Anti-explosion pressure release valve structure capable of preventing water from being touched by mistake

Abstract

The utility model discloses an anti-explosion pressure release valve structure capable of preventing water and mistaken touch. The anti-explosion pressure release valve structure comprises a mounting frame, an anti-explosion valve plate and an anti-explosion pasting film. A mounting frame is embedded in the battery cover plate, the mounting frame is of a hollow annular structure similar to a rectangle, and the interior of the mounting frame is communicated with the upper and lower areas of the battery cover plate; an anti-explosion valve plate is horizontally arranged on the lower surface of the mounting frame, the fixed ends of the anti-explosion valve plate are respectively welded and fixed with the peripheral edge of the lower surface of the mounting frame close to the combination position of the anti-explosion valve plate and the battery cover plate, and the mounting frame is covered in the anti-explosion valve plate; an anti-explosion pasting film is horizontally arranged at the upper position in the mounting frame, and anti-touch protection is conducted on the anti-explosion valve plate through the anti-explosion pasting film; and exhaust holes are formed in the middle positions of the upper surfaces of the two arc-shaped edges of the mounting frame, and the lower ends of the two exhaust holes extend out of the lower surface of the mounting frame correspondingly and are matched with the anti-explosion valve plate to conduct exhaust and pressure relief. According to the utility model, the explosion-proof film is arranged in the mounting frame, so that the phenomenon that the explosion-proof valve plate is deformed due to mistaken touch is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and particularly relates to an explosion-proof pressure relief valve structure which can prevent water and accidental touch. Background Art

[0002] During the use of a lithium battery, when abnormal conditions such as short circuit, overcharge, and over-discharge occur, a large amount of gas will be generated inside the battery due to the reaction, which will cause the internal pressure of the battery to increase sharply, thereby causing deformation of the battery shell and even the risk of explosion. For this reason, an explosion-proof pressure relief valve is usually installed on the battery shell. When the internal pressure of the battery increases to a certain pressure value, the explosion-proof pressure relief valve will be opened, so as to discharge the gas inside the battery to relieve the pressure.

[0003] The existing explosion-proof pressure relief valves usually set an installation frame on the battery cover plate, and then an explosion-proof valve sheet is installed in the installation frame by welding. However, during actual operation, for example, during handling, it is very easy for the explosion-proof valve sheet to be deformed due to accidental touch; if an anti-touch device is installed on the explosion-proof valve sheet, the pressure relief effect of the explosion-proof valve sheet will be affected. Therefore, the above problems need to be solved urgently. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide an explosion-proof pressure relief valve structure which can prevent water and accidental touch. By providing an explosion-proof film matching with the installation frame inside the installation frame, the phenomenon that the explosion-proof valve sheet is deformed due to accidental touch is prevented.

[0005] To solve the above technical problems, the utility model adopts the following technical solutions: An explosion-proof pressure relief valve structure which can prevent water and accidental touch of the utility model is characterized in that: it includes an installation frame, an explosion-proof valve sheet and an explosion-proof film; the installation frame is horizontally embedded and installed on the horizontally placed battery cover plate, the installation frame is a hollow annular structure similar to a rectangle, and its interior is respectively communicated with the upper and lower regions of the battery cover plate; an explosion-proof valve sheet matching with it is also horizontally arranged on the lower surface of the installation frame, the fixed ends of the explosion-proof valve sheet are respectively welded and fixed to the four peripheral edges of the lower surface of the installation frame at the position where it is combined with the battery cover plate, and the installation frame is covered inside it; an explosion-proof film matching with it is also horizontally and fixedly arranged at a position above the middle inside the installation frame, and the explosion-proof valve sheet is protected from accidental touch through the explosion-proof film; exhaust holes are respectively vertically embedded and opened at the middle positions of the upper surfaces of the two arc-shaped sides of the installation frame, and the lower ends of the two exhaust holes respectively vertically extend out of the lower surface of the installation frame and cooperate with the explosion-proof valve sheet to exhaust and relieve pressure;

[0006] Each of the exhaust holes is in the shape of a kidney-shaped hole, and its long sides are arranged along the width direction of the mounting frame; a waterproof boss is further included; on the upper surfaces of the two arc-shaped sides of the mounting frame, waterproof bosses matching the exhaust holes are vertically provided at positions corresponding to each exhaust hole, and each waterproof boss covers the corresponding exhaust hole therein, so as to form a barrier through the waterproof boss to prevent the liquid on the upper surface of the battery cover plate from seeping into the exhaust hole; through holes are vertically and embeddedly opened on the upper surface of each waterproof boss, each through hole is in the shape of a kidney-shaped hole matching the corresponding exhaust hole, and respectively vertically extend out of the lower surface of the corresponding waterproof boss and are respectively communicated with the corresponding exhaust hole, so as to cooperate with the exhaust hole for exhaust and pressure relief while the waterproof boss conducts waterproof blocking;

[0007] A waterproof cap is further included; a waterproof cap matching the waterproof boss is sleeved on the upper end of each waterproof boss, and each waterproof cap is clamped with the corresponding waterproof boss, so as to block the corresponding through hole through the waterproof cap and provide waterproof protection during the battery cleaning process.

[0008] Preferably, the mounting frame and the battery cover plate are integrally formed, and its upper surface is coplanar with the upper surface of the battery cover plate, and its lower surface is coplanar with the lower surface of the battery cover plate, so as to ensure that the interior of the mounting frame is respectively communicated with the upper and lower regions of the battery cover plate.

[0009] Preferably, the long side of the mounting frame is arranged along the length direction of the battery cover plate, and its width is half of the width of the battery cover plate.

[0010] Preferably, both of the exhaust holes are located within the coverage range of the explosion-proof valve plate, so as to ensure that gas can be discharged through the exhaust holes only after the explosion-proof valve plate is opened.

[0011] Preferably, each waterproof boss is in the shape of a square, an ellipse or a semi-circle, and its height is 0.1 mm to 2 mm, and it is connected to the mounting frame by integral stamping, welding or bonding.

[0012] The beneficial effects of the present utility model:

[0013] (1) By providing an explosion-proof film matching the mounting frame inside the mounting frame, the present utility model prevents the phenomenon that the explosion-proof valve plate is deformed due to being accidentally touched;

[0014] (2) By opening exhaust holes on the frame wall of the mounting frame, the present utility model can not only cooperate with the explosion-proof valve plate to discharge gas, but also avoid opening holes in the explosion-proof film, thus saving costs while not affecting the anti-touch function of the explosion-proof film;

[0015] (3) By using the waterproof boss and the waterproof cap in combination, the utility model can effectively prevent water from entering through the exhaust hole during the battery cleaning process, thereby avoiding adverse effects on the explosion-proof valve piece and improving the service life.

[0016] (4) The waterproof cap and the waterproof boss of the utility model adopt a snap-on quick connection method, which is convenient to remove the waterproof cap after the battery cleaning is completed, thereby avoiding the influence of the waterproof cap on the exhaust pressure relief of the exhaust hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a structural schematic diagram of an explosion-proof pressure relief valve structure of the present utility model that can prevent water and accidental touch.

[0019] Figure 2 is Figure 1 top view of.

[0020] Among them, 1 - battery cover plate; 2 - mounting frame; 3 - explosion-proof valve piece; 4 - explosion-proof film; 5 - exhaust hole; 6 - waterproof boss; 7 - waterproof cap. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following will clearly and completely describe the technical solutions of the present utility model through specific embodiments.

[0022] An explosion-proof pressure relief valve structure of the present utility model that can prevent water and accidental touch includes a mounting frame 2, an explosion-proof valve piece 3 and an explosion-proof film 4; the specific structure is as Figure 1 、 Figure 2 shown. A mounting frame 2 is horizontally embedded and installed on a horizontally placed battery cover plate 1. The mounting frame 2 is a hollow annular structure similar to a rectangle, and it is integrally formed with the battery cover plate 1. The upper surface of the mounting frame 2 is coplanar with the upper surface of the battery cover plate 1, and its lower surface is coplanar with the lower surface of the battery cover plate 1, thereby ensuring that the interior of the mounting frame 2 is respectively communicated with the upper and lower regions of the battery cover plate 1; among them, the long side of the mounting frame 2 is arranged along the length direction of the battery cover plate 1, and its width is half of the width of the battery cover plate 1.

[0023] The present utility model also horizontally provides an explosion-proof valve piece 3 matching with the lower surface of the mounting frame 2, as Figure 1 、 Figure 2As shown, the fixed ends of the explosion-proof valve sheet 3 are respectively welded and fixed to the four peripheral edges of the lower surface of the mounting frame 2 at the position where it is combined with the battery cover plate 1, and the mounting frame 2 is covered therein; an explosion-proof film 4 matching the mounting frame 2 is horizontally and fixedly arranged at a position above the middle inside the mounting frame 2, and the explosion-proof valve sheet 3 is protected from being touched through the explosion-proof film 4.

[0024] In the utility model, exhaust holes 5 are respectively vertically embedded and opened at the middle positions of the upper surfaces of the two arc-shaped sides of the mounting frame 2, as Figure 1 、 Figure 2 shown. Both of the two exhaust holes 5 are within the coverage range of the explosion-proof valve sheet 3, and their lower ends respectively vertically extend out of the lower surface of the mounting frame 2, so as to ensure that after the explosion-proof valve sheet 3 is opened, gas can be discharged through the exhaust holes 5; among them, each exhaust hole 5 is in the shape of a waist-shaped hole, and its long side is arranged along the width direction of the mounting frame 2.

[0025] In the utility model, waterproof convex platforms 6 matching the mounting frame 2 are vertically arranged at the positions corresponding to each exhaust hole 5 on the upper surfaces of the two arc-shaped sides of the mounting frame 2, as Figure 1 、 Figure 2 shown. Each waterproof convex platform 6 covers the corresponding exhaust hole 5 therein, so as to form a barrier through the waterproof convex platform 6 to prevent the liquid on the upper surface of the battery cover plate 1 from seeping in through the exhaust holes 5; through holes are vertically embedded and opened on the upper surface of each waterproof convex platform 6, and each through hole is in the shape of a waist-shaped hole matching the corresponding exhaust hole 5, and respectively vertically extends out of the lower surface of the corresponding waterproof convex platform 6 and is respectively communicated with the corresponding exhaust hole 5, so as to cooperate with the exhaust hole 5 to exhaust and relieve pressure while the waterproof convex platform 6 conducts waterproof barrier. Among them, each waterproof convex platform 6 is in the shape of a square, an ellipse or a semi-circle, and its height is 0.1 mm to 2 mm, and it is connected to the mounting frame 2 by integral stamping, welding or gluing.

[0026] As Figure 1 、 Figure 2 shown, a waterproof cap 7 matching the corresponding waterproof convex platform 6 is sleeved on the upper end of each waterproof convex platform 6. Each waterproof cap 7 is snap-connected to the corresponding waterproof convex platform 6, and the snap connection needs to ensure that the waterproof cap 7 can be separated from the corresponding waterproof convex platform 6 only by pulling upward, so as to block the corresponding through hole through the waterproof cap 7 and conduct waterproof protection during the battery cleaning process. The snap connection form between the waterproof cap 7 and the waterproof convex platform 6 in the utility model is similar to the form of putting a non-slip sleeve on the table corner in the prior art, which is convenient for sleeving and disassembling, so it will not be elaborated here.

[0027] The working principle of the utility model:

[0028] When the battery needs to be cleaned, waterproof caps 7 are respectively sleeved on the two waterproof bosses 6, so that during the battery cleaning process, water can be effectively prevented from entering through the exhaust holes 5, thereby avoiding adverse effects on the explosion-proof valve piece 3;

[0029] During use, when the waterproof cap 7 is removed, after the explosion-proof valve piece 3 is activated, the gas can be discharged through the cooperation of the exhaust hole 5 and the through hole to relieve pressure.

[0030] The beneficial effects of the present utility model:

[0031] (1) By providing an explosion-proof film 4 matching the installation frame 2 inside the installation frame 2, the present utility model prevents the phenomenon that the explosion-proof valve piece 3 is deformed due to being accidentally touched;

[0032] (2) By providing exhaust holes 5 on the frame wall of the installation frame 2, the present utility model can not only cooperate with the explosion-proof valve piece 3 to discharge the gas, but also avoid opening holes in the explosion-proof film 4, thereby saving costs while not affecting the anti-touch function of the explosion-proof film 4;

[0033] (3) Through the combined use of the waterproof boss 6 and the waterproof cap 7, the present utility model can effectively prevent water from entering through the exhaust hole 5 during the battery cleaning process, thereby avoiding adverse effects on the explosion-proof valve piece 3 and improving the service life;

[0034] (4) The waterproof cap 7 and the waterproof boss 6 of the present utility model adopt a snap-fast connection method, which is convenient for removing the waterproof cap 7 after the battery cleaning is completed, thereby avoiding the influence of the waterproof cap 7 on the exhaust and pressure relief of the exhaust hole 5.

[0035] The above-described embodiments are only described as the preferred embodiments of the present utility model, and do not limit the concept and scope of the present utility model. Without departing from the design concept of the present utility model, various modifications and improvements made by ordinary engineering and technical personnel in the field to the technical solution of the present utility model should fall within the protection scope of the present utility model. The technical content claimed by the present utility model has been fully recorded in the claims.

Claims

1. An explosion-proof pressure relief valve structure that can prevent water and accidental touch, characterized in that: It includes an installation frame, an explosion-proof valve plate and an explosion-proof film; the installation frame is horizontally embedded and installed on the horizontally placed battery cover plate. The installation frame is a hollow annular structure similar to a rectangle, and its interior is respectively communicated with the upper and lower regions of the battery cover plate; on the lower surface of the installation frame, there is also a horizontally arranged explosion-proof valve plate matching with it. The fixed ends of the explosion-proof valve plate are respectively welded and fixed to the four peripheral edges of the lower surface of the installation frame at the position where it is combined with the battery cover plate, and the installation frame is covered inside it; at a position above the middle of the installation frame, there is also a horizontally fixed explosion-proof film matching with it, and the explosion-proof valve plate is protected from being touched by the explosion-proof film; at the middle position of the upper surfaces of the two arc-shaped sides of the installation frame, there are respectively vertically embedded and provided with exhaust holes, and the lower ends of the two exhaust holes respectively vertically extend out of the lower surface of the installation frame and cooperate with the explosion-proof valve plate for exhaust and pressure relief; Each of the exhaust holes is in the shape of a kidney-shaped hole, and its long side is arranged along the width direction of the installation frame; it also includes a waterproof boss; at the position of each exhaust hole on the upper surfaces of the two arc-shaped sides of the installation frame, there is also a vertically arranged waterproof boss matching with it, and each waterproof boss covers the corresponding exhaust hole inside it, so as to form a barrier through the waterproof boss to prevent the liquid on the upper surface of the battery cover plate from seeping into the battery through the exhaust holes; on the upper surface of each waterproof boss, there is also a vertically embedded through hole, and each through hole is in the shape of a kidney-shaped hole matching with the corresponding exhaust hole, and respectively vertically extends out of the lower surface of the corresponding waterproof boss and is respectively communicated with the corresponding exhaust hole, so as to cooperate with the exhaust hole for exhaust and pressure relief while the waterproof boss conducts waterproof blocking; It also includes a waterproof cap; at the upper end of each waterproof boss, there is also a waterproof cap sleeved and matching with it, and each waterproof cap is clamped with the corresponding waterproof boss, so as to block the corresponding through hole by the waterproof cap and provide waterproof protection during the battery cleaning process.

2. The explosion-proof pressure relief valve structure capable of preventing water and accidental touch according to claim 1, characterized in that: The installation frame and the battery cover plate are integrally formed, and its upper surface is coplanar with the upper surface of the battery cover plate, and its lower surface is coplanar with the lower surface of the battery cover plate, so as to ensure that the interior of the installation frame is respectively communicated with the upper and lower regions of the battery cover plate.

3. The structure of an explosion-proof pressure relief valve capable of preventing water and accidental touch according to claim 1, wherein: The long side of the installation frame is arranged along the length direction of the battery cover plate, and its width is half of the width of the battery cover plate.

4. The structure of an explosion-proof pressure relief valve capable of preventing water and accidental touch according to claim 3, characterized in that: The two exhaust holes are both within the coverage range of the explosion-proof valve plate, so as to ensure that after the explosion-proof valve plate is opened, gas can be discharged through the exhaust holes.

5. The structure of an explosion-proof pressure relief valve capable of preventing water and accidental touch according to claim 1, characterized in that: Each waterproof boss is in the shape of a square, an ellipse or a semi-circle, and its height is 0.1 mm to 2 mm, and it is connected to the installation frame by an integral stamping, welding or gluing method.

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