Top cover exhaust structure of lead-acid storage battery

Abstract

The utility model relates to the technical field of storage battery top covers, in particular to a top cover exhaust structure of a lead-acid storage battery, which comprises a cover plate, a labyrinth channel is arranged at the lower end of the cover plate, fixing sleeves are fixedly mounted at four corners of the lower end of the cover plate, and four exhaust outer pipes are connected to the upper end of the cover plate in a penetrating manner. The four exhaust outer pipes are distributed in a rectangular array mode, and filtering pieces are detachably installed in the four exhaust outer pipes. A connecting groove is formed in the upper end of the exhaust outer pipe, an exhaust groove communicated with the interior of the connecting groove is formed in the lower end of the exhaust outer pipe, a one-way flexible diaphragm is fixedly arranged in the exhaust groove, and four clamping grooves are formed in the inner surface of the connecting groove in an annular array mode. According to the top cover exhaust structure of the lead-acid storage battery, the safety, the environmental protection property and the protection capability of the battery are improved, meanwhile, the top cover exhaust structure is easy to maintain, the service life is prolonged, and the overall reliability is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of battery top cover technology, and in particular to a top cover venting structure for a lead-acid battery. Background Technology

[0002] Currently, lead-acid batteries, as widely used energy storage devices, produce gases such as hydrogen and oxygen during charging and discharging. These gases accumulate inside the battery, causing pressure to rise. If not vented in time, they can not only affect battery performance but also pose safety hazards, such as the risk of explosion. Traditional venting structures often suffer from poor sealing, ineffective prevention of outside air ingress, and a lack of effective purification of the vented gases, failing to fully meet the high safety and environmental protection standards required for modern applications. Furthermore, during outdoor use, rainwater or other liquids can easily enter the battery through the vent, further increasing the risk of malfunction. Therefore, we propose a top-cover venting structure for lead-acid batteries. Utility Model Content

[0003] The main objective of this invention is to provide a top cover venting structure for lead-acid batteries, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A top cover exhaust structure for a lead-acid battery includes a cover plate, a labyrinthine channel at the lower end of the cover plate, fixed sleeves at the four corners of the lower end of the cover plate, and four exhaust pipes inserted through the upper end of the cover plate, which are arranged in a rectangular array. Each of the four exhaust pipes can be detachably installed with a filter.

[0006] The upper end of the exhaust pipe is provided with a connecting groove, and the lower end of the exhaust pipe is provided with an exhaust groove that communicates with the interior of the connecting groove. A one-way flexible diaphragm is fixedly installed in the exhaust groove, and four slots are arranged in a ring array on the inner surface of the connecting groove.

[0007] Preferably, the outer diameter of the unidirectional flexible diaphragm is equal to the inner diameter of the exhaust groove.

[0008] By adopting the above technical solution: the unidirectional flexible diaphragm is made of corrosion-resistant, elastic and durable materials, such as fluororubber or silicone. For the installation of the unidirectional flexible diaphragm and the exhaust channel, conventional methods widely recognized and applied in the industry can be used. The connection between the unidirectional flexible diaphragm and the exhaust channel also follows these mature installation principles. Specific details will not be repeated, but the application based on existing technology and conventional methods will be emphasized.

[0009] Preferably, the filter element includes a limiting sleeve, the lower end of which is integrally formed with an exhaust inner pipe, the lower end of which is integrally formed with an extension portion, and the limiting sleeve, the exhaust inner pipe and the extension portion are coaxially arranged, and an activated carbon filter element is fixedly installed inside the exhaust inner pipe.

[0010] By adopting the above technical solution, using an activated carbon filter element, harmful components such as sulfuric acid mist can be adsorbed during the gas discharge process, while preventing external dust and other impurities from entering the battery, significantly improving the system's environmental performance and reducing the risk of environmental pollution.

[0011] Preferably, the height of the inner exhaust pipe is equal to the height of the connecting groove, and the outer surface of the inner exhaust pipe is integrally formed with a locking block that engages with the locking groove. The inner exhaust pipe is installed in the connecting groove by the locking block, and the limiting sleeve is located at the upper end of the outer exhaust pipe.

[0012] By adopting the above technical solution, the filter element is connected to the slot on the exhaust pipe by a clip, making it extremely easy to replace the activated carbon filter element. The operation can be completed without any special tools, which not only ensures long-term effective filtration, but also facilitates regular maintenance and cleaning by users, ensuring that the battery is always in the best working condition and extending its service life.

[0013] Preferably, the outer diameter of the extension is equal to the inner diameter of the exhaust groove, and the extension extends into the exhaust groove and is located above the unidirectional flexible diaphragm.

[0014] Preferably, the outer surface of the limiting sleeve is provided with buckle grooves on both sides.

[0015] By adopting the above technical solution, it is convenient to disassemble and assemble the filter element.

[0016] Preferably, a plurality of support rods are fixedly installed on the upper end of the limiting sleeve, and the plurality of support rods are arranged in a ring array around the axis of the limiting sleeve, and a waterproof top plate is fixedly installed on the upper end of the plurality of support rods.

[0017] By adopting the above technical solution, the waterproof top plate is securely installed above the limiting sleeve by the support rod, which increases the stability of the structure.

[0018] The bottom diameter of the waterproof top plate is larger than the diameter of the limiting sleeve.

[0019] By adopting the above technical solution, rainwater or other liquids can be effectively prevented from falling directly into the vent, ensuring that the battery can operate normally even under severe weather conditions.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. By installing a unidirectional flexible diaphragm within the venting channel, when the internal pressure of the battery increases, the gas pushes the diaphragm outward, opening the venting channel and allowing the gas to escape smoothly. When the internal pressure decreases or reaches equilibrium with the external environment, the diaphragm automatically returns to its original position, forming a seal. This design effectively achieves unidirectional gas discharge from the battery, preventing external air from entering the battery through the vent and thus preventing potential chemical reactions or other safety hazards. It also significantly improves the safety and reliability of lead-acid batteries. Especially under extreme conditions, such as high temperature or high humidity environments, this design effectively protects the battery from the effects of the external environment.

[0022] 2. Through the design of the filter element, utilizing its built-in activated carbon filter, harmful components such as sulfuric acid mist can be adsorbed during gas exhaust, while preventing external dust and other impurities from entering the battery. This significantly improves the system's environmental performance and reduces the risk of pollution. Furthermore, because the filter element connects to the slot on the exhaust pipe using a locking mechanism, replacing the activated carbon filter is extremely simple and can be done without any special tools. This not only ensures long-term effective filtration but also facilitates regular maintenance and cleaning by the user, ensuring the battery is always in optimal working condition and extending its lifespan.

[0023] 3. A specially designed waterproof top plate with a diameter larger than the limiting sleeve effectively prevents rainwater or other liquids from directly falling into the vent, ensuring the battery can operate normally even in harsh weather conditions. Furthermore, the waterproof top plate is securely mounted above the limiting sleeve via support rods, increasing structural stability. This not only improves the overall protection level of the battery, making it more suitable for various complex operating environments, such as open-air locations and industrial sites, but also provides users with a more convenient and reliable solution, reducing the failure rate caused by external factors and enhancing the user experience. Attached Figure Description

[0024] Figure 1 This is a first-view schematic diagram of the overall structure of the top cover venting structure of a lead-acid battery according to the present invention.

[0025] Figure 2 This is a second-view schematic diagram of the overall structure of the top cover venting structure of a lead-acid battery according to the present invention.

[0026] Figure 3 This is a schematic diagram of the top cover venting structure of a lead-acid battery according to the present invention.

[0027] Figure 4 This is a schematic diagram of the exhaust pipe of the top cover exhaust structure of a lead-acid battery according to the present invention.

[0028] Figure 5 This is a schematic diagram of the filter element of the top cover exhaust structure of a lead-acid battery according to the present invention.

[0029] In the diagram: 1. Cover plate; 2. Labyrinthine channel; 3. Fixing sleeve; 4. Exhaust outer pipe; 41. Connecting groove; 42. Exhaust groove; 43. One-way flexible membrane; 44. Slot; 5. Filter element; 51. Limiting sleeve; 52. Exhaust inner pipe; 53. Extension; 54. Activated carbon filter element; 55. Clip groove; 56. Locking block; 57. Support rod; 58. Waterproof top plate. Detailed Implementation

[0030] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0031] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] Please see Figure 1-5 This utility model provides a technical solution:

[0034] A top cover exhaust structure for a lead-acid battery includes a cover plate 1, a labyrinthine channel 2 at the lower end of the cover plate 1, fixing sleeves 3 fixedly installed at the four corners of the lower end of the cover plate 1, and four exhaust pipes 4 inserted and connected to the upper end of the cover plate 1, the four exhaust pipes 4 being arranged in a rectangular array, and filters 5 being detachably installed inside each of the four exhaust pipes 4.

[0035] In this embodiment, the upper end of the exhaust pipe 4 is provided with a connecting groove 41, and the lower end of the exhaust pipe 4 is provided with an exhaust groove 42 that communicates with the interior of the connecting groove 41. A one-way flexible diaphragm 43 is fixedly installed in the exhaust groove 42. The inner surface of the connecting groove 41 is provided with four slots 44 arranged in a ring array. The outer diameter of the one-way flexible diaphragm 43 is equal to the inner diameter of the exhaust groove 42.

[0036] The above solution involves installing a unidirectional flexible diaphragm 43 within the venting groove 42. When the internal pressure of the battery increases, the gas pushes the unidirectional flexible diaphragm 43 outward, opening the venting channel and allowing the gas to escape smoothly. When the internal pressure decreases or reaches equilibrium with the external environment, the unidirectional flexible diaphragm 43 automatically returns to its original position, forming a seal. This design effectively achieves unidirectional gas discharge from the battery, preventing external air from entering the battery through the vent and thus preventing potential chemical reactions or other safety hazards. It also significantly improves the safety and reliability of lead-acid batteries. Especially under extreme conditions, such as high temperature or high humidity environments, this design effectively protects the battery from the influence of the external environment.

[0037] In this embodiment, the filter element 5 includes a limiting sleeve 51. The lower end of the limiting sleeve 51 is integrally formed with an exhaust inner tube 52, and the lower end of the exhaust inner tube 52 is integrally formed with an extension portion 53. The limiting sleeve 51, the exhaust inner tube 52, and the extension portion 53 are coaxially arranged. An activated carbon filter element 54 is fixedly installed inside the exhaust inner tube 52. The height of the exhaust inner tube 52 is equal to the height of the connecting groove 41. The outer surface of the exhaust inner tube 52 is integrally formed with a locking block 56 that engages with the locking groove 44. The exhaust inner tube 52 is engaged and installed in the connecting groove 41 by the locking block 56, and the limiting sleeve 51 is located at the upper end of the exhaust outer tube 4. The outer diameter of the extension portion 53 is equal to the inner diameter of the exhaust groove 42. The extension portion 53 extends into the exhaust groove 42 and is located above the unidirectional flexible membrane 43. The outer surface of the limiting sleeve 51 is provided with a buckle groove 55 on both sides.

[0038] Through the above solution, the design of filter element 5, utilizing its built-in activated carbon filter element 54, can adsorb harmful components such as sulfuric acid mist during gas discharge, while preventing external dust and other impurities from entering the battery, significantly improving the system's environmental performance and reducing the risk of environmental pollution. Furthermore, because filter element 5 is connected to the slot 44 on the exhaust pipe 4 via a locking block 56, replacing the activated carbon filter element 54 is extremely simple, requiring no special tools. This not only ensures long-term effective filtration but also facilitates regular maintenance and cleaning by the user, ensuring the battery is always in optimal working condition and extending its lifespan.

[0039] In this embodiment, a plurality of support rods 57 are fixedly installed on the upper end of the limiting sleeve 51, and the plurality of support rods 57 are arranged in a ring array around the axis of the limiting sleeve 51. A waterproof top plate 58 is fixedly installed on the upper end of the plurality of support rods 57. The bottom diameter of the waterproof top plate 58 is larger than the diameter of the limiting sleeve 51.

[0040] Through the above solution, a specially designed waterproof top plate 58 with a diameter larger than that of the limiting sleeve 51 can effectively prevent rainwater or other liquids from directly falling into the vent, ensuring that the battery can operate normally without being affected even in severe weather conditions. Furthermore, the waterproof top plate 58 is securely installed above the limiting sleeve 51 via support rods 57, increasing structural stability. This not only improves the overall protection level of the battery, making it more suitable for various complex operating environments, such as open-air locations and industrial sites, but also provides users with a more convenient and reliable solution, reducing the failure rate caused by external factors and enhancing the user experience.

[0041] It should be noted that this utility model is a top cover venting structure for a lead-acid battery. During use, when the lead-acid battery starts working, especially during charging or discharging, gas is generated. These gases mainly include hydrogen and oxygen, which accumulate inside the battery and cause the pressure to rise. As the internal pressure of the battery increases, these gases first pass through the labyrinthine channel 2 set below the cover plate 1. The labyrinthine channel 2 design helps to evenly distribute the gas flow and reduces the possibility of direct impact on the unidirectional flexible diaphragm 43, thereby protecting the unidirectional flexible diaphragm 43 from damage. The gas continues to move upward to the venting groove 42 at the bottom of the venting outer pipe 4. At this time, because the internal pressure is greater than the external environmental pressure, the unidirectional flexible diaphragm 43 is bent outward by the pressure of the gas, opening the venting channel and allowing the gas to pass through. Once the gas passes through the unidirectional flexible diaphragm 43, it will enter the venting inner pipe 52 inside the filter element 5, where the activated carbon filter element 54 adsorbs harmful gas components, such as sulfuric acid mist, while preventing external dust and other impurities from entering the battery. When the internal pressure decreases or reaches equilibrium with the external environment, the unidirectional flexible diaphragm 43 will automatically return to its original position due to its own elasticity and prestress, tightly fitting into the exhaust groove 42 to form a seal. This effectively prevents outside air from entering the battery through the exhaust port, avoiding potential chemical reactions or other safety hazards. In daily use, especially in outdoor environments, rainwater or other liquids may splash onto the exhaust port. To solve this problem, a waterproof top plate 58 is installed above the limiting sleeve 51. The diameter of the waterproof top plate 58 is larger than that of the limiting sleeve 51, which can effectively prevent rainwater or other liquids from falling directly into the exhaust port. It can be easily disassembled and installed through the locking block 56 and the slot 44 on the exhaust outer pipe 4. This not only makes it very simple and quick to replace the activated carbon filter element 54 regularly, but also requires no special tools, making it convenient to operate and ensuring long-term effective filtration.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A top cover venting structure for a lead-acid battery, comprising a cover plate (1), characterized in that: The lower end of the cover plate (1) is provided with a maze-like channel (2), and the four corners of the lower end of the cover plate (1) are fixedly installed with fixing sleeves (3). The upper end of the cover plate (1) is connected with four exhaust pipes (4), and the four exhaust pipes (4) are arranged in a rectangular array. Filters (5) can be detachably installed in the four exhaust pipes (4). The upper end of the exhaust pipe (4) is provided with a connecting groove (41), and the lower end of the exhaust pipe (4) is provided with an exhaust groove (42) that communicates with the interior of the connecting groove (41). A one-way flexible diaphragm (43) is fixedly installed in the exhaust groove (42), and four slots (44) are arranged in a ring array on the inner surface of the connecting groove (41).

2. The top cover venting structure of a lead-acid battery according to claim 1, characterized in that: The outer diameter of the unidirectional flexible diaphragm (43) is equal to the inner diameter of the exhaust groove (42).

3. The top cover venting structure of a lead-acid battery according to claim 1, characterized in that: The filter element (5) includes a limiting sleeve (51), the lower end of which is integrally formed with an exhaust inner tube (52), the lower end of which is integrally formed with an extension (53), and the limiting sleeve (51), the exhaust inner tube (52) and the extension (53) are coaxially arranged, and an activated carbon filter element (54) is fixedly installed inside the exhaust inner tube (52).

4. The top cover venting structure of a lead-acid battery according to claim 3, characterized in that: The height of the inner exhaust pipe (52) is equal to the height of the connecting groove (41). The outer surface of the inner exhaust pipe (52) is integrally formed with a locking block (56) that engages with the locking groove (44). The inner exhaust pipe (52) is installed in the connecting groove (41) by the locking block (56) and the limiting sleeve (51) is located at the upper end of the outer exhaust pipe (4).

5. The top cover venting structure of a lead-acid battery according to claim 3, characterized in that: The outer diameter of the extension (53) is equal to the inner diameter of the exhaust groove (42), and the extension (53) extends into the exhaust groove (42) and is located above the unidirectional flexible diaphragm (43).

6. The top cover venting structure of a lead-acid battery according to claim 3, characterized in that: The limiting sleeve (51) has fastening grooves (55) on both sides of its outer surface.

7. The top cover venting structure of a lead-acid battery according to claim 3, characterized in that: The upper end of the limiting sleeve (51) is fixedly installed with multiple support rods (57), and the multiple support rods (57) are arranged in a ring array around the axis of the limiting sleeve (51). The upper ends of the multiple support rods (57) are fixedly installed with a waterproof top plate (58).

8. The top cover venting structure of a lead-acid battery according to claim 7, characterized in that: The bottom diameter of the waterproof top plate (58) is larger than the diameter of the limiting sleeve (51).

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