CN212542551U

CN212542551U - Sealing element and sealing structure for vehicle power battery pack

Info

Publication number: CN212542551U
Application number: CN202020118021.4U
Authority: CN
Inventors: 柯玉超; 夏迎松; 吴蕾; 童徽
Original assignee: Anhui Zhongding Sealing Parts Co Ltd
Current assignee: Anhui Zhongding Sealing Parts Co Ltd
Priority date: 2020-01-19
Filing date: 2020-01-19
Publication date: 2021-02-12
Anticipated expiration: 2030-01-19

Abstract

The utility model discloses a sealing element for a vehicle power battery pack, wherein a sealing main body comprises two sealing strips, the two sealing strips are respectively positioned at two sides of an installation framework, the top of each sealing strip is provided with two first sealing ribs which are arranged side by side, the bottom of each sealing strip is provided with two second sealing ribs which are arranged side by side, and each second sealing rib is arranged corresponding to one first sealing rib; the sealing member rubber seal cross-section design of two sealing strips can effectual reduction rigidity, can realize two-way self-tightening simultaneously and seal, when guaranteeing sealed effect, two sealing strips vulcanize respectively in installation skeleton both sides, through the compressive capacity of the sealed main part of installation skeleton control, prevent that sealed main part from being compressed excessively, cause damage or destruction, improve sealing stability. The utility model also discloses a seal structure for automobile-used power battery package.

Description

Sealing element and sealing structure for vehicle power battery pack

Technical Field

The utility model relates to a power battery encapsulates technical field, especially relates to an automobile-used power battery is sealing member and seal structure for package.

Background

The power battery is used as a power source of the electric automobile, is generally arranged below a vehicle floor, and protects the battery from external pollution and damage through a battery pack. However, due to the complex operating conditions of the vehicle, muddy water is always splashed on the power battery pack and has a certain wading probability. If the battery pack is sealed and fails, the internal electrical components of the battery pack are damaged, even the danger of electric leakage, fire and the like occurs, at present, a plurality of spontaneous combustion events caused by the sealing failure of the battery pack exist, and the sealing property of the battery pack is very important.

In the existing battery pack sealing technology, generally, a sealant or a sealing member is arranged between the upper and lower cases of the battery pack, and the sealing is performed by adhesion or extrusion. Because the battery pack is difficult to open in the later stage for maintenance, the sealant scheme is only adopted by a few enterprises, and more various foaming rubber strips, sealing gaskets or sealing elements are adopted for extrusion sealing. The foaming adhesive tape is formed by cutting and splicing foaming plates, and the sealing problem is easy to occur at the joint; the sealing gasket or the sealing element is integrally vulcanized by rubber, so that the sealing is more reliable.

The utility model 201320039714.4 discloses a power battery package casing seal structure for car, through with the joint strip assembly under in the seal groove of the last border of casing, it is sealed to adopt the casing to compress tightly joint strip, and this scheme needs design slot to guarantee the installation accuracy of sealing strip in the slot.

Utility model 201620979181.1 discloses a battery package seal structure for vehicle, through the protruding muscle of two-sided design about seal gasket, the sealed effect of reinforcing. This solution is reliable in sealing, but there is a risk of excessive compressive loads.

Utility model 201520861940.X discloses a battery pack seal structure, and the both ends of sealed pad are provided with multi-level lip limit structure, make the increase of interference volume, promote sealing performance. The scheme is reliable in sealing, but the self-sealing problem of the battery pack when the internal pressure is small cannot be solved.

Utility model 201820908659.0 discloses a power battery shell seal structure, through setting up the arch on the casing installation face down, strengthen battery case structure's leakproofness through the arch. The sealing member of the scheme is simple to prepare, but a protruding structure needs to be prepared on the battery pack shell.

In summary, although the prior art adopts different methods to reduce the installation load, enhance the sealing reliability, and reduce the manufacturing difficulty and cost, the objectives of the sealing reliability, the manufacturing difficulty, and the cost cannot be achieved at the same time.

SUMMERY OF THE UTILITY MODEL

For solving the technical problem who exists among the background art, the utility model provides an automobile-used power battery is sealing member and seal structure for package.

The utility model provides a sealing member is used to automobile-used power battery package, include: the sealing structure comprises a mounting framework and a sealing main body vulcanized outside the mounting framework;

the sealing main body comprises two sealing strips, the two sealing strips are respectively positioned on two sides of the mounting framework, two first sealing ribs arranged side by side are arranged at the top of each sealing strip, two second sealing ribs arranged side by side are arranged at the bottom of each sealing strip, and each second sealing rib corresponds to one first sealing rib.

Preferably, the middle part of the mounting framework is provided with a vertically penetrating mounting opening.

Preferably, the sealing strip has an X-shaped cross-section.

Preferably, the two sealing strips are symmetrically arranged on two sides of the mounting framework.

In the utility model, the sealing main body of the sealing element for the vehicle power battery pack comprises two sealing strips, the two sealing strips are respectively positioned at two sides of the mounting framework, the top of each sealing strip is provided with two first sealing ribs which are arranged side by side, the bottom of each sealing strip is provided with two second sealing ribs which are arranged side by side, and each second sealing rib is arranged corresponding to one first sealing rib; the sealing member rubber seal cross-section design of two sealing strips can effectual reduction rigidity, can realize two-way self-tightening simultaneously and seal, when guaranteeing sealed effect, two sealing strips vulcanize respectively in installation skeleton both sides, through the compressive capacity of the sealed main part of installation skeleton control, prevent that sealed main part from being compressed excessively, cause damage or destruction, improve sealing stability.

The utility model also provides an automobile-used power battery wraps and uses seal structure, including foretell automobile-used power battery wraps and uses the sealing member.

Preferably, the battery further comprises a battery shell, a battery upper cover and a fastening bolt;

the battery upper cover is provided with an upper mounting hole, the battery shell is positioned below the battery upper cover and is provided with a lower mounting screw hole, the sealing element is positioned between the battery upper cover and the battery shell, the first sealing rib is abutted against the battery upper cover and the second sealing rib is abutted against the battery shell, and one end of the fastening bolt penetrates through the upper mounting hole and the lower mounting screw hole in threaded fit.

Preferably, the edge of the upper cover of the battery is provided with a first flanging extending outwards in the direction perpendicular to the sealing strip, and one end of the first flanging, which is far away from the edge of the upper cover of the battery, extends downwards.

Preferably, the edge of the battery shell is provided with a second flanging which is arranged in the direction perpendicular to the sealing strip and corresponds to the first flanging, and one end, far away from the edge of the battery shell, of the second flanging extends downwards.

Preferably, a fastening bolt passes through the mounting opening.

Preferably, the two sealing strips are arranged symmetrically on both sides of the fastening bolt.

In the utility model, the battery shell is positioned below the upper cover of the battery, the sealing element is positioned between the upper cover of the battery and the battery shell, the first sealing rib is abutted against the upper cover of the battery, the second sealing rib is abutted against the battery shell, and one end of the fastening bolt passes through the upper mounting hole and is in threaded fit with the lower mounting screw hole; the sealing member of two sealing strips reduces battery case's deformation through effectively reducing rigidity, effectively prevents simultaneously that the inside harmful substance that battery package internal pressure risees suddenly or reduces and bring from leaking or the pollutant invasion.

Drawings

Fig. 1 is a schematic structural diagram of a sealing member for a vehicle power battery pack according to the present invention.

Fig. 2 is the utility model provides a local cooperation schematic diagram that looks sideways at of vehicle power battery package seal structure.

Fig. 3 is the utility model provides a local spatial structure schematic diagram of vehicle power battery is seal structure for package.

Detailed Description

As shown in fig. 1 to 3, fig. 1 is the utility model provides a structural schematic diagram of sealing member is used to automobile-used power battery package, fig. 2 is the utility model provides a cooperation structural schematic diagram is looked sideways at to automobile-used power battery package seal structure's part, fig. 3 is the utility model provides a vehicle-used power battery package is with seal structure's local spatial structure schematic diagram.

Referring to fig. 1, the utility model provides a sealing member is used to automobile-used power battery package, include: the mounting framework 1 and the sealing main body vulcanized outside the mounting framework 1;

the sealing main body comprises two sealing strips 11, the two sealing strips 11 are respectively positioned on two sides of the installation framework 1, two first sealing ribs 12 arranged side by side are arranged at the top of each sealing strip 11, two second sealing ribs 13 arranged side by side are arranged at the bottom of each sealing strip 11, and each second sealing rib 13 corresponds to one first sealing rib 12.

In the specific design mode of the mounting framework, a vertically-penetrated mounting opening is formed in the middle of the mounting framework 1; in actual design, a metal ring can be selected as an installation framework, and two sealing strips are vulcanized on two sides of the metal ring respectively.

Referring to fig. 2 and 3, the present embodiment also proposes a sealing structure for a vehicle power battery pack, including the above-described sealing member for a vehicle power battery pack.

In a specific design mode of the sealing structure for the power battery pack for the vehicle, the sealing structure further comprises a battery shell 20, a battery upper cover 30 and a fastening bolt 40;

the battery upper cover 30 is provided with an upper mounting hole, and the battery case 20 is located below the battery upper cover 30 and provided with a lower mounting screw hole thereon.

In the specific matching mode of the sealing structure for the vehicle power battery pack of the embodiment, the sealing element is located between the upper battery cover 30 and the battery shell 20, the mounting opening on the sealing element mounting framework is correspondingly arranged in the upper mounting hole and the lower mounting screw hole, the first sealing rib 12 abuts against the upper battery cover 30 and the second sealing rib 13 abuts against the battery shell 20, and one end of the fastening bolt 40 sequentially penetrates through the upper mounting hole and the mounting opening and is in threaded fit with the lower mounting screw hole.

In this embodiment, the sealing element for the vehicle power battery pack, provided by the present invention, includes two sealing strips, where the two sealing strips are respectively located at two sides of the mounting frame, the top of each sealing strip is provided with two first sealing ribs arranged side by side, and the bottom of each sealing strip is provided with two second sealing ribs arranged side by side, and each second sealing rib is arranged corresponding to one first sealing rib; the sealing member rubber seal cross-section design of two sealing strips can effectual reduction rigidity, can realize two-way self-tightening simultaneously and seal, when guaranteeing sealed effect, two sealing strips vulcanize respectively in installation skeleton both sides, through the compressive capacity of the sealed main part of installation skeleton control, prevent that sealed main part from being compressed excessively, cause damage or destruction, improve sealing stability.

In the embodiment of the sealing tape, the sealing tape 11 has an X-shaped cross section; carry out the optimal design through arranging to the sealed muscle on the sealing strip for the sealing strip has X type cross-section, improves the support to battery upper cover and casing, and X type sealing cross-section pressurized back is to both sides deformation simultaneously, forms the self-tightening seal, and two-way self-tightening seal can be realized to two sealing strips.

In a further arrangement of the sealing strips, two sealing strips 11 are arranged symmetrically on both sides of the fastening bolt 40.

In order to improve the sealing effect and prevent external pollutants from invading, in a further specific design, the edge of the upper battery cover 30 is provided with a first flanging 31 which extends outwards in the direction vertical to the sealing strip 11, and one end of the first flanging 31, which is far away from the edge of the upper battery cover 30, extends downwards; through setting up first turn-ups, play the outside guard action of sealing member, prevent that rivers from directly impacting the sealing member.

Correspondingly, the edge of the battery shell 20 is provided with a second flanging 21 which is arranged in the direction perpendicular to the sealing strip 11 and corresponds to the first flanging 31, one end, far away from the edge of the battery shell 20, of the second flanging 21 extends downwards, and the second flanging is matched with the first flanging to further prevent external pollutants from invading.

In this embodiment, in the proposed sealing structure for a vehicle power battery pack, a battery case is located below a battery upper cover, a sealing member is located between the battery upper cover and the battery case, a first sealing rib abuts against the battery upper cover and a second sealing rib abuts against the battery case, and one end of a fastening bolt penetrates through the upper mounting hole and is in threaded fit with a lower mounting screw hole; the sealing member of two sealing strips reduces battery case's deformation through effectively reducing rigidity, effectively prevents simultaneously that the inside harmful substance that battery package internal pressure risees suddenly or reduces and bring from leaking or the pollutant invasion.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A sealing member for a vehicle power battery pack, comprising: the sealing structure comprises a mounting framework (1) and a sealing main body vulcanized outside the mounting framework (1);

the sealing main body comprises two sealing strips (11), the two sealing strips (11) are respectively located on two sides of the mounting framework (1), two first sealing ribs (12) arranged side by side are arranged at the top of each sealing strip (11), two second sealing ribs (13) arranged side by side are arranged at the bottom of each sealing strip (11), and each second sealing rib (13) corresponds to one first sealing rib (12).

2. The seal for vehicle power battery pack according to claim 1, wherein a vertically penetrating mounting opening is provided in the middle of the mounting frame (1).

3. The seal for vehicle power battery pack according to claim 1 or 2, characterized in that the seal strip (11) has an X-shaped cross section.

4. The seal for a vehicle power battery pack according to claim 1, characterized in that two seal strips (11) are symmetrically arranged on both sides of the mounting frame (1).

5. A sealing structure for a power battery pack for a vehicle, characterized by comprising the sealing member for a power battery pack for a vehicle according to any one of claims 1 to 4.

6. The sealing structure for the vehicle power battery pack according to claim 5, further comprising a battery case (20), a battery upper cover (30), a fastening bolt (40);

battery upper cover (30) are equipped with the mounting hole, and battery case (20) are located battery upper cover (30) below and are equipped with down the installation screw on it, and the sealing member is located between battery upper cover (30) and battery case (20), and first sealed muscle (12) support by battery upper cover (30) and the sealed muscle of second (13) support by battery case (20), and fastening bolt (40) one end is passed go up mounting hole and installation screw thread fit down.

7. The sealing structure for the vehicle power battery pack according to claim 6, wherein the edge of the battery upper cover (30) is provided with a first flange (31) extending outward in a direction perpendicular to the sealing strip (11), and one end of the first flange (31) away from the edge of the battery upper cover (30) extends downward.

8. The sealing structure for the vehicle power battery pack according to claim 7, wherein the edge of the battery case (20) is provided with a second flange (21) which is provided corresponding to the first flange (31) in a direction perpendicular to the weather strip (11), and the second flange (21) extends downward away from one end of the edge of the battery case (20).