Storage battery cover for flooded lead-acid storage battery

Abstract

A storage battery cover for a flooded lead-acid storage battery comprises a large cover and an exhaust cover, two sides of the exhaust cover are respectively provided with an air filter piece cavity, two air filter piece mounting holes are arranged in the air filter piece cavities along the width direction of the exhaust cover, the air filter piece mounting hole close to the edge of the exhaust cover is communicated with a labyrinth channel, and the labyrinth channel is communicated with the large cover. An air filtering piece is arranged at the upper part in each air filtering piece mounting hole, the two air filtering pieces are equal in height, the air filtering piece mounting hole which is not communicated with the labyrinth channel is communicated with an exhaust hole, the exhaust hole is provided with a water blocking table, the water blocking table is positioned at an inlet of the exhaust hole, and the lower part of the exhaust hole is blocked by the water blocking table; a deep-cavity acid storage tank is arranged on the large cover corresponding to the air filter sheet mounting cavity, the deep-cavity acid storage tank is in a three-layer step shape, a shallow tank, a middle tank and a deep tank are sequentially arranged from the outer wall of the large cover to the inside, and a partition plate is arranged between the middle tank and the deep tank. The storage battery cover is subjected to multiple improvements, and the improvements jointly achieve the effects of promoting overflowing electrolyte to flow back and preventing the air filtering piece from being soaked.

Description

technical field [0001] The invention relates to a battery cover for a liquid-rich lead-acid battery, which belongs to the technical field of batteries. Background technique [0002] Most of the vehicle batteries are flooded lead-acid batteries. The battery tank of the flooded lead-acid battery includes multiple cells, each cell is filled with electrolyte, and the upper part of the flooded lead-acid battery tank is heat-sealed. The battery cover is composed of a large cover and an exhaust cover, and the exhaust cover is heat-sealed on the upper part of the large cover. A liquid injection hole and a return hole are provided on the large cover, and a labyrinth channel structure composed of an acid retaining wall is provided for each cell between the large cover and the exhaust cover. An air filter is arranged on both sides of the exhaust cover, and an exhaust hole is arranged on the outer wall of the exhaust cover next to the air filter. There are many problems in the battery...

AI Technical Summary

Problems solved by technology

There are many problems in the battery cover of ordinary flooded lead-acid batteries, mainly as follows: 1. The vehicle battery will inevitably experience bumps and vibrations during use, which will cause electrolyte overflow, and the overflow electrolyte will disperse in the The flat area of ​​the large cover affects the rapid return of the electrolyte and is easy to retain; 2. When the car is running for a long time, the battery will be overcharged for a long time, and a large amount of gas will be generated inside the battery. When the gas is exhausted violently, part of the liquid will be discharged. , wet the air filter, there may be leakage from the vent hole; 3. The washing water in the battery production process or the condensed water in the vent hole during use may enter the air filter through the vent hole 4. There is no liquid storage tank or the liquid storage tank is too shallow at the position corresponding to the air filter on the large cover. When there is a lot of electrolyte in the liquid storage tank, it is easy to wet the air filter. ;5. The centering error between the exhaust cover and the large cover during heat sealing, the design of thickening the acid wall can make up for the sealing problem caused by the centering error, but it will reduce the flow area of ​​the labyrinth channel

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