CN219498087U - Battery cell and battery pack of wrapping film structure - Google Patents
Battery cell and battery pack of wrapping film structure Download PDFInfo
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- CN219498087U CN219498087U CN202320324784.8U CN202320324784U CN219498087U CN 219498087 U CN219498087 U CN 219498087U CN 202320324784 U CN202320324784 U CN 202320324784U CN 219498087 U CN219498087 U CN 219498087U
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- film structure
- edge
- cell body
- wrapping
- battery cell
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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 utility model relates to a battery cell and a battery pack with a wrapping film structure, wherein the battery cell comprises a battery cell body, a first film structure, a second film structure and a third film structure, the first film structure wraps along the peripheral surface of the battery cell body and is in butt joint or superposition end to end, the second film structure and the third film structure are respectively attached to the remaining two oppositely arranged exposed outer surfaces of the battery cell body, the edge of the second film structure is in butt joint or superposition end to end, and the edge of the third film structure is in butt joint or superposition end to end. The battery core of the wrapping film structure can rapidly wrap the battery core body, is of a regular-shaped battery core structure or an irregular-shaped battery core structure, has a simple process, and ensures the insulation and protection performances of the outer surface of the battery core body.
Description
Technical Field
The utility model relates to the technical field of new energy batteries, in particular to an electric core and a battery pack of a wrapping film structure.
Background
In lithium battery production, one of them process is the pad pasting, and the purpose of pad pasting is: the whole lithium battery cell is covered, so that the whole lithium battery cell is worn, on one hand, the insulation of the cell is ensured, the cell and the cell are separated, the influence of various faults of a single cell on other cells is prevented, and the' damage is prevented; on the other hand, the battery cell is better protected in the transportation and circulation processes, so that the dustproof and waterproof effects are achieved. The existing square shell battery cell is regular in structure and very convenient to paste a blue film. Aiming at the battery cells with irregular structures, the battery cells are difficult to be effectively wrapped by adopting the existing film pasting mode.
Disclosure of Invention
The utility model provides a battery cell and a battery pack with a wrapping film structure, which are used for optimizing the wrapping film structure of the battery cell and ensuring the insulation and protection performance of the outer surface of the battery cell.
The technical scheme for solving the technical problems is as follows: the utility model provides a battery core of parcel membrane structure, includes electric core body, first membrane structure, second membrane structure and third membrane structure, first membrane structure is followed the outer peripheral face parcel of electric core body and head and the tail butt joint or coincidence, second membrane structure and third membrane structure are attached respectively on the exposed surface of remaining two relative arrangements of electric core body, the edge of second membrane structure with the edge butt joint or coincidence of first membrane structure, the edge of third membrane structure with the edge butt joint or coincidence of first membrane structure.
The beneficial effects of the utility model are as follows: the battery core of the wrapping film structure can rapidly wrap the battery core body, is of a regular-shaped battery core structure or an irregular-shaped battery core structure, has a simple process, and ensures the insulation and protection performances of the outer surface of the battery core body.
On the basis of the technical scheme, the utility model can be improved as follows.
Further, the battery cell body comprises four side faces which are continuously arranged into a square cylinder shape and two opposite end faces, and the pole of the battery cell body is arranged on the side faces;
the first film structure wraps a circle along four sides of the battery cell body;
the second film structure and the third film structure are respectively attached to two end faces of the battery cell body.
The beneficial effects of adopting the further scheme are as follows: the wrapping mode of the first film structure can form wrapping along four sides of the battery cell body, and then the second film structure and the third film structure are respectively attached to two end faces of the battery cell body, so that a full wrapping mode is formed for the battery cell body.
Further, the edge around at least one terminal surface of electric core body is equipped with the turn-up, the edge extension of first membrane structure forms first parcel limit, first parcel limit extends to the terminal surface and will turn-up parcel is lived.
The beneficial effects of adopting the further scheme are as follows: for the irregular cell body with the everting bead, the everting bead can be wrapped by the first film structure, then the end face is attached and wrapped by the second film structure and the third film structure, the irregular cell body with the everting bead can be wrapped completely rapidly, and the edge of the first film structure can be pressed by the second film structure and the third film structure, so that the battery is not easy to open and lose efficacy.
Further, a first through hole exposing the pole of the battery core body is formed in the first film structure.
The beneficial effects of adopting the further scheme are as follows: the arrangement of the first through hole is convenient for exposing the pole.
Further, the battery cell body comprises four side faces which are continuously arranged into a square cylinder shape and two opposite end faces, and the pole of the battery cell body is arranged on the side faces;
the first film structure wraps a circle along two end surfaces and two side surfaces of the battery cell body;
the second film structure and the third film structure are respectively attached to the remaining two side surfaces of the battery cell body.
The beneficial effects of adopting the further scheme are as follows: the wrapping mode of the first film structure can form wrapping along two side surfaces and two end surfaces of the battery cell body, and then the second film structure and the third film structure are respectively attached to the remaining two opposite side surfaces of the battery cell body, so that a full wrapping mode is formed for the battery cell body.
Further, a circle of outward turning curled edges are arranged at the peripheral edge of one end face of the battery cell body, and the first film structure wraps a part of outward turning curled edges;
the edge of the first film structure extends to form a second wrapping edge, and the second wrapping edge is attached to the inner side surface of the residual part of the everting curled edge or wraps the residual part of the everting curled edge from the inner side surface to the outer side surface.
The beneficial effects of adopting the further scheme are as follows: because the first membrane structure wraps two oppositely arranged everting hems when wrapping a circle, the remaining two everting hems can be partially wrapped or completely wrapped by the first membrane structure, then the side surfaces are attached and wrapped by the second membrane structure and the third membrane structure, the irregular battery cell body with the everting hems can be rapidly and completely wrapped, and the edges of the first membrane structure can be pressed by the second membrane structure and the third membrane structure, so that the battery cell is not easy to lift and lose efficacy.
Further, a circle of outward turning curled edges are arranged at the peripheral edge of one end face of the battery cell body, and the first film structure wraps a part of outward turning curled edges;
the edges of the second film structure and/or the third film structure extend to form a third wrapping edge, and the third wrapping edge is attached to the outer side surface of the remaining part of the everting bead or wraps the remaining part of the everting bead from the outer side surface to the inner side surface.
The beneficial effects of adopting the further scheme are as follows: likewise, because the first membrane structure wraps the two oppositely arranged everting beads when wrapping one circle, the remaining two everting beads are attached and wrapped by the second membrane structure and the third membrane structure, the irregular cell body with the everting beads can be wrapped completely rapidly, and the edges of the first membrane structure can be pressed by the second membrane structure and the third membrane structure, so that the battery is not easy to open and fail.
Further, a second through hole exposing the electrode post of the battery core body is formed in the first film structure and/or the second film structure and/or the third film structure.
The beneficial effects of adopting the further scheme are as follows: the second through hole is arranged, so that the tab is conveniently exposed.
Further, the edge of the first film structure is also provided with four notches exposing four corners of the side surface of the square cylinder.
The beneficial effects of adopting the further scheme are as follows: through setting up the breach, can expose four angles of side of square tube-shape, adopt second membrane structure and third membrane structure again with the attached parcel in four angles, avoid adopting the problem of more folds when first membrane structure parcel angle position to appear.
A battery pack comprises a box body and a plurality of battery cells, wherein the battery cells are stacked in the box body.
The beneficial effects of the utility model are as follows: the battery pack has the advantages that the internal battery cell wrapping process is simple and convenient, and the insulation protection performance of the outer surface of the battery cell is good.
Drawings
Fig. 1 is a schematic perspective view of a battery cell body according to the present utility model;
fig. 2 is a schematic diagram of a split structure of the battery cell body covering the first film structure in embodiment 1;
fig. 3 is a schematic top view of the first film structure of the battery cell body in embodiment 1;
FIG. 4 is a schematic cross-sectional view of A-A of FIG. 3;
FIG. 5 is an enlarged schematic view of the portion C in FIG. 4;
fig. 6 is a schematic perspective view of a first film structure wrapped around a battery cell body in embodiment 1;
fig. 7 is a schematic top view of the first wrapping edge of the battery cell body in embodiment 1;
FIG. 8 is a schematic cross-sectional view of A-A of FIG. 7;
FIG. 9 is an enlarged schematic view of the portion C in FIG. 8;
fig. 10 is a schematic perspective view of the first wrapping edge of the battery cell body in embodiment 1;
fig. 11 is a schematic perspective view of a second film structure attached to the battery cell body in embodiment 1;
fig. 12 is a schematic perspective view of a third film structure attached to the battery cell body in embodiment 1;
fig. 13 is a schematic perspective view of the first film structure in embodiment 2;
fig. 14 is a schematic diagram of a split structure of the battery cell body covering the first film structure in embodiment 2;
fig. 15 is a schematic top view of the first film structure partially covering the battery cell body in embodiment 2;
FIG. 16 is a schematic cross-sectional view of B-B of FIG. 15;
FIG. 17 is an enlarged schematic view of the portion C in FIG. 16;
fig. 18 is a schematic perspective view of the first film structure partially covering the battery cell body in embodiment 2;
fig. 19 is a schematic top view of the first film structure fully covered by the battery cell body in embodiment 2;
FIG. 20 is a schematic cross-sectional view of A-A of FIG. 19;
FIG. 21 is an enlarged schematic view of the portion C in FIG. 20;
fig. 22 is a schematic perspective view of the battery cell body in embodiment 2 completely covering the first film structure;
fig. 23 is a schematic diagram of a split structure of the cell body attached with the second film structure in embodiment 2;
fig. 24 is a schematic top view of the second film structure and the third film structure attached to the battery cell body in embodiment 2;
FIG. 25 is a schematic cross-sectional view of B-B of FIG. 24;
fig. 26 is an enlarged schematic view of the portion C in fig. 25.
In the drawings, the list of components represented by the various numbers is as follows:
1. a cell body; 11. a side surface; 12. an end face; 13. angular position; 14. everting and hemming; 15. a pole;
2. a first membrane structure; 21. a notch; 22. a first wrapping edge;
3. a second membrane structure; 31. a third wrapping edge;
4. a third membrane structure;
5. a first through hole;
6. and a second through hole.
Detailed Description
The principles and features of the present utility model are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the utility model and are not to be construed as limiting the scope of the utility model.
In the following embodiments, the side surfaces 11 of the cell body 1 refer to four narrow sides of the cell body 1, and the end surfaces 12 of the cell body 1 refer to two large surfaces of the cell body 1, as shown in fig. 1.
Example 1
As shown in fig. 1 to 12, a battery cell with a film wrapping structure in this embodiment includes a battery cell body 1, a first film structure 2, a second film structure 3 and a third film structure 4, where the first film structure 2 wraps along the outer peripheral surface of the battery cell body 1 and is abutted or overlapped end to end, the second film structure 3 and the third film structure 4 are respectively attached to the remaining two exposed outer surfaces of the battery cell body 1, which are oppositely arranged, and the edge of the second film structure 3 is abutted or overlapped with the edge of the first film structure 2, and the edge of the third film structure 4 is abutted or overlapped with the edge of the first film structure 2.
As shown in fig. 1, the cell body 1 of the present embodiment includes four side surfaces 11 continuously arranged in a square tube shape and two oppositely arranged end surfaces 12, and the terminal post 15 of the cell body 1 is disposed on the side surfaces 11;
as shown in fig. 2 to 10, the first film structure 2 of the present embodiment wraps around the four sides 11 of the battery cell body 1 for one turn; as shown in fig. 11 and 12, the second film structure 3 and the third film structure 4 of the present embodiment are respectively attached to two end surfaces 12 of the cell body 1. The wrapping mode of the first film structure can form wrapping along four sides of the battery cell body, and then the second film structure and the third film structure are respectively attached to two end faces of the battery cell body, so that a full wrapping mode is formed for the battery cell body.
As shown in fig. 1 and fig. 4 to fig. 6, a circle of outward turned edge 14 is provided on the peripheral edge of at least one end face 12 of the battery cell body 1 in this embodiment, and the edge of the first film structure 2 extends to form a first wrapping edge 22; as shown in fig. 7 to 10, the first wrapping edge 22 of the present embodiment extends toward the end face 12 and wraps the everting bead 14. For the irregular cell body with the everting bead, the everting bead can be wrapped by the first film structure, then the end face is attached and wrapped by the second film structure and the third film structure, the irregular cell body with the everting bead can be wrapped completely rapidly, and the edge of the first film structure can be pressed by the second film structure and the third film structure, so that the battery is not easy to open and lose efficacy.
As shown in fig. 2, the first film structure 2 of the present embodiment is provided with a first through hole 5 exposing the terminal 15 of the battery cell body 1. The arrangement of the first through hole is convenient for exposing the pole.
When the battery core of the wrapping film structure of the embodiment is wrapped, the first film structure can be wrapped first, the second film structure or the third film structure can be wrapped first, the wrapping sequence of the three film structures is arbitrary, the crimping mode is also arbitrary, the second film structure can press the first film structure, the third film structure can press the first film structure, and the first film structure can also press the second film structure or the third film structure.
The battery cell of the wrapping film structure of the embodiment can rapidly wrap the battery cell body, whether the battery cell structure is of a regular shape or an irregular shape, is simple in process, and ensures the insulation and protection performance of the outer surface of the battery cell body.
Example 2
As shown in fig. 13 to 26, a battery cell with a film wrapping structure in this embodiment includes a battery cell body 1, a first film structure 2, a second film structure 3 and a third film structure 4, where the first film structure 2 wraps a circle along an outer surface of the battery cell body 1 and is butted or overlapped end to end, the second film structure 3 and the third film structure 4 are respectively attached to two remaining exposed outer surfaces of the battery cell body 1, which are oppositely arranged, an edge of the second film structure 3 is butted or overlapped with an edge of the first film structure 2, and an edge of the third film structure 4 is butted or overlapped with an edge of the first film structure 2.
As shown in fig. 1, the cell body 1 of the present embodiment includes four side surfaces 11 continuously arranged in a square tube shape and two oppositely arranged end surfaces 12, and the terminal post 15 of the cell body 1 is disposed on the side surfaces 11;
as shown in fig. 14 to 22, the first film structure 2 of the present embodiment wraps one turn along the two end surfaces 12 and the two side surfaces 11 of the battery cell body 1 (the first film structure 2 may wrap the two side surfaces 11 with shorter length of the battery cell body 1 or may wrap the two side surfaces 11 with longer length of the battery cell body 1); as shown in fig. 23 to 26, the second film structure 3 and the third film structure 4 of the present embodiment are respectively attached to the remaining two side surfaces 11 of the cell body 1. The wrapping mode of the first film structure can form wrapping along two side surfaces and two end surfaces of the battery cell body, and then the second film structure and the third film structure are respectively attached to the remaining two opposite side surfaces of the battery cell body, so that a full wrapping mode is formed for the battery cell body.
In this embodiment, a circle of outward turned edge 14 is provided at the peripheral edge of one end face of the battery cell body 1, and the first film structure 2 wraps a part of the outward turned edge 14; the edge extension of the first film structure 2 forms a second wrapping edge, the second wrapping edge is attached to the inner side surface of the remaining part of the everting curled edge 14, and then when the second film structure 3 and the third film structure 4 are attached, the edge extension of the second film structure 3 and the third film structure wraps the outer side surface of the everting curled edge 14 and is abutted with or pressed against the second wrapping edge of the first film structure 2. Because the first membrane structure wraps two oppositely arranged everting hems when wrapping a circle, the remaining two everting hems can be partially wrapped by the first membrane structure, then the side faces are attached and wrapped by the second membrane structure and the third membrane structure, the irregular cell body with the everting hems can be wrapped completely rapidly, and the edges of the first membrane structure can be pressed by the second membrane structure and the third membrane structure, so that the battery is not easy to open and fail.
The first film structure 2 and/or the second film structure 3 and/or the third film structure 4 in this embodiment are provided with a second through hole 6 exposing the terminal 15 of the cell body 1. The second through hole is arranged, so that the tab is conveniently exposed. Fig. 23 shows an arrangement for providing the second membrane structure 3 with the second through holes 6.
As shown in fig. 13 and 14, the edge of the first film structure 2 in this embodiment is further provided with four notches 21 exposing four corners 13 of the square-shaped side 11, and the four corners 13 are attached by the second film structure 3 and the third film structure 4. Through setting up the breach, can expose four angles of side of square tube-shape, adopt second membrane structure and third membrane structure again with the attached parcel in four angles, avoid adopting the problem of more folds when first membrane structure parcel angle position to appear.
When the battery core of the wrapping film structure of the embodiment is wrapped, the first film structure can be wrapped first, the second film structure or the third film structure can be wrapped first, the wrapping sequence of the three film structures is arbitrary, the crimping mode is also arbitrary, the second film structure can press the first film structure, the third film structure can press the first film structure, and the first film structure can also press the second film structure or the third film structure.
The battery cell of the wrapping film structure of the embodiment can rapidly wrap the battery cell body, whether the battery cell structure is of a regular shape or an irregular shape, is simple in process, and ensures the insulation and protection performance of the outer surface of the battery cell body.
Example 3
Unlike embodiment 2, the edge of the first film structure 2 is extended to form a second wrapping edge, and the second wrapping edge wraps the remaining portion of the everting bead 14 from the inner side surface to the outer side surface, and then when the second film structure 3 and the third film structure 4 are attached, the edge of the second film structure 3 and the third film structure may be extended to butt against the second wrapping edge of the first film structure 2 or press the second wrapping edge. The remainder was the same as in example 2.
Example 4
As shown in fig. 23 to 26, a circle of outward turned edge 14 is provided on the peripheral edge of one end face 12 of the battery cell body 1 in this embodiment, and the first film structure 2 wraps a part of the outward turned edge 14; unlike example 2, the edge extension of the second film structure 3 and/or the third film structure 4 forms a third wrapping edge 31, and the third wrapping edge 31 is attached to the outer side surface of the remaining portion of the everting bead 14, and the edge extension of the first film structure 2 wraps the inner side surface of the everting bead 14 and is abutted against or pressed by the third wrapping edge. The remainder was the same as in example 2.
Example 5
Unlike example 4, the edges of the second film structure 3 and/or the third film structure 4 in this example extend to form a third wrapping edge 31, and the third wrapping edge 31 wraps the remaining portion of the everting bead 14 from the outer side surface to the inner side surface, and the third wrapping edge 31 abuts or presses the edge of the first film structure. The remainder was the same as in example 4.
Example 6
A battery pack of this embodiment includes a case and a plurality of cells described in embodiment 1 or embodiment 2 or embodiment 3 or embodiment 4 or embodiment 5, and a plurality of cells are stacked in the case. The battery pack of the embodiment has the advantages that the internal battery cell wrapping process is simple and convenient, and the insulation protection performance of the outer surface of the battery cell is good.
In the description of the present utility model, it should be understood that the terms "length," "width," "inner," "outer," "circumferential," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., 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 utility model. In this specification, schematic representations of the above terms are not necessarily directed 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. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.
Claims (10)
1. The utility model provides a battery core of parcel membrane structure, its characterized in that, includes electric core body (1), first membrane structure (2), second membrane structure (3) and third membrane structure (4), first membrane structure (2) are followed the outer peripheral face parcel of electric core body (1) and head and the tail butt joint or coincidence, second membrane structure (3) and third membrane structure (4) are attached respectively on the remaining two exposed surface of relative arrangement of electric core body (1), the edge of second membrane structure (3) with the edge butt joint or coincidence of first membrane structure (2), the edge of third membrane structure (4) with the edge butt joint or coincidence of first membrane structure (2).
2. The cell of a film-wrapping structure according to claim 1, characterized in that the cell body (1) comprises four side faces (11) arranged in succession in a square cylinder and two oppositely arranged end faces (12), the poles (15) of the cell body (1) being arranged on the side faces (11);
the first film structure (2) wraps a circle along four side surfaces (11) of the battery cell body (1);
the second film structure (3) and the third film structure (4) are respectively attached to two end faces (12) of the battery cell body (1).
3. The cell of a wrapping film structure according to claim 2, wherein an everting bead (14) is arranged at the peripheral edge of at least one end face (12) of the cell body (1), the edge of the first film structure (2) extends to form a first wrapping edge (22), and the first wrapping edge (22) extends to the end face and wraps the everting bead (14).
4. The cell of a packaging film structure according to claim 2, wherein the first film structure (2) is provided with a first through hole (5) exposing a terminal (15) of the cell body (1).
5. The cell of a film-wrapping structure according to claim 1, characterized in that the cell body (1) comprises four side faces (11) arranged in succession in a square cylinder and two oppositely arranged end faces (12), the poles (15) of the cell body (1) being arranged on the side faces (11);
the first film structure (2) wraps a circle along two end faces (12) and two side faces (11) of the battery cell body (1);
the second film structure (3) and the third film structure (4) are respectively attached to the remaining two side surfaces (11) of the battery cell body (1).
6. The cell of a wrapping film structure according to claim 5, wherein a circle of eversion curls (14) is arranged at the peripheral edge of one end face (12) of the cell body (1), and the first film structure (2) wraps a part of eversion curls (14);
the edges of the first film structure (2) extend to form a second wrapping edge which is attached to the inner side surface of the remaining part of the everting bead (14) or wraps the remaining part of the everting bead (14) from the inner side surface to the outer side surface.
7. The cell of a wrapping film structure according to claim 5, wherein a circle of eversion curls (14) is arranged at the peripheral edge of one end face (12) of the cell body (1), and the first film structure (2) wraps a part of eversion curls (14);
the edges of the second film structure (3) and/or the third film structure (4) extend to form a third wrapping edge (31), and the third wrapping edge (31) is attached to the outer side surface of the residual part of the eversion curled edge (14) or wraps the residual part of the eversion curled edge (14) from the outer side surface to the inner side surface.
8. The cell of claim 5, wherein the first film structure (2) and/or the second film structure (3) and/or the third film structure (4) are provided with a second through hole (6) exposing the terminal (15) of the cell body (1).
9. The cell of claim 5, wherein the edge of the first film structure (2) is further provided with four notches (21) exposing four corners of the square-cylinder-shaped side surface (11).
10. A battery pack comprising a case and a plurality of the cells of any one of claims 1 to 9, a plurality of the cells being stacked in the case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320324784.8U CN219498087U (en) | 2023-02-27 | 2023-02-27 | Battery cell and battery pack of wrapping film structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320324784.8U CN219498087U (en) | 2023-02-27 | 2023-02-27 | Battery cell and battery pack of wrapping film structure |
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| Publication Number | Publication Date |
|---|---|
| CN219498087U true CN219498087U (en) | 2023-08-08 |
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| CN202320324784.8U Active CN219498087U (en) | 2023-02-27 | 2023-02-27 | Battery cell and battery pack of wrapping film structure |
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| CN (1) | CN219498087U (en) |
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- 2023-02-27 CN CN202320324784.8U patent/CN219498087U/en active Active
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