Lead-acid battery grid structure
A lead-acid battery and grid technology, applied in the direction of electrode carrier/collector, etc., can solve the problems of battery capacity attenuation, battery compression ratio drop, large internal rib spacing, etc., achieve good plate consistency and improve battery performance , The effect of uniform plate thickness
Inactive Publication Date: 2014-11-26
SHUANGDENG GRP
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Problems solved by technology
The existing lead-acid battery grid has relatively large spacing between ribs, and the thickness of the inner ribs is generally slightly smaller than the thickness of the outer frame. It is difficult to control the thickness of the plate after the paste is applied, and the consistency is not good
This will directly lead to a decrease in the compression ratio of the battery, and the decrease in the pressure between the diaphragm and the plate will intensify the stratification of the acid solution in the battery, and will also cause the lead paste far away from the ribs to fail to participate in the reaction, causing the battery capacity to decay
Method used
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[0013] see figure 1 , figure 2 , the inner ribs 2 in the grid are thin and dense, the inner ribs are cylindrical, and their diameter is 1 / 2 of the thickness of the outer frame 1. In this example, the distance between the inner ribs is 10mm, and the diameter of the inner ribs is 2mm. The inside of the outer frame is provided with longitudinal and transverse thick ribs 3, and the thickness of the thick ribs is consistent with the thickness of the outer frame.
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The invention provides a lead-acid battery grid structure which comprises an outer frame and internal ribs. The internal ribs are thin and dense, and thickness or diameter of the internal ribs is less than or equal to 1 / 2 of thickness of the outer frame but greater than or equal to 1.2 mm. spacing between each two adjacent internal ribs is 5-15 mm. Thick ribs which have consistent thickness with the outer frame are arranged at the inner part of the outer frame. The lead-acid battery grid structure is used for making a battery plate. During pasting, the pasting thickness is easy to control and consistency is good. Contact area between the ribs and lead paste is large so as to improve current distribution. The distance between the lead paste and the ribs is near. Capacity loss caused by softening of the lead paste is alleviated. Thus, battery performance is enhanced and service life of a battery is prolonged.
Description
technical field [0001] The invention relates to the lead-acid battery industry, in particular to a novel lead-acid battery grid structure. Background technique [0002] With the development of lead-acid battery grid alloy technology, battery failure caused by grid corrosion is decreasing day by day, but lead paste softening is still one of the main reasons for battery failure. More battery plates on the market are lead paste wrapped grids, and the lead paste will inevitably soften during battery operation. The existing lead-acid battery grid has relatively large spacing between ribs, and the thickness of the inner ribs is generally slightly smaller than the thickness of the outer frame. It is difficult to control the thickness of the electrode plate after paste application, and the consistency is not good. This will directly lead to a decrease in the compression ratio of the battery, and the decrease in the pressure between the diaphragm and the plate will intensify the...
Claims
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Login to View More IPC IPC(8): H01M4/73
CPCH01M4/73Y02E60/10
Inventor 段好强吴宏亮
Owner SHUANGDENG GRP