A quick-charging polymer lithium battery with a waterproof structure

Abstract

The utility model relates to a kind of fast-charging polymer lithium batteries with waterproof structure, including battery main body and waterproof part;The battery main body includes top surface, and the first surface and the second surface located in the opposite sides of the top surface, and the top surface is equipped with connecting assembly;The waterproof part includes end face, two first side surfaces oppositely arranged along the length direction of the end face, and two second side surfaces oppositely arranged along the width direction of the end face, and the end face, two first side surfaces and two second side surfaces jointly enclose accommodating space;Two second side surfaces respectively extend to form extension part, and two extension parts are respectively connected with the first surface and the second surface of the battery main body and the first surface and the second surface, so that the waterproof part is covered on the top surface, and the connecting assembly is housed in the accommodating space.The utility model is compact and reasonable in structure, can effectively place liquid infiltration, and improve the safety of product.

Description

Technical Field

[0001] This utility model relates to the field of batteries, and more specifically, to a fast-charging polymer lithium battery with a waterproof structure. Background Technology

[0002] Polymer lithium batteries, due to their high energy density and safety advantages, have shown broad application prospects in electric vehicles, energy storage devices, and portable electronic devices. However, the electrode connection components (such as terminals and plugs) on their top surface are susceptible to corrosion in humid or liquid-immersed environments, leading to electrical failures and even safety hazards. Traditional waterproofing solutions generally employ either integral potting or partial sealing ring structures. The former sacrifices maintainability and increases weight, while the latter relies on a single planar seal, which is difficult to effectively prevent liquid infiltration. Utility Model Content

[0003] The purpose of this invention is to provide a fast-charging polymer lithium battery with a waterproof structure. Its structure is compact and reasonable, which can effectively prevent liquid infiltration and improve product safety.

[0004] A fast-charging polymer lithium battery with a waterproof structure includes a battery body and a waterproof component;

[0005] The battery body includes a top surface, and a first surface and a second surface located on opposite sides of the top surface, and the top surface is provided with a connecting component;

[0006] The waterproof component includes an end face, two first side faces arranged opposite each other along the length direction of the end face, and two second side faces arranged opposite each other along the width direction of the end face, wherein the end face, the two first side faces, and the two second side faces together form an accommodating space;

[0007] The two second sides extend to form extensions, and the two extensions are respectively connected to the first surface and the second surface of the battery body, so that the waterproof component is covered on the top surface and the connecting assembly is housed in the accommodating space.

[0008] In the above technical solution, a fully enclosed protective space is formed on the top surface through the cooperative structure of the battery body and the waterproof component. The waterproof component, together with its end face and four side faces, forms a closed accommodating space. The extension portion extending from its second side directly connects to the two side surfaces of the battery, making the waterproof component a stable cover structure. This design completely isolates the connecting components from the external environment, achieves sealing through the close fit between the extension portion and the battery surface, and blocks the intrusion of liquid from the top and sides through a three-dimensional enclosed structure, creating an effective waterproof barrier while maintaining structural compactness.

[0009] Furthermore, the connecting component includes at least one connecting portion, the end face of which has an opening corresponding to the connecting portion, and the connecting portion extends from the opening to the outside of the accommodating space.

[0010] In the above technical solution, an opening matching the connecting part is made on the end face, allowing the connecting part to extend outward and maintain functional external connection. This structure provides a channel for external circuit connection while maintaining the overall enclosure of the accommodating space, thus meeting electrical connection requirements.

[0011] Furthermore, sealing portions are provided on both sides of the opening. When the connecting portion extends out of the opening, the sealing portions are attached to the surface of the connecting portion to close the opening.

[0012] In the above technical solution, when the connecting part passes through the opening, the sealing part is tightly attached to its surface to seal the opening, thus ensuring the waterproof performance of the opening while allowing the connecting part to extend.

[0013] Furthermore, the length of the sealing portion is greater than the length of the opening.

[0014] In the above technical solution, the design of extending the length of the sealing part beyond the opening boundary can further improve the sealing effect and stability.

[0015] Furthermore, the connection assembly also includes a tab and a protection plate. The tab is electrically connected to the battery cell body and the protection plate, and both the tab and the protection plate are housed within the accommodating space.

[0016] In the above technical solution, the electrode tabs and protection board are built into the housing space, achieving integrated electrical module and waterproof structure. This layout eliminates the need for external wiring, avoids adding independent sealing structures to the battery body surface, simplifies the assembly process, and reduces the risk of multi-point seal failure by centrally protecting key conductive components through a unified waterproof space.

[0017] Furthermore, the two second sides abut against the top surface.

[0018] In the above technical solution, the second side abutting against the top surface can enhance the overall structural stability of the waterproof component.

[0019] Furthermore, the extended portion is provided with an adhesive layer.

[0020] In the above technical solution, the extended portion is connected to the first and second surfaces through an adhesive layer, which ensures the stability of the connection while facilitating assembly.

[0021] Furthermore, the waterproof component is made of waterproof material.

[0022] Compared with existing technologies, the beneficial effects of this utility model are as follows: Through the cooperative structure of the battery body and the waterproof component, a fully enclosed protective space is formed on the top surface. The waterproof component, with its end face and four side faces forming a closed accommodating space, has an extension portion extending from its second side that directly connects to the two side surfaces of the battery, thus forming a stable cover structure. This design completely isolates the connecting components from the external environment, achieving a seal through the close fit between the extension portion and the battery surface. Simultaneously, the three-dimensional enclosed structure blocks liquid intrusion from the top and sides, creating an effective waterproof barrier while maintaining structural compactness. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a fast-charging polymer lithium battery with a waterproof structure according to an embodiment of the present invention.

[0024] Figure 2 for Figure 1 A magnified view of part A in the diagram.

[0025] Figure 3 This is a cross-sectional structural diagram of the waterproof component and the connecting structure according to an embodiment of the present utility model.

[0026] Explanation of icon numbers:

[0027] Battery body 1, top surface 11, first surface 12, second surface 13, connecting assembly 14, connecting part 141, electrode tab 142, protection plate 143, waterproof component 2, end face 21, first side face 22, second side face 23, extension part 231, adhesive layer 232, opening 24, sealing part 25. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0030] Please refer to Figures 1 to 3In a preferred embodiment, the fast-charging polymer lithium battery with a waterproof structure of the present invention includes a battery body 1 and a waterproof component 2. The battery body 1 includes a top surface 11, and a first surface 12 and a second surface 13 located on opposite sides of the top surface 11. The top surface 11 is provided with a connecting assembly 14. The waterproof component 2 includes an end face 21, two first side faces 22 arranged opposite each other along the length direction of the end face 21, and two second side faces 23 arranged opposite each other along the width direction of the end face 21. The end face 21, the two first side faces 22, and the two second side faces 23 together form an accommodating space. The two second side faces 23 respectively extend to form extension portions 231, and the two extension portions 231 are respectively connected to and attached to the first surface 12 and the second surface 13 of the battery body 1, so that the waterproof component 2 covers the top surface 11 and accommodates the connecting assembly 14 within the accommodating space.

[0031] In this embodiment, the waterproof component 2 is made of existing waterproof materials. Through the mating structure of the battery body 1 and the waterproof component 2, a fully enclosed protective space is formed on the top surface 11. The waterproof component 2, with its end face 21 and four side faces, forms a closed accommodating space. The extension 231 extending from its second side 23 is directly connected to the two side surfaces of the battery, making the waterproof component 2 a stable cover structure. This design completely isolates the connecting assembly 14 from the external environment, achieves sealing by adhering to the battery surface with the extension 231, and blocks liquid intrusion from the top and sides through the three-dimensional enclosure structure, creating an effective waterproof barrier while maintaining structural compactness.

[0032] Please refer to Figure 3 The connecting component 14 includes at least one connecting portion 141, and an opening 24 is provided on the end face 21 corresponding to the connecting portion 141. The connecting portion 141 extends from the opening 24 to the outside of the accommodating space. The opening 24 on the end face 21, matching the connecting portion 141, allows the connecting portion 141 to extend outward and maintain functional external connection. This structure provides a channel for external circuit connection while maintaining the overall enclosure of the accommodating space, thus meeting electrical connection requirements.

[0033] Sealing portions 25 are provided on both sides of the opening 24. When the connecting portion 141 extends out of the opening 24, the sealing portions 25 are attached to the surface of the connecting portion 141 to close the opening 24. For example, the side of the sealing portion 25 facing the connecting portion 141 is bonded to the connecting portion 141 with double-sided tape or adhesive, thereby sealing the opening 24. When the connecting portion 141 passes through the opening 24, the sealing portion 25 tightly adheres to its surface, thus sealing the opening 24, ensuring waterproof performance at the opening 24 while allowing the connecting portion 141 to extend. In this embodiment, the length of the sealing portion 25 is greater than the length of the opening 24. This extension design of the sealing portion 25 beyond the boundary of the opening 24 further improves the sealing effect and stability.

[0034] The connecting assembly 14 also includes tabs 142 and a protection plate 143. Tabs 142 are electrically connected to the cell body and the protection plate 143, and both tabs 142 and the protection plate 143 are housed within an accommodating space. By integrating tabs 142 and the protection plate 143 into the accommodating space, the electrical module and waterproof structure are integrated into a single unit. This layout eliminates the need for external wiring, avoids the need for an additional independent sealing structure on the surface of the battery body 1, simplifies the assembly process, and reduces the risk of multi-point seal failure by centrally protecting key conductive components through a unified waterproof space.

[0035] In this embodiment, the two second side surfaces 23 abut against the top surface 11. The abutment between the second side surfaces 23 and the top surface 11 enhances the overall structural stability of the waterproof component 2.

[0036] The extension portion 231 is provided with an adhesive layer 232. The extension portion 231 is connected to the first surface 12 and the second surface 13 through the adhesive layer 232, which facilitates assembly while ensuring the stability of the connection.

[0037] In the description of this utility model, it should be understood that terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fast-charging polymer lithium battery with a waterproof structure, characterized in that, Includes the battery body and waterproof components; The battery body includes a top surface, and a first surface and a second surface located on opposite sides of the top surface, and the top surface is provided with a connecting component; The waterproof component includes an end face, two first side faces arranged opposite each other along the length direction of the end face, and two second side faces arranged opposite each other along the width direction of the end face, wherein the end face, the two first side faces, and the two second side faces together form an accommodating space; The two second sides extend to form extensions, and the two extensions are respectively connected to the first surface and the second surface of the battery body, so that the waterproof component is covered on the top surface and the connecting assembly is housed in the accommodating space.

2. The fast-charging polymer lithium battery with a waterproof structure according to claim 1, characterized in that, The connecting component includes at least one connecting portion, the end face of which has an opening corresponding to the connecting portion, and the connecting portion extends from the opening to the outside of the accommodating space.

3. The fast-charging polymer lithium battery with a waterproof structure according to claim 2, characterized in that, The opening is provided with sealing parts on both sides. When the connecting part extends out of the opening, the sealing parts are attached to the surface of the connecting part to close the opening.

4. The fast-charging polymer lithium battery with a waterproof structure according to claim 3, characterized in that, The length of the sealing part is greater than the length of the opening.

5. The fast-charging polymer lithium battery with a waterproof structure according to claim 2, characterized in that, The connection assembly also includes tabs and a protection plate. The tabs are electrically connected to the battery body and the protection plate, and both the tabs and the protection plate are housed within the accommodating space.

6. The fast-charging polymer lithium battery with a waterproof structure according to claim 1, characterized in that, The two second sides abut against the top surface.

7. The fast-charging polymer lithium battery with a waterproof structure according to claim 1, characterized in that, The extension portion is provided with an adhesive layer.

8. The fast-charging polymer lithium battery with a waterproof structure according to claim 1, characterized in that, The waterproof component is made of waterproof material.

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