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A detection method and time-sensitive technology, applied in the direction of measurement device, strength characteristics, and the use of stable tension/pressure to test the strength of materials, etc., to avoid deformation and cards, improve the pass rate of slitting, and the detection method is simple and accurate.
Active Publication Date: 2019-11-19
ZHEJIANG TIANNENG BATTERY JIANGSU NEW ENERGY
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[0004] Purpose of the invention: Aiming at the problems existing in the prior art, the present invention provides a method for detecting the timeliness of battery grids. The detection method is simple and accurate, and the aging hardening meets the process requirements, which is beneficial to smearing, avoids deformation and quality problems such as cards, and improves Pass rate of plate cutting
Method used
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Embodiment approach 1
[0014] This embodiment provides a method for detecting the timeliness of a battery grid, including the following steps:
[0015] A. Randomly select 10 large grids, and randomly cut out a small grid from the 10 large grids respectively, to obtain 10 small grids;
[0016] B. Measure the pre-detection length of one of the diagonals of the 10 small grids respectively, and obtain a total of 10 pre-detection lengths (in mm);
[0018] C. If figure 1 , hang 10 small grids respectively, and keep the diagonal line measured above vertically, and then hang a weight of 100g at the bottom of the diagonal line;
[0019] D. After hanging for 60s, remove the small grid, and measure the post-detection lengths of the above-mentioned diagonals of the 10 small grids again, and obtain a total of 10 post-test lengths (in mm);
[0020] 1 2 3 4 5 6 7 8 9 10 ...
Embodiment approach 2
[0023] This embodiment provides a method for detecting the timeliness of a battery grid, including the following steps:
[0024] Steps A-D are exactly the same as those in Embodiment 1, and will not be repeated here.
[0025] E. Calculated by the above 10 pre-test lengths and 10 post-test lengths, the average value of the extreme difference is 0.49mm, which is less than the reference value of 0.5mm, indicating that the deformation of the grid is small, and the aging strength of the grid meets the process requirements .
Embodiment approach 3
[0027] This embodiment provides a method for detecting the timeliness of a battery grid, including the following steps:
[0028] Steps A-D are exactly the same as those in Embodiment 1, and will not be repeated here.
[0029] E. Calculated by the above 10 pre-test lengths and 10 post-test lengths, the average value of the extreme difference is 0.45mm, which is less than the reference value of 0.5mm, indicating that the deformation of the grid is small, and the aging strength of the grid meets the process requirements .
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Abstract
The invention belongs to the field of storage batteries and discloses a storage battery grid ageing performance detection method. The method comprises the following steps that: N large grids are randomly sampled, the N large grids are randomly sheared, so that small grids can be obtained; the pre-detection length of one diagonal line of each of the N small grids is measured; the N small grids aresuspended with the diagonal lines kept vertically, and weights of preset weight are hung at the bottoms of the diagonal lines; the weights are taken off after having been suspended for preset time, the post-detection length of the diagonal line of each of the N small grids is measured, and N post-detection lengths are altogether obtained; if the average number of the range difference values calculated on the basis of the N pre-detection lengths and the N post-detection lengths is smaller than a reference value, the ageing strength of the grids meets process requirements, otherwise, the ageingstrength of the grids fail to meet the process requirement. Compared with the prior art, the detection method disclosed by the invention is simple, convenient, and accurate, satisfies aging hardeningtechnological requirements, benefits coating, and can assist in avoiding quality problems such as deformation and grid sticking and improving the slitting pass percent of polar plates.
Description
technical field [0001] The invention relates to the field of storage batteries, in particular to a method for detecting the timeliness of storage battery grids. Background technique [0002] The grid is a key component of the lead-acid battery, and its role is mainly manifested in two aspects: one is as a "skeleton" to support the positive and negative active materials, and the other is as a conductor of current, which serves as an output and input for each part of the plate. The effect of current. As a skeleton, the grid must have good mechanical properties; as a current conductor, the grid must have good bonding ability with the active material. The lead-acid battery grid material is mainly lead, and appropriate amount of other metal elements are added according to different purposes, and it is formed by casting, pulling, punching, continuous casting and other methods. Different molding methods lead to differences in the mechanical properties of the grid and the ability ...
Claims
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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/08G01N3/02
CPCG01N3/02G01N3/08
Inventor 李军孙磊岳宝胡国柱
Owner ZHEJIANG TIANNENG BATTERY JIANGSU NEW ENERGY
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