Polar group fastening structure for lead-acid storage battery
A lead-acid battery, fastening structure technology, applied in lead-acid battery, lead-acid battery construction, sustainable manufacturing/processing and other directions, can solve the problem of thin grid ribs, large deformation space, increased internal resistance, etc. problems, to achieve the effect of improving cycle life, suppressing longitudinal elongation, and improving float life.
Inactive Publication Date: 2015-04-22
SHUANGDENG GRP
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Problems solved by technology
In the conventional pole group structure, the upper part of the upper frame of the grid is the tab and busbar, which has a large deformation space, and the deformation resistance is mainly at the tab. The deformation of other parts of the upper frame other than the tab is obvious in the later period of use. Influenced by the corrosion of the grid alloy, the internal ribs of the grid are easy to become thinner or even broken, and the internal resistance increases, which eventually leads to the failure of the battery
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[0010] see figure 1 , the top of the lead-acid battery electrode group 1 is provided with an upper splint 3, and the bottom is provided with a lower splint 6, both of which are fastened by a packing belt 5. On the upper splint, there are ear holes corresponding to the tabs 2 with gaps and acid permeable Hole 4, the diameter of the acid penetration hole in the middle is larger than the other acid penetration holes, the thickness of the upper splint is 6mm, and the thickness of the lower splint is 5mm, both of which are made of PC-ABS alloy material.
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The invention provides a polar group fastening structure for a lead-acid storage battery. An upper clamp plate and a lower clamp plate are respectively arranged on the top and the bottom of a polar group and are tightened by a packing belt, and a lug hole and an acid penetrating hole are formed in the upper clamp plate. The polar group fastening structure provided by the invention is used for assembling the polar group of the lead-acid storage battery, and can be used for effectively inhibiting longitudinal extension of a grid and maintaining the stability of the grid structure in a charge and discharge process of the battery particularly for the battery with the anode which is lead-calcium alloy, and meanwhile, the influence caused by longitudinal extension of the grid on internal resistance is reduced and the service life of the battery is prolonged.
Description
technical field [0001] The invention relates to a lead-acid battery electrode group fastening structure, which belongs to the field of lead-acid batteries. Background technique [0002] Most of the current positive grid alloys of lead-acid batteries are lead-calcium alloys. In the failure mode of floating charging and recycling, the corrosion and elongation of the grid will cause the internal resistance of the grid to increase, accounting for a large proportion. In the conventional pole group structure, the upper part of the upper frame of the grid is the tab and busbar, which has a large deformation space, and the deformation resistance is mainly at the tab. The deformation of other parts of the upper frame other than the tab is obvious in the later period of use. Influenced by the corrosion of the grid alloy, the internal ribs of the grid are easy to become thinner or even broken, and the internal resistance increases, which eventually leads to the failure of the battery....
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IPC IPC(8): H01M10/14
CPCH01M10/14Y02E60/10Y02P70/50
Inventor 李亚辉肖振华张明蔡先玉李静
Owner SHUANGDENG GRP