Explosion-proof battery shell and explosion-proof battery

Abstract

The utility model relates to an explosion-proof battery shell and an explosion-proof battery. The explosion-proof battery shell comprises a main shell with a cavity, an outer cover plate covering an opening of the cavity, a fixed cover plate arranged in the cavity and positioned below the outer cover plate, and a movable cover plate arranged in the cavity and positioned below the fixed cover plate, a limiting convex ring, a first annular protrusion and a second annular protrusion are sequentially arranged on the side wall of the cavity from top to bottom, the first annular protrusion and the second annular protrusion are distributed at intervals, and a limiting sliding wall is arranged between the first annular protrusion and the second annular protrusion. The end of the movable cover plate abuts against the limiting sliding wall, and the movable cover plate can move up and down along the limiting sliding wall under the action of air pressure in the cavity. When the internal pressure of the battery is overhigh, the movable cover plate can automatically move upwards, so that the explosion risk caused by overhigh pressure is reduced, the internal pressure of the battery can be effectively prevented from being out of control, the explosion risk of the battery is reduced, and a powerful guarantee is provided for safe use of the battery.

Description

Technical Field

[0001] The utility model relates to the field of batteries, and in particular to an explosion-proof battery housing and an explosion-proof battery. Background Art

[0002] In the field of battery technology, effective management of internal pressure is one of the core challenges to ensure safe operation of batteries. If the imbalance of internal pressure in the battery is not properly controlled, it may cause serious safety accidents, such as battery overheating, fire or even explosion, posing a huge threat to people's life and property safety. Therefore, the development of an efficient internal pressure management solution is crucial to improving the overall performance and reliability of the battery. How to achieve effective management of the internal pressure of the battery is an important research direction for batteries. Utility Model Content

[0003] In view of this, the utility model provides an explosion-proof battery housing, in which the end of the movable cover plate abuts against the limiting sliding wall, so that the movable cover plate can move up and down along the sliding wall under the action of the air pressure in the cavity. When the internal pressure of the battery is too high, the movable cover plate can automatically move upward, thereby reducing the risk of explosion caused by excessive pressure, and can effectively prevent the internal pressure of the battery from getting out of control, reducing the risk of battery explosion, and providing a strong guarantee for the safe use of the battery.

[0004] The purpose of the utility model is achieved through the following technical solutions:

[0005] An explosion-proof battery shell comprises a main shell having a cavity, an outer cover plate covering an opening of the cavity, a fixed cover plate arranged in the cavity and located below the outer cover plate, and a movable cover plate arranged in the cavity and located below the fixed cover plate, wherein a limiting convex ring, a first annular protrusion and a second annular protrusion are sequentially arranged on the side wall of the cavity from top to bottom, the first annular protrusion and the second annular protrusion are arranged at intervals, a limiting sliding wall is arranged between the first annular protrusion and the second annular protrusion, an end of the movable cover plate abuts against the limiting sliding wall, and the movable cover plate can move up and down along the limiting sliding wall under the action of air pressure in the cavity.

[0006] The side wall of the cavity is provided with a limited convex ring, a first annular protrusion and a second annular protrusion from top to bottom, the first annular protrusion and the second annular protrusion are spaced apart, and a limited sliding wall is provided between the two. The end of the movable cover plate abuts against the limited sliding wall, so that the movable cover plate can move up and down along the sliding wall under the action of the air pressure in the cavity. When the internal pressure of the battery is too high, the movable cover plate can automatically move upward, thereby reducing the risk of explosion caused by excessive pressure. Such a design not only ensures the stability of the movable cover plate under normal working conditions, but also allows the internal pressure to be quickly released under abnormal conditions. The setting of the outer cover plate not only seals the cavity and prevents the intrusion of external substances, but also can serve as an additional safety barrier to prevent the leakage of internal substances when necessary. The use of the fixed cover plate and the movable cover plate realizes the precise control of the internal environment of the battery, and also provides convenience for the maintenance and replacement of the battery. The design of this explosion-proof battery shell not only improves the safety of the battery, but also takes into account the convenience of operation and the economy of maintenance. Through reasonable structural design, the explosion-proof battery casing can effectively prevent the runaway pressure inside the battery, reduce the risk of battery explosion, and provide strong protection for the safe use of the battery.

[0007] Preferably, a wave-shaped protrusion is dug on the inner wall of the position-limiting sliding wall, and a matching protrusion that fits with the wave-shaped protrusion is provided on the end of the movable cover plate.

[0008] The inner wall of the limited sliding wall is designed with wavy protrusions, which provides a more precise and reliable mechanism for the positioning and movement of the movable cover. These wavy protrusions are similar to lock buckles. When the matching protrusions of the movable cover come into contact with them, they can produce a stable mechanical bite, ensuring that the cover will not flip over at a large angle and fall off when the pressure inside the battery changes. Moreover, it can move parallel to the pressure fluctuation without flipping, achieving a pressure relief effect and ensuring the stability of the internal air pressure of the battery. In addition, the design of the wavy protrusions also increases the contact area, helps to disperse the pressure, and reduces local stress concentration, thereby extending the service life of the movable cover and the limited sliding wall.

[0009] Preferably, a first conductive column is connected to the outer cover plate, the lower part of the first conductive column is connected to the fixed cover plate, and a second conductive column is connected to the movable cover plate. The first conductive column and the second conductive column are electrically connected through a wire, the first conductive column is threadedly connected to the outer cover plate and the fixed cover plate, and the second conductive column is threadedly connected to the movable cover plate.

[0010] The outer cover is connected to a first conductive column, the lower part of which is connected to the fixed cover, and the movable cover is connected to a second conductive column, which are electrically connected to each other through a wire. This design realizes the electrical connection inside the battery and provides a safe conductive path. The threaded connection between the first conductive column and the second conductive column ensures the stability and reliability of the electrical connection, and maintains good contact even in the case of vibration or temperature changes.

[0011] Preferably, a spring is connected between the movable cover plate and the fixed cover plate.

[0012] The design of a spring connected between the movable cover and the fixed cover adds dynamic adjustment capabilities to the sealing system of the battery housing. As an elastic element, the spring can provide the necessary reaction force when the internal pressure of the battery changes, ensuring that the movable cover is always tightly fitted on the fixed cover, thereby maintaining a good sealing effect. This design enables the battery housing to adapt to different working environments, such as temperature changes, vibrations, etc., to ensure that the gas inside the battery will not leak, while also preventing external impurities from entering. The elastic properties of the spring also help absorb and alleviate pressure fluctuations inside the battery, reduce mechanical damage caused by sudden pressure changes, and extend the service life of the battery housing. In addition, the presence of the spring makes the movable cover move more smoothly, improving the stability of the movable cover in regulating the internal air pressure of the battery.

[0013] Preferably, a first slot is dug on the lower surface of the fixed cover plate, a second slot is dug on the upper surface of the movable cover plate, and one end of the spring is clamped in the first slot and the other end is clamped in the second slot.

[0014] A first slot is dug on the lower surface of the fixed cover plate, and a second slot is dug on the upper surface of the movable cover plate. The design in which one end of the spring is connected to the first slot and the other end is connected to the second slot realizes a firm connection between the spring and the cover plate.

[0015] Preferably, the outer cover plate is arranged above the limiting convex ring.

[0016] The outer cover plate is arranged above the limiting convex ring, which not only provides an additional protective layer to prevent foreign substances from corroding the inside of the battery, but also enhances the structural strength of the entire shell.

[0017] Preferably, the limiting protrusion and the first annular protrusion are spaced apart, and the fixed cover plate is installed at the gap between the limiting protrusion and the first annular protrusion.

[0018] The design of the spacing between the limiting convex ring and the first annular protrusion provides a precise positioning point for the installation of the fixed cover plate, ensuring that the fixed cover plate can be firmly installed in the predetermined position while leaving enough space to accommodate the movable cover plate. The fixed cover plate is installed in the gap between the limiting convex ring and the first annular protrusion, further enhancing the structural integrity of the battery housing. The position of the fixed cover plate not only ensures the stability of the internal components of the battery, but also provides an additional layer of protection when the battery is subjected to external impact, reducing damage to the internal components.

[0019] Preferably, the first annular protrusion, the second annular protrusion and the limiting sliding wall are integrally formed and connected.

[0020] The design of the first annular protrusion, the second annular protrusion, and the limiting sliding wall are integrally molded to achieve the integrated production of components, improving production efficiency and product quality. This integrated design reduces the assembly steps in the production process, reduces potential failure points, and improves the overall reliability of the product. At the same time, the one-piece structure also makes the fit between the components tighter and improves the sealing performance. This design also simplifies the maintenance and replacement process, because when a component needs to be replaced, the entire one-piece component can be directly replaced without disassembling each component separately.

[0021] The utility model also provides an explosion-proof battery, comprising the explosion-proof battery housing as described above.

[0022] Compared with the prior art, the utility model has the following beneficial effects:

[0023] The explosion-proof battery housing of the utility model has a limited convex ring, a first annular protrusion and a second annular protrusion arranged in sequence from top to bottom on the side wall of the cavity, the first annular protrusion and the second annular protrusion are spaced and arranged, and a limited sliding wall is arranged between the two, and the end of the movable cover plate abuts against the limited sliding wall, so that the movable cover plate can move up and down along the sliding wall under the action of the air pressure in the cavity, and when the internal pressure of the battery is too high, the movable cover plate can automatically move upward, thereby reducing the risk of explosion caused by excessive pressure. Such a design not only ensures the stability of the movable cover plate under normal working conditions, but also allows the internal pressure to be quickly released under abnormal conditions. The setting of the outer cover plate not only seals the cavity and prevents the intrusion of external substances, but also can serve as an additional safety barrier to prevent the leakage of internal substances when necessary. The coordinated use of the fixed cover plate and the movable cover plate realizes the precise control of the internal environment of the battery, and also provides convenience for the maintenance and replacement of the battery. The design of this explosion-proof battery housing not only improves the safety of the battery, but also takes into account the convenience of operation and the economy of maintenance. Through reasonable structural design, the explosion-proof battery casing can effectively prevent the runaway pressure inside the battery, reduce the risk of battery explosion, and provide strong protection for the safe use of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 This is a structural diagram of an explosion-proof battery housing according to an embodiment of the present utility model.

[0026] Figure 2 for Figure 1 Magnified view of area A.

[0027] Figure 3 for Figure 2 Magnified view of area B. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0030] It should be noted that similar numbers and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of the embodiments of the present application, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", etc. is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the application product is usually placed when in use, or the orientation or position relationship commonly understood by those skilled in the art, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0031] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0032] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0033] The present embodiment provides an explosion-proof battery shell, comprising a main shell 100 having a cavity, an outer cover plate 200 covering the opening of the cavity, a fixed cover plate 300 arranged in the cavity and located below the outer cover plate 200, and a movable cover plate 400 arranged in the cavity and located below the fixed cover plate 300. The side wall of the cavity is provided with a limiting protrusion 510, a first annular protrusion 520 and a second annular protrusion 530 in sequence from top to bottom. The first annular protrusion 520 and the second annular protrusion 530 are distributed at intervals, and a limiting sliding wall 540 is provided between the first annular protrusion 520 and the second annular protrusion 530. The end of the movable cover plate 400 abuts against the limiting sliding wall 540 and the movable cover plate 400 can move up and down along the limiting sliding wall 540 under the action of the air pressure in the cavity.

[0034] The side wall of the cavity is provided with a limited position convex ring 510, a first annular protrusion 520 and a second annular protrusion 530 from top to bottom, the first annular protrusion 520 and the second annular protrusion 530 are spaced apart, and a limited position sliding wall 540 is provided between the two. The end of the movable cover plate 400 abuts against the limited position sliding wall 540, so that the movable cover plate 400 can move up and down along the sliding wall under the action of the air pressure in the cavity. When the internal pressure of the battery is too high, the movable cover plate 400 can automatically move upward, thereby reducing the risk of explosion caused by excessive pressure. Such a design not only ensures the stability of the movable cover plate 400 under normal working conditions, but also allows the internal pressure to be quickly released under abnormal conditions. The setting of the outer cover plate 200 not only seals the cavity and prevents the intrusion of external substances, but also can serve as an additional safety barrier to prevent the leakage of internal substances when necessary. The use of the fixed cover plate 300 and the movable cover plate 400 realizes the precise control of the internal environment of the battery, and also provides convenience for the maintenance and replacement of the battery. The design of this explosion-proof battery housing not only improves battery safety, but also takes into account the convenience of operation and the economy of maintenance. Through reasonable structural design, the explosion-proof battery housing can effectively prevent the runaway of the internal pressure of the battery, reduce the risk of battery explosion, and provide a strong guarantee for the safe use of the battery.

[0035] In this embodiment, a wave-shaped protrusion 541 is excavated on the inner wall of the limiting sliding wall 540 , and a matching protrusion 410 that fits with the wave-shaped protrusion 541 is disposed at the end of the movable cover plate 400 .

[0036] The design of the wave-shaped protrusions 541 dug on the inner wall of the limiting sliding wall 540 provides a more precise and reliable mechanism for the positioning and movement of the movable cover plate 400. These wave-shaped protrusions 541 are similar to lock buckles. When the matching protrusions 410 of the movable cover plate 400 come into contact with them, they can produce a stable mechanical bite, ensuring that the cover plate will not flip over at a large angle and fall off when the pressure inside the battery changes, and can move parallel to each other without flipping under pressure fluctuations, achieving a pressure relief effect and ensuring the stability of the internal air pressure of the battery. In addition, the design of the wave-shaped protrusions 541 also increases the contact area, helps to disperse the pressure, and reduces local stress concentration, thereby extending the service life of the movable cover plate 400 and the limiting sliding wall 540.

[0037] In this embodiment, a first conductive column 210 is connected to the outer cover plate 200, the lower part of the first conductive column 210 is connected to the fixed cover plate 300, and a second conductive column 410 is connected to the movable cover plate 400. The first conductive column 210 and the second conductive column 410 are electrically connected through a wire 211. The first conductive column 210 is threadedly connected to the outer cover plate 200 and the fixed cover plate 300, and the second conductive column 410 is threadedly connected to the movable cover plate 400.

[0038] The outer cover plate 200 is connected to a first conductive column 210, the lower part of which is connected to the fixed cover plate 300, and the movable cover plate 400 is connected to a second conductive column 410, which is electrically connected to the first conductive column 210 and the second conductive column 410 through a wire 211. This design realizes the electrical connection inside the battery and provides a safe conductive path. The threaded connection between the first conductive column 210 and the second conductive column 410 ensures the stability and reliability of the electrical connection, and maintains good contact even in the case of vibration or temperature changes.

[0039] In this embodiment, a spring 420 is connected between the movable cover plate 400 and the fixed cover plate 300 .

[0040] The design of connecting the spring 420 between the movable cover plate 400 and the fixed cover plate 300 adds dynamic adjustment capability to the sealing system of the battery housing. As an elastic element, the spring 420 can provide the necessary reaction force when the internal pressure of the battery changes, ensuring that the movable cover plate 400 always fits tightly on the fixed cover plate 300, thereby maintaining a good sealing effect. This design enables the battery housing to adapt to different working environments, such as temperature changes, vibrations, etc., to ensure that the gas inside the battery will not leak, while also preventing external impurities from entering. The elastic properties of the spring 420 also help to absorb and alleviate pressure fluctuations inside the battery, reduce mechanical damage caused by sudden changes in pressure, and extend the service life of the battery housing. In addition, the presence of the spring 420 makes the movable cover plate 400 move more smoothly, and improves the stability of the movable cover plate 400 in adjusting the internal air pressure of the battery.

[0041] In this embodiment, a first slot 310 is dug on the lower surface of the fixed cover 300 , a second slot 430 is dug on the upper surface of the movable cover 400 , and one end of the spring 420 is clamped in the first slot 310 and the other end is clamped in the second slot 430 .

[0042] A first slot 310 is dug on the lower surface of the fixed cover plate 300, and a second slot 430 is dug on the upper surface of the movable cover plate 400. The design in which one end of the spring 420 is connected to the first slot 310 and the other end is connected to the second slot 430 realizes a firm connection between the spring 420 and the cover plate.

[0043] In this embodiment, the outer cover plate 200 is disposed above the limiting protruding ring 510 .

[0044] The outer cover plate 200 is disposed above the limiting protruding ring 510 , which not only provides an additional protective layer to prevent foreign substances from corroding the interior of the battery, but also enhances the structural strength of the entire shell.

[0045] In this embodiment, the limiting protrusion 510 and the first annular protrusion 520 are spaced apart, and the fixed cover plate 300 is installed at the gap between the limiting protrusion 510 and the first annular protrusion 520 .

[0046] The design of the spacing of the limiting convex ring 510 and the first annular protrusion 520 provides a precise positioning point for the installation of the fixed cover plate 300, ensuring that the fixed cover plate 300 can be firmly installed in a predetermined position while leaving enough space to accommodate the movable cover plate 400. The fixed cover plate 300 is installed in the gap between the limiting convex ring 510 and the first annular protrusion 520, further enhancing the structural integrity of the battery housing. The position of the fixed cover plate 300 not only ensures the stability of the internal components of the battery, but also provides an additional protective layer when the battery is subjected to external impact, reducing damage to the internal components.

[0047] In this embodiment, the first annular protrusion 520 , the second annular protrusion 530 , and the limiting sliding wall 540 are integrally formed and connected.

[0048] The design of the first annular protrusion 520, the second annular protrusion 530, and the limiting sliding wall 540 being integrally formed and connected realizes the integrated production of components, thereby improving production efficiency and product quality. This integrated design reduces the assembly steps in the production process, reduces potential failure points, and improves the overall reliability of the product. At the same time, the integrally formed structure also makes the fit between the components tighter and improves the sealing performance. This design also simplifies the maintenance and replacement process, because when a component needs to be replaced, the entire integrally formed component can be directly replaced without disassembling each component separately.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An explosion-proof battery housing, characterized in that: It includes a main shell body with a cavity, an outer cover plate covering the opening of the cavity, a fixed cover plate arranged in the cavity and located below the outer cover plate, and a movable cover plate arranged in the cavity and located below the fixed cover plate. The side wall of the cavity is provided with a limiting convex ring, a first annular protrusion and a second annular protrusion in sequence from top to bottom. The first annular protrusion and the second annular protrusion are distributed at intervals. A limiting sliding wall is arranged between the first annular protrusion and the second annular protrusion. The end of the movable cover plate abuts against the limiting sliding wall and the movable cover plate can move up and down along the limiting sliding wall under the action of air pressure in the cavity.

2. The explosion-proof battery housing according to claim 1, characterized in that: The inner wall of the position-limiting sliding wall is provided with a wave-shaped protrusion, and the end of the movable cover plate is provided with a matching protrusion that fits with the wave-shaped protrusion.

3. The explosion-proof battery housing according to claim 1, characterized in that: The outer cover is connected to a first conductive column, the lower portion of which is connected to the fixed cover, the movable cover is connected to a second conductive column, and the first conductive column and the second conductive column are electrically connected via a wire.

4. The explosion-proof battery housing according to claim 3, characterized in that: The first conductive column is threadedly connected to the outer cover plate and the fixed cover plate, and the second conductive column is threadedly connected to the movable cover plate.

5. The explosion-proof battery housing according to claim 1, characterized in that: A spring is connected between the movable cover plate and the fixed cover plate.

6. The explosion-proof battery housing according to claim 5, characterized in that: A first slot is dug on the lower surface of the fixed cover plate, a second slot is dug on the upper surface of the movable cover plate, one end of the spring is clamped in the first slot, and the other end is clamped in the second slot.

7. The explosion-proof battery housing according to claim 1, characterized in that: The outer cover plate is arranged above the limiting convex ring.

8. The explosion-proof battery housing according to claim 1, characterized in that: The limiting protrusion and the first annular protrusion are spaced apart, and the fixed cover plate is installed at the gap between the limiting protrusion and the first annular protrusion.

9. The explosion-proof battery housing according to claim 1, characterized in that: The first annular protrusion, the second annular protrusion and the limiting sliding wall are integrally formed and connected.

10. An explosion-proof battery, characterized in that: The invention comprises an explosion-proof battery housing as claimed in any one of claims 1 to 9.

Images