Safety valve structure of storage battery

Abstract

The utility model discloses a safety valve structure of a storage battery. The safety valve structure comprises a mounting surface and a thread mounting slot formed in the surface of the mounting surface, the threaded connection part is fixed to the bottom face of the top piece and can be in threaded connection with the threaded insertion groove, the insertion part is fixed to the bottom of the threaded connection part, and the screwing piece is fixed to the top end of the top piece. The threaded connecting part comprises a main body A and an inner cavity formed in the main body A, and the top end of the inner cavity penetrates through the top piece and the screwing piece and leads to the outside; the developing test paper is arranged at the outer port of the inner cavity, when electrolyte steam leaks, the developing test paper and the electrolyte steam can be subjected to developing reaction in the pressure relief process, people can immediately judge that abnormal pressure relief occurs due to color change, so that the battery is checked and replaced in the first time, the safety is improved, and meanwhile, due to the designed notch, the electrolyte steam leakage can be avoided, and the service life of the battery is prolonged. Certain dustproof and waterproof capabilities can be ensured in the pressure relief process, and the normal use of the battery can be ensured.

Description

Technical Field

[0001] This utility model belongs to the field of storage battery technology, specifically relating to a safety valve structure for a storage battery. Background Technology

[0002] As a key safety component of a battery, the safety valve is considered the "core of safety protection." Under normal circumstances, it keeps the battery sealed, preventing electrolyte leakage and the intrusion of external air. When the battery is charging or malfunctioning, gas is generated, causing the internal pressure to rise. This automatically opens to release pressure, preventing the battery casing from bulging or even bursting. Battery pressure release is divided into normal pressure release and abnormal pressure release. Normal pressure release occurs because the battery produces a small amount of oxygen and hydrogen during discharge. After pressure release, the battery can be used normally. Abnormal pressure release, on the other hand, occurs because of an abnormality inside the battery, causing an increase in gas pressure. In this case, the battery needs to be stopped immediately for inspection and replacement. Among the many causes of abnormal pressure release, cell damage, seal failure, and overcharging causing electrolyte boiling pose the greatest safety hazards. This is because these situations can cause electrolyte vapor leakage, which can easily lead to explosions or fires.

[0003] There is still room for improvement in existing safety valves. First, the safety valves are not good at distinguishing between normal and abnormal pressure relief, especially in their poor warning response to electrolyte vapor leakage in abnormal pressure relief, which poses a safety hazard. Second, when the pressure relief port is open during pressure relief, the dust and water protection effect is insufficient. Therefore, a new safety valve structure needs to be designed to solve this problem. Utility Model Content

[0004] The purpose of this utility model is to provide a safety valve structure for a storage battery, so as to solve the problem that the existing safety valves mentioned in the background art are not good in terms of safety and dustproof and waterproof effects.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a safety valve structure for a storage battery, comprising...

[0006] Mounting surface, threaded mounting slots formed on the surface of the mounting surface;

[0007] Top plate, threaded connection part fixed to the bottom surface of the top plate and capable of threaded connection with the threaded socket, insertion part fixed to the bottom of the threaded connection part, and screw plate fixed to the top of the top plate;

[0008] The threaded connection includes a main body A and an inner cavity opened inside the main body A. The top end of the inner cavity passes through the top plate and the screw plate and opens to the outside.

[0009] The insertion part includes a main body B and a through groove formed inside the main body B. The top end of the through groove communicates with the inner cavity, and the bottom end is open.

[0010] The pressure relief assembly includes a spring fixed inside the inner cavity, a movable block slidably installed inside the inner cavity and fixed to the top of the spring, a sealing plate fixed to the top of the movable block, and a pressure relief groove provided on the outer surface of the movable block. The pressure relief groove includes a slot that passes through the outer surface of the movable block and a mesh cover fixed inside the slot.

[0011] The pressure relief assembly also includes a transparent cover fixed to the top surface of the screw plate and surrounding the outside of the sealing sheet, and colorimetric test paper pasted on the inner wall of the transparent cover.

[0012] Preferably, the sealing sheet is located outside the outer port of the inner cavity, and the diameter of the sealing sheet is larger than the diameter of the inner cavity.

[0013] Preferably, the sealing sheet, the transparent cover, and the colorimetric test paper are all circular in top view, and the sealing sheet does not contact the colorimetric test paper.

[0014] Preferably, the pressure relief assembly further includes a rubber sheet, which is fixed to the bottom surface of the sealing sheet.

[0015] Preferably, the inner cavity is circular when viewed from above, and the inner wall of the inner cavity is in contact with the outer surface of the movable block.

[0016] Preferably, the top plate and the threaded connection portion form a T-shaped cross section, and the screw plate has a hexagonal structure when viewed from above.

[0017] Preferably, a rubber sealing sleeve is fixed to the bottom of the top piece, and the rubber sealing sleeve surrounds the outside of the threaded connection.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] By placing colorimetric test strips at the outer port of the inner cavity, when electrolyte vapor leaks, the test strips will react with the electrolyte vapor during the pressure relief process, and the color change will allow people to immediately identify abnormal pressure relief, so that the battery can be checked and replaced as soon as possible, thus improving safety. At the same time, the designed slots can ensure that the battery still has a certain degree of dust and water resistance during the pressure relief process, ensuring that the battery can be used normally. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0021] Figure 2 This is a front sectional view of the present invention;

[0022] Figure 3 This utility model Figure 2 Enlarged view of area A in the middle;

[0023] Figure 4 This is a front sectional view of the present invention during pressure relief;

[0024] In the diagram: 100, mounting surface; 200, threaded mounting slot; 300, top plate; 400, threaded connection; 401, main body A; 402, inner cavity; 500, insertion part; 501, main body B; 502, through groove; 600, screw plate; 700, pressure relief assembly; 701, spring; 702, movable block; 703, pressure relief groove; 7031, slot; 7032, mesh cover; 704, sealing plate; 705, rubber sheet; 706, transparent cover; 707, colorimetric test paper; 800, rubber sealing sleeve. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example

[0027] Please see Figures 1 to 4 This embodiment provides a technical solution: a safety valve structure for a storage battery, comprising...

[0028] The mounting surface 100 and the threaded slot 200 formed on the surface of the mounting surface 100 can be threadedly connected with the threaded connection part 400 to realize the installation of the safety valve.

[0029] The main structure of the safety valve consists of a top plate 300, a threaded connection part 400 fixed to the bottom surface of the top plate 300 and capable of threaded connection with the threaded socket 200, an insertion part 500 fixed to the bottom of the threaded connection part 400, and a screw plate 600 fixed to the top of the top plate 300.

[0030] The threaded connection part 400 includes a main body A401 and an inner cavity 402 formed inside the main body A401. The top end of the inner cavity 402 passes through the top piece 300 and the screw piece 600 and leads to the outside. The insertion part 500 includes a main body B501 and a through groove 502 formed inside the main body B501. The top end of the through groove 502 communicates with the inner cavity 402, and the bottom end is open. Pressure is relieved through the through groove 502 and the inner cavity 402.

[0031] The pressure relief assembly 700 includes a spring 701 fixed inside the inner cavity 402, a movable block 702 slidably installed inside the inner cavity 402 and fixed to the top of the spring 701, a sealing sheet 704 fixed to the top of the movable block 702, and a pressure relief groove 703 provided on the outer surface of the movable block 702. The pressure relief groove 703 includes a slot 7031 that passes through the outer surface of the movable block 702 and a mesh cover 7032 fixed inside the slot 7031. When the pressure is released, the internal air pressure of the battery increases, pushing the movable block 702 to move upward and exposing the pressure relief groove 703. Pressure is released at the pressure relief groove 703. The mesh cover 7032 inside the groove can play a certain role in blocking dust and water.

[0032] The pressure relief assembly 700 also includes a transparent cover 706 fixed to the top surface of the screw clip 600 and surrounding the outside of the sealing plate 704, and a colorimetric test paper 707 pasted on the inner wall of the transparent cover 706. If the battery is a lead-acid battery, Congo red test paper is used. When the lead-acid battery is abnormally depressurized, it will spray acid mist, which reacts with the Congo red test paper, causing the test paper to change from red to blue. If the battery is a lithium battery, fluoride ion detection test paper is used. When the electrolyte vapor leaks, the test paper changes from yellow to pink or purple.

[0033] In this embodiment, preferably, the sealing sheet 704 is located outside the outer port of the inner cavity 402. The diameter of the sealing sheet 704 is larger than the aperture of the inner cavity 402. Under normal conditions, the sealing sheet 704 blocks the outer port of the inner cavity 402, thereby achieving a sealing effect.

[0034] In this embodiment, preferably, the sealing sheet 704, the transparent cover 706, and the colorimetric test paper 707 are all circular structures when viewed from above, and the sealing sheet 704 does not contact the colorimetric test paper 707, thus ensuring a good pressure relief effect.

[0035] In this embodiment, preferably, the pressure relief assembly 700 further includes a rubber sheet 705, which is fixed to the bottom surface of the sealing sheet 704 to further improve the sealing effect.

[0036] In this embodiment, preferably, the inner cavity 402 is circular when viewed from above, and the inner wall of the inner cavity 402 is in contact with the outer surface of the movable block 702, so that the movable block 702 can move stably up and down inside the inner cavity 402.

[0037] In this embodiment, preferably, the top plate 300 and the threaded connection 400 form a T-shaped cross section, and the screw plate 600 has a hexagonal structure when viewed from above. The screw plate 600 can be screwed by a hexagonal bolt to install the safety valve.

[0038] In this embodiment, preferably, a rubber sealing sleeve 800 is fixed to the bottom of the top plate 300, and the rubber sealing sleeve 800 surrounds the outside of the threaded connection 400 to ensure the sealing performance of the safety valve after installation.

[0039] Although embodiments of the present invention have been shown and described (see the detailed description above), it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A safety valve structure for a storage battery, characterized in that: include Mounting surface (100), threaded mounting slot (200) formed on the surface of mounting surface (100); Top plate (300), threaded connection part (400) fixed to the bottom surface of top plate (300) and capable of threaded connection with threaded slot (200), plug part (500) fixed to the bottom of threaded connection part (400), and screw plate (600) fixed to the top of top plate (300). The threaded connection (400) includes a main body A (401) and an inner cavity (402) opened inside the main body A (401). The top end of the inner cavity (402) passes through the top plate (300) and the screw plate (600) and opens to the outside. The insertion part (500) includes a main body B (501) and a through groove (502) opened inside the main body B (501). The top end of the through groove (502) communicates with the inner cavity (402) and the bottom end is open. The pressure relief assembly (700) includes a spring (701) fixed inside the inner cavity (402), a movable block (702) slidably installed inside the inner cavity (402) and fixed to the top of the spring (701), a sealing plate (704) fixed to the top of the movable block (702), and a pressure relief groove (703) provided on the outer surface of the movable block (702). The pressure relief groove (703) includes a slot (7031) that passes through the outer surface of the movable block (702) and a mesh cover (7032) fixed inside the slot (7031). The pressure relief assembly (700) also includes a transparent cover (706) fixed to the top surface of the screw plate (600) and surrounding the outside of the sealing plate (704), and a colorimetric test paper (707) pasted on the inner wall of the transparent cover (706).

2. The safety valve structure for a storage battery according to claim 1, characterized in that: The sealing piece (704) is located outside the outer port of the inner cavity (402), and the diameter of the sealing piece (704) is larger than the aperture of the inner cavity (402).

3. The safety valve structure for a storage battery according to claim 2, characterized in that: The sealing sheet (704), the transparent cover (706), and the colorimetric test paper (707) are all circular structures when viewed from above, and the sealing sheet (704) does not contact the colorimetric test paper (707).

4. A safety valve structure for a battery according to claim 3, characterized in that: The pressure relief assembly (700) also includes a rubber sheet (705) fixed to the bottom surface of the sealing sheet (704).

5. The safety valve structure for a storage battery according to claim 4, characterized in that: The inner cavity (402) is circular when viewed from above, and the inner wall of the inner cavity (402) is in contact with the outer surface of the movable block (702).

6. A safety valve structure for a battery according to claim 5, wherein: The top plate (300) and the threaded connection (400) form a T-shaped cross section, and the screw plate (600) has a hexagonal structure when viewed from above.

7. A safety valve structure for a battery according to claim 6, wherein: A rubber sealing sleeve (800) is fixed to the bottom of the top piece (300), and the rubber sealing sleeve (800) surrounds the outside of the threaded connection (400).

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