Lead-acid battery electrolyte anti-fluctuation device
By incorporating a substrate and a crisscrossing protrusion structure within the lead-acid battery, combined with vent holes, the leakage problem of the electrolyte under strong vibration conditions was solved, achieving electrolyte stability and normal operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HOHAI UNIV
- Filing Date
- 2025-05-09
- Publication Date
- 2026-04-17
AI Technical Summary
In strong earthquake conditions, the electrolyte in lead-acid batteries can easily leak through the sealing cracks between the top cover and the casing, leading to resonance and standing wave phenomena, and causing structural damage.
A substrate is placed above the electrolyte inside the battery. The bottom of the substrate has crisscrossing protrusions and vent holes. The substrate is made of foamed rubber sheet. The protrusions hinder electrolyte fluctuations, and the vent holes allow gas to escape, reducing resonance and standing wave generation.
It effectively reduces electrolyte fluctuations caused by vibration, prevents leakage, ensures normal operation of lead-acid batteries, and allows charging and discharging gases to escape through the vent.
Smart Images

Figure CN224138165U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to lead-acid batteries, and more particularly to a device for preventing fluctuations in lead-acid battery electrolyte. Background Technology
[0002] Lead-acid batteries mainly consist of positive and negative plates, separators, electrolyte, casing, and other auxiliary components. The sealing between the battery cover and the casing, and the prevention of electrolyte leakage, are crucial to the normal operation of the lead-acid battery in certain environments (such as strong earthquake environments). For example, electrolyte leakage is unacceptable in important computer rooms and nuclear power plants. The battery cover serves to fix the positive and negative electrodes and allow venting. Over time, the electrodes may elongate, causing deformation of the cover or, in severe cases, cracks to appear between the cover and the casing. Under strong earthquakes, the electrolyte inside the battery can resonate and generate standing waves, allowing it to leak through the sealing cracks between the cover and the casing, damaging surrounding structures.
[0003] To reduce the impact of electrolyte resonance and standing waves, a wave-damping device needs to be designed to lower the height of electrolyte standing waves and weaken their resonance energy, so that the electrolyte will not cause structural damage due to strong earthquakes and meet the requirements of the operating environment. Summary of the Invention
[0004] Purpose of the utility model: The purpose of this utility model is to provide a lead-acid battery electrolyte anti-vibration device that can reduce electrolyte fluctuations caused by vibration.
[0005] Technical solution: The lead-acid battery electrolyte anti-fluctuation device of this utility model includes a base disposed inside the battery and covering the electrolyte. The bottom of the base is provided with a plurality of crisscrossing protrusions, and the base is provided with a plurality of vent holes for venting.
[0006] The substrate covers the electrolyte, and its bottom has multiple crisscrossing protrusions that can impede the fluctuations of the electrolyte caused by external vibrations, thereby greatly reducing the energy generated by the electrolyte due to resonance and standing waves. At the same time, the substrate has multiple vent holes for venting. During charging and discharging, gas can be discharged through the vent holes, and electrolyte that leaks into the upper part during fluctuations can also flow back into the tank through the vent holes.
[0007] Preferably, the protrusion is a triangular prism with one side conforming to the surface of the substrate.
[0008] The triangular prism structure allows the gas generated by the electrolyte to quickly gather on both sides, while increasing the buoyancy of the substrate. There is a certain space between the substrate and the electrolyte, which facilitates the accumulation and discharge of gas. Furthermore, the staggered arrangement of the triangular prisms also prevents the electrolyte from fluctuating due to vibration.
[0009] Preferably, the thickness of the substrate is less than the distance between the electrolyte and the top of the battery.
[0010] A substrate thickness smaller than the distance between the electrolyte and the top of the battery allows for adequate space to accommodate the emissions of gases generated during the charging and discharging process.
[0011] Preferably, the plurality of protrusions are spaced apart, and the vent holes are disposed in the gaps between the protrusions.
[0012] The raised gaps allow gas to accumulate in the gaps, while the vent holes in the gaps effectively allow the gas to escape.
[0013] Preferably, the substrate is a foamed rubber sheet.
[0014] The substrate is made of foamed rubber sheet, which can float on the electrolyte and fluctuate accordingly. This can also reduce energy and reduce the amplitude of electrolyte fluctuation.
[0015] Preferably, the substrate is provided with through holes that match the pole post.
[0016] The substrate has through holes that match the pole post for easy installation.
[0017] Beneficial effects: Compared with the prior art, the beneficial effects of this utility model are as follows: by covering the substrate on the electrolyte and setting multiple protrusions in a crisscross pattern on the bottom of the substrate, the electrolyte fluctuation caused by vibration can be effectively weakened, the generation of resonance and standing waves can be reduced, and electrolyte leakage can be prevented. At the same time, the vent holes on the substrate can also allow the gas generated during charging and discharging to be discharged normally, ensuring the normal operation of the lead-acid battery. Attached Figure Description
[0018] Figure 1 A partial cross-sectional view of the lead-acid battery on which this device is installed;
[0019] Figure 2 This is a bottom view of the device. Detailed Implementation
[0020] As shown in the figure, the lead-acid battery electrolyte anti-fluctuation device of this utility model includes a base 1 disposed inside the battery and covering the electrolyte. The bottom of the base 1 is provided with a plurality of crisscrossing protrusions 2, and the base 1 is provided with a plurality of vent holes 3 for venting.
[0021] The lead-acid battery includes a housing 5 and a top cover 6. The electrolyte is placed inside the housing 5. The top of the housing 5 is open, and the top cover 6 is used to cover the opening. The top cover 6 can be equipped with a vent hole or a safety valve for venting.
[0022] The substrate 1 is made of foamed rubber sheet, and the thickness of the substrate 1 is less than the distance between the electrolyte and the top of the battery; the substrate 1 is provided with through holes 4 that match the electrode posts.
[0023] The protrusion 2 is a triangular prism with one side attached to the surface of the substrate 1. The triangular prism can be a regular triangular prism. Multiple protrusions 2 are spaced apart, so that there is a cavity structure between adjacent protrusions 2. This structure is conducive to the convergence of gas generated during charging and discharging. Vent holes 3 are provided in the cavities (gap) between adjacent protrusions 2, and the converged gas is discharged through the vent holes 3. The crisscrossing triangular prism structure helps to reduce the resonance and standing waves generated by the electrolyte, reduce the fluctuation amplitude of the electrolyte, and prevent electrolyte splashing.
Claims
1. A lead acid battery electrolyte surge damper characterized by: It includes a substrate (1) that is disposed inside the battery and covers the electrolyte. The bottom of the substrate (1) has multiple crisscrossing protrusions (2) and multiple vent holes (3) for venting.
2. The lead-acid battery electrolyte surge damper of claim 1, wherein: The protrusion (2) is a triangular prism whose side surface is attached to the surface of the substrate (1).
3. The lead-acid battery electrolyte surge arrestor of claim 2, wherein: The triangular prism is a regular triangular prism.
4. The lead acid battery electrolyte surge prevention device of claim 1, wherein: The thickness of the substrate (1) is less than the distance between the electrolyte and the top of the battery.
5. The lead acid battery electrolyte surge prevention device of claim 1, wherein: The plurality of protrusions (2) are spaced apart, and the ventilation holes (3) are disposed in the gaps between the protrusions (2).
6. The lead acid battery electrolyte surge damper of claim 1, wherein: The substrate (1) is made of foamed rubber sheet.
7. The anti-fluctuation device for lead-acid battery electrolyte according to claim 1, characterized in that: The substrate (1) is provided with through holes (4) that match the pole post.