Meshed steel band for cell electrode piece and producing method therefor
A technology of battery electrodes and steel strips, applied in the manufacture of mesh-shaped steel strips, and the field of mesh-shaped steel strips, can solve the problems of inability to meet the requirements of high-quality batteries, high surface density of pole pieces, unstable performance, etc. Effective utilization, high mechanical strength, and material cost reduction
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Embodiment 1
[0038] Such as image 3 Shown, the inventive method comprises the steps:
[0039] a. Use raw steel strips with a hardness of about 80HV, and you can purchase raw steel strips that meet the requirements;
[0040] b. Cutting and pulling: Send the steel strip into the cutting and pulling machine, first adjust the cutting and pulling depth of the cutting and drawing knife, so that the pulled mesh can not have broken wires, and the stretching amount of the mesh can be controlled to adjust the surface density of the steel mesh , so that it can meet the specified surface density requirements. The cutting and pulling process is to cut a plurality of slits horizontally on the steel strip, and the uncut part between the slits of the next row is located in the middle of the previous row of slits. After the slits are cut, the steel strip is stretched longitudinally. Belts, different cut shapes, can be drawn to form different cell shapes, generally straight line cuts can be drawn into rh...
Embodiment 2
[0043] The steps are the same as in Example 1. In order to ensure the surface quality of the steel strip after annealing, a step of cleaning the raw steel strip is added before step a. The method can use degreasing agents such as alkaline degreasing powder to carry out electrolytic degreasing.
[0044] Simultaneously, in the above-mentioned step b, between carrying out the slit on the steel strip and stretching the steel strip, it also includes adjusting the drawn out by controlling the stretching amount of the grid, the size of the mesh wire and the mesh hole. The adjustment operation of the areal density of the mesh-shaped steel strip (not shown in the process flow).
Embodiment 3
[0046] The steps are the same as in Example 2, the difference is that the following steps are added after step c:
[0047] d. Degreasing and nickel plating: Clean and degrease the rolled and flattened semi-finished net, use alkaline degreasing powder and other degreasing agents for electrolytic degreasing, and then carry out electroplating and nickel plating protection treatment to improve the anti-corrosion resistance of the steel net. Corrosion ability;
[0048] e. Slitting: Cut the steel strip after electroplating protection treatment according to the specifications required by the customer, and can use disc shears or other shearing equipment for cutting to obtain finished steel strips that meet customer requirements;
[0049] f. Packing: Then pack the slit steel strips.
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Abstract
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