CN218731595U

CN218731595U - Decompression valve for automobile battery pack

Info

Publication number: CN218731595U
Application number: CN202222950120.0U
Authority: CN
Inventors: 韩大保; 刘超
Original assignee: Jiangsu Qinggao Precision Industrial Parts Co ltd
Current assignee: Jiangsu Qinggao Precision Industrial Parts Co ltd
Priority date: 2022-11-04
Filing date: 2022-11-04
Publication date: 2023-03-24
Anticipated expiration: 2032-11-04

Abstract

The utility model discloses a relief valve for an automobile battery pack, relating to the technical field of safety valves and comprising a valve body, wherein a through hole is formed in the center of the valve body in a penetrating way; the top end of the valve body is elastically provided with a valve cover, the bottom end of the valve cover is of an opening structure, the valve body is positioned in an opening of the valve cover, and a ventilation channel is formed between the outer wall of the valve body and the inner wall of the valve cover; an upper top ring is arranged at the outer edge of the top end of the valve body, a lower top ring is arranged at the inner edge of the opening of the valve cover, and a return spring is arranged between the upper top ring and the lower top ring; the top of the valve body is embedded with an inner sealing ring, and the bottom is embedded with an outer sealing ring. The utility model can weaken the impact force of high-speed gas by utilizing the bent exhaust passage, thereby avoiding the danger caused by the direct impact of high-pressure high-temperature gas to the outside of the vehicle; utilize the straining each other of going up apical ring and lower apical ring simultaneously, the valve gap is jumped out when preventing the impact force too big, effectively ensures the security of using, the utility model discloses simple structure, the sexual valence relative altitude.

Description

Decompression valve for automobile battery pack

Technical Field

The utility model relates to a relief valve technical field especially relates to a relief valve is used to car battery package.

Background

With the rapid development of new energy automobiles, power batteries are applied in a large scale. In the power battery use, under operating modes such as high temperature, extrusion, overcharge, short circuit, electric core temperature can continuously rise, for alleviating heat and stretch, can add the relief valve on the battery box, in time with high-temperature high-pressure gas discharge battery package to reduce the inside heat of battery package, also avoid the too early structural damage of appearing of battery box and then lead to catching a fire.

In order to solve the problems, the patent publication number CN209434271U discloses an explosion-proof pressure relief safety valve for a new energy automobile power battery pack, which comprises a piston, a valve body, a first sealing ring, a second sealing ring and an elastic connecting piece, wherein the first sealing ring and the second sealing ring are respectively arranged at two ends of the valve body, the piston is arranged on the first sealing ring, the elastic connecting piece penetrates through the valve body to be connected with the piston so that the piston is tightly pressed in the valve body, a plurality of mounting lugs are annularly arranged on the outer side of the valve body, a plurality of connecting ribs are arranged in the valve body, guide holes are formed in the centers of the connecting ribs, the elastic connecting piece comprises a guide pillar and a spring, the guide pillar is arranged in the guide holes, an exhaust pressure relief opening is formed between adjacent connecting ribs, and a first accommodating groove and a second accommodating groove are respectively formed in the outer edges of the connecting ribs.

After the safety valve is installed, gas can be discharged from the peripheral position of the piston, but because the gas discharge position faces towards the outside, when a person walks from the outside of the automobile, the high-speed gas with high temperature can cause physical harm to the person, and certain safety problems exist.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a relief valve is used to car battery package has simple structure, reduces impact force, the high advantage of security.

The utility model discloses a can realize through following technical scheme:

a pressure release valve for an automobile battery pack comprises a valve body, wherein a through hole is formed in the center of the valve body in a penetrating mode; the top end of the valve body is elastically provided with a valve cover, the bottom end of the valve cover is of an opening structure, the valve body is positioned in an opening of the valve cover, and a ventilation channel is formed between the outer wall of the valve body and the inner wall of the valve cover; an upper top ring is arranged at the outer edge of the top end of the valve body, a lower top ring is arranged at the inner edge of the opening of the valve cover, and a return spring is arranged between the upper top ring and the lower top ring; the top of the valve body is embedded with an inner sealing ring, and the bottom is embedded with an outer sealing ring.

Further setting the following steps: the top of valve body is seted up and is used for imbedding the top annular of inner seal circle, the bottom of valve body is seted up and is used for the bottom annular of outer sealing washer embedding.

Further setting as follows: the inner sealing ring and the outer sealing ring are high-temperature-resistant explosion-proof sealing rings.

Further setting the following steps: the outer diameter of the upper top ring is larger than the inner diameter of the lower top ring.

Further setting the following steps: a gap is reserved between the outer wall of the upper top ring and the inner wall of the valve cover, and a gap is reserved between the inner wall of the lower top ring and the outer wall of the valve body.

Further setting as follows: the outside an organic whole of valve body is provided with outer surrounding plate, the mounting hole has all been seted up in outer surrounding plate's four corners.

Further setting the following steps: the outer side of the valve body is provided with a step groove, and the peripheral plate is inserted in the step groove.

To sum up, the utility model discloses a beneficial technological effect does:

(1) The valve cover is completely covered on the outer side of the valve body, and the bent exhaust channel is formed between the valve cover and the valve body, so that when gas is exhausted, the impact force of the gas is weakened, and meanwhile, the gas is exhausted from the position of the peripheral plate, the exhaust direction is changed, and the danger caused by the direct impact of high-pressure high-temperature gas to the outside of the vehicle is avoided;

(2) The valve cover and the valve body are movably arranged, and the upper top ring and the lower top ring are fastened with each other, so that the valve cover can be prevented from jumping out when the impact force is too large, and the valve cover is effectively fastened on the valve body, and the use safety of the pressure relief valve is guaranteed;

(3) The utility model discloses simple structure, spare part is few, is fit for large-scale production, and the preparation difficulty degree is low simultaneously, the sexual valence relative altitude.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is an exploded schematic view of the present invention;

fig. 3 is a schematic cross-sectional view of the present invention;

fig. 4 is a partially enlarged view of a portion a in fig. 3.

Reference numerals are as follows: 1. a valve body; 2. a through hole; 3. a valve cover; 4. a ventilation channel; 5. an upper top ring; 6. a lower top ring; 7. a return spring; 8. an inner seal ring; 9. an outer sealing ring; 10. a top ring groove; 11. a bottom ring groove; 12. a peripheral plate; 13. mounting holes; 14. a stepped groove.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1 and 2, for the utility model discloses a relief valve for automobile battery package, including valve body 1, valve body 1 adopts steel material to make and valve body 1 center department runs through and has seted up through-hole 2.

Referring to fig. 3 and 4, the top end of the valve body 1 is elastically provided with the valve cover 3, the bottom of the valve cover 3 is in an open structure, and the top end of the valve body 1 can extend into the bottom opening of the valve cover 3. Wherein, the inner diameter of the valve cover 3 is larger than the outer diameter of the valve body 1. An upper top ring 5 is integrally arranged at the outer edge of the top end of the valve body 1, and a lower top ring 6 is integrally arranged at the inner edge of the opening of the valve cover 3. Wherein, the outer diameter of the upper top ring 5 is larger than the inner diameter of the lower top ring 6. Thus, the bonnet 3 to which the lower top ring 6 is attached will be firmly fixed to the valve body 1. A return spring 7 is fixed between the upper top ring 5 and the lower top ring 6, and the elastic force of the return spring 7 enables the valve cover 3 to have elastic activity and forces the valve cover 3 to cling to the top end of the valve body 1 in a natural state. In the installed valve cover 3, a gap is reserved between the outer wall of the upper top ring 5 and the inner wall of the valve cover 3, and a gap is reserved between the inner wall of the lower top ring 6 and the outer wall of the valve body 1. A ventilation channel 4 is formed between the outer wall of the valve body 1 and the inner wall of the valve cover 3. When the gas in the battery pack is discharged, the air pressure pushes the valve cover 3 to move outwards, the return spring 7 is compressed, and the gas can pass through the through hole 2 and is discharged to the outer side of the valve cover 3 from the ventilation channel 4.

The top annular 10 has been seted up on the top of valve body 1, and the embedding of top annular 10 is installed inner seal 8, and the relief valve under the natural state, inner seal 8 hug closely at valve gap 3 inner wall. The bottom annular 11 has been seted up to the bottom of valve body 1, and the embedding of bottom annular 11 is installed outer seal ring 9, installs the relief valve on the car, and outer seal ring 9 can hug closely on car outer wall or battery package outer wall. Because of high temperature and safety, the inner sealing ring 8 and the outer sealing ring 9 are high-temperature resistant explosion-proof sealing rings.

Referring to fig. 1 and 4, a peripheral plate 12 is integrally arranged on the outer side of the valve body 1, a stepped groove 14 is formed in the outer side of the valve body 1, the peripheral plate 12 is inserted into the stepped groove 14, and four corners of the peripheral plate 12 are provided with mounting holes 13. After the valve cover 3 and the valve body 1 are installed, the peripheral plate 12 is installed and the peripheral plate 12 and the valve body 1 are integrally fixed.

The utility model discloses a theory of operation and beneficial effect do:

in the operation process of the pressure release valve, high-pressure gas in the automobile can jack up the valve cover 3, so that the air is exhausted outwards through the air exchange channel 4, and after the air pressure inside and outside the automobile is balanced, the valve cover 3 is closed. The utility model can weaken the impact force of high-speed gas by arranging the valve cover 3 and utilizing the bent exhaust passage, thereby avoiding the danger caused by the direct impact of high-pressure high-temperature gas to the outside of the vehicle; meanwhile, the valve cover 3 and the valve body 1 are movably arranged, and the upper top ring 5 and the lower top ring 6 are fastened with each other, so that the valve cover 3 is prevented from jumping out when the impact force is too large, and the use safety is effectively guaranteed. The utility model discloses compare with traditional relief valve, its simple structure, the part is few, and this has very big advantage on large-scale production and price/performance ratio.

The above, only do the preferred embodiment of the present invention, not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model should be covered within the protection scope of the utility model.

Claims

1. The utility model provides a relief valve is used to car battery package which characterized in that: the valve comprises a valve body (1), wherein a through hole (2) is formed in the center of the valve body (1) in a penetrating manner;

the top end of the valve body (1) is elastically provided with a valve cover (3), the bottom end of the valve cover (3) is of an opening structure, the valve body (1) is positioned in an opening of the valve body, and a ventilation channel (4) is formed between the outer wall of the valve body (1) and the inner wall of the valve cover (3);

an upper top ring (5) is arranged at the outer edge of the top end of the valve body (1), a lower top ring (6) is arranged at the inner edge of the opening of the valve cover (3), and a return spring (7) is arranged between the upper top ring (5) and the lower top ring (6);

an inner sealing ring (8) is embedded at the top end of the valve body (1), and an outer sealing ring (9) is embedded at the bottom end of the valve body.

2. The pressure release valve for the automobile battery pack according to claim 1, characterized in that: the top of valve body (1) is seted up and is used for the embedding top annular (10) of inner seal circle (8), the bottom of valve body (1) is seted up and is used for bottom annular (11) of outer sealing washer (9) embedding.

3. The pressure release valve for the automobile battery pack according to claim 1 or 2, characterized in that: the inner sealing ring (8) and the outer sealing ring (9) are high-temperature-resistant explosion-proof sealing rings.

4. The pressure release valve for the automobile battery pack according to claim 1, characterized in that: the outer diameter of the upper top ring (5) is larger than the inner diameter of the lower top ring (6).

5. The pressure release valve for the automobile battery pack according to claim 4, characterized in that: a gap is reserved between the outer wall of the upper top ring (5) and the inner wall of the valve cover (3), and a gap is reserved between the inner wall of the lower top ring (6) and the outer wall of the valve body (1).

6. The pressure release valve for the automobile battery pack according to claim 1, characterized in that: the valve is characterized in that a peripheral plate (12) is integrally arranged on the outer side of the valve body (1), and mounting holes (13) are formed in four corners of the peripheral plate (12).

7. The pressure release valve for the automobile battery pack according to claim 6, characterized in that: the outer side of the valve body (1) is provided with a step groove (14), and the peripheral plate (12) is inserted in the step groove (14).