of a fluororubber sealing and fixing ring are integrated on the periphery, the thickness of the sealing and fixing ring is 3.5mm, the width of the upper edge of the 2-3 sealing and fixing ring is 7.5mm, the width of the lower edge of the 2-3 sealing and fixing ring is 7.1mm, the length of the whole upper edge after the sealing and fixing ring and the guide top cover are integrated is 89.8mm (wherein 1.5mm is 1.3 mm of the overlapped composite part of the sealing and fixing ring and the guide top cover respectively on two sides), the length of the lower edge is 89mm, the width of the upper edge is 45.2mm, and the width of the lower edge is 44.4 mm.
And a circle of fixing groove 2-4 with the radius of 0.9mm is arranged on the outer side of the sealing fixing ring 2-3. The anode diversion top cover 2-2 is provided with a liquid injection hole 4, the cathode diversion top cover 2-1 is provided with an explosion-proof valve 3, and lower plastic cement is installed in a clamping mode below the diversion top cover.
When the battery is assembled, firstly, the flexible connection 8 of the battery core is welded with the part, protruding from the lower part of the positive electrode diversion top cover 2-2, of the plastic, then the other end of the flexible connection is welded with a positive electrode lug, the welded roll core 7 is inserted into the battery core shell, the positive electrode diversion top cover 2-2 is pressed into the shell 1-1, and the fixed roll groove 1-2 is clamped into the fixed groove 2-4. And then, connecting and welding the cathode flow guide top cover 2-1 and the cathode welded with the top cover together, pressing the cathode flow guide top cover and the cathode welded with the top cover into the shell 1-1 in the same way, next, rolling all the fixed roller grooves 1-2 to the radius of 0.9mm again, completely matching and pressing the fixed roller grooves with the fixed grooves 2-4, and finally, folding all the sealing edges 1-3 inwards for 90 degrees to press the top cover for sealing. The cell is assembled.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that the present invention is not limited to the particular embodiments described herein, and that various obvious changes, rearrangements and substitutions will now be apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. The utility model provides a need not top cap welded full utmost point ear battery structure which characterized in that: comprises a shell (1-1), a fixed roller groove (1-2), a positive pole flow guide top cover (2-1), a negative pole flow guide top cover (2-2), an explosion-proof valve (3), a liquid injection hole (4) and a winding core (7);
the anode flow guide top cover (2-1) and the cathode flow guide top cover (2-2) are arranged at two ends of the shell (1-1), folded corner notches (1-4) are reserved at the corners of the two ends of the shell (1-1), a sealing edge (1-3) is formed between every two adjacent folded corner notches (1-4), and a fixing roller groove (1-2) is arranged below the sealing edge (1-3);
a circle of sealing fixing ring (2-3) is integrated at the edges of the anode diversion top cover (2-1) and the cathode diversion top cover (2-2), a fixing groove (2-4) is formed in the outer edge of the sealing fixing ring (2-3), and the fixing groove (2-4) is matched with the fixing roller groove (1-2);
the explosion-proof valve (3) and the liquid injection hole (4) are respectively arranged on the negative electrode flow guide top cover (2-2) and the positive electrode flow guide top cover (2-1); the winding core (7) is inserted into the shell (1-1), and the tabs on the two sides of the winding core are respectively fixed with the flow guide top cover (2-1) or fixed with the flow guide top cover (2-1) through the flexible connection (8).
2. The full tab battery structure without top cover welding as claimed in claim 1, wherein: the height of the sealing edge (1-3) is 1-5 mm, and a fixed roller groove (1-2) is arranged at a position 1-2 mm below the sealing edge (1-3).
3. The full-tab battery structure without top cover welding as claimed in claim 1, wherein: the radius of the fixed roller groove (1-2) is 1.5-2.5 times of the thickness of the shell (1-1).
4. The full tab battery structure without top cover welding as claimed in claim 1, wherein: the material of the sealing and fixing ring (2-3) is preferably fluororubber.
5. The full tab battery structure without top cover welding as claimed in claim 1, wherein: the thickness of the sealing and fixing ring (2-3) is 4-6 mm.
6. The full tab battery structure without top cover welding as claimed in claim 1, wherein: the outer edge of the sealing and fixing ring (2-3) is gradually inclined from the outer side to the inner side of the battery core, so that the side length of the sealing and fixing ring (2-3) on the outer side of the flow guide top cover is larger than that of the innermost side, the side length of the inner side of the sealing and fixing ring (2-3) is 0.2-0.6 mm smaller than that of the cavity of the shell (1-1), and the side length of the outer side of the sealing and fixing ring (2-3) is 0.6-2 mm larger than that of the cavity of the shell (1-1).
7. The full tab battery structure without top cover welding as claimed in claim 1, wherein: and (3) designing and arranging a cathode lower plastic (5) and an anode lower plastic (6) according to different design schemes of the flow guide top cover, and fixing the cathode lower plastic and the anode lower plastic below the corresponding flow guide top cover in a bonding, inserting or bonding and inserting combination mode.
8. The full tab battery structure without top cover welding as claimed in claim 1, wherein: the outer parts of the negative electrode flow guide top cover (2-2) and the positive electrode flow guide top cover (2-1) protrude out of the outer surface of the sealing fixing ring (2-3) by 2-5 mm, and the inner parts of the negative electrode flow guide top cover and the positive electrode flow guide top cover protrude out of the inner surface of the sealing fixing ring (2-3) and the lower plastic by 0.5-2 mm, and the negative electrode flow guide top cover and the positive electrode flow guide top cover are used as a battery core pole.
9. The method for assembling an all-tab battery structure without top cover welding as claimed in claim 1, wherein: the pole lugs on the two sides are respectively welded with the flow guide top cover (2-1) through flexible connections (8) or directly welded with the flow guide top cover (2-1).
10. The method for assembling an all-tab battery structure without cap welding according to claim 1, comprising the steps of:
A. pre-rolling a shell (1-1) to form a fixed roller groove (1-2) with the depth of 0.6-1.2 times of the thickness of the shell;
B. inserting the winding core welded with the flow guide top cover in advance into the shell (1-1), welding the flow guide top cover on the other side at a lug on the other side of the winding core (7), wherein the lug on the winding core (7) can be directly welded with the flow guide top cover (2-1) by welding the flow guide top cover (2-1), and can also be welded with the flow guide top cover (2-1) by flexible connection (8);
C. pressing the flow guide top cover into the shell (1-1), and clamping the fixing grooves (2-4) at the two sides into the fixing roller grooves (1-2);
D. rolling the fixed roller groove (1-2) to a designed depth;
E. the sealing edges (1-3) are folded inwards to be fixed at a right angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210272164.4A CN114725591A (en) | 2022-03-18 | 2022-03-18 | Full-tab battery structure without top cover welding and assembly method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210272164.4A CN114725591A (en) | 2022-03-18 | 2022-03-18 | Full-tab battery structure without top cover welding and assembly method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN114725591A true CN114725591A (en) | 2022-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210272164.4A Pending CN114725591A (en) | 2022-03-18 | 2022-03-18 | Full-tab battery structure without top cover welding and assembly method thereof |
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| CN (1) | CN114725591A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110089076A (en) * | 2010-01-29 | 2011-08-04 | 히다치 비클 에너지 가부시키가이샤 | Sealed battery and method for producing the same |
| CN204011501U (en) * | 2014-05-20 | 2014-12-10 | 中国人民解放军63971部队 | A kind of cylindrical battery capping structure |
| CN112151732A (en) * | 2020-09-30 | 2020-12-29 | 星恒电源(滁州)有限公司 | Round lithium battery and preparation method thereof |
| CN113871765A (en) * | 2021-09-26 | 2021-12-31 | 贵阳比耐新能源科技有限公司 | Cylindrical battery and manufacturing method thereof |
-
2022
- 2022-03-18 CN CN202210272164.4A patent/CN114725591A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110089076A (en) * | 2010-01-29 | 2011-08-04 | 히다치 비클 에너지 가부시키가이샤 | Sealed battery and method for producing the same |
| CN204011501U (en) * | 2014-05-20 | 2014-12-10 | 中国人民解放军63971部队 | A kind of cylindrical battery capping structure |
| CN112151732A (en) * | 2020-09-30 | 2020-12-29 | 星恒电源(滁州)有限公司 | Round lithium battery and preparation method thereof |
| CN113871765A (en) * | 2021-09-26 | 2021-12-31 | 贵阳比耐新能源科技有限公司 | Cylindrical battery and manufacturing method thereof |
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