An explosion-proof valve capable of managing humidity and its application

Abstract

The present invention discloses an explosion-proof valve capable of humidity management, comprising: a valve body, a reversible adsorption core, a diaphragm valve, a breathable membrane, and a spring valve provided on the path for air circulation inside and outside the valve body. Air inside the valve body passes through the reversible adsorption core and is discharged from the diaphragm valve to the outside of the valve body, forming a moisture removal path. The spring valve comprises an umbrella cover, a connecting rod, and a spring. The umbrella cover is connected to one end of the connecting rod, and the spring is coaxially arranged on the connecting rod. The spring is provided with an initial compression force to ensure the sealing of the spring valve. When the internal pressure increases, the internal pressure will form an outward thrust on the umbrella cover, which is transmitted to the spring through the connecting rod. The spring is compressed and the umbrella cover opens to the outside, forming a direct path for air inside and outside. Through the above-mentioned method, the present invention can effectively control condensation and maintain internal and external pressure balance. When the internal pressure exceeds the set limit, the spring valve is driven outward by the internal pressure, so that the air inside and outside are directly connected, achieving a rapid pressure relief effect.

Description

Technical Field

[0001] The present invention discloses an explosion-proof valve capable of performing humidity management and application thereof. Background Art

[0002] The battery is the most critical component of new energy vehicles. During the operation of the battery pack, the internal pressure changes due to the increase and decrease of internal temperature. It is necessary to balance the internal and external pressure of the battery pack to ensure the normal operation of the battery pack. When the components in the battery pack malfunction, the internal pressure increases sharply and exceeds the safety limit, affecting the safety of battery use. Therefore, the sharply increased pressure needs to be quickly released. In addition, the existing pressure balancing valve cannot prevent external moist air from entering the shell. When the humidity inside the shell reaches the dew point, condensation will occur, affecting the normal operation of the battery pack.

[0003] To address the fogging and condensation problem, many manufacturers install desiccant packs such as silica gel, calcium chloride, and bentonite in battery packs. These packs are single-use and irreversible, with a short drying and agglomeration lifespan. They become ineffective and need to be replaced after 1 to 2 months. Furthermore, battery packs are large, requiring multiple desiccant packs. These packs occupy a large space within the battery pack and come into contact with electrical components within the pack. During equipment operation, these packs can become loose due to external shock and vibration, increasing after-sales maintenance costs and posing safety risks. Summary of the Invention

[0004] The main technical problem solved by the present invention is to provide an explosion-proof valve capable of performing humidity management, maintaining internal and external pressure balance, rapid pressure relief and effective condensation control.

[0005] In order to solve the above technical problems, a technical solution adopted by the present invention is: to provide an explosion-proof valve capable of humidity management, comprising: a valve body, a reversible adsorption core, a diaphragm valve, a breathable membrane and a spring valve on the path for the circulation of air inside and outside the valve body, the air inside the valve body passes through the reversible adsorption core and is discharged from the diaphragm valve to the outside of the valve body, forming a dehumidification path; the air outside the valve body enters the valve body from the breathable membrane and enters the inside of the valve body through the reversible adsorption core, forming a balanced path; the spring valve comprises an umbrella cover plate, a connecting rod and a spring, the umbrella cover plate is connected to one end of the connecting rod, the spring is coaxially arranged on the connecting rod, and the spring is provided with an initial compression force to ensure the sealing of the spring valve. When the internal pressure increases, the internal pressure will form an outward thrust on the umbrella cover plate, which is transmitted to the spring through the connecting rod, compressing the spring while the umbrella cover plate opens to the outside, forming a direct path for the internal and external air.

[0006] In a preferred embodiment of the present invention, the spring valve is coaxially arranged on the valve body.

[0007] In a preferred embodiment of the present invention, a sealing member is provided between the umbrella cover and the valve body.

[0008] In a preferred embodiment of the present invention, a nut is provided at the other end of the connecting rod, and the spring compression force is adjusted by rotating the nut.

[0009] In a preferred embodiment of the present invention, an outer protective cover is provided on the outer surface of the diaphragm valve and the breathable membrane, and a breathable distance D is provided between the outer protective cover and the diaphragm valve and the breathable membrane.

[0010] In a preferred embodiment of the present invention, a limit block is provided between the diaphragm valve and the breathable membrane to ensure that the diaphragm valve opens smoothly.

[0011] In a preferred embodiment of the present invention, the breathable membrane is one or more combinations of ePTFE membrane, PU non-woven membrane, PE porous membrane, cellulose acetate membrane, ceramic microporous membrane and electrostatic non-woven fabric.

[0012] In a preferred embodiment of the present invention, the diaphragm valve is made of one or more combinations of rubber materials, plastic sheets and metal spring sheets.

[0013] In a preferred embodiment of the present invention, the breathable membrane and the valve body are connected by welding, bonding, or pre-tightening.

[0014] In order to solve the above technical problems, another technical solution adopted by the present invention is: to provide an application of an explosion-proof valve that can perform humidity management, which is applied to the battery pack shell or other confined spaces, and is connected by snapping, welding, riveting or threading.

[0015] The beneficial effects of the present invention are: the present invention can effectively control condensation in a battery pack or other sealed shell, maintain the balance of internal and external pressures; when the internal pressure exceeds the set limit, the spring valve opens outward under the drive of the internal pressure, so that the internal and external air are directly connected, achieving a rapid pressure relief effect; when the internal pressure is released and returns to below the set limit, the spring valve closes to keep the internal space sealed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive work, among which:

[0017] Figure 1 1. It is a structural schematic diagram of a preferred embodiment of an explosion-proof valve capable of humidity management according to the present invention;

[0018] Figure 2 yes Figure 1 A perspective view of an explosion-proof valve that can manage humidity is shown. DETAILED DESCRIPTION

[0019] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figure 1 and Figure 2 , embodiments of the present invention include:

[0021] An explosion-proof valve capable of humidity management comprises: a valve body 1, a reversible adsorption core 2, a diaphragm valve 3, a breathable membrane 5 and a spring valve 6 provided on the path for air circulation inside and outside the valve body 1.

[0022] The reversible adsorption core 2 can absorb and release moisture at room temperature, and can accelerate the release of moisture after absorbing infrared heat energy.

[0023] Air inside the valve body passes through the reversible adsorption core 2 and is discharged through the diaphragm valve 3 to the outside of the valve body, forming a dehumidification path. When the temperature inside the housing rises, the core absorbs the infrared heat energy inside the housing, releasing moisture. Driven by the internal and external pressure differential, the diaphragm valve opens and discharges the moisture to the outside of the housing.

[0024] External air enters the valve body 1 through the breathable membrane 5 and passes through the reversible adsorption core 2 into the inner side of the valve body, forming a balanced path. When the temperature inside the housing drops and negative pressure is formed, external air enters through this waterproof breathable membrane. The air is dried by the core as it passes through the valve body, preventing external moisture from entering the housing.

[0025] When the internal and external pressures are balanced, the diaphragm valve 3 is closed, preventing external water vapor from entering the shell. At the same time, the core body continuously absorbs moisture to maintain the interior of the shell in a low humidity environment.

[0026] The spring valve 6 includes an umbrella cover plate 7, a connecting rod 8 and a spring 9. The umbrella cover plate 7 is connected to one end of the connecting rod 8, and the spring 9 is coaxially arranged on the connecting rod 8. After the spring 9 is assembled, there is a certain initial compression amount. The elastic force generated by the spring 9 is transmitted to the umbrella cover plate 7 through the connecting rod 8, so that the umbrella cover plate 7 is pressed on the sealing ring to ensure that the spring valve 6 is sealed; when the internal pressure increases, the internal pressure will form an outward thrust on the umbrella cover plate 7, which is transmitted to the spring 9 through the connecting rod 8, compressing the spring and opening the umbrella cover plate to the outside, forming a direct path for internal and external air.

[0027] When the internal pressure of the space rises sharply, when the internal pressure exceeds the set limit, the spring valve opens outward under the drive of the internal pressure, allowing the air inside and outside to directly connect, achieving a rapid pressure relief effect. When the internal pressure is released and returns to below the set limit, the spring valve closes and the internal space is kept sealed by the seal.

[0028] The other end of the connecting rod 8 is provided with a nut 10, and the elastic force of the spring 9 is adjusted by rotating the nut 10. The spring of the spring valve is reasonably designed, and springs with different elastic coefficients are used to match the use requirements of different opening pressures, and the adjustment is achieved by rotating the nut.

[0029] An outer protective cover 11 is provided on the outer surfaces of the diaphragm valve 3 and the breathable membrane 5 , and a breathable distance D is provided between the outer protective cover 11 and the diaphragm valve 3 and the breathable membrane 5 .

[0030] A limit block 4 is provided between the diaphragm valve 3 and the breathable membrane 5 to ensure that the diaphragm valve opens smoothly.

[0031] The breathable membrane 5 is one or more combinations of ePTFE membrane, PU non-woven membrane, PE porous membrane, cellulose acetate membrane, ceramic microporous membrane and electrospun non-woven fabric, which ensures that air can pass through while effectively blocking liquid water from entering.

[0032] The diaphragm valve 3 is made of one or more combinations of rubber materials, plastic sheets, metal spring sheets and other elastic materials.

[0033] The breathable membrane 5 and the valve body are connected by welding, bonding or pre-tightening.

[0034] The present invention also relates to the application of an explosion-proof valve capable of performing humidity management, which is applied to a battery pack housing or other enclosed spaces and is connected by means of snapping, welding, riveting or threading.

[0035] The present invention can effectively control condensation and maintain internal and external pressure balance. When the internal pressure exceeds the set limit, the spring valve opens outward under the drive of the internal pressure, allowing the internal and external air to directly connect to achieve a rapid pressure relief effect. When the internal pressure is released and returns to below the set limit, the spring valve closes to keep the internal space sealed.

[0036] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An explosion-proof valve capable of humidity management, characterized in that: include: The valve body is provided with a reversible adsorption core, a diaphragm valve, a breathable membrane and a spring valve on the path of air circulation inside and outside the valve body. The reversible adsorption core accelerates the release of moisture after absorbing infrared heat energy in the shell; The air inside the valve body passes through the reversible adsorption core and is discharged from the diaphragm valve to the outside of the valve body, forming a moisture removal path; The air outside the valve body enters the valve body through the breathable membrane and enters the inner side of the valve body through the reversible adsorption core, forming a balanced path; the spring valve includes an umbrella cover plate, a connecting rod and a spring. The umbrella cover plate is connected to one end of the connecting rod, and the spring is coaxially arranged on the connecting rod. The spring is provided with an initial compression force to ensure the sealing of the spring valve. When the internal pressure increases, the internal pressure will form an outward thrust on the umbrella cover plate, which is transmitted to the spring through the connecting rod. The spring is compressed and the umbrella cover plate opens to the outside at the same time, forming a direct path for internal and external air.

2. The explosion-proof valve capable of humidity management according to claim 1, characterized in that: The spring valve is coaxially arranged on the valve body.

3. The explosion-proof valve capable of humidity management according to claim 2, characterized in that: A sealing member is provided between the umbrella cover plate and the valve body.

4. The explosion-proof valve capable of humidity management according to claim 1, characterized in that: A nut is provided at the other end of the connecting rod, and the spring compression force is adjusted by rotating the nut.

5. The explosion-proof valve capable of humidity management according to claim 1, characterized in that: An outer protective cover is provided on the outer surface of the diaphragm valve and the breathable membrane, and a breathable distance D is provided between the outer protective cover and the diaphragm valve and the breathable membrane.

6. The explosion-proof valve capable of humidity management according to claim 1, characterized in that: A limit block is set between the diaphragm valve and the breathable membrane to ensure that the diaphragm valve opens smoothly.

7. The explosion-proof valve capable of humidity management according to claim 1, characterized in that: The breathable membrane is one or more combinations of ePTFE membrane, PU non-woven membrane, PE porous membrane, cellulose acetate membrane, ceramic microporous membrane and electrostatic non-woven fabric.

8. The explosion-proof valve capable of humidity management according to claim 1, characterized in that: The diaphragm valve is made of one or more combinations of rubber materials, plastic sheets and metal spring sheets.

9. The explosion-proof valve capable of humidity management according to claim 1, characterized in that: The breathable membrane and the valve body are connected by welding, bonding or pre-tightening.

10. Application of the explosion-proof valve capable of humidity management according to any one of claims 1 to 9, characterized in that: Applied to battery pack housing or other confined spaces, and connected by snapping, welding, riveting or threading.

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