Low-cost lithium battery cell waterproof structure
By using a U-shaped shell structure and a labyrinth seal design, the problem of high cost in lithium battery waterproof structures is solved, achieving a low-cost and effective waterproof effect while enhancing the shell strength.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANGZHOU PARKTECH
- Filing Date
- 2025-03-28
- Publication Date
- 2026-04-24
AI Technical Summary
Existing waterproof structures for lithium batteries are costly and lack competitiveness.
It adopts a U-shaped shell structure and houses a lithium battery cell, which is electrically connected through a watertight connector. The upper inner wall of the shell is equipped with a labyrinth structure and is sealed with glue to form a glue layer. The labyrinth structure is integrally molded with the shell to increase strength.
It reduces costs, improves waterproofing, enhances shell strength through its labyrinth structure, prevents water from seeping into gaps, and simplifies the structure.
Smart Images
Figure CN224164312U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lithium battery waterproofing technology, and mainly to a low-cost waterproof structure for lithium battery cells. Background Technology
[0002] Current lithium batteries incorporate multiple waterproofing layers to achieve waterproofing, but this approach suffers from drawbacks: high cost and lack of price competitiveness. Therefore, the problem this invention aims to solve is how to develop a low-cost, high-performance waterproof structure for lithium batteries. Utility Model Content
[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a low-cost waterproof structure for lithium battery cells.
[0004] The purpose of this utility model is achieved through the following technical solution: A low-cost waterproof structure for lithium battery cells, comprising a housing, wherein the housing is a U-shaped structure with an open top, a lithium battery cell is disposed inside the housing, the lithium battery cell is electrically connected to a cable through a watertight connector, a labyrinth structure for sealing is provided on the upper inner wall of the housing, and an adhesive layer is formed by injecting glue into the housing through the open top of the housing.
[0005] Furthermore, the maze structure includes a skeleton A and a skeleton B, which are integrally formed with the shell. Skeleton A is a protrusion formed along the inner wall of the shell, and skeleton B is a bent protrusion formed around the outside of skeleton A.
[0006] Furthermore, the outer two sides of the housing 1 are provided with lugs for connection.
[0007] The beneficial effects of this utility model are as follows:
[0008] 1. The top cover and outer protective structure of the lithium battery are eliminated, and the lithium battery cells and the shell structure without the top cover are used directly, which reduces the cost.
[0009] 2. The sealing problem is solved by using potting compound. A labyrinth structure for sealing is set on the inner wall of the upper part of the shell, so that water will not seep in from any gaps between the potting compound layer and the inner wall of the shell after potting compound.
[0010] 3. The maze structure is integrally molded with the shell, and the maze structure also acts as a reinforcing rib, increasing the strength of the shell itself. Attached Figure Description
[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art or ordinary skills, other drawings can be obtained based on these drawings without creative effort.
[0012] Figure 1 This is the main view of the structure of this utility model.
[0013] Figure 2 for Figure 1 AA sectional view.
[0014] Figure 3 for Figure 2 A magnified view of a portion of the image.
[0015] Figure 4 This is a three-dimensional structural diagram of the present invention.
[0016] Explanation of reference numerals in the attached drawings: 1. Housing, 1-1. Support lug, A1-2. Frame, B1-3. Lithium battery cell, 2. Watertight connector, 3. Cable, 4. Encapsulation layer, 5. Detailed Implementation
[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0018] like Figures 1-4 As shown, a low-cost waterproof structure for a lithium battery cell includes a housing 1, which is a U-shaped structure with an open top. A lithium battery cell 2 is housed inside the housing 1, and connecting lugs 1-1 are provided on both sides of the outer surface of the housing 1. The lithium battery cell 2 is electrically connected to a cable 4 via a watertight connector 3. A labyrinth structure for sealing is provided on the upper inner wall of the housing 1. Adhesive is poured into the housing 1 through the open top to form an adhesive layer 5.
[0019] like Figure 2 , Figure 3The labyrinth structure includes a skeleton A1-2 and a skeleton B1-3, which are integrally formed with the shell 1. Skeleton A1-2 is a protrusion formed along the inner wall of the shell 1, and skeleton B1-3 is a bent protrusion formed around the outside of skeleton A1-2. A labyrinth structure for sealing is provided on the upper inner wall of the shell, preventing water from seeping into any gaps between the glue layer and the inner wall of the shell after the glue is applied. The labyrinth structure is integrally formed with the shell and also acts as a reinforcing rib, increasing the strength of the shell itself.
[0020] During installation, the lithium battery cell is placed inside the U-shaped housing. The U-shaped contour matches the contour of the battery cell for initial positioning, preventing significant displacement during potting.
[0021] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.
Claims
1. A low-cost waterproof structure for a lithium battery cell, characterized by: Includes a housing (1), which is a U-shaped structure with an open top. A lithium battery cell (2) is provided inside the housing (1). The lithium battery cell (2) is electrically connected to a cable (4) through a watertight connector (3). A labyrinth structure for sealing is provided on the upper inner wall of the housing (1). Glue is poured into the housing (1) through the open top of the housing (1) to form a potting layer (5).
2. The low cost lithium battery cell waterproof structure according to claim 1, characterized in that: The maze structure includes a skeleton A (1-2) and a skeleton B (1-3). The skeleton A (1-2) and the skeleton B (1-3) are integrally formed with the shell (1). The skeleton A (1-2) is a protrusion formed along the inner wall of the shell (1), and the skeleton B (1-3) is a bent protrusion formed around the outside of the skeleton A (1-2).
3. The low cost lithium battery cell waterproof structure according to claim 2, characterized in that: The outer sides of the housing (1) are provided with lugs (1-1) for connection.