Anti-overflow lead-acid storage battery vent cock

Abstract

The utility model discloses an anti-overflow lead-acid storage battery vent cock which comprises a cock body, a containing cavity is formed in the cock body, a clamping groove used for installing a gas filtering piece is formed in the end, corresponding to the containing cavity, of the cock body, an angular positioning notch is formed in the side wall, corresponding to the other end of the containing cavity, of the cock body, and a groove is annularly formed in the inner wall, close to the other end of the containing cavity, of the cock body; the plug core is detachably connected into the containing cavity, flat plates are arranged at the two ends of the plug core, a plurality of partition plates are sequentially and obliquely arranged between the two flat plates at intervals from one end to the other end, reverse inclination angles are formed between the adjacent partition plates, supporting columns are arranged between the partition plates, and the flat plates and the partition plates divide the containing cavity into a plurality of partition cavities. According to the single-layer cover of the lead-acid storage battery, the risk of liquid overflow can be reduced, the single-layer cover is convenient to disassemble and use, and the requirement of an exhaust system for mutually independent unit cells required by the design of a single-layer cover of the lead-acid storage battery is met.

Description

Technical Field

[0001] This utility model belongs to the technical field of lead-acid battery accessories, specifically relating to a lead-acid battery vent plug that prevents overflow. Background Technology

[0002] Lead-acid batteries are currently the main type of battery used in automobiles. Their casing consists of a battery case, a battery cover, and a vent plug, which is sealed and fixed to the battery cover. During battery operation, some of the hydrogen and oxygen produced are released outside the battery through the vent plug, while some accumulates inside. When the amount of gas produced is large, the excessive gas pressure may cause acid to rise to the surface. Ordinary vent plugs lack acid-blocking structures, making it easy for acid to leak from them.

[0003] In addition, the design requirements of the single-layer cover of lead-acid batteries require that each cell support an independent venting system, but the existing vent plugs cannot prevent acid leakage while venting.

[0004] Therefore, how to provide a lead-acid battery vent plug that prevents leakage is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the present invention provides a lead-acid battery vent plug that prevents electrolyte leakage and allows for better venting.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a lead-acid battery vent plug to prevent overflow, comprising:

[0007] The plug body has an internal cavity. The end of the plug body corresponding to the cavity has a slot for installing the filter plate. The side wall of the other end of the plug body corresponding to the cavity has an angular positioning slot. The inner wall near the other end of the cavity has a groove.

[0008] The core is detachably connected to the inside of the cavity. The core has flat plates at both ends. Between the two flat plates, multiple partitions are arranged at intervals from one end to the other at an inclined angle. Adjacent partitions have opposite inclination angles. Support columns are arranged between adjacent partitions. The flat plates and multiple partitions divide the cavity into multiple compartments. Adjacent compartments are connected to form a flow channel. The flat plate at the end away from the slot is adapted to be connected in the groove, and one end of the flat plate is provided with a guide block that matches the angular positioning groove.

[0009] The beneficial effects of this utility model are as follows: the plug body has a cylindrical structure, and the cavity inside provides an installation base for the plug core. The plug core is provided with two flat plates and multiple partitions. The flat plates and partitions cooperate with the plug body to form multiple interconnected cavities. The cavities relatively extend the gas and liquid passages inside the plug body, playing the role of blocking and storing acid, slowing down the process of electrolyte flowing to the filter plate, and avoiding the risk of battery leakage. In addition, the plug core and plug body adopt a snap-fit ​​connection. The plug core can only be successfully snapped on after the filter plate is installed in place, which is fixed firmly. The matching installation can also play a role in preventing mistakes.

[0010] Preferably, the outer contour of the flat plate near the slot includes a straight segment and an arc segment, the arc segment being adapted to closely fit the inner wall of the cavity, and the straight segment forming a material passage between the straight segment and the inner wall of the cavity.

[0011] The resulting technical effect is that the flat plate near the slot is not a regular circle; the straight section, together with the inner wall of the cavity, forms a channel for gas passage or liquid return, facilitating the passage of gas or the return of acid.

[0012] Preferably, the partition is an irregular elliptical structure, and the outer contour of the partition includes a curved segment and a straight segment. The curved segment is in close contact with the inner wall of the cylindrical cavity, and the straight segment forms a flow port between itself and the inner wall of the cavity. The flow port is located at the inclined bottom end of the partition.

[0013] The resulting technical effect is that, since the partition is arranged at an angle in the cavity, considering the close contact between the partition and the inner wall of the cavity, the elliptical partition can be used to achieve a close fit between the partition and the inner wall of the cavity. At the same time, considering the exhaust process and the return of electrolyte, the adjacent cavities need to be connected. At this time, the bottom end of the inclined partition is cut off to form an outlet, which ensures the passage of gas while also realizing the return of electrolyte.

[0014] Preferably, an annular protrusion is formed inside the plug body and between the corresponding slot and the cavity, the air filter is embedded in the slot over the annular protrusion, and there is a gap between the air filter and the inner bottom surface of the plug body.

[0015] The resulting technical effect is that the annular protrusion is the foundation for ensuring the stable installation of the filter plate in the slot. Only after the filter plate passes over the annular protrusion and enters the slot can the core be installed in place, and it can also prevent the filter plate from vibrating and falling off.

[0016] Preferably, the plug body is an integrally molded injection molded body, the top cap of the plug body is provided with a rubber pad, the slot is located on the side near the top cap, the bottom of the slot is provided with a vent hole that passes through the top cap, the rubber pad is in close contact with the top surface of the battery cover, and the outer side wall of the plug body and the lower part corresponding to the top cap are provided with a threaded part for cooperating with and connecting the battery cover.

[0017] The resulting technical effect is that the vent plug is installed with an interference fit against the battery cover, and the rubber gasket is in tight contact with the battery cover, ensuring a leak-proof seal around the perimeter. Specifically, the bottom of the slot has a vent hole that extends through the top of the vent plug, allowing gas inside the battery cell to escape through the vent hole after passing through the vent core and filter. Attached Figure Description

[0018] Figure 1 This is an overall structural diagram of a lead-acid battery vent plug for preventing overflow according to this utility model;

[0019] Figure 2 This is a structural diagram of the lead-acid battery vent plug for preventing overflow according to this utility model;

[0020] Figure 3 This is a schematic diagram of the core structure of a lead-acid battery vent plug for preventing overflow according to this utility model.

[0021] Figure 4 This is a schematic cross-sectional view of a lead-acid battery vent plug designed to prevent overflow, according to this utility model.

[0022] 1. Bolt body, 11. Cavity, 12. Slot, 13. Top cap, 14. Groove, 2. Rubber pad, 3. Ring protrusion, 4. Bolt core, 41. Partition plate, 42. Support column, 43. Flat plate, 44. Straight section, 45. Arc section, 46. Guide block, 5. Angular positioning slot, 6. Air filter, 7. Partition cavity, 8. Exhaust hole. Detailed Implementation

[0023] 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.

[0024] See appendix to this utility model Figures 1 to 4 According to an embodiment of the present invention, a lead-acid battery vent plug for preventing overflow includes:

[0025] The plug body 1 has a cylindrical cavity 11 inside. The end of the plug body 1 corresponding to the cavity 11 has a slot 12 for engaging the filter plate 6. The side wall of the other end of the plug body 1 corresponding to the cavity has an angular positioning slot 5, and the slot of the angular positioning slot corresponds to the axial direction of the plug body.

[0026] The plug core 4 is detachably connected inside the cavity 11. The plug core 4 has four partitions 41 arranged at intervals from one end to the other. The two ends of the plug core 4 are arranged with flat plates 43. Between the two flat plates, three partitions 41 are arranged at intervals from one end to the other. The adjacent partitions 41 have opposite tilt angles. The support column 42 is arranged between the adjacent partitions. The two flat plates and three partitions 41 divide the cavity into four compartments 8 from one end to the other. This can relatively extend the distance of the gas passage, play the role of blocking and storing acid, thereby slowing down the flow of electrolyte to the filter plate and avoiding the risk of battery leakage. The adjacent compartments 8 are connected to form a gas flow and electrolyte return channel. It can be understood that the four compartments form a looping and tortuous channel that progresses towards the exhaust port. The flat plate 43 away from the slot is provided with a guide block 46. The guide block 46 is adapted to slide in the angular positioning slot.

[0027] In other embodiments, the support column 42 serves as the foundation for the stable installation of adjacent upper and lower partitions.

[0028] In some other specific embodiments, the outer contour of the plate 43 near the slot 12 includes a straight segment 44 and an arc segment 45. The arc segment 45 is adapted to fit the inner wall of the cavity 11. The straight segment 44 and the inner wall of the cavity 11 form a material passage, which ensures smooth exhaust while the intercepted acid can flow back into the single cell.

[0029] In other embodiments, the partition 41 is an irregular elliptical structure. The outer contour of the partition 41 includes curved segments and straight segments. The curved segments are in close contact with the inner wall of the cavity 11, and the straight segments form a flow port between the inner wall of the cavity and the flow port. The flow port is located at the inclined bottom end of the partition 41, which facilitates the return of electrolyte to the downstream.

[0030] In some other specific embodiments, an annular protrusion 3 is formed inside the plug body 1 and between the corresponding slot and the cavity. The filter 6 is a filter 6 specifically for AGM batteries, with a diameter of φ8.5mm and a thickness of 3.2mm. When the filter 6 is installed, it is embedded in the slot over the annular protrusion. The annular protrusion can prevent the filter 6 from falling off due to battery vibration. There is a gap between the filter 6 and the inner bottom surface of the plug body 1. The plug body is provided with an exhaust hole 8 above the filter 6. The gas passing through the filter 6 is finally discharged from the exhaust hole, while the intercepted electrolyte flows back into the cell.

[0031] In other embodiments, the flat plate near the slot 12 abuts against the annular protrusion 3 for limiting. If the filter is not installed properly, the plug core cannot be installed smoothly.

[0032] In some other embodiments, the plug body 1 is an integrally molded injection body. The top cap 13 of the plug body 1 is provided with a rubber pad 2. The top cap has a cross groove for easy unscrewing of the vent plug. The slot 12 is located on the side near the top cap 13. The rubber pad 2 is in close contact with the top surface of the battery cover. The outer side wall of the plug body 1 and the lower part corresponding to the top cap are provided with a threaded part for engaging and connecting the battery cover.

[0033] This utility model's vent plug reduces the risk of leakage and supports the independent venting system required for each cell in a single-layer cover design of lead-acid batteries.

[0034] The apparatus and methods disclosed in the embodiments are described simply because they correspond to the methods disclosed in the embodiments. For relevant details, please refer to the method section.

[0035] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A liquid spill resistant lead-acid battery vent plug, characterized by, include: The plug body (1) has a cavity (11) inside. The end of the plug body (1) corresponding to the cavity (11) is provided with a slot (12) for installing the filter plate (6). The side wall of the plug body (1) corresponding to the cavity is provided with an angular positioning slot (5). The inner wall near the other end of the cavity (11) is provided with a groove (14). The core (4) is detachably connected to the inside of the cavity (11). The core (4) has two flat plates (43) arranged at both ends. Multiple partitions (41) are arranged at intervals between the two flat plates from one end to the other. Adjacent partitions (41) have opposite tilt angles. Support columns (42) are arranged between adjacent partitions. The flat plates (43) and multiple partitions (41) divide the cavity into multiple compartments (7). Adjacent compartments (7) are connected to form a flow channel. The flat plate (43) at the end away from the slot is adapted to be connected in the groove (14). One end of the flat plate (43) is provided with a guide block (46) that matches the angular positioning groove (5).

2. A liquid spill-proof lead-acid battery vent plug according to claim 1, wherein, The outer contour of the plate (43) near the slot (12) includes a straight segment (44) and an arc segment (45). The arc segment (45) is adapted to closely fit the inner wall of the cavity (11), and a material passage is formed between the straight segment (44) and the inner wall of the cavity (11).

3. A liquid spill-proof lead-acid battery vent plug according to claim 1, wherein, The partition (41) is an irregular elliptical structure. The outer contour of the partition (41) includes a curved segment and a straight segment. The curved segment is in close contact with the inner wall of the cavity (11). The straight segment forms a flow port between itself and the inner wall of the cavity. The flow port is located at the inclined bottom end of the partition (41).

4. A liquid spill-proof lead-acid battery vent plug according to claim 1, wherein, An annular protrusion (3) is formed inside the plug body (1) and between the corresponding slot and the cavity. The air filter (6) is embedded in the slot over the annular protrusion (3). There is a gap between the air filter (6) and the inner bottom surface of the plug body (1).

5. A liquid spill-proof lead-acid battery vent plug according to claim 4, wherein, The plate near the slot (12) abuts against the annular protrusion (3) and is limited in position.

6. A liquid spill-proof lead-acid battery vent plug according to claim 1, wherein, The plug body (1) is an integrally molded injection body. The top cap (13) of the plug body (1) is provided with a rubber pad (2). The slot (12) is located on the side near the top cap (13). The bottom of the slot (12) is provided with an exhaust hole (8) that passes through the top cap (13). The rubber pad (2) is in close contact with the top surface of the battery cover. The outer side wall of the plug body (1) and the area below the top cap (13) are provided with a threaded part for connecting the battery cover.

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