Rapid identification method for quality of lead paste of lead-acid storage battery

A lead-acid battery and identification method technology, applied in the field of lead-acid batteries, can solve the problems of identifying the quality of lead paste, such as errors, time-consuming, slow response speed, etc., to achieve fast and accurate identification, reduce workload, and use less samples Effect

Inactive Publication Date: 2015-09-30
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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Problems solved by technology

[0005] 1. The impurity ions contained in the lead paste cannot be fully detected, and there are errors in identifying the quality of the lead paste;
[0006] 2. In the process of identifying the quality of lead paste, the detection method is complicated to operate, the reaction speed is slow, and it takes too much time;
[0007] 3. Impurity ions in lead paste cannot be qualitatively and quantitatively analyzed at the same time, so that the quality of lead paste cannot be accurately identified

Method used

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  • Rapid identification method for quality of lead paste of lead-acid storage battery
  • Rapid identification method for quality of lead paste of lead-acid storage battery
  • Rapid identification method for quality of lead paste of lead-acid storage battery

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Embodiment Construction

[0031] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0032] In a preferred embodiment of the present invention, a method for quickly identifying the quality of lead paste for lead-acid batteries, firstly samples are taken from the positive and negative lead pastes of lead-acid batteries, respectively, on the upper and lower plates of the positive and negative poles. Sampling at the middle and lower points and avoiding the grid plate to ensure that the obtained samples can cover various impurities contained in the lead paste; the obtained samples are vacuum-dried first, and then the samples are fixed on the scanning electron microscope. (SEM) on the sample stage for energy dispersive X-ray method (EDX) detection. When testin...

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Abstract

The invention relates to a rapid identification method for the quality of lead paste of a lead-acid storage battery. The rapid identification method comprises the following steps: step 1, detecting impurity elements and the content of lead in the lead paste by using an energy dispersive X-ray (EDX) analysis method; and step 2, detecting the content of the impurity elements in the step 1 by adopting an inductively coupled plasma (ICP) atomic emission spectrometry. The lead paste identification method provided by the invention can be used for sampling the lead paste and carrying out EDX detection to obtain the impurity elements and the lead content in the lead paste of the lead-acid storage battery; an ICP detection method is used for tracing quantitative known elements; the EDX method and the ICP method are combined to perform qualitative and quantitative analysis on the impurity elements in the lead paste, and the quality of the lead paste can be rapidly and accurately identified.

Description

technical field [0001] The invention relates to the field of lead-acid batteries, in particular to a method capable of comprehensively detecting impurity ions in lead paste. Background technique [0002] Lead paste is a paste made by mixing lead powder, water, dilute sulfuric acid and additives in a paste machine. The preparation of lead paste has always been the most important, complicated and difficult to control production process in the production of lead-acid battery plates. The lead content of the lead paste is also directly related to the battery capacity. In the process of production, impurity ions will inevitably infiltrate, and the impurity ions in the lead paste directly affect the quality of the lead-acid battery lead paste. For example, Fe ions will cause the positive and negative electrodes to self-discharge, and after entering the electrolyte, a micro-battery will be formed inside, resulting in corrosion, resulting in the loss of active materials and affectin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N23/00G01N21/73
Inventor 钟国彬郑军伟苏伟刘燕任建新陈永杰张娟任鉴民
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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