Method for testing resistance of battery positive/negative plate and apparatus thereof

A positive and negative plate, resistance testing technology, applied in the direction of measuring devices, measuring resistance/reactance/impedance, measuring electricity, etc., can solve the problems of wasting resources, consuming energy, etc., achieve convenient operation, improve overall performance, and test work efficiency high effect

Inactive Publication Date: 2006-02-22
TIANJIN LISHEN BATTERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, usually to evaluate whether the material selection and design of the pole piece is reasonable is to actually apply several designs to the battery, and verify the performance of the battery by testing the performance of the battery. a waste of resource

Method used

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  • Method for testing resistance of battery positive/negative plate and apparatus thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Refer to attached figure 1

[0025] Battery positive and negative sheet resistance testing device, with circular insulating lower seat and upper seat 2, the middle part of the insulating lower seat and the upper seat 2 is installed with a copper conductor 4 contacting the pole piece 3, the insulating upper seat and the lower seat are aligned, and three are symmetrical with a triangle Bolt 1 tightly fixes the upper seat and the lower seat of the clamp.

Embodiment 2

[0027] Refer to attached figure 1

[0028] The method of testing the resistance of the positive and negative electrodes of the battery. When using a resistance meter to test the internal resistance, hold the lower seat of the test fixture flat with your hand, so that the lower seat of the test fixture and the copper conductor protrude, and place the test pole piece on the copper conductor. In the pole piece 3 placement area of ​​the jig shown, gently cover the upper seat of the test mold on the lower seat with the test pole piece, pay attention to the alignment of the upper and lower seats 2 and align the screw holes of the two seats, and tighten the screws 1 Make the upper and lower seats of the fixture tightly fixed, so that the pole piece is in close contact with the copper guide body 4 of the fixture, and the pole lead out of the guide body is connected with the internal resistance meter, and the resistance value of the pole piece can be directly read.

Embodiment 3

[0030] Electrode Density (g / cm 3 )

[0031] It can be seen that as the electrode rolling density increases, the resistance per unit area of ​​the two electrodes decreases gradually, and when a certain density is reached, the decrease in resistance tends to be gentle. Therefore, the parallelism of the resistance value tested by the method of the utility model is very good.

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Abstract

This invention relates to one battery positive and negative electrode slices resistance testing method and its device in battery technique field, which comprises the following steps: adopting resistance for inner testing and adopting clamper to fix battery slices and making the battery slices and clamper conductor to induce electrode column and inner resistance to directly read out positive and negative electrode slices. The battery positive and negative electrode slices resistance testing device has insulated bottom socket and upper socket loaded with conducive flow, wherein, the upper and down socket are fixed by clamper.

Description

technical field [0001] The invention belongs to the technical field of batteries, and in particular relates to a method and a device for testing the resistance of positive and negative electrodes of a battery. Background technique [0002] The internal resistance of the battery includes the ohmic resistance and the polarization resistance of the electrode during the electrochemical reaction. The ohmic resistance is composed of the pole piece, electrolyte, diaphragm resistance and contact resistance of various parts. Resistance occupies a large proportion. The large internal resistance of the battery has adverse effects such as low discharge platform and poor rate performance. Therefore, when selecting the electrode material and electrode design, the resistance of the pole piece should be as low as possible. [0003] The preparation of battery pole pieces is the first important link in the entire battery manufacturing process, in which the formula of electrodes and the sele...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R27/02G01R31/36
Inventor 高俊奎王荣秦兴才
Owner TIANJIN LISHEN BATTERY
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