Battery packaging structure, battery and electric equipment

Abstract

The utility model discloses a battery packaging structure, a battery and electric equipment, the battery packaging structure comprises a top sealing edge and a side sealing edge, the side sealing edge comprises a first main body part and a first extension part located at one end of the first main body part, and the first extension part obliquely extends towards the direction close to the other side sealing edge; the top sealing edge comprises a second main body part and second extension parts located at the two ends of the second main body part, and the second main body part is laid on the end part of the battery cell; the second extension part is connected with the first extension part, so that an accommodating cavity for supporting is defined among the first extension part, the second extension part and the battery cell. The whole containing cavity is similar to a triangle, the structure is stable, deformation is not prone to occurring, and therefore the risk that the side sealing edges are damaged due to external force is reduced; moreover, the first extension part located on the outer side of the battery is equivalent to a chamfer structure of the battery packaging structure, so that mutual interference with adjacent components can be reduced, the actual occupied space of the battery is reduced, and the volume utilization rate of the battery is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and in particular to a battery packaging structure, a battery and an electrical device. Background Art

[0002] With the increasing popularity of digital electronic products, the number of power supplies required for these products is increasing. This, in turn, places increasing demands on lithium batteries: small size, high capacity, and high stability. Existing lithium batteries feature a bent top seal to increase their energy density. However, the bent top seal lacks a protective structure and is prone to interference with adjacent components. To avoid this interference, components must be positioned away from the battery, resulting in a larger battery footprint and lower volume utilization. Utility Model Content

[0003] The embodiments of the present invention provide a battery packaging structure, a battery and an electrical device to solve the problem that the actual space occupied by the battery is large, thereby achieving the effect of improving the volume utilization of the battery.

[0004] Specifically, the present invention provides a battery packaging structure, comprising a top seal and two side seals, wherein the two side seals are located on both sides of the top seal, and the two ends of the top seal are respectively connected to the ends of the side seals to encapsulate the battery cell;

[0005] The side edge seal comprises a first main body portion and a first extension portion located at one end of the first main body portion, wherein the top end of the first extension portion extends obliquely toward the direction approaching the other side edge seal;

[0006] The top sealing edge includes a second main body and second extensions located at both ends of the second main body, the second main body is used to be laid on the end of the battery cell, and the top of the second extension extends obliquely toward the direction close to the first extension; the second extension is connected to the first extension to form a support cavity between the first extension, the second extension and the battery cell.

[0007] Optionally, two ends of the first extension portions of the two side seals are located on the same track, so that the battery packaging structure matches the reserved space of the battery installation position.

[0008] Optionally, the trajectory is one of a circle, an ellipse, a square, and a triangle.

[0009] Optionally, the accommodating cavity is filled with a second supporting block.

[0010] Optionally, the second supporting block is formed by curing epoxy resin.

[0011] Optionally, the battery packaging structure further includes a circuit protection module and a tab, wherein the circuit protection module is arranged on the top of the second main body and located between the two accommodating cavities; the tab is arranged between the second main body and the circuit protection module.

[0012] Optionally, the circuit protection module is arranged parallel to the end face of the battery packaging shell.

[0013] Optionally, a first supporting block is provided at the circuit protection module and the tab.

[0014] Optionally, the first support block is formed by curing resin; the first support block and the second support block are both integrally formed structural parts.

[0015] The present invention further provides a battery, comprising a battery cell and the battery packaging structure as described in any one of the above items, wherein the battery cell is packaged between the top sealing edge and the side sealing edge.

[0016] The utility model also provides an electrical device, comprising the battery as described in any one of the above items.

[0017] The beneficial effects of the present invention are:

[0018] In the battery packaging structure, battery and electrical equipment provided by the present invention, since the inclined first extension portion is connected to the second extension portion, a supporting accommodation cavity is formed, so that the overall accommodation cavity is approximately triangular, the structure is stable and not easy to deform, thereby reducing the risk of damage to the side seal due to external force; and the first extension portion located on the outside of the battery is equivalent to the chamfered structure of the battery packaging structure, which can reduce mutual interference with adjacent components, reduce the actual occupied space of the battery, and thus improve the volume utilization of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0020] Figure 1 This is a schematic partial structural diagram of a battery in one embodiment of the present utility model;

[0021] Figure 2 This is a schematic partial enlarged view of a battery in one embodiment of the present utility model;

[0022] Figure 3 is a schematic partial cross-sectional view of a battery in one embodiment of the present utility model;

[0023] Figure 4 This is a schematic structural diagram of a battery in one embodiment of the present utility model;

[0024] Figure 5 This is a schematic structural diagram of a battery in one embodiment of the present utility model;

[0025] Figure 6 It is a schematic structural diagram of a battery in one embodiment of the present utility model.

[0026] In the figure: 100, battery cell, 200, tab, 210, first connecting piece, 220, second connecting piece, 230, third connecting piece, 300, circuit protection module, 410, first supporting block, 500, top sealing edge, 510, second main body, 520, second extension part, 600, side sealing edge, 610, first main body, 620, first extension part, 710 / 720, circular trajectory. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0028] In the description of the present invention, it should be understood that the terms "longitudinal," "radial," "length," "width," "thickness," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0029] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary, such as by glue injection between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0030] Figure 1This is a schematic partial structural diagram of a battery in one embodiment of the present invention. Figure 1 As shown, and reference Figures 2 to 6 An embodiment of the utility model provides a battery packaging structure, including a battery packaging shell, a circuit protection module 300 and a tab 200, wherein the battery packaging shell is used to encapsulate a battery cell 100; the circuit protection module 300 is arranged at the end of the battery packaging shell, and the tab 200 is arranged between the battery packaging shell and the circuit protection module; along the arrangement direction of the battery packaging shell and the circuit protection module 300, the tab 200 is in a Z-shaped bending structure, and the number of bending edges of the Z-shaped bending structure is not less than three.

[0031] The embodiment of the present invention bends the tab 200 into a Z-shaped bending structure, which has a larger section modulus, higher rigidity and stability than a C-shaped structure or a U-shaped structure, and can play a good connecting role even in large spans and high load conditions, thereby reducing the influence of external forces to improve the overall strength of the battery; and the tab 200 of the Z-shaped bending structure has good flatness, and can be used in a battery to improve the flatness of the battery molding.

[0032] Specifically, the Z-bend's stiffness, stability, and flatness stem from the rigid structure of the two triangles flanking its slope. This triangular shape allows any force applied to any part of the Z-bend to be directly transferred to the other sides, evenly distributing it throughout the structure and maintaining its stability. Therefore, whether the Z-bend is subjected to compression, tension, or torsion, the triangular rigidity of the structure evenly distributes and withstands these forces, maintaining stability.

[0033] like Figure 3 As shown, in one embodiment of the present invention, the number of bending edges of the Z-shaped bending structure is three; the tab 200 includes a first connecting piece 210, a second connecting piece 220, and a third connecting piece 230, and the first connecting piece 210 is laid flat on the end of the battery packaging shell for connecting the battery cell 100; the third connecting piece 230 is connected to the circuit protection module 300 and is arranged parallel to the first connecting piece 210; the second connecting piece 220 is arranged at an angle, and the two ends of the second connecting piece 220 are respectively connected to the first connecting piece 210 and the third connecting piece 230.

[0034] In the embodiment of the present utility model, since the circuit protection module 300 and the battery cell 100 are connected through the tab 200, and the tab 200 is formed by connecting the first connecting piece 210, the second connecting piece 220, and the third connecting piece 230 in sequence, the overall shape is approximately "Z", which not only improves the strength of the tab 200, but also reduces the packaging space occupied by the tab 200, further improving the space utilization of the battery.

[0035] Furthermore, the tab 200 is formed by integral bending and is not connected via any additional connection structure, thereby avoiding usage failures caused by loose connections.

[0036] In one embodiment of the present invention, the circuit protection module 300 is disposed parallel to the end face of the battery packaging shell. In other words, the circuit protection module 300 is disposed parallel to the end face of the battery cell 100. Because the circuit protection module 300 is disposed at one end of the battery cell 100 and parallel to the end face of the battery cell 100, it not only reduces the packaging space occupied by the circuit protection module 300, thereby improving the battery's space utilization, but also better covers the end of the battery, making the end more flat and preventing interference with battery assembly and use.

[0037] like Figure 4 As shown, in one embodiment of the present invention, the battery packaging structure further includes a first support block 410, which is disposed between the circuit protection module 300 and the battery packaging shell. The first support block 410 not only provides support between the battery packaging shell and the circuit protection module 300, preventing the circuit protection module 300 from deformation due to impact, but also protects the tab 200 within the first support block 410, preventing damage to the tab 200 when the battery is impacted.

[0038] Furthermore, the first support block 410 is formed by curing epoxy resin to improve the toughness of the first support block 410 and thereby enhance the impact resistance of the battery. Specifically, the first support block 410 is formed by curing two-component epoxy resin.

[0039] like Figure 2 As shown, in one embodiment of the present invention, the battery packaging shell includes a top seal 500 and a side seal 600. The top seal 500 is located at one end of the battery cell 100, and the side seals 600 are located on both sides of the battery cell 100. The top seal 500 is laid on the end of the battery cell 100, and at least a portion of the top seal 500 is located within the first support block 410. The two ends of the top seal 500 are respectively connected to the ends of the side seals 600 to encapsulate the battery cell 100. The present invention lays the top seal 500 on the end of the battery cell 100, which can save the space occupied by the top seal 500, increase the space occupied by the battery cell 100 in the battery, and thus improve the energy density of the battery. In addition, because part of the top seal 500 is located within the first support block 410, the first support block 410 connects the battery cell 100, the top seal 500, and the circuit protection module 300 into a whole, thereby improving the stability of the battery.

[0040] like Figure 5As shown, in one embodiment of the present invention, the side edge seal 600 includes a first main body 610 and a first extension 620 located at one end of the first main body 610. The first main body 610 is located on one side of the battery cell 100, and the top of the first extension 620 extends obliquely toward the other side edge seal 600. The top edge seal 500 includes a second main body 510 and second extensions 520 located at both ends of the second main body 510. The second main body 510 is laid on the end of the battery cell 100, and the top of the second extension 520 extends obliquely toward the first extension 620. The second extension 520 is connected to the first extension 620 to form a support cavity between the first extension 620, the second extension 520, and the battery cell 100.

[0041] In this embodiment, since the inclined first extension portion 620 is connected to the second extension portion 520, a accommodating cavity for support is formed, so that the accommodating cavity as a whole is approximately triangular, the structure is stable and not easy to deform, thereby reducing the risk of damage to the side seal 600 due to external force; and the first extension portion 620 located on the outside of the battery is equivalent to the chamfered structure of the battery packaging structure, which can reduce mutual interference with adjacent components, reduce the actual occupied space of the battery, and thus improve the volume utilization of the battery.

[0042] In one embodiment of the present invention, both ends of the first extension portion 620 are located on the same track so that the battery packaging structure matches the reserved space of the battery installation position. Specifically, the track is one of a circle, an ellipse, a square, and a triangle.

[0043] Preferably, the track is circular so that the battery can be adapted to a circular electrical device (such as a smart watch with a circular shape), thereby avoiding interference between the first extension portion 620 and other components in the electrical device and improving the volume utilization of the electrical device.

[0044] like Figure 5 As shown, in one embodiment of the present invention, both ends of the first extension portion 620 and the middle of one end of the battery cell 100 away from the top sealing edge 500 are located on the same circular trajectory 710 to accommodate electrical equipment with some side surfaces being arc-shaped.

[0045] like Figure 6As shown, in an alternative embodiment of the present invention, both ends of the first extension portion 620 and the end of the side seal 600 away from the top seal 500 are located on the same circular trajectory 720, so that the battery can be adapted to a circular electrical device (such as a smart watch with a circular shape); and both ends of the first extension portion 620 and the end of the side seal 600 away from the top seal 500 are in contact with the inner wall of the electrical device, forming a limiting effect on the battery.

[0046] In one embodiment of the present invention, the accommodating cavity is filled with a second support block formed by curing a two-component epoxy resin to provide support for the first extension 620 and the second extension 520, thereby preventing damage to the connection between the top sealing edge 500 and the side sealing edge 600 from being squeezed or impacted. The first support block 410 and the second support block are both integrally formed structural components.

[0047] During the preparation of the battery provided by the embodiment of the present invention, the top sealing edge 500 is shaped by a customized molding jig so that the top sealing edge 500 is flush with the battery cell 100; then the circuit protection module 300 is welded to the tab 200, and the tab 200 is bent into a Z shape using a customized jig; finally, an appropriate amount of two-component epoxy resin is injected into the connection between the top sealing edge 500 and the side sealing edge 600 and between the battery cell 100 and the circuit protection module 300 to solidify to form the first support block 410 or the second support block.

[0048] The present invention also provides a battery comprising a battery cell 100 and a battery packaging structure according to any of the above embodiments, so as to have all the effects of the battery packaging structure. The battery cell 100 is packaged within the battery packaging housing; that is, the battery cell 100 is packaged between the top sealing edge 500 and the side sealing edge 600.

[0049] An embodiment of the present invention further provides an electrical device, comprising the battery described in any of the above embodiments, so as to have all the effects of the battery.

[0050] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention, and should all be included in the scope of protection of the present invention.

Claims

1. A battery packaging structure, characterized in that: It comprises a top sealing edge (500) and two side sealing edges (600), wherein the two side sealing edges (600) are located on both sides of the top sealing edge (500), and the two ends of the top sealing edge (500) are respectively connected to the ends of the side sealing edges (600) to encapsulate the battery cell (100); The side sealing edge (600) comprises a first main body portion (610) and a first extension portion (620) located at one end of the first main body portion (610), wherein the top end of the first extension portion (620) extends obliquely in a direction close to the other side sealing edge (600); The top sealing edge (500) comprises a second main body (510) and second extensions (520) located at both ends of the second main body (510), wherein the second main body (510) is used for laying on the end of the battery cell (100), and the top end of the second extension (520) is inclined and extends in a direction close to the first extension (620); the second extension (520) is connected to the first extension (620) to form an accommodating cavity for support between the first extension (620), the second extension (520) and the battery cell (100).

2. The battery packaging structure according to claim 1, characterized in that: The two ends of the first extension portions (620) of the two side sealing edges (600) are located on the same track, so that the battery packaging structure matches the reserved space of the battery to be installed.

3. The battery packaging structure according to claim 2, characterized in that: The trajectory is one of a circle, an ellipse, a square and a triangle.

4. The battery packaging structure according to claim 1, characterized in that: The accommodating cavity is filled with a second supporting block.

5. The battery packaging structure according to claim 4, characterized in that: The second supporting block is formed by curing resin.

6. The battery packaging structure according to claim 5, characterized in that: The battery packaging structure further comprises a circuit protection module (300) and a tab (200); the circuit protection module (300) is arranged on the top of the second main body (510) and is located between the two accommodating cavities; and the tab is arranged between the second main body (510) and the circuit protection module (300).

7. The battery packaging structure according to claim 6, characterized in that: The circuit protection module (300) is arranged parallel to the end surface of the battery packaging shell.

8. The battery packaging structure according to claim 7, characterized in that: A first supporting block (410) is provided at the circuit protection module (300) and the tab.

9. The battery packaging structure according to claim 8, characterized in that: The first support block (410) is formed by curing resin; the first support block (410) and the second support block are both integrally formed structural parts.

10. A battery, characterized in that: Comprising a battery cell (100) and a battery packaging structure according to any one of claims 1 to 9.

11. An electrical device, characterized in that: A battery comprising the battery of claim 10.

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