CN217158372U - Battery and battery pack - Google Patents
Battery and battery pack Download PDFInfo
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- CN217158372U CN217158372U CN202220350025.4U CN202220350025U CN217158372U CN 217158372 U CN217158372 U CN 217158372U CN 202220350025 U CN202220350025 U CN 202220350025U CN 217158372 U CN217158372 U CN 217158372U
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- lower plastic
- limiting structure
- protective film
- protection film
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The application discloses a battery and a battery pack, wherein the battery comprises a shell, a battery core, a top cover assembly and a protective film, and one end of the shell is provided with an opening; the battery core is accommodated in the shell; the top cover component is connected to the electric core and comprises a top cover plate, lower plastic and a limiting structure, the lower plastic is connected to one side, close to the electric core, of the top cover plate, and the limiting structure extends from the side face of the lower plastic to the direction far away from the lower plastic; the protection film is connected in the top cap subassembly, and the one end that the protection film is close to the top cap piece is equipped with the location opening, and location opening and limit structure are spacing each other, and the protection film cladding is in electric core. Set up limit structure on the top cap subassembly, set up the location opening on the protection film, limit structure and location opening are spacing each other, can prevent that the protection film from stretching out outside the top cap subassembly to take place to explode fire when avoiding casing and top cap subassembly to weld, the protection film is film structure, and the die-cut mode of location opening accessible is processed, and the processing degree of difficulty is lower, can improve the production efficiency of battery.
Description
Technical Field
The application relates to the technical field of power batteries, in particular to a battery and a battery pack.
Background
In the battery, for preventing that electric core and casing contact from causing the short circuit, need at the outside cladding protection film of electric core, the protection film passes through the mode of hot melt and connects in top cap subassembly, but the protection film can stretch out outside top cap subassembly, take place to explode fire when leading to casing and top cap subassembly to weld, and then lead to the battery to scrap, the production yield of battery is lower, in the correlation technique, can set up the concave-convex structure of mutually supporting on top cap subassembly and protection film, thereby realize spacing between the two, nevertheless because the protection film is the film structure, it is all comparatively inconvenient to process arch or sunk structure, production efficiency is lower.
SUMMERY OF THE UTILITY MODEL
The present application is directed to solving at least one of the problems in the prior art. For this reason, this application provides a battery, sets up the limit structure of handling ease on the protection film, can improve production efficiency.
The application also provides a battery pack comprising the battery.
The battery provided by the embodiment of the first aspect of the application comprises a shell, a battery core, a top cover assembly and a protective film, wherein an opening is formed in one end of the shell; the battery core is accommodated in the shell; the top cover assembly is connected to the electric core and comprises a top cover plate, lower plastic and a limiting structure, the lower plastic is connected to one side, close to the electric core, of the top cover plate, the limiting structure is connected to the lower plastic, the limiting structure extends from the side face of the lower plastic to the direction far away from the lower plastic, and the top cover plate covers one end, with an opening, of the shell; the protection film connect in the top cap subassembly, the protection film is close to the one end of top cap piece is equipped with the location opening, the location opening with limit structure is spacing each other, the protection film cladding in electric core, the protection film be located the casing with between the electric core.
The battery provided by the embodiment of the first aspect of the application has at least the following beneficial effects: set up limit structure on the top cap subassembly, set up the location opening on the protection film, limit structure and location opening are spacing each other, can prevent that the protection film from stretching out outside the top cap subassembly to take place to explode fire when avoiding casing and top cap subassembly to weld, the protection film is film structure, and the die-cut mode of location opening accessible is processed, and the processing degree of difficulty is lower, can improve the production efficiency of battery.
In some embodiments of this application, limit structure is provided with a plurality ofly, and is a plurality of limit structure distributes in the week of plastic down, the location opening is provided with a plurality ofly, and is a plurality of the location opening distributes in the protection film is close to in the week of the border of plastic down, and is a plurality of limit structure one-to-one ground and a plurality of the location opening is spacing each other.
In some embodiments of this application, the location opening is close to from the protection film the border of plastic extends to keeping away from down the direction of plastic, limit structure inlays to be located the location opening.
In some embodiments of this application, limit structure includes connecting portion and joint portion, the one end of connecting portion connect in plastic down, the other end of connecting portion connect in joint portion, connecting portion inlay to locate the location opening, joint portion is close to one side of plastic can the butt in the protection film down.
In some embodiments of the present application, the positioning opening is opened at an end of the protective film close to the lower plastic, the positioning opening is a through hole with a circumferential direction being closed, and the limiting structure is inserted into the positioning opening.
In some embodiments of this application, limit structure includes connecting portion and joint portion, the one end of connecting portion connect in plastic down, the other end of connecting portion connect in joint portion, connecting portion wear to locate the location opening, joint portion is close to one side of plastic can the butt in the protection film down. In some embodiments of this application, limit structure includes a plurality of connecting portion and a plurality of joint portion is connected with a plurality of connecting portion one-to-one, and is a plurality of connecting portion with the assembly of joint portion is in around some interval settings on the side of plastic down.
In some embodiments of the present application, the clamping portion has a guiding surface, and the guiding surface extends in a direction close to the central axis of the limiting structure in a direction away from the lower plastic.
In some embodiments of the present application, the limiting structure has an arc-shaped surface, at least a part of the inner wall of the positioning opening is arc-shaped, and the arc-shaped surface can contact with the inner wall of the positioning opening.
The battery pack provided by the embodiment of the second aspect of the present application comprises a box body and the battery provided by any one of the above embodiments, wherein the battery is accommodated in the box body.
The battery pack provided by the embodiment of the second aspect of the present application has at least the following beneficial effects: the limiting structure on the top cover assembly inside the battery is clamped with the positioning opening of the protective film, so that the protective film can be prevented from extending out of the top cover assembly, the fire explosion when the shell and the top cover assembly are welded can be avoided, the production yield of the battery can be improved, and the production efficiency of the battery pack can be improved; the protection film of battery is the film structure, and the location opening accessible is processed in die-cut mode, and the processing degree of difficulty is lower, can improve the production efficiency of battery to improve the production efficiency of battery package.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The present application is further described with reference to the following figures and examples, in which:
fig. 1 is an exploded view of a cap assembly and a protective film of a battery according to some embodiments provided in the first aspect of the present application;
FIG. 2 is an enlarged view taken at A in FIG. 1;
fig. 3 is a schematic view of a position-limiting structure and a positioning opening of a battery according to another embodiment of the first aspect of the present application;
fig. 4 is a schematic view of a position-limiting structure and a positioning opening of a battery according to another embodiment of the first aspect of the present application;
fig. 5 is a schematic view of a position-limiting structure and a positioning opening of a battery according to another embodiment of the first aspect of the present application;
fig. 6 is a schematic view of a position-limiting structure and a positioning opening of a battery according to another embodiment of the first aspect of the present application;
fig. 7 is a schematic view of a position-limiting structure and a positioning opening of a battery according to another embodiment of the first aspect of the present application;
fig. 8 is a schematic view of a position limiting structure and a positioning opening of a battery according to another embodiment of the first aspect of the present application;
FIG. 9 is a front view of the spacing structure shown in FIG. 8;
fig. 10 is a schematic view of a battery position-limiting structure and a positioning opening according to another embodiment of the first aspect of the present application.
Reference numerals:
the top cover assembly 100, the top cover sheet 110, the limiting structure 120, the connecting portion 121, the clamping portion 122, the guide surface 1221, the arc-shaped surface 123, the lower plastic 130, the protective film 200 and the positioning opening 210.
Detailed Description
Reference will now be made in detail to the embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
In the description of the present application, it is to be understood that the positional descriptions referred to, for example, the directions or positional relationships indicated above, below, left, right, etc., are based on the directions or positional relationships shown in the drawings, and are only for convenience of describing the present application and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present application.
In the description of the present application, unless otherwise expressly limited, terms such as set, mounted, connected and the like should be construed broadly, and those skilled in the art can reasonably determine the specific meaning of the terms in the present application by combining the detailed contents of the technical solutions.
Reference throughout this specification to the description of "one embodiment," "some embodiments," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Referring to fig. 1 to 10, a battery provided in an embodiment of the first aspect of the present application includes a casing, a cell, a cap assembly 100, and a protective film 200, where one end of the casing has an opening; the battery core is accommodated in the shell; the top cover assembly 100 is connected to the battery cell, the top cover assembly 100 includes a top cover sheet 110, a limiting structure 120 and a lower plastic 130, the lower plastic 130 is connected to one side of the top cover sheet 110 close to the battery cell, the limiting structure 120 is connected to the lower plastic 130, and the limiting structure 120 extends from the side of the lower plastic 130 to the direction far away from the lower plastic 130; the protection film 200 is connected to the top cap assembly 100, a positioning opening 210 is formed in one end, close to the top cover sheet 110, of the protection film 200, the positioning opening 210 is clamped to the limiting structure 120, and the protection film 200 is coated on the battery cell. After protection film 200 installed to top cap subassembly 100, location opening 210 is spacing each other with limit structure 120, can prevent that protection film 200 upwards drunkenness from leading to protection film 200 to stretch out to top cap subassembly 100's top to take place to explode when preventing that cover plate 110 and casing welding from leading to the battery to scrap. Because the protection film 200 is of a thin film structure, the positioning opening 210 is formed in the protection film 200, and the protection film can be processed in modes of punching and the like, so that the processing difficulty is low, and the production efficiency of the battery can be improved.
It can be understood that the shape of the limiting structure 120 is not limited, and the limiting structure can be set to be a semi-cylindrical shape, a semi-spherical shape, a quarter-spherical shape, a prismatic shape, etc., and can be set according to actual requirements; the shape of the positioning opening 210 is not limited, and may be configured to match the outer contour of the position-limiting structure 120, so as to ensure the stability of the position limitation. The position-limiting structure 120 and the lower plastic 130 can be integrally formed, and the lower plastic 130 is usually formed by injection molding, so that the position-limiting structure 120 and the lower plastic 130 are integrally formed by only modifying the mold of the lower plastic 130, and the production cost is low.
It should be noted that, referring to fig. 1, the plurality of limiting structures 120 may be provided, the plurality of limiting structures 120 are distributed in the circumferential direction of the lower plastic 130, the plurality of positioning openings 210 are also provided, the plurality of positioning openings 210 are distributed in the circumferential direction of the protective film 200 near the edge of the lower plastic 130, the positions of the plurality of limiting structures 120 correspond to the positions of the plurality of positioning openings 210 one to one, and after the protective film 200 is mounted to the top cover assembly 100, the plurality of limiting structures 120 are mutually limited with the plurality of positioning openings 210 in a one to one correspondence. Set up the spacing structure 120 and the location opening 210 that the multiunit was mutually supported, lower plastic 130 can carry on spacingly to a plurality of positions of the ascending circumference of protection film 200 to spacing protection film 200 more steadily prevents that protection film 200 from upwards drunkenness and resulting in protection film 200 to stretch out to the top of top cap subassembly 100.
It can be understood that the distribution manner of the plurality of limiting structures 120 in the circumferential direction of the lower plastic 130 is not limited, and may be set according to actual requirements, for example, referring to fig. 1, the lower plastic 130 has four side surfaces, and may be provided with four limiting structures 120, each limiting structure 120 is correspondingly disposed on one side surface of the lower plastic 130, the edge of the protective film 200 close to the lower plastic 130 has four side edges, the positioning openings 210 are correspondingly provided with four, and each positioning opening 210 is correspondingly disposed on four side surfaces of the protective film 200, so that each group of the limiting structures 120 and the positioning openings 210 which are matched with each other can limit the side surface of the protective film 200 where the positioning opening 210 is located, thereby improving the stability of limiting; in addition, the positions of the position-limiting structures 120 and the positioning openings 210 can be set according to actual requirements, for example, referring to fig. 1, each position-limiting structure 120 is correspondingly disposed on a central axis of one side surface of the lower plastic 130, and each positioning opening 210 is correspondingly disposed on a central axis of the corresponding side surface of the protection film 200, so as to further improve the stability of the position limitation of the lower plastic 130 to the protection film 200.
It should be noted that, referring to fig. 2 to 8 and 10, the limiting structure 120 has an arc-shaped surface 123, at least a part of the inner wall of the positioning opening 210 is arc-shaped, and the arc-shaped surface 123 can contact the inner wall of the positioning opening 210. The arc-shaped positioning opening 210 is smooth in shape, and a position on the inner wall of the positioning opening 210, at which stress concentration is not easy to occur, can be formed, so that the possibility that the protective film 200 is damaged due to the positioning opening 210 can be reduced, and the strength of the protective film 200 can be ensured; set up arcwall face 123 on limit structure 120, can laminate in the arc inner wall of location opening 210, can make limit structure 120 and location opening 210's contact department atress even, improve spacing stability.
In some embodiments, the positioning opening 210 may be a notch formed by extending from the edge of the protection film 200 close to the lower plastic 130 to the direction away from the lower plastic 130, referring to fig. 1 to 4, when the protection film 200 is mounted, the protection film 200 may be moved from bottom to top until the positioning opening 210 abuts against the limiting structure 120, and the protection film 200 is mounted in place. The limiting structure 120 is matched with the positioning opening 210, so that the protective film 200 can be limited to move above the top cover sheet 110, and the protective film 200 is prevented from extending above the top cover sheet 110. The protective film 200 is provided with a positioning opening 210 in the form of a notch, and the positioning opening 210 is aligned with and abutted against the limiting structure 120 during installation, so that the installation process is simple.
The shape of the limiting structure 120 may be set according to actual requirements, and referring to fig. 2, the limiting structure 120 may be set to be a semi-cylindrical shape; referring to fig. 3, the position limiting structure 120 may be provided in a shape of a quarter sphere; other shapes such as cuboid, cone, pyramid and the like can also be set.
Referring to fig. 4, the limiting structure 120 may further include a connecting portion 121 and a clamping portion 122, one end of the connecting portion 121 is connected to the lower plastic 130, the other end of the connecting portion is connected to the clamping portion 122, the connecting portion 121 is embedded in the positioning opening 210, and one side of the clamping portion 122 close to the lower plastic 130 can be abutted against the protective film 200. Above-mentioned limit structure 120 and location opening 210 mutually support, can enough restrict protection film 200 and to the top play of top cover plate 110 to prevent that protection film 200 from stretching out to the top of top cover plate 110, also can realize spacing between limit structure 120 and protection film 200 in limit structure 120's axial is ascending, prevent that protection film 200 breaks away from limit structure 120 in limit structure 120's axial, further improve the fixed stability of protection film 200.
It should be understood that the structural forms of the connecting portion 121 and the clamping portion 122 are not limited to the embodiment shown in fig. 4, and may also be the structural forms shown in fig. 8 and 10, or other structural forms, so as to ensure that the connecting portion 121 can be embedded in the positioning opening 210 and the side of the clamping portion 122 close to the lower plastic 130 can be abutted against the protective film 200.
It can be understood that the positioning opening 210 in the form of a notch is matched with the position-limiting structure 120, and only can play a role of preventing the protective film 200 from moving upwards relative to the top cover sheet 110, so that after the positioning of the position-limiting structure 120 and the positioning opening 210 is completed, the protective film 200 can be fixed on the lower plastic 130 by means of heat melting and the like, and the installation of the protective film 200 is completed.
It should be noted that, referring to fig. 1, the plurality of limiting structures 120 may be disposed, the plurality of limiting structures 120 are disposed in the circumferential direction of the lower plastic 130, the plurality of positioning openings 210 are also disposed in the circumferential direction of the protective film 200 near the edge of the lower plastic 130, the positions of the plurality of limiting structures 120 correspond to the positions of the plurality of positioning openings 210 one to one, and after the protective film 200 is mounted to the top cover assembly 100, the plurality of limiting structures 120 are embedded in the plurality of positioning openings 210 one to one. Set up the spacing structure 120 and the location opening 210 that the multiunit was mutually supported, lower plastic 130 can carry on spacingly to a plurality of positions of the ascending circumference of protection film 200 to spacing protection film 200 more steadily prevents that protection film 200 from upwards drunkenness and resulting in protection film 200 to stretch out to the top of top cap subassembly 100.
It can be understood that the distribution manner of the plurality of limiting structures 120 in the circumferential direction of the lower plastic 130 is not limited, and may be set according to actual requirements, for example, referring to fig. 1, the lower plastic 130 has four side surfaces, and may have four limiting structures 120, each limiting structure 120 is correspondingly disposed on one side surface of the lower plastic 130, the edge of the protective film 200 close to the lower plastic 130 has four side edges, the positioning openings 210 are correspondingly disposed four, and each positioning opening 210 is correspondingly disposed on one side edge of the protective film 200 close to the edge of the lower plastic 130, so that each group of the limiting structures 120 and the positioning openings 210 which are matched with each other can limit the side surface of the protective film 200 where the positioning opening 210 is located, thereby improving the stability of limiting; in addition, the positions of the position-limiting structures 120 and the positioning openings 210 can be set according to actual requirements, for example, referring to fig. 1, each position-limiting structure 120 is correspondingly disposed on a central axis of one side surface of the lower plastic 130, and each positioning opening 210 is correspondingly disposed on a middle point of one side edge of the protective film 200 close to the edge of the lower plastic 130, so as to further improve the stability of the position limitation of the lower plastic 130 to the protective film 200.
In some embodiments, the positioning opening 210 may be a through hole opened at one end of the protection film 200 close to the lower plastic 130, referring to fig. 5 to 8 and 10, when the protection film 200 is mounted, the protection film 200 may be moved from bottom to top, so that the position-limiting structure 120 is inserted into the positioning opening 210, and the protection film 200 is mounted in place. Limiting structure 120 and location opening 210 mutually support, can enough restrict the protection film 200 to the top drunkenness of top cap piece 110 to prevent that protection film 200 from stretching out to the top of top cap piece 110, also can restrict protection film 200 and break away from top cap subassembly 100 downwards, in order to guarantee that protection film 200 can keep apart electric core and casing steadily, consequently, can save the step of being fixed in down plastic 130 with protection film 200 through the hot melt, thereby further improve the production efficiency of battery.
It should be noted that, the plurality of limiting structures 120 may be provided, the plurality of limiting structures 120 are distributed in the circumferential direction of the lower plastic 130, the plurality of positioning openings 210 are also provided, the plurality of positioning openings 210 are distributed in the circumferential direction of the protective film 200 near the end of the lower plastic 130, the positions of the plurality of limiting structures 120 correspond to the positions of the plurality of positioning openings 210 one to one, and after the protective film 200 is mounted to the top cover assembly 100, the plurality of limiting structures 120 are inserted into the plurality of positioning openings 210 one to one. Set up the spacing structure 120 and the location opening 210 that the multiunit was mutually supported, lower plastic 130 can carry on spacingly to a plurality of positions of the ascending circumference of protection film 200 to spacing protection film 200 more stably prevents that protection film 200 from upwards drunkenness and leading to protection film 200 to stretch out to the top cap subassembly 100 top, or protection film 200 drops from plastic 130 down.
It can be understood that the distribution manner of the plurality of limiting structures 120 in the circumferential direction of the lower plastic 130 is not limited, and may be set according to actual requirements, for example, the lower plastic 130 has four side surfaces, and may be provided with four limiting structures 120, each limiting structure 120 is correspondingly disposed on one side surface of the lower plastic 130, the protective film 200 has four side surfaces, four positioning openings 210 are correspondingly disposed, and each positioning opening 210 is correspondingly disposed on one side surface of the protective film 200 near one end of the lower plastic 130, so that each group of the limiting structures 120 and the positioning openings 210 which are matched with each other can limit the side surface of the protective film 200 where the positioning opening 210 is located, thereby improving the stability of limiting; in addition, the positions of the position-limiting structures 120 and the positioning openings 210 can be set according to actual requirements, for example, each position-limiting structure 120 is correspondingly disposed on a central axis of one side surface of the lower plastic 130, and each positioning opening 210 is correspondingly disposed on a central axis of one side surface of the protection film 200, so as to further improve the stability of the position limitation of the lower plastic 130 to the protection film 200.
It should be noted that, referring to fig. 6, the positioning opening 210 may be circular, and the limiting structure 120 is hemispherical, i.e., the spherical surface is the arc-shaped surface 123. Since the circular positioning opening 210 does not have a location on the inner wall of the positioning opening 210 where stress concentration is likely to occur, the possibility of damage to the protective film 200 due to the opening of the positioning opening 210 can be reduced, and the strength of the protective film 200 can be ensured. The limiting structure 120 is hemispherical, on one hand, the arc-shaped surface 123 can be attached to the arc-shaped inner wall of the positioning opening 210, so that the contact position of the limiting structure 120 and the positioning opening 210 can be uniformly stressed, and the limiting stability is improved; on the other hand, the spherical surface of limiting structure 120 can play a guiding role, and protective film 200 is installed to the in-process of lower plastic 130 from bottom to top, and limiting structure 120 easily inserts in location opening 210 to reduce the assembly degree of difficulty, improve production efficiency.
In some embodiments, referring to fig. 7, 8 and 10, the position-limiting structure 120 may include a connecting portion 121 and a clamping portion 122, one end of the connecting portion 121 is connected to the lower plastic 130, the other end of the connecting portion is connected to the clamping portion 122, the connecting portion 121 is disposed through the positioning opening 210, and one side of the clamping portion 122 close to the lower plastic 130 can be abutted against the protective film 200. When the protective film 200 is installed, the protective film 200 can be moved along the direction from bottom to top, so that the limiting structure 120 passes through the positioning opening 210 until the connecting portion 121 penetrates through the positioning opening 210 and one side of the clamping portion 122 close to the lower plastic 130 abuts against the protective film 200, and the protective film 200 is installed in place. Above-mentioned limit structure 120 mutually supports with location opening 210, can enough restrict the protection film 200 to the top drunkenness of top cover piece 110, in order to prevent that protection film 200 from stretching out to the top of top cover piece 110, also can restrict protection film 200 and break away from top cap subassembly 100 downwards, in order to guarantee that protection film 200 can keep apart electric core and casing steadily, can also realize spacing 120 and protection film 200 between limit structure 120 and the protection film 200 in limit structure 120's ascending spacing of axial, prevent that protection film 200 from breaking away from limit structure 120 in limit structure 120's axial, further improve the fixed stability of protection film 200.
Referring to fig. 8, the limiting structure 120 includes a plurality of connecting portions 121 and a plurality of clamping portions 122, the plurality of clamping portions 122 are connected to the plurality of connecting portions 121 in a one-to-one correspondence, referring to fig. 9, the assembly of the plurality of connecting portions 121 and the clamping portions 122 is disposed around a point B on the side surface of the lower plastic 130 at intervals, when the protective film 200 is installed, the positioning opening 210 of the protective film 200 is aligned with the limiting structure 120, and the protective film 200 is pressed toward the lower plastic 130, the assembly of the plurality of connecting portions 121 and the clamping portions 122 is deformed toward the point B until each clamping portion 122 passes through the positioning opening 210, and one side of the clamping portion 122 close to the lower plastic 130 abuts against the protective film 200, so that the installation of the protective film 200 can be completed. Because the assembly of connecting portion 121 and joint portion 122 has certain deformation space, the assembly process is comparatively laborsaving, can improve production efficiency.
Referring to fig. 7, 8 and 10, the locking portion 122 may be provided with a guide surface 1221, and the guide surface 1221 extends in a direction away from the lower plastic 130 and toward a central axis of the limiting structure 120. During installation, the guide surface 1221 can play a guiding role, so that the limiting structure 120 can be inserted into the positioning opening 210 more easily, and the assembling process is more convenient.
It is to be understood that the shape of the guiding surface 1221 is not limited, for example, referring to fig. 7, the guiding surface 1221 may be provided as a spherical surface; referring to fig. 8 and 10, the guiding surface 1221 may be a conical surface; the device can also be arranged into an inclined plane and the like, and can be arranged according to actual requirements.
The battery pack provided by the second aspect of the present application includes a case and the battery provided by any of the above embodiments, and the battery is accommodated in the case. In the battery pack, a battery core limiting part is arranged between the battery core of the battery core and the top cover assembly, and the battery core of the battery core is arranged in a battery core channel in the battery core limiting part in a penetrating manner, so that insulation and limiting are realized; on the other hand, in the production process and the use of battery, electric core locating part homoenergetic provides effectual protection for the electric core of electric core, reduces the emergence that electric core tears, electric core interpolation diaphragm etc. phenomenon, can promote the security and the reliability of battery to improve the security and the reliability of battery package.
The embodiments of the present application have been described in detail with reference to the drawings, but the present application is not limited to the embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present application. Furthermore, the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
Claims (10)
1. A battery, comprising:
a housing having an opening at one end;
the battery cell is accommodated in the shell;
the top cover assembly is connected to the electric core and comprises a top cover plate, lower plastic and a limiting structure, the lower plastic is connected to one side, close to the electric core, of the top cover plate, the limiting structure is connected to the lower plastic, and the limiting structure extends from the side face of the lower plastic to the direction far away from the lower plastic to cover one end, provided with an opening, of the shell;
the protective film is connected with the top cover assembly, one end, close to the top cover plate, of the protective film is provided with a positioning opening, the positioning opening is mutually limited by the limiting structure, the protective film is coated on the battery cell, and the protective film is located between the shell and the battery cell.
2. The battery of claim 1, wherein the plurality of limiting structures are disposed, the plurality of limiting structures are distributed on the periphery of the lower plastic, the plurality of positioning openings are disposed, the plurality of positioning openings are distributed on the periphery of the protective film, which is close to the edge of the lower plastic, and the plurality of limiting structures are mutually limited with the plurality of positioning openings in a one-to-one correspondence manner.
3. The battery of claim 1 or 2, wherein the positioning opening extends from the edge of the protective film close to the lower plastic to the direction far away from the lower plastic, and the limiting structure is embedded in the positioning opening.
4. The battery of claim 3, wherein the limiting structure comprises a connecting portion and a clamping portion, one end of the connecting portion is connected to the lower plastic, the other end of the connecting portion is connected to the clamping portion, the connecting portion is embedded in the positioning opening, and one side of the clamping portion, which is close to the lower plastic, can be abutted against the protective film.
5. The battery of claim 1 or 2, wherein the positioning opening is formed in one end, close to the lower plastic, of the protective film, the positioning opening is a through hole which is circumferentially closed, and the limiting structure is inserted into the positioning opening.
6. The battery of claim 5, wherein the limiting structure comprises a connecting portion and a clamping portion, one end of the connecting portion is connected to the lower plastic, the other end of the connecting portion is connected to the clamping portion, the connecting portion penetrates through the positioning opening, and one side of the clamping portion, which is close to the lower plastic, can abut against the protective film.
7. The battery of claim 6, wherein the limiting structure comprises a plurality of connecting portions and a plurality of clamping portions, the clamping portions are connected with the connecting portions in a one-to-one correspondence manner, and a combination of the connecting portions and the clamping portions is arranged on the side surface of the lower plastic at intervals around a point.
8. The battery of claim 6 or 7, wherein the clamping portion has a guide surface extending in a direction approaching a central axis of the stopper structure in a direction away from the lower plastic.
9. The battery of claim 1, wherein the limiting structure has an arc-shaped surface, at least a portion of the inner wall of the positioning opening is arc-shaped, and the arc-shaped surface can contact the inner wall of the positioning opening.
10. A battery pack, comprising:
a box body;
the battery of any one of claims 1 to 9, housed inside the case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220350025.4U CN217158372U (en) | 2022-02-21 | 2022-02-21 | Battery and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220350025.4U CN217158372U (en) | 2022-02-21 | 2022-02-21 | Battery and battery pack |
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| Publication Number | Publication Date |
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| CN217158372U true CN217158372U (en) | 2022-08-09 |
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| CN202220350025.4U Active CN217158372U (en) | 2022-02-21 | 2022-02-21 | Battery and battery pack |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024040386A1 (en) * | 2022-08-22 | 2024-02-29 | 宁德时代新能源科技股份有限公司 | Battery cell, battery, and electrical device |
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2022
- 2022-02-21 CN CN202220350025.4U patent/CN217158372U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024040386A1 (en) * | 2022-08-22 | 2024-02-29 | 宁德时代新能源科技股份有限公司 | Battery cell, battery, and electrical device |
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Address after: 518000 1-2 Floor, Building A, Xinwangda Industrial Park, No. 18 Tangjianan Road, Gongming Street, Guangming New District, Shenzhen City, Guangdong Province Patentee after: Xinwangda Power Technology Co.,Ltd. Address before: 518000 Xinwangda Industrial Park, No.18, Tangjia south, Gongming street, Guangming New District, Shenzhen City, Guangdong Province Patentee before: SUNWODA ELECTRIC VEHICLE BATTERY Co.,Ltd. |