Battery pack with waterproof structure

Abstract

The battery pack with the waterproof structure comprises an upper cover, a lower shell, a battery module and a waterproof support, the battery module is arranged in the lower shell in a matched mode, the waterproof support is arranged on the top of the battery module in a matched mode, and a gap is reserved between the outer side face of the waterproof support and the inner wall of the lower shell. The dispensing groove of the waterproof support, the platform structure portion of the waterproof support and a gap between the outer side face of the waterproof support and the inner wall of the lower shell are filled with waterproof glue, the upper cover is sleeved in the opening portion of the lower shell in a matched mode, the bottom of the upper cover is clamped in the dispensing groove of the waterproof support, and the upper cover and the lower shell are fixed together. The waterproof LED lamp is simple in structure, convenient to manufacture, low in cost and good in waterproof performance.

Description

Technical Field

[0001] The utility model relates to a battery pack with a waterproof structure. Background Art

[0002] With the rapid development of demand for batteries (including single batteries, battery packs, etc.), their functions are becoming more and more diversified. Along with the development of diversified functions, the requirements for battery safety are also getting higher and higher, but the waterproof performance of batteries has not been greatly improved. The lack of waterproof performance of batteries may lead to a decrease in the life of the battery cells, and in severe cases may cause short circuits, or even fire and explosion. In order to meet application requirements, most of the solutions on the market are to add sealing rings or to fix the shell with glue. In the former operation mode, the sealing ring is prone to aging and failure, while the latter operation mode is more complicated and difficult to control and has poor waterproof effect. Utility Model Content

[0003] The utility model aims to provide a battery pack with a waterproof structure which has simple structure, convenient manufacturing, low cost and good waterproof performance.

[0004] The utility model is realized by the following scheme:

[0005] A battery pack with a waterproof structure comprises an upper cover, a lower shell, a battery module and a waterproof bracket, wherein the waterproof bracket is an internally hollow frame structure, a circle of glue-dispensing grooves is provided on the top of the waterproof bracket, the top of the waterproof bracket is arranged as a platform structure from the outer edge to the outer side wall of the glue-dispensing groove, and the top surface of the platform structure part is lower than the top surface of the outer side wall of the glue-dispensing groove, the battery module is matched to be loaded into the lower shell, the waterproof bracket is matched to be installed on the top of the battery module, and a gap is left between the outer side surface of the waterproof bracket and the inner wall of the lower shell, the glue-dispensing groove of the waterproof bracket, the platform structure part of the waterproof bracket and the gap between the outer side surface of the waterproof bracket and the inner wall of the lower shell are all filled with waterproof glue, the upper cover is matched to be mounted in the mouth of the lower shell, and the bottom of the upper cover is clamped in the glue-dispensing groove of the waterproof bracket, and the upper cover and the lower shell are fixed together. The shape and size of the waterproof bracket can be designed according to the shape and size of the top of the battery module, so that when the waterproof bracket is installed on the top of the battery module, all components on the top of the battery module are placed in the hollow part of the waterproof bracket, ensuring that the installation of the waterproof bracket will not affect the normal use of the battery module. The shape of the waterproof bracket can be designed to have a square or circular cross section, and the cross section of the top of the battery module is mostly square, so the shape of the waterproof bracket is mostly designed to have a square cross section.

[0006] Furthermore, a circle of baffles is provided at the top of the waterproof bracket near the inner edge. The size and shape of the baffles can be adjusted and designed as needed. The provision of the baffles can prevent the waterproof glue from flowing to the components on the top of the battery module and affecting the performance and use of the battery module.

[0007] Furthermore, the height of the outer side wall of the glue-dispensing groove of the waterproof bracket is lower than the height of the inner side wall of the glue-dispensing groove.

[0008] Furthermore, the outer ring size of the waterproof bracket gradually increases from the top to the bottom. Such an arrangement can ensure that the gap between the outer side surface of the waterproof bracket and the inner wall of the lower shell gradually decreases from top to bottom.

[0009] The battery pack with a waterproof structure of the utility model has a simple structure, simple manufacture and low cost. The provision of a waterproof bracket can facilitate the injection of waterproof glue and can well meet the waterproof requirements of the battery pack, so that the entire battery pack with a waterproof structure has good waterproof performance and a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the overall structure of a battery pack with a waterproof structure in Example 1;

[0011] Figure 2 This is a schematic diagram of the structure of the battery pack with a waterproof structure in Example 1 without the upper cover;

[0012] FIG3( a ) is a schematic structural diagram of a waterproof bracket in Example 1;

[0013] FIG3( b ) is a partial enlarged view of portion A in FIG3( a ). DETAILED DESCRIPTION

[0014] The embodiments are only intended to illustrate one implementation of the present invention and are not intended to limit the protection scope of the present invention.

[0015] Example 1

[0016] A battery pack with a waterproof structure, such as Figure 1 , Figure 2As shown, it includes an upper cover 1, a lower shell 2, a battery module 3 and a waterproof bracket 4. The cross-section of the top of the battery module 3 of this embodiment is square. As shown in Figure 3(a) and Figure 3(b), the waterproof bracket 4 is a frame structure with a hollow interior and a square cross-section. The outer ring size of the waterproof bracket 4 gradually increases from the top to the bottom. A circle of glue-dispensing grooves 41 are provided on the top of the waterproof bracket 4. The top of the waterproof bracket 4 is set to a platform structure from the outer edge to the outer side wall of the glue-dispensing groove, and the top surface of the platform structure part is lower than the top surface of the outer side wall of the glue-dispensing groove 41. A circle of baffles 4 are provided at the top of the waterproof bracket 4 near the inner edge. 2, the battery module 3 is matched and installed in the lower shell 2, the waterproof bracket 4 is matched and installed on the top of the battery module 3 and a gap is left between the outer side surface of the waterproof bracket 4 and the inner wall of the lower shell 2, the gap between the outer side surface of the waterproof bracket 4 and the inner wall of the lower shell 2 gradually decreases from top to bottom, the glue dispensing groove 41 of the waterproof bracket 4, the platform structure part of the waterproof bracket 4 and the gap between the outer side surface of the waterproof bracket 4 and the inner wall of the lower shell 2 are all filled with waterproof glue (the waterproof glue is not shown in the figure), the upper cover 1 is matched and installed in the mouth of the lower shell 2 and the bottom of the upper cover 1 is clamped in the glue dispensing groove 41 of the waterproof bracket 4, and the upper cover 1 and the lower shell 2 are fixed together.

[0017] During production, the waterproof bracket is installed on the top of the battery module to form a battery module assembly. At this time, it is ensured that all components on the top of the battery module are placed in the hollow part of the waterproof bracket, so as to ensure that all components on the top of the battery module, such as the positive lead-in terminal and the negative lead-in terminal of the battery module, are connected one by one with the positive terminal and the negative terminal corresponding to the upper cover. Then, the battery module assembly is installed in the lower shell and pressed to the bottom of the lower shell. At this time, it is ensured that there is a gap between the outer side surface of the waterproof bracket and the inner wall of the lower shell and the gap gradually decreases from top to bottom. Then, waterproof glue is injected into the glue dispensing groove of the waterproof bracket until the waterproof glue overflows from the glue dispensing groove and passes through the waterproof bracket. The platform structure part of the frame flows into the gap left between the outer side surface of the waterproof bracket and the inner wall of the lower shell body. After the gap left between the outer side surface of the waterproof bracket and the inner wall of the lower shell body is filled with waterproof glue, the filling of waterproof glue is stopped, and the terminals on the upper cover, such as the positive terminal, the negative terminal, etc., are connected one by one with the positive lead-in terminal, the negative lead-in terminal, etc. of the battery module. Before the waterproof glue in the glue dispensing groove of the waterproof bracket dries, the upper cover is matched with the mouth of the lower shell body and the bottom of the upper cover is clamped in the glue dispensing groove of the waterproof bracket. Finally, the upper cover and the lower shell body are fixed together by bolts, etc., so as to complete the production of the battery pack with waterproof structure.

[0018] Example 2

[0019] A battery pack with a waterproof structure has a structure similar to that of the battery pack with a waterproof structure in Example 1, except that the height of the outer side wall of the glue dispensing groove of the waterproof bracket is lower than the height of the inner side wall of the glue dispensing groove.

Claims

1. A battery pack with a waterproof structure, characterized in that: It includes an upper cover, a lower shell, a battery module and a waterproof bracket. The waterproof bracket is an internally hollow frame structure. A circle of glue-dispensing grooves is provided on the top of the waterproof bracket. The top of the waterproof bracket is set as a platform structure from the outer edge to the outer side wall of the glue-dispensing groove, and the top surface of the platform structure part is lower than the top surface of the outer side wall of the glue-dispensing groove. The battery module is matched to be loaded into the lower shell. The waterproof bracket is matched to be installed on the top of the battery module and a gap is left between the outer side surface of the waterproof bracket and the inner wall of the lower shell. The glue-dispensing groove of the waterproof bracket, the platform structure part of the waterproof bracket and the gap between the outer side surface of the waterproof bracket and the inner wall of the lower shell are all filled with waterproof glue. The upper cover is matched to be mounted in the mouth of the lower shell and the bottom of the upper cover is clamped in the glue-dispensing groove of the waterproof bracket. The upper cover and the lower shell are fixed together.

2. The battery pack with a waterproof structure as claimed in claim 1, characterized in that: A circle of baffles is arranged at the top of the waterproof bracket near the inner edge.

3. The battery pack with a waterproof structure as claimed in claim 1 or 2, characterized in that: The height of the outer side wall of the glue-dispensing groove of the waterproof bracket is lower than the height of the inner side wall of the glue-dispensing groove.

4. The battery pack with a waterproof structure as claimed in claim 1 or 2, characterized in that: The outer ring size of the waterproof bracket gradually increases from the top to the bottom.

5. The battery pack with a waterproof structure as claimed in claim 3, characterized in that: The outer ring size of the waterproof bracket gradually increases from the top to the bottom.

Images