Explosion-proof valve, battery shell, battery pack and electric equipment

Abstract

The utility model provides an anti-explosion valve, a battery shell, a battery pack and electric equipment, and belongs to the technical field of batteries, and the anti-explosion valve comprises a main body and a waterproof exhaust assembly. The size of the through opening in the main body in the first direction is larger than that of the through opening in the second direction, the opening area of the through opening, provided with the anti-explosion valve, in the main body is fully utilized, and the exhaust and pressure relief effect is improved. The main body and the gland are connected through the guide shaft, and when the internal pressure of the battery pack is increased, the gland can be opened through the guide shaft, so that the internal environment and the external environment of the battery pack are communicated through the through hole, gas is discharged, internal pressure accumulation is reduced, and the structure of the battery pack is prevented from being damaged. The first sealing piece arranged between the gland and the main body can prevent moisture, moisture and other impurities in the external environment from entering the battery pack through the through hole when exhaust operation is not needed, and the situation that the performance of the battery in the battery pack is reduced due to invasion of foreign matters is avoided.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of battery technology, and specifically to an explosion-proof valve, a battery shell, a battery pack, and electrical equipment. Background Art

[0002] With the continuous advancement of power battery technology and the growing market demand, battery performance in new energy battery vehicles has received more and more attention. In the power battery system, explosion-proof valves, as key safety components, play a vital role, especially in preventing thermal runaway.

[0003] The explosion-proof valve is installed on the side wall of the battery pack tray to prevent the exhaust process from affecting the occupants of the vehicle. However, due to the height of the battery pack tray, the existing explosion-proof valve vent hole has poor pressure relief and exhaust effect and cannot meet the exhaust requirements. Utility Model Content

[0004] The present invention provides an explosion-proof valve, battery case, battery pack, and electrical equipment that increases the size of the through-hole on the main body to enhance exhaust efficiency. A guide shaft is used to open or close the through-hole with a gland, ensuring that the explosion-proof valve is fully open during the initial opening phase without affecting the exhaust capacity of the explosion-proof valve.

[0005] The embodiments of the present application provide the following technical solutions to solve the above technical problems:

[0006] In the first part, the embodiment of the present application provides an explosion-proof valve, including:

[0007] a main body, wherein the main body has a through opening, and a dimension of the through opening in a first direction is greater than a dimension of the through opening in a second direction;

[0008] A waterproof exhaust assembly, comprising a gland, a guide shaft, and a first sealing member, wherein the gland is provided on one side of the through-opening and the first sealing member is located between the gland and the main body;

[0009] One end of the guide shaft is connected to the side of the pressure cover facing the through-hole, and the other end of the guide shaft passes through the through-hole and is arranged on the other side of the through-hole, so that the pressure cover can close and open the through-hole through the guide shaft.

[0010] Beneficial effects of the embodiments of the present application: The explosion-proof valve provided in the embodiments of the present application includes a main body and a waterproof vent assembly. The main body has a through-hole, and the through-hole has a larger dimension in a first direction than in a second direction. The waterproof vent assembly includes a gland, a guide shaft, and a first seal. The gland is located on one side of the main body, covering and matching the through-hole. The first seal is located between the gland and the main body. One end of the guide shaft is connected to the side of the gland facing the main body, and the other end of the guide shaft passes through the through-hole and is located on the other side of the through-hole. The guide shaft enables the gland to seal and open the through-hole. Thus, the through-hole provided in the main body enables communication between the interior and exterior of the battery pack. Setting the through-hole to have a larger dimension in the first direction than in the second direction facilitates fully utilizing the opening area of ​​the through-hole provided in the main body, thereby improving the exhaust and pressure relief effect. The gland matches the through-hole of the main body, and the first seal provided between the gland and the main body ensures a tight connection. The ends of the guide shaft are connected to the main body and the gland. When the internal pressure of the battery pack increases and the explosion-proof valve initially opens, the gland opens via the guide shaft, connecting the battery pack interior with the external environment through the through-hole. This allows the explosion-proof valve to fully utilize its exhaust efficiency, more quickly and effectively discharging high-temperature, high-pressure gases, reducing internal pressure buildup and preventing damage to the battery pack structure. Furthermore, when the internal pressure of the battery pack is within the normal range, the explosion-proof valve does not require exhaust. The gland and main body are tightly coupled via the first seal, effectively preventing moisture, humidity, and other impurities from the external environment from entering the battery pack through the through-hole, thereby preventing degradation of battery performance within the battery pack due to foreign matter intrusion.

[0011] In a possible implementation manner, the first sealing component is a sealing ring matching the through-opening.

[0012] In a possible implementation manner, there are multiple guide shafts, and the multiple guide shafts are spaced apart along the first direction;

[0013] The main body and the pressure cover are connected through a plurality of guide shafts, and one end of each guide shaft is connected to the pressure cover.

[0014] In a possible implementation manner, there are two guide shafts, and the two guide shafts are symmetrically arranged along the geometric center of the through opening.

[0015] In a possible implementation, the waterproof exhaust assembly further includes an elastic member, which is sleeved on the guide shaft, and one end of the elastic member abuts against the main body.

[0016] In a possible implementation manner, a boss is provided at one end of each guide shaft, and the other end of the elastic member abuts against a surface of the boss facing the guide shaft.

[0017] In a possible embodiment, the waterproof vent assembly further includes a sleeve having an accommodating cavity therein, the guide shaft and the elastic member being located in the accommodating cavity, one end of the sleeve being connected to the main body, and the boss abutting against a bottom wall of the accommodating cavity;

[0018] The guide shaft is movably arranged in the sleeve so that the pressure cover connected to the guide shaft can close and open the through opening.

[0019] In a possible embodiment, the waterproof vent assembly further includes a support member, the support member is located in the through-hole of the main body, and the support member is connected to the inner wall of the through-hole, dividing the through-hole into a plurality of vent holes;

[0020] One end of the sleeve is connected to the support member, so that the sleeve is connected to the main body through the support member.

[0021] In a possible implementation manner, an opening corresponding to the guide shaft is formed on the support member, and the guide shaft passes through the opening and is connected to the pressure cover.

[0022] In a possible implementation, the waterproof vent assembly further includes a second sealing member, the second sealing member being located on a side of the main body facing away from the gland and located on the periphery of the through opening;

[0023] The second sealing member is a sealing ring that matches the through-hole.

[0024] In a possible embodiment, the main body is provided with a first groove and a second groove, the first groove is provided on a surface of the main body facing the gland and along the outer periphery of the through-opening, and the first sealing member is located in the first groove;

[0025] The second groove is arranged on a surface of the main body facing away from the gland and along the outer periphery of the through-hole, and the second sealing member is located in the second groove.

[0026] In a possible implementation manner, a convex step is provided on the main body, the convex step is arranged on a surface of the main body facing the gland, and the first groove is located on the convex step.

[0027] In a possible embodiment, the main body is provided with a plurality of mounting holes, and the plurality of mounting holes are located around the through opening;

[0028] And / or, a card slot is provided on the main body, the card slot is located on opposite sides of the main body, and the card slot is used to fix the main body.

[0029] In the second part, an embodiment of the present application provides a battery case, comprising:

[0030] A shell, and the explosion-proof valve, wherein the explosion-proof valve is located on the side wall of the shell.

[0031] In the third part, an embodiment of the present application provides a battery pack, including:

[0032] A battery pack, a housing, and the aforementioned explosion-proof valve, wherein the battery pack is located within the housing, and the explosion-proof valve is located on the outer wall of the housing and is sealed with the housing;

[0033] Alternatively, it comprises a battery pack and the above-mentioned battery case, wherein the battery pack is located in the shell of the battery case.

[0034] In the fourth part, an embodiment of the present application provides an electric device, including:

[0035] An electric device and the above-mentioned battery pack, wherein the battery pack is used to provide electric energy to the electric device.

[0036] In addition to the technical problems solved by the present application, the technical features that constitute the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that can be solved by an explosion-proof valve, battery shell, battery pack and electrical equipment provided by the present application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the embodiments of the present application or the description of the prior art. Obviously, the drawings described below are only part of the embodiments of the present application. These drawings and text descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application for those skilled in the art by referring to specific embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0038] Figure 1 A schematic diagram of the installation of an explosion-proof valve provided in an embodiment of the present application;

[0039] Figure 2 A schematic diagram of the structure of the explosion-proof valve provided in an embodiment of the present application;

[0040] Figure 3 An exploded view of an explosion-proof valve provided in an embodiment of the present application;

[0041] Figure 4 A cross-sectional view of an explosion-proof valve provided in an embodiment of the present application.

[0042] Description of reference numerals:

[0043] 100 - main body; 110 - through opening; 120 - convex step; 130 - first groove; 140 - second groove; 150 - mounting hole; 160 - slot;

[0044] 200-waterproof exhaust assembly; 210-pressure cover;

[0045] 300-guide shaft; 310-boss;

[0046] 400-elastic parts;

[0047] 500-sleeve; 510-accommodation chamber;

[0048] 600-support member; 610-vent; 620-opening;

[0049] 700-first seal;

[0050] 800-second seal;

[0051] 900-shell. DETAILED DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0053] An embodiment of the present application provides an electrical device, which includes an electrical device and a battery pack, wherein the battery pack provides electrical energy to the electrical device. For example, the electrical device can be a vehicle or an energy storage device. When the electrical device is a vehicle, the vehicle can be a new energy vehicle (NEV), such as a pure electric vehicle (PEV / BEV), a range-extended electric vehicle (REEV), a hybrid electric vehicle (HEV), or a fuel cell electric vehicle. The vehicle can also be any vehicle with a battery.

[0054] The electrical device can also be a motor, control system, lighting system, etc. When the electrical device is an energy storage device, it can be an inverter, controller, etc. The battery pack can include multiple batteries. In one possible implementation, the battery can be cylindrical, or it can be a prismatic, or it can have multiple cells inside. Multiple batteries are connected and controlled by a specific control system to store and output electrical energy. The battery pack or batteries can provide the electrical device with the energy required for normal operation of the device.

[0055] A battery can be a primary battery or a secondary battery. A primary battery is a battery that cannot be restored to its usable state by recharging after completing the discharge process. A secondary battery is a type of battery that can be recharged to activate its internal active materials after completing the discharge process, allowing it to continue to be used. The battery can be a lithium-ion battery, a sodium-ion battery, a lithium-sulfur battery, etc., and the battery can be in the form of a square shell, a cylindrical shell, a soft pack, or other shapes.

[0056] For example, Figure 1 and Figure 2 As shown, the battery pack is located in the housing 900, which is composed of multiple batteries. The explosion-proof valve is installed on the side wall of the housing 900. When the battery pressure in the housing 900 increases abnormally, the pressure is quickly released through the explosion-proof valve, which can effectively prevent the battery from being damaged or causing safety problems due to overpressure. The explosion-proof valve is connected to the side wall of the housing 900 by bolt fasteners. The bolt fasteners can pass through the mounting holes 150 on the main body 100 to ensure that the main body 100 of the explosion-proof valve is matingly connected to the side wall of the housing 900. A second seal 800 is provided between the explosion-proof valve and the housing 900 to effectively prevent gas or liquid from leaking in the small gap between the explosion-proof valve and the side wall of the housing 900, thereby ensuring the safety and reliability of the entire battery system.

[0057] The embodiment of the present application provides an explosion-proof valve, such as Figures 2 to 4 As shown, it includes a main body 100 and a waterproof exhaust assembly 200. The main body 100 has a through-hole 110, and the size of the through-hole 110 in the first direction is larger than the size of the through-hole 110 in the second direction. The waterproof exhaust assembly 200 includes a gland 210, a guide shaft 300 and a first sealing member 700. The gland 210 is located on one side of the main body 100, and the gland 210 is arranged on the through-hole 110 and matches the through-hole 110. One end of the guide shaft 300 is connected to the side of the gland 210 facing the main body 100, and the guide shaft 300 and the main body 100 are telescopically connected. The first sealing member 700 is located between the gland 210 and the main body 100.

[0058] In the embodiments of the present application, for the convenience of description, Figure 1 As shown, the length direction of the main body 100 (the extension direction of the side wall of the shell 900) is the Y-axis, for example, it can be the first direction, and the width direction of the main body 100 (the height direction of the shell 900) is the Z-axis, for example, it can be the second direction. That is to say, the first direction is the length direction of the through-opening 110, and the second direction is the width direction of the through-opening 110. It can be understood that the coordinate system setting can be flexibly set according to specific needs. It should be noted that the first direction and the second direction can be the same or different. In the example of the present application, the first direction and the second direction are different (for example, the first direction is perpendicular to the second direction) as an example for explanation. In some examples, the first direction and the second direction may also be the same.

[0059] The main body 100 is the main supporting structure of the explosion-proof valve, and a through-hole 110 is provided on the main body 100. The through-hole 110 is the main channel for gas to pass through. When the air pressure inside the battery pack shell 900 or the battery shell increases, the gas can be discharged from the through-hole 110 to release the pressure.

[0060] It should be noted that the first direction may be the extension direction of the sidewall of the housing 900, and the second direction is the height direction of the housing 900, and the second direction is perpendicular to the first direction. The dimension of the through-opening 110 in the first direction is larger than the dimension in the second direction, which can increase the area of ​​the through-opening 110 on the main body 100, help optimize the flow path of the fluid, and ensure pressure release.

[0061] The gland 210 is located on one side of the main body 100 and covers one side of the through-hole 110. The shape and size of the gland 210 must match the through-hole 110. The gland 210 cooperates with the main body 100 and, through the first seal 700 disposed between the gland 210 and the main body 100, achieves a sealing effect. When the air pressure in the housing 900 is normal, it effectively prevents moisture, dust, and other impurities in the external environment from entering the housing 900. It also prevents electrolyte leaking from the battery in the housing 900 from leaking into the external environment.

[0062] One end of the guide shaft 300 is connected to the surface of the gland 210 facing the main body 100. The other end of the guide shaft 300 is inserted into the through-hole 110 of the main body 100 and is disposed on the other side of the through-hole 110. The guide shaft 300 allows the gland 210 to seal and open the through-hole 110. When the pressure in the housing 900 changes, the guide shaft 300 supports the gland 210, allowing it to move relative to the main body 100, thereby releasing or regulating the pressure inside the housing 900 and preventing an explosion caused by excessive pressure.

[0063] It is understood that when the pressure within the housing 900 is normal, the explosion-proof valve's gland 210 fits tightly against the main body 100, maintaining a sealed state via the first seal 700. When the pressure within the housing 900 abnormally rises due to charging, discharging, or changes in external conditions, the explosion-proof valve automatically opens. The gland 210 shifts, allowing the gas or fluid within the housing 900 to be rapidly released into the external environment through the explosion-proof valve's through-port 110, thereby preventing damage to the housing 900 or safety issues caused by excessive internal pressure.

[0064] In some embodiments of the present application, Figure 2 and Figure 3 As shown, the inner edge of the through-opening 110 has a racetrack-shaped structure, and the first sealing member 700 is a sealing ring with a racetrack-shaped structure that matches the racetrack structure. It is understood that the racetrack-shaped through-opening 110 can increase the diameter of the passage for fluid to pass through the explosion-proof valve, and the smooth arc-shaped transition of the edge of the through-opening 110 can enhance the strength and stability of the structure.

[0065] It is understood that to ensure the sealing effect of the sealing valve, the first sealing member 700 can also be configured as a sealing ring with a racetrack structure. The first sealing member 700 can closely fit the inner edge of the through-opening 110 to ensure a good seal between the gland 210 and the through-opening 110. Furthermore, the racetrack-shaped sealing ring can more evenly distribute stress when subjected to pressure, reducing local stress concentration and improving the durability and reliability of the first sealing member 700.

[0066] It should be noted that the through-port 110 and the first seal 700 can be runway-shaped, but are not limited to the runway shape. For example, the through-port 110 and the first seal 700 can also be configured as a rectangle, with chamfering treatment at the edge transition to ensure a smooth transition and meet the strength and stability of the structural design.

[0067] In some embodiments of the present application, Figures 2 to 4 As shown, there are multiple guide shafts 300, and the multiple guide shafts 300 are spaced apart along the first direction. The main body 100 is connected to the pressure cover 210 through multiple guide shafts 300, and one end of each guide shaft 300 is connected to the pressure cover 210. The number of guide shafts 300 can be two or three, etc. The embodiment of the present application is described by taking the example of setting two guide shafts 300 and the pressure cover 210 in a runway shape. It is understandable that when the size of the through-port 110 of the main body 100 is increased, the corresponding size of the pressure cover 210 should be consistent with the size of the through-port 110, or even slightly larger than the size of the through-port 110, to ensure the sealing effect of the explosion-proof valve when it is not opened. However, when using a large-sized pressure cover 210 and a single guide shaft 300, there may be a situation where the single guide shaft 300 cannot completely push open the pressure cover 210 when the valve is initially opened.

[0068] Compared to providing a single guide shaft 300, providing multiple guide shafts 300 can provide more stable and uniform support for the gland 210, ensuring that the gland 210 can move along a predetermined trajectory and prevent it from deviating from its direction. Multiple guide shafts 300 can also support the gland 210 at multiple points, making it more stable when moving or under pressure, less likely to deflect or shake, allowing the gland 210 to be fully opened, ensuring smooth opening of the explosion-proof valve.

[0069] The two guide shafts 300 are spaced apart along the first direction, and the positions where the two guide shafts 300 connect to the gland 210 are symmetrically arranged, but the arrangement is not limited to symmetrical and an asymmetrical arrangement can also be adopted. In one possible implementation, the gland 210 is runway-shaped, with the first direction of the gland 210 being the long axis and the second direction of the gland 210 being the short axis. The long axis has semicircular or arc-shaped ends and a straight or approximately straight middle portion. The two guide shafts 300 are arranged at the center of the semicircular or arc-shaped ends of the long axis.

[0070] In some embodiments of the present application, Figure 3 and Figure 4As shown, the explosion-proof valve also includes an elastic member 400, which is sleeved on the guide shaft 300, and one end of the elastic member 400 is in contact with the main body 100. The elastic member 400 can be a spring that acts as a buffer. When the gas pressure inside the shell 900 increases, the elastic member 400 can absorb part of the impact energy. Only when the gas pressure inside the shell 900 rises to the preset detonation pressure can the pressure cover 210 move. The elastic member 400 can also ensure sealing. When the battery pack is in daily use, the pressure cover 210 and the main body 100 may be affected by pressure or vibration. The elastic member 400 can produce a slight deformation to fill the gap between the pressure cover 210 and the main body 100, thereby enhancing the sealing effect.

[0071] It is understood that the elastic member 400 is sleeved on the guide shaft 300, and the other end of the elastic member 400 abuts against the boss 310 at one end (which can be the bottom or top end) of the guide shaft 300, and the other end of the elastic member 400 abuts against the support member 600 of the main body 100, so that the elastic member 400 can continuously provide a pre-tightening force for the gland 210 toward the interior of the housing 900, ensuring that the sealing surface between the gland 210 and the main body 100 remains in a tight fit to prevent gas or liquid leakage. It should be noted that the dimensions of the elastic member 400, such as the radius of the spring and the number of coils of the spring, are not limited here and can be adjusted according to actual needs.

[0072] In some embodiments of the present application, Figures 2 to 4 As shown, the explosion-proof valve also includes a sleeve 500, which has an internal accommodating chamber 510. The guide shaft 300 and the elastic member 400 are located within the accommodating chamber 510. One end of the sleeve 500 is connected to the main body 100, and the boss 310 abuts the bottom wall of the accommodating chamber 510. In this way, the sleeve 500 can protect the guide shaft 300 and the elastic member 400 from adverse factors such as dust, moisture, and corrosive substances, thereby extending their service life. One end of the sleeve 500 is connected to the support member 600 of the main body 100, providing stable support for the guide shaft 300. The abutment between the boss 310 and the bottom wall of the accommodating chamber 510 enhances the stability and rigidity of the guide shaft 300, ensuring the normal operation of the guide shaft 300 and the elastic member 400 under high pressure.

[0073] In one possible implementation, the gas pressure inside the housing 900 rises to the detonation pressure, causing the gas to push open the gland 210. This allows the interior of the housing 900 to communicate with the external environment through the through-hole 110, allowing for gas and pressure relief. When the gas pressure inside the housing 900 drops, the gland 210 automatically returns to its original position due to the preload force of the elastic member 400, re-sealing the gland 210 against the main body 100.

[0074] In some embodiments of the present application, Figures 2 to 4As shown, the explosion-proof valve further includes a support member 600, which is located within the through-hole 110 of the main body 100 and is connected to the inner wall of the through-hole 110, dividing the through-hole 110 into a plurality of air holes 610. One end of the sleeve 500 is connected to the support member 600, so that the sleeve 500 is connected to the main body 100 through the support member 600.

[0075] The support member 600 is located within the through-hole 110 of the main body 100. The support member 600 is tightly connected to the inner wall of the through-hole 110, dividing the through-hole 110 into a plurality of air holes 610. The air holes 610 ensure smooth flow of gas within the housing 900 and also act as flow limiters, helping to control the speed and amount of gas release and prevent other problems caused by excessive gas release from the housing 900. The support member 600 also enhances the structural stability of the main body 100, supporting the main body 100 and the sleeve 500 to prevent deformation or damage in high-pressure environments.

[0076] In the embodiment of the present application, the support member 600 is in the shape of an I-shaped letter "I," and its four ends are connected to the inner wall of the through-opening 110. However, the support member 600 is not limited to this shape and may also have other shapes, such as a rectangle, a mesh, or a honeycomb. The support member 600 divides the through-opening 110 into four ventilation holes 610. The number and size of the ventilation holes 610 can be adjusted according to actual needs and will not be described in detail here.

[0077] In some embodiments of the present application, Figure 3 and Figure 4 As shown, the support member 600 is provided with an opening 620 corresponding to the guide shaft 300, and the guide shaft 300 passes through the opening 620 and is connected to the gland 210. Thus, the opening 620 serves as a guide, helping to ensure that the gland 210 can move smoothly along a predetermined path under the action of the guide shaft 300. When the gas pressure inside the housing 900 increases, the gland 210 will be subjected to a thrust, and the guide shaft 300 passing through the opening 620 can limit the movement trajectory of the gland 210, preventing the gland 210 from deviating from the predetermined path.

[0078] It should be noted that the size and shape of the opening 620 can match the size and shape of the guide shaft 300 to ensure that the guide shaft 300 can pass through smoothly. In the embodiment of the present application, the cross-sections of the guide shaft 300 and the opening 620 are both circular, but are not limited to circles. For example, they can also be other shapes, as long as they meet the normal operation of the elastic part 400. There is no restriction here.

[0079] In some embodiments of the present application, Figure 3 and Figure 4As shown, the explosion-proof valve further includes a second sealing member 800, which is located on the side of the main body 100 facing away from the gland 210 and on the periphery of the through-opening 110. It is understood that the second sealing member 800 can be a sealing ring with a racetrack-shaped structure, but is not limited to a racetrack-shaped structure and can be of any shape as long as it ensures a seal between the explosion-proof valve shield and the battery pack housing 900. This will not be described in detail here.

[0080] In some embodiments of the present application, Figure 4 As shown, the main body 100 is provided with a first groove 130 and a second groove 140. The first groove 130 is provided on the side of the main body 100 facing the gland 210 and is arranged along the outer periphery of the through-opening 110. The first sealing member 700 is located in the first groove 130. The second groove 140 is provided on the side of the main body 100 facing away from the gland 210 and is arranged along the outer periphery of the through-opening 110. The second sealing member 800 is located in the second groove 140.

[0081] It is understood that the first groove 130 is provided on the side of the main body 100 facing the gland 210. The first groove 130 can provide stable positioning for the first sealing member 700 and prevent the first sealing member 700 from shifting. When the gland 210 is tightly fitted with the main body 100, the first sealing member 700 in the first groove 130 is squeezed, which is conducive to the seal between the main body 100 and the gland 210.

[0082] The second groove 140 is provided on the side of the main body 100 facing away from the gland 210. The second groove 140 provides a secure position for the second sealing member 800, preventing the second sealing member 800 from shifting and affecting the sealing effect between the main body 100 and the housing 900. When the main body 100 and the housing 900 are tightly fitted, the second sealing member 800 is squeezed in the second groove 140, which facilitates the sealing between the main body 100 and the housing 900.

[0083] In some embodiments of the present application, Figure 3 and Figure 4As shown, the main body 100 is provided with a convex step 120, which is arranged on the side of the main body 100 facing the gland 210, and the first groove 130 is located on the convex step 120. It can be understood that by providing the convex step 120 and the first groove 130 on the convex step 120, the first sealing member 700 can be raised. When the gland 210 and the main body 100 are tightly matched, the first sealing member 700 located in the first groove 130 of the convex step 120 is squeezed and tightly fits between the convex step 120 and the gland 210, ensuring a sealing effect. It should be noted that the top surface of the support member 600 is lower than the top surface of the convex step 120, so that the top surface of the support member 600 and the side of the gland 210 facing the main body 100 will not interfere with each other, thereby affecting the sealing between the gland 210 and the main body 100.

[0084] In some embodiments of the present application, Figure 2 and Figure 3 As shown, the main body 100 is provided with a plurality of mounting holes 150, which are located around the through-opening 110. The main body 100 is provided with a retaining groove 160, located on opposite sides of the main body 100, for securing the main body 100. Before use, the explosion-proof valve requires airtightness testing, and the retaining groove 160 is used to connect testing equipment to the main body 100.

[0085] In the embodiment of the present application, the number of mounting holes 150 is four, and the mounting holes 150 are located on the peripheral side of the through-opening 110. The mounting holes 150 are used in conjunction with bolt fasteners or other connectors to securely mount the explosion-proof valve on the side wall of the housing 900. In this way, the explosion-proof valve can be prevented from loosening or falling off during long-term use. It should be noted that the number of mounting holes 150 can be four but is not limited to four. For example, it can also be two, three, or five. The shape of the mounting hole 150 can be circular but is not limited to a circular shape. For example, it can also be any other shape, which will not be described in detail here.

[0086] Among them, the terms "upper" and "lower" are used to describe the relative position relationship of each structure in the accompanying drawings, which is only for the convenience of description and is not used to limit the scope of implementation of this application. Changes or adjustments to their relative relationships should also be regarded as the scope of implementation of this application without substantially changing the technical content.

[0087] It should be noted that, in this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0088] Furthermore, in this application, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," "fixed," and the like should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; they may refer to direct connection or indirect connection through an intermediate medium; they may refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0089] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0090] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An explosion-proof valve, characterized in that: include: A main body (100), wherein the main body (100) has a through-opening (110), and the size of the through-opening (110) in a first direction is greater than the size of the through-opening (110) in a second direction; A waterproof exhaust assembly (200), comprising a gland (210), a guide shaft (300), and a first sealing member (700), wherein the gland (210) is provided on one side of the through-opening (110), and the first sealing member (700) is located between the gland (210) and the main body (100); One end of the guide shaft (300) is connected to a side of the pressure cover (210) facing the through-opening (110), and the other end of the guide shaft (300) is passed through the through-opening (110) and is arranged on the other side of the through-opening (110). The pressure cover (210) is used to seal and open the through-opening (110) through the guide shaft (300).

2. The explosion-proof valve according to claim 1, characterized in that: The first sealing member (700) is a sealing ring that matches the through opening (110).

3. The explosion-proof valve according to claim 1 or 2, characterized in that: There are multiple guide shafts (300), and the multiple guide shafts (300) are arranged at intervals along the first direction.

4. The explosion-proof valve according to claim 3, characterized in that: The number of the guide shafts (300) is two, and the two guide shafts (300) are symmetrically arranged along the geometric center of the through opening (110).

5. The explosion-proof valve according to claim 1, characterized in that: The waterproof exhaust assembly (200) further comprises an elastic member (400), wherein the elastic member (400) is sleeved on the guide shaft (300), and one end of the elastic member (400) is in contact with the main body (100).

6. The explosion-proof valve according to claim 5, characterized in that: A boss (310) is provided at one end of each guide shaft (300), and the other end of the elastic member (400) abuts against a surface of the boss (310) facing the guide shaft (300).

7. The explosion-proof valve according to claim 6, characterized in that: The waterproof exhaust assembly (200) further comprises a sleeve (500), wherein the sleeve (500) has an accommodating cavity (510) therein, the guide shaft (300) and the elastic member (400) are located in the accommodating cavity (510), and one end of the sleeve (500) is connected to the main body (100), and the boss (310) abuts against the bottom wall of the accommodating cavity (510); The guide shaft (300) is movably arranged in the sleeve (500), so that the pressure cover (210) connected to the guide shaft (300) can close and open the through opening (110).

8. The explosion-proof valve according to claim 7, characterized in that: The waterproof exhaust assembly (200) further comprises a support member (600), wherein the support member (600) is located in the through-hole (110) of the main body (100), and the support member (600) is connected to the inner wall of the through-hole (110), dividing the through-hole (110) into a plurality of air holes (610); One end of the sleeve (500) is connected to the support member (600), so that the sleeve (500) is connected to the main body (100) through the support member (600).

9. The explosion-proof valve according to claim 8, characterized in that: The support member (600) is provided with an opening (620) corresponding to the guide shaft (300), and the guide shaft (300) passes through the opening (620) and is connected to the pressure cover (210).

10. The explosion-proof valve according to claim 1, characterized in that: The waterproof exhaust assembly (200) further includes a second sealing member (800), the second sealing member (800) being located on a side of the main body (100) facing away from the gland (210) and being located on the periphery of the through-opening (110); The second sealing member (800) is a sealing ring that matches the through opening (110).

11. The explosion-proof valve according to claim 10, characterized in that: The main body (100) is provided with a first groove (130) and a second groove (140), wherein the first groove (130) is provided on a surface of the main body (100) facing the gland (210) and is provided along the outer periphery of the through-opening (110), and the first sealing member (700) is located in the first groove (130); The second groove (140) is arranged on a surface of the main body (100) facing away from the pressure cover (210) and along the outer periphery of the through opening (110), and the second sealing member (800) is located in the second groove (140).

12. The explosion-proof valve according to claim 11, characterized in that: A convex step (120) is provided on the main body (100), the convex step (120) is arranged on a surface of the main body (100) facing the pressure cover (210), and the first groove (130) is located on the convex step (120).

13. The explosion-proof valve according to claim 10 or 11, characterized in that: The main body (100) is provided with a plurality of mounting holes (150), and the plurality of mounting holes (150) are located around the through opening (110); And / or, a card slot (160) is provided on the main body (100), the card slot (160) is located on opposite sides of the main body (100), and the card slot (160) is used to fix the main body (100).

14. A battery case, characterized in that: include: A shell (900), and the explosion-proof valve according to any one of claims 1 to 13, wherein the explosion-proof valve is located on the side wall of the shell (900).

15. A battery pack, characterized in that: include: A battery pack, a housing (900), and an explosion-proof valve according to any one of claims 1 to 13, wherein the battery pack is located in the housing (900), and the explosion-proof valve is located on the outer wall of the housing (900) and is sealed to the housing (900); Alternatively, it comprises a battery pack and the battery case according to claim 14, wherein the battery pack is located within the housing (900) of the battery case.

16. An electrical device, characterized in that: include: An electric device, and the battery pack as claimed in claim 15, wherein the battery pack is used to provide electrical energy to the electric device.

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