CN212485432U

CN212485432U - Box structure with strong waterproof sealing function

Info

Publication number: CN212485432U
Application number: CN202021500298.XU
Authority: CN
Inventors: 邹业君; 陈庆鸿; 赵小伟; 丰年华; 彭昌亮
Original assignee: Jiangxi Far East Battery Co ltd
Current assignee: Jiangxi Far East Battery Co ltd
Priority date: 2020-07-27
Filing date: 2020-07-27
Publication date: 2021-02-05
Anticipated expiration: 2030-07-27

Abstract

The utility model belongs to the field of power battery manufacturing, in particular to a box body structure with strong waterproof sealing function, which comprises an upper cover, a sealing ring and a lower box body, wherein the upper cover, the sealing ring and the lower box body are provided with corresponding mounting holes and are matched with an upper cover fixing bolt and a projection welding nut, a lower flanging which is attached to the lower box body is arranged on the periphery of the upper cover, and an upper flanging which is attached to the upper cover is arranged on the inner periphery of the box body; and a limiting steel ring is arranged in the sealing ring and is placed on a boss in the sealing ring. The utility model discloses avoid the sealing washer to expose and prolong the stroke that gets into the box such as rainwater dust, improve battery system's waterproof performance for the sealing washer is wrapped up under between box and the upper cover.

Description

Box structure with strong waterproof sealing function

Technical Field

The utility model belongs to power battery preparation field, concretely relates to box structure with strong waterproof sealing function.

Background

Because all the power battery systems are electrically connected, the national standard has high requirements on the waterproof grade of the battery systems, and the waterproof grade of the battery systems must reach the IP67 grade, so each battery system must meet the waterproof requirement through a certain sealing mode and structural design. In the prior art, as shown in fig. 1 and fig. 2, which are schematic diagrams before and after assembly of the current structure, a sealing ring 03 is adhered to a lower box body 04, hole positions are aligned, an upper cover 02 is assembled on the sealing ring 03 again, the hole positions are aligned, and the sealing ring is locked to a projection welding nut 06 through an upper cover bolt 01 along one circle of the box body to achieve a sealing effect.

The disadvantages are as follows: after the sealing ring 03 made of the rubber material is assembled and compressed, part of the sealing ring is still directly exposed outside, the sealing ring is easily corroded and aged, rainwater, dust and the like after failure easily enter the box body, and the sealing function of the whole battery system is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve above-mentioned problem, avoid the sealing washer to expose and prolong the stroke that gets into the box such as rainwater dust, improve battery system's waterproof performance, design a box structure that has strong waterproof sealing function for the sealing washer is wrapped up under between box and the upper cover. The specific technical scheme is as follows:

a box body structure with a strong waterproof sealing function comprises an upper cover, a sealing ring and a lower box body, wherein corresponding mounting holes are formed in the upper cover, the sealing ring and the lower box body, and are matched with an upper cover fixing bolt and a projection welding nut; and a limiting steel ring is arranged in the sealing ring and is placed on a boss in the sealing ring.

Furthermore, the projection welding nut is connected with the lower box body in a welding mode.

Further, the thread length of the upper cover fixing bolt is longer than the sum of the thicknesses of the upper cover and the sealing ring, and the thread length can be used for matching the internal thread of the projection welding nut.

The utility model designs a downward flanging structure through the upper cover, the structure can wrap the sealing ring completely, avoid direct contact with the outside, reduce the risk of corrosion and aging, and simultaneously, the lower box body is designed with an upward flanging structure inwards; due to the fact that the inner side and the outer side of the sealing ring are blocked by the metal flanges, rainwater and dust want to enter the box body and need to turn in a zigzag mode, and therefore the rainwater and dust entering stroke is very difficult, and the external rainwater and dust entering stroke is effectively prolonged; thereby effectual extension sealing washer ageing time, the effectual waterproof performance who improves battery system.

The utility model effectively protects the sealing ring, prolongs the aging of the sealing ring, and reduces the risk of erosion by rainwater; the travel of external rainwater, dust and the like entering the box body is effectively prolonged, and the waterproof performance of the battery system is improved.

Drawings

FIG. 1 is a schematic view of a prior art assembly configuration;

FIG. 2 is a prior art assembled state diagram;

FIG. 3 is a schematic view of the assembly structure of the present invention;

FIG. 4 is an assembled state diagram of the present invention;

FIG. 5 is a schematic view of the battery box structure of the present invention;

reference numerals:

01-upper cover fixing bolt, 02-upper cover, 03-sealing ring, 04-lower box body, 05-limiting steel ring, 06-projection welding nut, 07-lower flanging and 08-upper flanging.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 3-4: a box body structure with a strong waterproof sealing function comprises an upper cover 02, a sealing ring 03 and a lower box body 04, wherein corresponding mounting holes are formed in the upper cover 02, the sealing ring 03 and the lower box body 04 and are matched with an upper cover fixing bolt 01 and a projection welding nut 06, a lower flanging 07 attached to the lower box body is arranged on the periphery of the upper cover, and an upper flanging 08 attached to the upper cover is arranged on the inner periphery of the box body; and a limiting steel ring 05 is arranged in the sealing ring and is placed on a boss in the sealing ring.

Further, the thread length of the upper cover fixing bolt 01 is longer than the sum of the thicknesses of the upper cover and the sealing ring, and the upper cover fixing bolt 01 is matched with the internal thread of the projection welding nut 06.

The utility model discloses upper cover 02 designs downward turn-ups structure 07, and this structure can be all wrapped up sealing washer 03, avoids with external direct contact, can reduce the risk of corrosion ageing, and lower box 04 designs upward turn-ups structure 08 inwards simultaneously; due to the fact that the inner side and the outer side of the sealing ring are blocked by the metal flanges, rainwater and dust want to enter the box body and need to turn in a zigzag mode, and therefore the rainwater and dust entering stroke is very difficult, and the external rainwater and dust entering stroke is effectively prolonged; thereby effectual extension sealing washer ageing time, the effectual waterproof performance who improves battery system.

Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.

Claims

1. The utility model provides a box structure with strong waterproof sealing function which characterized in that: the upper cover, the sealing ring and the lower box body are provided with corresponding mounting holes and matched with an upper cover fixing bolt and a projection welding nut, a lower flanging attached to the lower box body is arranged on the periphery of the upper cover, and an upper flanging attached to the upper cover is arranged on the inner periphery of the box body; and a limiting steel ring is arranged in the sealing ring and is placed on a boss in the sealing ring.

2. The box structure with strong waterproof sealing function according to claim 1, characterized in that: the projection welding nut is connected with the lower box body in a welding mode.

3. The box structure with strong waterproof sealing function according to claim 1, characterized in that: the thread length of the upper cover fixing bolt is longer than the thickness sum of the upper cover and the sealing ring, and the upper cover fixing bolt is matched with the internal thread of the projection welding nut.