CN219873751U - Battery cell packaging structure and soft package battery - Google Patents

Abstract

The utility model discloses a battery cell packaging structure and a soft package battery, wherein the battery cell packaging structure comprises a packaged battery cell main body and two packaging folded edges, the battery cell main body comprises a bottom surface, two side surfaces and a top, one ends of the two side surfaces are respectively connected with two ends of the bottom surface, and the other ends of the two side surfaces are respectively connected with two ends of the top; the two packaging folded edges are respectively arranged at two sides of the battery core main body, are coated outside the side surfaces and extend towards the top. According to the utility model, the packaging folded edge is coated outside the side surface of the battery core main body and extends towards the top, and the packaging folded edge is tightly attached to the battery core main body, so that the influence of the packaging folded edge on the width of the battery core main body is small, the influence of the packaging folded edge on the volume and the capacity of the battery core main body is reduced, and the packaging folded edge has no requirement on the height dimension, so that the thickness of the battery core has no requirement, the influence on the thickness of an ultrathin battery core is basically avoided, and the use requirement of the ultrathin battery core is met.

Description

Battery cell packaging structure and soft package battery

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery cell packaging structure and a soft package battery.

Background

When the soft-package battery cell is produced, an electrode is wound and wrapped by an aluminum plastic film, and after electrolyte is poured, edge sealing of the aluminum plastic film is processed, so that edge sealing strength of the aluminum plastic film is enhanced, edge sealing damage of the aluminum plastic film is prevented, meanwhile, the phenomenon that appearance sizes of a plurality of battery cells are inconsistent due to edge folding and tilting of the aluminum plastic film is prevented, and edge folding processing is generally carried out on the soft-package battery cell.

The flanging structure of the traditional soft-package battery core mainly comprises a single flanging structure and a double flanging structure, however, the two structures can only meet the flanging requirement of the battery core with the conventional thickness (more than 3 mm), but for an ultrathin battery core (less than or equal to 2 mm), the double flanging structure has certain requirements on the size of a flanging width and a flanging height, so that the flanging of the double flanging structure is higher, and the thickness of the ultrathin battery core can be greatly influenced; the single folded edge needs to meet the requirements of the size, capacity and effective seal width of the battery cell, and the requirement of the ultrathin battery cell cannot be met.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a battery cell packaging structure and a soft package battery.

The utility model discloses a battery cell packaging structure, which comprises:

the packaged battery cell main body comprises a bottom surface, two side surfaces and a top, wherein one ends of the two side surfaces are respectively connected with two ends of the bottom surface, and the other ends of the two side surfaces are respectively connected with two ends of the top; and

and the two packaging folded edges are respectively arranged at two sides of the battery cell main body, are coated outside the side surfaces and extend towards the top direction.

According to one embodiment of the utility model, the top comprises two cambered surfaces and a pit surface, one ends of the two cambered surfaces are connected with two ends of the pit surface, the other ends of the two cambered surfaces are respectively connected with one ends of two side surfaces, the packaging folded edge comprises a first edge sealing, a second edge sealing and a third edge sealing which are sequentially connected, the first edge sealing is coated outside the side surfaces, the second edge sealing is coated outside the cambered surfaces, and the third edge sealing is arranged on the pit surface.

According to an embodiment of the utility model, the battery cell packaging structure further comprises an adhesion block, one surface of the adhesion block is connected with the pit surface, and the other surface of the adhesion block is connected with the third edge sealing.

According to one embodiment of the utility model, the width of the adhesive block is not less than 0.5mm.

According to one embodiment of the utility model, the distance between the bonding block and the outer edge of the third sealing edge is more than or equal to 0.5mm.

According to an embodiment of the utility model, the length of the adhesive block is not greater than the length of the cell body.

According to one embodiment of the utility model, the length of the package folds is the same as the length of the cell body.

According to one embodiment of the utility model, the thickness of the package flange is 120-160 um.

According to one embodiment of the utility model, the thickness of the cell body is less than or equal to 2mm.

A soft package battery comprises the battery cell packaging structure.

The utility model has the beneficial effects that: through adopting the encapsulation hem cladding outside the side of electric core main part to extend to the direction at top, encapsulation hem and electric core main part laminating are inseparable, make the encapsulation hem less to the width influence of electric core main part, thereby reduced the influence of encapsulation hem to electric core main part volume and capacity, and the encapsulation hem does not have the requirement to the height dimension, therefore also does not have the requirement to the thickness of electric core, can not basically cause the influence to the thickness of ultra-thin electric core, satisfies the user demand of ultra-thin electric core.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:

fig. 1 is a schematic structural diagram of a battery cell package structure in an embodiment;

FIG. 2 is a side view of a cell package structure according to an embodiment;

fig. 3 is an enlarged view of a portion of a structure of a battery cell package according to an embodiment.

Detailed Description

Various embodiments of the utility model are disclosed in the following drawings, in which details of the practice are set forth in the following description for the purpose of clarity. However, it should be understood that these practical details are not to be taken as limiting the utility model. That is, in some embodiments of the utility model, these practical details are unnecessary. Moreover, for the purpose of simplifying the drawings, some conventional structures and components are shown in the drawings in a simplified schematic manner.

It should be noted that all directional indications such as up, down, left, right, front, and rear … … in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture such as that shown in the drawings, and if the particular posture is changed, the directional indication is changed accordingly.

In addition, the descriptions of the "first," "second," and the like, herein are for descriptive purposes only and are not intended to be specifically construed as order or sequence, nor are they intended to limit the utility model solely for distinguishing between components or operations described in the same technical term, but are not to be construed as indicating or implying any relative importance or order of such features. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

For a further understanding of the utility model, its features and advantages, reference is now made to the following examples, which are illustrated in the accompanying drawings in which:

example 1

Referring to fig. 1-3, fig. 1 is a schematic structural diagram of a battery cell package structure in an embodiment, fig. 2 is a side view of the battery cell package structure in an embodiment, and fig. 3 is an enlarged partial structural view of the battery cell package structure in an embodiment. The battery cell packaging structure comprises a packaged battery cell main body 1 and two packaging folded edges 2, wherein the battery cell main body 1 comprises a bottom surface 11, two side surfaces 12 and a top 13, one ends of the two side surfaces 12 are respectively connected with two ends of the bottom surface 11, and the other ends of the two side surfaces 12 are respectively connected with two ends of the top 13; the two packaging folded edges 2 are respectively arranged at two sides of the battery cell main body 1, and the packaging folded edges 2 are coated outside the side surfaces 12 and extend towards the top 13.

Through adopting encapsulation hem 2 cladding outside the side 12 of electric core main part 1 to extend to the direction of top 13, encapsulation hem 2 is inseparable with electric core main part 1 laminating, makes encapsulation hem 2 less to electric core main part's width influence, thereby reduced encapsulation hem 2 to electric core main part 1 volume and capacity's influence, and encapsulation hem 2 limit does not have the requirement to the high size, therefore also does not have the requirement to the thickness of electric core, basically can not be to the influence that the thickness of ultra-thin electric core caused, satisfies ultra-thin electric core's user demand.

Referring back to fig. 1-3, the top 13 includes two cambered surfaces 131 and a pit surface 132, one end of the two cambered surfaces 131 is connected with two ends of the pit surface 132, the other end is connected with one ends of the two side surfaces 12 respectively, the packaging folded edge 2 includes a first edge sealing 21, a second edge sealing 22 and a third edge sealing 23 which are sequentially connected, the first edge sealing 21 is coated outside the side surfaces 12, the width of the first edge sealing 21 is the same as that of the side surfaces 12, the second edge sealing 22 is coated outside the cambered surfaces 131, the second edge sealing 22 is also an arc-shaped edge sealing, the angle of the second edge sealing 22 is the same as that of the cambered surfaces 131, the third edge sealing 23 is arranged on the pit surface 132, and the third edge sealing 23 covers a part, close to the cambered surfaces 131, of the pit surface 132. The first sealing edge 21, the second sealing edge 22 and the third sealing edge 23 are arranged to respectively cover the side face 12, the cambered surface 131 and the pit surface 132, so that the cell packaging structure is subjected to edge folding treatment.

Referring back to fig. 1-3, the length of the packaging folded edge 2 is the same as the length of the battery core main body 1, and the thickness of the packaging folded edge 2 can influence the whole thickness of the soft package battery core, so that the capacity of the soft package battery core is influenced, therefore, the thickness of the packaging folded edge 2 in the utility model is 120-160 um, and in practical application, the packaging folded edge 2 is an aluminum plastic film, and the thickness of the battery core main body 1 is less than or equal to 2mm.

Referring back to fig. 1-3, the cell package structure further includes an adhesive block 3, where one surface of the adhesive block 3 is connected to the pit surface 132, and the other surface is connected to the third seal edge 23. Through setting up bonding piece 3 for encapsulation hem 2 closely laminates on electric core main part 1, prevents that encapsulation hem 2 from leading to great with the clearance between the electric core main part 1 because of the stress effect, leads to the fact the influence to the holistic width and the thickness size of soft packet of electric core. In practical application, the width of the bonding block 3 is more than or equal to 0.5mm, the distance between the bonding block 3 and the outer edge of the third sealing edge 23 is more than or equal to 0.5mm, and the length of the bonding block 3 is not greater than the length of the battery cell main body 1. The outer edge of the third edge seal 23 refers to the edge of the third edge seal 23 that is remote from the second edge seal 22.

Example two

A soft package battery in the present embodiment includes the battery cell package structure in the first embodiment.

To sum up: according to the battery cell packaging structure, the packaging folded edges are coated outside the side face of the battery cell main body and extend towards the top, and the packaging folded edges are tightly attached to the battery cell main body, so that the influence of the packaging folded edges on the width of the battery cell main body is small, the influence of the packaging folded edges on the volume and the capacity of the battery cell main body is reduced, and the packaging folded edges have no requirement on the height dimension, so that the thickness of the battery cell has no requirement, the influence on the thickness of an ultrathin battery cell is basically avoided, and the use requirement of the ultrathin battery cell is met.

The above are merely embodiments of the present utility model, and are not intended to limit the present utility model. Various modifications and variations of the present utility model will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, or the like, which is within the spirit and principles of the present utility model, should be included in the scope of the claims of the present utility model.

Claims (10)

1. The utility model provides a battery cell packaging structure which characterized in that includes:

the packaged battery cell main body (1) comprises a bottom surface (11), two side surfaces (12) and a top (13), wherein one ends of the two side surfaces (12) are respectively connected with two ends of the bottom surface (11), and the other ends of the two side surfaces are respectively connected with two ends of the top (13); and

the two packaging folded edges (2) are respectively arranged at two sides of the battery cell main body (1), and the packaging folded edges (2) are coated outside the side surfaces (12) and extend towards the top (13).

2. The battery cell packaging structure according to claim 1, wherein the top (13) comprises two cambered surfaces (131) and a pit surface (132), one end of each cambered surface (131) is connected with two ends of the pit surface (132), the other end of each cambered surface is connected with one end of each side surface (12), the packaging folded edge (2) comprises a first sealed edge (21), a second sealed edge (22) and a third sealed edge (23) which are sequentially connected, the first sealed edge (21) is coated outside the side surfaces (12), the second sealed edge (22) is coated outside the cambered surfaces (131), and the third sealed edge (23) is arranged on the pit surface (132).

3. The cell packaging structure according to claim 2, further comprising an adhesive block (3), wherein one surface of the adhesive block (3) is connected to the pit surface (132), and the other surface is connected to the third sealing edge (23).

4. A cell package according to claim 3, wherein the width of the adhesive block (3) is not less than 0.5mm.

5. A cell package according to claim 3, wherein the distance between the adhesive block (3) and the outer edge of the third sealing edge (23) is not less than 0.5mm.

6. A cell package according to claim 3, characterized in that the length of the adhesive block (3) is not greater than the length of the cell body (1).

7. The cell packaging structure according to any one of claims 1-6, characterized in that the packaging flange (2) has the same length as the cell body (1).

8. The cell package structure according to claim 1, wherein the thickness of the package flange (2) is 120-160 um.

9. The cell packaging structure according to claim 1, wherein the thickness of the cell body (1) is less than or equal to 2mm.

10. A flexible battery comprising the cell packaging structure of any one of claims 1-9.