A type of explosion-proof valve with a recessed top cover plate

Abstract

This utility model discloses a top cover plate for a sunken explosion-proof valve. The top cover plate has a mounting hole 1 in the middle for connecting to the explosion-proof valve plate and mounting holes 2 on both sides for connecting to the positive and negative terminals. The lower wall of the mounting hole 1 has a radially outward protruding boss, and multiple grooves 1 are formed on the boss. This solution improves the structure of the top cover plate by forming grooves 1 on the boss, which helps to improve the structural strength of the top cover plate at the mounting hole 1 and reduce the deformation of the mounting hole 1, so that the explosion-proof valve plate can open according to the design parameters.

Description

Technical Field

[0001] This utility model relates to the field of battery device technology, specifically to a top cover plate for a sunken explosion-proof valve. Background Technology

[0002] The explosion-proof valve is a core component of battery safety design. When the internal pressure of the battery exceeds a set value, the explosion-proof valve opens to release gas and prevent the casing from rupturing. The explosion-proof valve is usually installed at the mounting hole of the top cover. The top cover at the mounting hole is prone to deformation due to insufficient strength, which causes the explosion-proof valve to fail to open according to the predetermined parameters. It can only open when the internal pressure far exceeds the set value, which increases the risk of battery failure and needs to be improved. Utility Model Content

[0003] To address at least one of the aforementioned technical deficiencies, this utility model provides the following technical solution:

[0004] This application discloses a top cover plate for a sunken explosion-proof valve. The top cover plate has a mounting hole 1 in the middle for connecting to the explosion-proof valve plate and mounting holes 2 on both sides for connecting to the positive and negative terminals. The lower wall of the mounting hole 1 is radially protruding to form a boss, and multiple grooves are formed on the boss.

[0005] This solution improves the structure of the top cover plate by forming a groove on the boss to help increase the structural strength of the top cover plate at the mounting hole and reduce the deformation of the mounting hole, so that the explosion-proof valve plate can open according to the design parameters.

[0006] Furthermore, the two sinks are arranged opposite each other along the length of the top cover plate, which better enhances the structural strength of the top cover plate at the mounting hole.

[0007] Furthermore, the groove extends in an arc shape, which further enhances the structural strength of the top cover plate at the mounting hole.

[0008] Furthermore, a notch is provided in the wall of the sinking tank to allow the sinking tank cavity to communicate with the cavity of the mounting hole. The other wall of the sinking tank opposite to the notch is stepped along the thickness direction of the top cover plate. Adding the notch helps to reduce the molding difficulty, and the stepped configuration of the other wall helps to improve the structural strength.

[0009] Furthermore, a second recess is provided at the end face of the first mounting hole, and a second notch is provided on the wall of the second recess so that the cavity of the second recess is connected to the cavity of the first mounting hole, thereby increasing the second recess to further enhance the structural strength of the top cover plate of the first mounting hole.

[0010] Furthermore, recesses are provided at intervals along the width direction of the top cover plate at the opposite end face of the mounting hole one, which further enhances the structural strength of the top cover plate at the mounting hole one.

[0011] Furthermore, it also includes an injection hole located between mounting hole one and mounting hole two.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model improves the structure of the top cover plate by forming a groove at the boss of the mounting hole to improve its structural strength and reduce deformation, which can enable the explosion-proof valve plate to perform the predetermined action better. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the sinking top cover plate structure of the explosion-proof valve in Embodiment 1;

[0016] Figure 2 yes Figure 1 A schematic diagram of the cross-sectional structure;

[0017] The attached figures are labeled as follows:

[0018] 1. Top cover plate; 2. Mounting hole one; 3. Mounting hole two; 4. Injection hole; 21. Boss; 22. Settling tank one; 23. Settling tank two; 24. Notch one; 25. Notch two. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0020] Example 1

[0021] like Figure 1 , Figure 2 As shown, in this example, a top cover plate for a sunken explosion-proof valve is provided, wherein the top cover plate 1 has a mounting hole 2 formed in the middle for connecting to the explosion-proof valve plate, mounting holes 3 formed on both sides of the top cover plate 1 for connecting to the positive and negative terminals, and an injection hole 4 is provided between the mounting holes 2 and 3.

[0022] The lower wall of mounting hole 2 has a radially outwardly protruding boss 21, on which multiple countersunk grooves 22 are formed. Regarding the number of countersunk grooves, as... Figure 1As shown, two recesses 22 are formed on the boss 21 along the length of the top cover plate 1. Each recess 22 extends in an arc shape and is concentric with the wall of the mounting hole 1. The formation of the recesses helps to improve the structural strength of the top cover plate at the mounting hole 1 and reduce deformation. After the explosion-proof valve plate is installed, it can be opened according to the predetermined parameters.

[0023] To facilitate molding, a notch 24 is formed in the wall of the settling tank 22 to allow the cavity of the settling tank 22 to communicate with the cavity of the mounting hole 2, such as... Figure 2 As shown. Alternatively, the other wall of the sinkhole 22 opposite to notch 24 can be made stepped along the thickness direction of the top cover plate, as shown. Figure 2 As shown, it can be in the form of a single-level ladder, a second-level ladder, or a third-level ladder.

[0024] In addition, a second recess 23 can be added, such as forming a second recess 23 at the end face of the hole of mounting hole 2, for example. Figure 1 As shown, a recessed groove 23 is formed at the opposite end face of the mounting hole 2 along the width direction of the top cover plate 1. Two recessed grooves 23 are formed at intervals at the end face of each side of the hole. A notch 23 is formed at the groove wall of the recessed groove 23 to connect the groove cavity of the recessed groove 2 with the cavity of the mounting hole 1, thereby increasing the structural strength of the top cover plate at the mounting hole 1.

[0025] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.

Claims

1. A top cover plate for a recessed explosion-proof valve, wherein the top cover plate (1) has a mounting hole (2) in the middle for connecting to the explosion-proof valve plate and mounting holes (3) on both sides for connecting to the positive and negative terminals, characterized in that, The lower hole wall of the mounting hole (2) is radially protruding to form a boss (21), and a plurality of grooves (22) are formed on the boss (21).

2. The top cover plate for a sunken explosion-proof valve as described in claim 1, characterized in that: The two sinks (22) are arranged opposite each other along the length of the top cover plate.

3. The top cover plate for a sunken explosion-proof valve as described in claim 1, characterized in that: The settling channel (22) extends in an arc shape.

4. A top cover sheet for preventing valve sinking of an explosion relief valve as defined in claim 1, characterized in that: A notch (24) is provided in the wall of the sinking trough (22) so that the cavity of the sinking trough (2) is connected to the cavity of the mounting hole (2), and the other wall of the sinking trough (22) opposite to the notch (24) is stepped along the thickness direction of the top cover plate.

5. A top cover sheet for preventing valve sinking of an explosion relief valve as defined in claim 1, characterized in that: A second groove (23) is provided at the end face of the mounting hole one (2), and a notch two (25) is provided at the groove wall of the second groove (23) so that the groove cavity of the second groove is connected to the cavity of the mounting hole one.

6. A top cover sheet for preventing valve sinking of an explosion relief valve as defined in claim 1, characterized in that: Along the width direction of the top cover plate (1), countersinks (23) are provided at intervals at the opposite end faces of the mounting holes (2).

7. A top cover sheet for preventing valve sinking of an explosion relief valve as defined in claim 1, characterized in that: It also includes an injection hole (4) located between mounting hole one (2) and mounting hole two (3).

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