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CN-224232863-U - Moisture-proof explosion-proof valve

CN224232863UCN 224232863 UCN224232863 UCN 224232863UCN-224232863-U

Abstract

The utility model discloses a moisture-resistant and explosion-proof valve in the field of explosion-proof valves, which comprises a valve body, a protective cover and a fixed seat, wherein the valve body is provided with a guide pillar penetrating the valve body and a spring arranged between the guide pillar and the valve body, the spring is used for providing elastic force for the guide pillar always along the direction of the valve body, a conducting ventilation channel is arranged in the fixed seat, the fixed seat is provided with a first accommodating cavity and a second accommodating cavity with upward openings, the first accommodating cavity is communicated with the second accommodating cavity, the second accommodating cavity is communicated with a through hole, the first accommodating cavity is provided with a silica gel sheet positioned on the ventilation channel, the silica gel sheet is provided with an opening, the second accommodating cavity is provided with a humidity regulating sheet positioned above the silica gel sheet, and the second accommodating cavity is provided with a ventilation film positioned above the humidity regulating sheet.

Inventors

  • Lu xihu
  • WANG QIANG

Assignees

  • 惠州市欣宇科技有限公司

Dates

Publication Date
20260512
Application Date
20250526

Claims (10)

  1. 1. The utility model provides a wet explosion-proof valve that hinders, includes valve body, visor and fixing base, the valve body is provided with the guide pillar of wearing to locate in the valve body and sets up the spring between guide pillar and valve body, the spring is used for providing the elasticity along the valve body direction all the time for the guide pillar, its characterized in that: the inside of fixing base is provided with the ventilative passageway that switches on, the fixing base has the ascending first chamber and the second chamber of holding of opening, first chamber and the second chamber of holding communicate each other that holds, the second holds chamber and communicates each other with the through-hole, first chamber of holding is equipped with the silica gel piece that is located ventilative passageway, the opening has been seted up to the silica gel piece, the second holds the chamber and is equipped with the humidifying piece that is located the silica gel piece top, the second holds the chamber and is equipped with the ventilated membrane that is located humidifying piece top.
  2. 2. The moisture-resistant and explosion-proof valve as set forth in claim 1, wherein a gasket is disposed inside the first housing chamber and above the breathable film, the gasket is used for compressing the breathable film, the silicone sheet and the humidity-controlling sheet, and the protective cover is connected with the fixing seat through the gasket.
  3. 3. The moisture-resistant and explosion-proof valve as set forth in claim 2, wherein a strong iron-absorbing sheet is disposed between the fixed seat and the protective cover, the top end of the strong iron-absorbing sheet is connected with the protective cover, and the bottom end of the strong iron-absorbing sheet is connected with the sealing gasket.
  4. 4. The moisture-resistant and explosion-proof valve as set forth in claim 1, wherein the side surface of the protective cover extends outwards to form a plurality of clamping blocks, the inner wall of the fixing seat protrudes to form an annular protrusion, and the clamping blocks are connected with the annular protrusion in a clamping mode to achieve clamping type fixing of the protective cover and the fixing seat.
  5. 5. The moisture-resistant and explosion-proof valve as set forth in claim 1, wherein the end of the fixed seat far away from the protective cover is recessed inwards to form an annular groove, a sealing ring matched with the annular groove is clamped in the annular groove, and the sealing ring is in sealing contact with the upper end face of the valve body to realize the sealing between the fixed seat and the valve body.
  6. 6. The moisture and explosion proof valve of claim 1, wherein one end of the valve body extends outwards to form an annular portion, and a sealing element is arranged at one end of the valve body, which is close to the annular portion.
  7. 7. The moisture and explosion proof valve of claim 6, wherein the end of the valve body adjacent to the annular portion extends outwardly to form a fixed portion, and the fixed portion is provided with a plurality of threads.
  8. 8. The moisture-resistant and explosion-proof valve as set forth in any one of claims 1-6, wherein a plurality of notches are provided on the surface of the fixing seat, the peripheral edge of the protective cover protrudes outwards to form a plurality of protrusions corresponding to the positions of the notches, and an exhaust passage communicated with the first accommodating cavity is formed between the notches and the protrusions.
  9. 9. The moisture-resistant and explosion-proof valve as set forth in any one of claims 1-6, wherein a protective housing is disposed at one end of the valve body, the guide post is provided with an exhaust hole communicated with the ventilation channel, and an inner cavity is formed in the protective housing.
  10. 10. The moisture and explosion proof valve of claim 9, wherein the guide post and the spring are located in the inner cavity, one end of the spring is connected with the guide post, and the other end of the spring is connected with the valve body.

Description

Moisture-proof explosion-proof valve Technical Field The utility model relates to the field of explosion-proof valves, in particular to a moisture-proof explosion-proof valve. Background The safe and reliable operation of core components such as a battery PACK, an electric control and a motor in an electric automobile power system is important. In order to ensure safe and stable operation, the power battery needs to be waterproof and dustproof, namely, the power battery theoretically needs to be in a sealing state, but in the sealing state, once the power battery is in short-circuit thermal runaway, a large amount of high-temperature mixed gas containing solid or gelatinous substances can be generated, and if the mixed gas cannot be discharged in time, intense fire and explosion can be generated under the normal condition, so that serious casualties and property loss are caused. Therefore, the prior art scheme is to install a waterproof, breathable and explosion-proof balance valve (commonly called an explosion-proof valve) on the battery pack to meet the waterproof and explosion-proof requirements of the power battery system. Explosion-proof valve is an important safety protection device, and is widely applied to systems containing combustible gas or substances to prevent explosion caused by over-high pressure in the systems. It is usually installed in the high-pressure part of the system, and when the internal pressure of the system exceeds a set value, the explosion-proof valve is automatically opened to release the internal pressure, so that the safety of the system is protected. In electric automobile driving system, explosion-proof valve is mainly used for the safety protection of battery package. When a large amount of gas is generated in the battery due to the over-pressure or abnormal temperature rise, the explosion-proof valve can be automatically opened to release the internal pressure, so that the explosion of the battery is prevented. The existing explosion-proof valve has the defect that the design of the existing explosion-proof valve mainly focuses on the release of pressure and the explosion-proof function, and the absorption and the discharge of moisture are ignored. In an electric vehicle power system, core components such as a battery pack are required to maintain a dry environment to prevent occurrence of faults such as electrical short circuits. However, the existing explosion-proof valve generally has only a unidirectional ventilation function or only a function of absorbing moisture, cannot effectively absorb and discharge the moisture inside the battery pack, cannot rapidly discharge the moisture inside the battery pack, and causes the moisture to accumulate in the battery pack, so that the risk of electrical faults is increased. In addition, the explosion-proof valve is installed on the battery package when using, realize waterproof ventilative through waterproof ventilated membrane, although waterproof ventilated membrane can prevent liquid water from getting into the battery package inside, but can't prevent moisture in the air to get into the battery package, can produce the phenomenon under the environment that the wet difference changes after a large amount of moisture get into and lead to faults such as battery package and incasement electrical short circuit, simultaneously, current explosion-proof valve mainly relies on inside guide pillar switch to hinder wet, seriously influence the product displacement when explosion-proof is opened, about only not install 1/4 that hinder wet valve, so seriously influence the product air permeability, the high temperature that produces in the operation can not in time discharge the battery package completely, lead to faults such as electrical short circuit in the battery package, therefore, current explosion-proof valve still has unable absorption battery package inside moisture to and can't discharge the high-temperature gas that produces inside the battery package fast, the problem that the discharge wet tolerance is little. Disclosure of utility model In order to overcome the defects of the prior art, the utility model provides the moisture-resistant explosion-proof valve, which can effectively solve the technical problems that the existing explosion-proof valve cannot absorb moisture in a battery pack and cannot rapidly discharge high-temperature gas generated in the battery pack, and the discharge moisture is small. The utility model solves the technical problems by adopting the technical scheme that the moisture-resistant and explosion-proof valve comprises a valve body, a protective cover and a fixing seat, wherein the valve body is provided with a guide post penetrating the valve body and a spring arranged between the guide post and the valve body, the spring is used for providing elastic force for the guide post along the valve body direction all the time, a conductive ventilation channel is arranged in the fixing seat, the fixin