CN113131102A - Battery and manufacturing method thereof - Google Patents
Battery and manufacturing method thereof Download PDFInfo
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- CN113131102A CN113131102A CN202110400894.3A CN202110400894A CN113131102A CN 113131102 A CN113131102 A CN 113131102A CN 202110400894 A CN202110400894 A CN 202110400894A CN 113131102 A CN113131102 A CN 113131102A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 230000000149 penetrating effect Effects 0.000 claims abstract description 5
- 238000003466 welding Methods 0.000 claims description 62
- 238000000034 method Methods 0.000 claims description 20
- 238000007789 sealing Methods 0.000 claims description 15
- 238000005452 bending Methods 0.000 claims description 5
- 239000012212 insulator Substances 0.000 claims 1
- 230000005611 electricity Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
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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
- H01M10/04—Construction or manufacture in general
- H01M10/0404—Machines for assembling batteries
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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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Abstract
The invention relates to the technical field of batteries, in particular to a battery and a manufacturing method thereof, wherein the battery comprises a shell, a battery cell, a negative pole confluence disc, a positive pole confluence disc and a positive pole post, wherein the shell is columnar, the shell comprises a second end face, the battery cell is arranged in the shell, the battery cell comprises a negative end face and a positive end face which are oppositely arranged, the negative pole confluence disc is attached to the negative end face to be electrically connected with a negative pole of the battery cell, a vertical edge is circumferentially arranged at the edge of the negative pole confluence disc, the outer wall surface of the vertical edge is electrically connected with the inner wall surface of the shell, the positive pole confluence disc is attached to the positive end face to be electrically connected with a positive pole of the battery cell, the positive pole post is arranged at a second through hole on the second end face in a penetrating manner, the positive pole post is not. The battery can meet the overcurrent requirement of large current so as to meet higher quick charging speed.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a battery and a manufacturing method thereof.
Background
In the field of new energy automobiles, people increasingly demand quick charging capacity of batteries. At present, the quick charge requirement is improved to 20min, 80% of electricity is fully charged, namely the charge rate reaches about 3C. The larger the capacity of the battery is, the larger the charging filtering and charging current of the battery is, for example, the battery with the capacity of 25Ah, the overcurrent capacity in a steady state needs to reach 75A, so the higher charging speed means that the requirement on the internal link part of the battery is higher, namely, the larger overcurrent capacity needs to be ensured. For the cylindrical battery, two technical schemes exist at the internal linking part: one is to adopt a mode of connecting the positive and negative electrode lugs with the steel shell and the cover plate, and the connection mode needs to adopt a welding process to connect the electrode lugs with the steel shell and the cover plate respectively and overflow through welding spot positions. However, the welding spot of the connection mode is small, the overcurrent capacity is weak, and the requirement of large-current overcurrent cannot be met. The other mode is that the roll core and the bus collecting disc are welded, and the bus collecting disc and the cover plate are connected through the connecting sheet, so that the problem that the area of a welding spot is too small still exists in the connection mode, and the requirement for increasing the quick charging capacity of the battery cannot be met.
Disclosure of Invention
The invention aims to provide a battery which can meet the requirement of heavy current overcurrent so as to meet higher quick charging speed.
In order to achieve the purpose, the invention adopts the following technical scheme:
a battery, comprising:
the shell is cylindrical and comprises a second end face;
the battery cell is arranged in the shell and comprises a negative end face and a positive end face which are oppositely arranged;
the negative pole confluence disc is attached to the negative pole end face and is electrically connected with the negative pole of the battery cell, vertical edges are circumferentially arranged at the edges of the negative pole confluence disc, and the outer wall surfaces of the vertical edges are attached to and electrically connected with the inner wall surface of the shell;
the positive pole confluence disc is attached to the positive pole end face and is electrically connected with the positive pole of the battery cell;
the positive pole column penetrates through the second through hole on the second end face, the positive pole column is insulated from the shell, and the end face of the positive pole column is attached to and electrically connected with the disc face of the positive bus disc.
Optionally, the positive pole post is welded to the contact surface of the positive bus plate.
Optionally, an outer wall surface of the vertical side abuts an inner wall surface of the housing.
Optionally, the vertical edge is welded to the housing.
Optionally, the welding and welding of the vertical edge and the shell are printed as a continuous straight line, a broken line or a curve;
or the welding seal of the vertical edge and the shell is in multiple sections, and the multiple sections of the welding seal form a straight line, a broken line or a curve.
Optionally, the casing includes a first end face opposite to the second end face, the battery further includes a cover plate, one face of the cover plate is attached to a face of the negative pole current collecting plate deviating from the battery core, and the other face of the cover plate is attached to the inner wall of the first end face.
Optionally, still include sealed insulating part, sealed insulating part sets up the casing with between the anodal utmost point post, anodal utmost point post with the casing riveting.
Another object of the present invention is to provide a method for manufacturing a battery, which can satisfy the requirement of large current overflow to satisfy a high rapid charging speed.
In order to achieve the purpose, the invention adopts the following technical scheme:
a manufacturing method of the battery comprises the following steps:
s1: welding a confluence disc and the battery cell: welding the negative pole confluence disc on the negative pole end face, and welding the positive pole confluence disc on the positive pole end face;
installing the anode pole: penetrating the positive pole column through the second through hole, and riveting the positive pole column and the shell, wherein a sealing insulating piece is arranged between the positive pole column and the shell to prevent the positive pole column and the shell from being electrically connected;
s2: the battery core is arranged into a shell: one end of the shell, which is not provided with the positive pole column, is provided with an opening, and the welded battery cell is placed into the shell from the opening so that the positive pole column is in contact with the positive bus disc;
s3: welding the positive pole: welding the contact surface of the positive pole column and the positive bus plate;
s4: installing a cover plate: placing the cover plate on the surface of the negative bus bar disc, which is far away from the battery core;
s5: pre-sealing: bending the shell at the curling edge at one end of the opening towards the axis by using a sealing device for a first angle, wherein the first angle is smaller than 90 degrees;
s6: and (2) secondary sealing: continuously bending the turned edge to 90 degrees towards the axis by using the sealing equipment so as to enable the turned edge to be tightly attached to the outer surface of the cover plate;
s7: welding the negative bus plate: and welding the vertical edge with the shell.
Optionally, in step S3, welding a contact surface between the positive electrode post and the positive electrode bus tray by using an ultrasonic welding process or a resistance welding process;
and/or in step S7, welding the vertical edges and the shell by a laser welding process, wherein the welding mark is a continuous straight line, a broken line or a curve, or the welding mark is a plurality of segments, and the welding mark forms a straight line, a broken line or a curve.
Optionally, in step S1, the diameter of the negative bus bar is larger than the diameter of the cross section of the battery cell;
in step S2, a flared opening is formed at one end of the opening of the casing, and when the battery cell is inserted into the casing, a protruding portion of the negative bus bar is correspondingly disposed at the flared opening;
in step S5, the method further includes reducing the flare with a reducing device to make the outer wall surface of the vertical side abut against the inner wall surface of the housing.
The invention has the beneficial effects that:
the invention provides a battery, which comprises a shell, a battery cell, a negative pole convergence plate, a positive pole convergence plate and a positive pole, wherein the shell is columnar, the shell comprises a second end surface, the battery cell is arranged in the shell, the battery cell comprises a negative pole end surface and a positive pole end surface which are oppositely arranged, the negative pole convergence plate is attached to the negative pole end surface and is electrically connected with a negative pole of the battery cell, a vertical edge is circumferentially arranged at the edge of the negative pole convergence plate, the outer wall surface of the vertical edge is electrically connected with the inner wall surface of the shell, the positive pole convergence plate is attached to the positive pole end surface and is electrically connected with a positive pole of the battery cell, the positive pole penetrates through a second through hole on the second end surface, the positive pole is not in contact with the shell, and the end surface of the positive. The electric core negative pole and the negative pole of this battery converge the quotation contact, and the negative pole converges the perpendicular limit and the casing face contact of dish, and the positive and positive quotations contact that converges of electric core, positive pole converge the dish and contact with anodal utmost point post face, so the electric quantity flow area of this battery is big, can satisfy the requirement that overflows of heavy current to satisfy higher fast speed of charging.
Drawings
Fig. 1 is a schematic structural diagram of a battery provided in an embodiment of the present invention;
fig. 2 is a schematic diagram of step S1 of the method for manufacturing a battery according to the embodiment of the present invention;
fig. 3 is a schematic view of steps S2 and S3 of the battery manufacturing method provided by the embodiment of the invention;
fig. 4 is a schematic diagram of step S4 of the battery manufacturing method according to the embodiment of the present invention;
fig. 5 is a schematic diagram of step S5 of the method for manufacturing a battery according to the embodiment of the present invention;
fig. 6 is a schematic diagram of steps S6 and S7 of the battery manufacturing method provided by the embodiment of the invention.
In the figure:
1. a housing; 11. curling;
2. an electric core;
3. a negative pole confluence plate; 31. erecting edges;
4. a positive pole collector plate;
5. a positive pole column;
6. and (7) a cover plate.
Detailed Description
The technical scheme of the invention is further explained by combining the attached drawings and the embodiment. 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 but not all of the elements associated with the present invention are shown in the drawings.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
As shown in fig. 1, the present embodiment provides a battery having a diameter in the range of 20mm to 60mm and an overall height in the range of 60mm to 150 mm. The battery comprises a shell 1, an electric core 2, a negative pole bus tray 3, a positive pole bus tray 4 and a positive pole post 5. The shell 1 is columnar, and comprises a first end face and a second end face which are oppositely arranged, a first through hole is formed in the first end face, and a second through hole is formed in the second end face.
In order to ensure good contact between the outer wall surface of the vertical side 31 and the inner wall surface of the housing 1, optionally, the outer wall surface of the vertical side 31 abuts against the inner wall surface of the housing 1. In order to further ensure good contact between the vertical edge 31 and the housing 1 and smooth current flow, the vertical edge 31 is optionally welded to the housing 1. Alternatively, the welding between the vertical sides 31 and the housing 1 is performed using a laser welding process. Alternatively, the welding seal of the vertical edge 31 and the shell 1 may be a continuous straight line, a broken line or a curve, or may be discontinuous multiple segments, and the multiple segments form a straight line, a broken line or a curve.
Optionally, the battery is also provided with a cover plate 6 for encapsulation. One side of the cover plate 6 is attached to the surface of the negative pole bus bar disc 3 deviating from the battery core 2, and the other side of the cover plate 6 is attached to the inner wall of the first end face. The setting of apron 6 can effectively protect the negative pole to converge dish 3 and not damaged, and can effectively guarantee through attached connected mode that the negative pole converges dish 3 and does not take place to remove, helps the negative pole to converge dish 3 erect limit 31 and casing 1 contact well for a long time.
The positive pole converges and coils 4 attached on the anodal terminal surface of electric core 2 to realize that anodal converge coils 4 and the anodal electricity of electric core 2 are connected. The positive pole 5 is arranged at the second through hole on the second end face in a penetrating mode, the end face, facing the battery cell 2, of the positive pole 5 is in contact with the disc face of the positive bus bar 4, so that the electric connection between the positive pole and the battery cell 2 is achieved, and the positive pole 5 is electrically connected with the positive pole of the battery cell 2. In order to guarantee the overcurrent requirement of the large current, optionally, the positive pole post 5 is welded to the contact surface of the positive bus plate 4. Preferably, the contact surface of the positive pole post 5 and the positive bus plate 4 is welded by ultrasonic welding or resistance welding. The welding speed of the ultrasonic welding process is high, the welding strength of the contact surface of the positive pole post 5 and the positive bus disc 4 can be guaranteed, and the time of the manufacturing process can be shortened.
Because casing 1 is connected with electric core 2 negative pole electricity, so in order to guarantee that anodal utmost point post 5 and casing 1 contactless, optionally, this battery still is provided with seal insulation spare, and seal insulation spare sets up between casing 1 and anodal utmost point post 5 for avoid casing 1 and anodal utmost point post 5 to be connected electrically.
If the position of the positive pole post 5 relative to the positive bus disc 4 is not firm, the positive pole post is easy to break away from the positive bus disc in a long-term use process, so that the current circulation is not smooth, and even the battery is damaged. Therefore, in order to ensure that the relative position between the positive pole post 5 and the positive bus plate 4 is not changed, it is necessary to ensure that the positive bus plate 4 and the housing 1 are relatively fixed, and the relative position between the positive pole post 5 and the housing 1 is not changed. Optionally, the positive pole 5 is riveted with the housing 1 to ensure the fixed connection of the two.
The battery that this embodiment provided, through setting up 2 negative poles of electricity core and 3 face contacts of negative pole confluence disc, the negative pole converges the perpendicular limit 31 and 1 face contact of casing of dish 3, 2 anodal and 4 face contacts of anodal confluence disc of electricity core, and anodal confluence disc 4 and 5 face contacts of anodal utmost point post to guarantee the great electric quantity flow area of battery, thereby satisfy the overcurrent requirement of heavy current, so this battery can possess higher quick charge speed.
The embodiment also provides a manufacturing method of the battery, which comprises the following steps:
s1: welding the battery cell 2: welding a negative pole confluence disc 3 on the end face of a negative pole, and welding a positive pole confluence disc 4 on the end face of a positive pole; installing the anode pole 5: and (3) penetrating the anode pole 5 through the second through hole, riveting the anode pole 5 with the shell 1, wherein a sealing insulating part is arranged between the anode pole 5 and the shell 1 to avoid the electrical connection between the anode pole and the shell. There is no particular order in this step of welding the cell 2 and mounting the positive electrode post 5. The anode pole 5 is placed into the second through hole of the second end face from the opening of the shell 1, penetrates through the second through hole and is riveted.
S2: and (3) putting the battery cell 2 into a shell: the end of the casing 1, on which the anode pole 5 is not installed, is provided with an opening, and the welded battery cell 2 is placed into the casing 1 from the opening, so that the second end surface is close to the anode end surface.
S3: welding the positive pole 5: and welding the contact surface of the positive pole 5 and the positive bus disc 4. Alternatively, in this step S3, the contact surface of the positive electrode post 5 and the positive electrode bus tray 4 is welded using an ultrasonic welding process or a resistance welding process.
S4: installing a cover plate 6: and placing the cover plate 6 on the surface of the negative pole bus bar 3 departing from the battery cell 2.
S5: pre-sealing: the crimping 11 of the housing 1 at the open end is bent towards the axial center by a sealing device by a first angle, which is smaller than 90 °.
S6: and (2) secondary sealing: and continuously bending the edge curl 11 to 90 degrees towards the axle center by using a sealing device so that the edge curl 11 is attached to the outer surface of the cover plate 6. This step can compress tightly casing 1 is inside, can realize anodal dish 4 and the butt of anodal utmost point post 5 of converging, anodal dish 4 and the butt of electric core 2 of converging, electric core 2 and the butt of negative pole dish 3 of converging, the butt of negative pole dish 3 and apron 6 of converging, apron 6 and turn-up 11's butt. The contact structure is beneficial to ensuring good contact of each contact surface so as to ensure current circulation.
S7: welding a negative pole confluence disc 3: the vertical edge 31 is welded to the housing 1. Alternatively, in step S7, the vertical edge 31 and the shell 1 are welded by a laser welding process, and the welding mark may be a continuous straight line, a broken line or a curved line, or the welding mark may be multiple segments, and the multiple segments form a straight line, a broken line or a curved line.
In order to achieve abutment between the outer wall surface of the vertical side 31 and the inner wall surface of the casing 1, optionally, in step S1, the diameter of the negative bus bar 3 is larger than the diameter of the cross section of the battery cell 2, so that the negative bus bar 3 has a circumferential protruding edge relative to the battery cell 2 after welding. In step S2, the open end of the shell 1 is provided with a flared opening, i.e. a step surface is annularly provided on the shell 1, and the diameter of the cross section of the shell 1 facing the open end is larger than the diameter of the shell 1 from the second end surface to the step surface, taking the step surface as a partition. After the electric core 2 enters the shell, the protruding part of the negative pole current collecting disc 3 is correspondingly arranged at the flaring opening, namely the protruding part of the negative pole current collecting disc 3 is arranged at the position of the step surface facing the opening. Step S5 further includes necking the flare by using a necking apparatus to bring the outer wall surface of the vertical side 31 into abutment with the inner wall surface of the case 1.
The battery manufactured by the manufacturing method can ensure higher strength, and each joint where current flows inside the battery can ensure the connection area and the connection strength, so that the manufactured battery meets the heavy current overcurrent requirement to achieve higher quick charging speed.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A battery, comprising:
the shell (1), the shell (1) is columnar, and the shell (1) comprises a second end face;
the battery cell (2) is arranged in the shell (1), and the battery cell (2) comprises a negative end face and a positive end face which are oppositely arranged;
the negative pole confluence disc (3) is attached to the negative pole end face and is electrically connected with a negative pole of the battery core (2), vertical edges (31) are circumferentially arranged at the edge of the negative pole confluence disc (3), and the outer wall surfaces of the vertical edges (31) are attached to and electrically connected with the inner wall surface of the shell (1);
the positive pole confluence disc (4), the positive pole confluence disc (4) is attached to the positive pole end face so as to be electrically connected with the positive pole of the battery cell (2);
the positive pole column (5) penetrates through the second through hole in the second end face, the positive pole column (5) is insulated from the shell (1), and the end face of the positive pole column (5) is attached to and electrically connected with the disc face of the positive bus disc (4).
2. The battery according to claim 1, characterized in that the positive pole post (5) is welded to the contact surface of the positive bus plate (4).
3. The battery according to claim 1, wherein an outer wall surface of the vertical side (31) abuts against an inner wall surface of the case (1).
4. The battery according to claim 1, characterized in that the vertical sides (31) are welded to the housing (1).
5. The battery according to claim 4, characterized in that the welding weld of the vertical edge (31) to the case (1) is a continuous straight line, a broken line or a curved line;
or the welding seal of the vertical edge (31) and the shell (1) is in multiple sections, and the multiple sections of the welding seal form a straight line, a broken line or a curve.
6. The battery according to claim 1, wherein the casing (1) comprises a first end surface opposite to the second end surface, the battery further comprises a cover plate (6), one surface of the cover plate (6) is attached to the surface of the negative bus bar (3) facing away from the battery core (2), and the other surface of the cover plate (6) is attached to the inner wall of the first end surface.
7. The battery according to claim 6, further comprising a seal insulator disposed between the case (1) and the positive electrode post (5), the positive electrode post (5) being riveted to the case (1).
8. A method of manufacturing a battery according to any one of claims 1 to 7, comprising the steps of:
s1: welding confluence disc and the battery cell (2): welding the negative pole confluence disc (3) on the negative pole end face, and welding the positive pole confluence disc (4) on the positive pole end face;
installing the positive pole column (5): penetrating the positive pole post (5) through the second through hole, and riveting the positive pole post (5) with the shell (1), wherein a sealing insulating piece is arranged between the positive pole post (5) and the shell (1) to avoid electric connection of the positive pole post and the shell;
s2: the battery cell (2) is placed into a shell: one end, not provided with the positive pole post (5), of the shell (1) is provided with an opening, the welded battery core (2) is placed into the shell (1) from the opening, and the positive pole post (5) is in contact with the positive bus disc (4);
s3: welding the positive pole column (5): welding the contact surface of the positive pole post (5) and the positive bus disc (4);
s4: mounting a cover plate (6): placing the cover plate (6) on the surface of the negative bus bar disc (3) facing away from the battery core (2);
s5: pre-sealing: bending the shell (1) at the turned edge (11) at one end of the opening to an axis by a first angle by using a sealing device, wherein the first angle is smaller than 90 degrees;
s6: and (2) secondary sealing: continuously bending the curled edge (11) to 90 degrees towards the axis by using the sealing equipment so as to enable the curled edge (11) to be tightly attached to the outer surface of the cover plate (6);
s7: welding the negative bus plate (3): and welding the vertical edge (31) and the shell (1).
9. The method for manufacturing a battery according to claim 8, characterized in that:
in the step S3, welding the contact surface of the positive pole post (5) and the positive bus plate (4) by adopting an ultrasonic welding process or a resistance welding process;
and/or in step S7, welding the vertical edge (31) and the shell (1) by adopting a laser welding process, wherein the welding mark is a continuous straight line, a broken line or a curve, or the welding mark is a plurality of sections, and the plurality of sections of welding mark form a straight line, a broken line or a curve.
10. The method for manufacturing a battery according to claim 8, characterized in that:
in step S1, the diameter of the negative pole confluence disc (3) is larger than the diameter of the cross section of the battery cell (2);
in step S2, a flare is provided at one end of the opening of the casing (1), and when the electric core (2) enters the casing, a protruding portion of the negative bus bar (3) is correspondingly provided at the flare;
in step S5, the method further includes reducing the flare by using a reducing device so that an outer wall surface of the vertical side (31) abuts against an inner wall surface of the housing (1).
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| CN202110400894.3A CN113131102A (en) | 2021-04-14 | 2021-04-14 | Battery and manufacturing method thereof |
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| CN202110400894.3A CN113131102A (en) | 2021-04-14 | 2021-04-14 | Battery and manufacturing method thereof |
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Cited By (5)
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|---|---|---|---|---|
| CN113644355A (en) * | 2021-08-16 | 2021-11-12 | 胡高建 | Power battery and assembling method thereof |
| CN113937429A (en) * | 2021-10-14 | 2022-01-14 | 湖北亿纬动力有限公司 | Negative electrode connecting method and device |
| CN114628866A (en) * | 2022-03-28 | 2022-06-14 | 蓝京新能源(嘉兴)有限公司 | High-energy-density cylindrical battery and assembly process thereof |
| CN114824674A (en) * | 2022-03-28 | 2022-07-29 | 蓝京新能源(嘉兴)有限公司 | Cylindrical battery with high volume utilization rate and assembly process thereof |
| WO2023231282A1 (en) * | 2022-06-02 | 2023-12-07 | 湖北亿纬动力有限公司 | Battery, battery module and battery pack |
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Application publication date: 20210716 |