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Battery slurry stability detection method and device

A detection method and stability technology, applied in the field of battery slurry stability detection, can solve the problems of more than one hour, long solid content test time, high labor cost, etc., to achieve simple operation, avoid battery slurry settlement, and shorten the test the effect of time

Active Publication Date: 2021-06-18
SVOLT ENERGY TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The current battery slurry stability test method has a long solid content test time. When testing the solid content, the battery slurry needs to be dried in an oven. The drying time often exceeds one hour, resulting in huge labor costs.

Method used

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  • Battery slurry stability detection method and device
  • Battery slurry stability detection method and device
  • Battery slurry stability detection method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] This embodiment provides a battery slurry stability detection device, such as figure 1 As shown, the device includes a container 1 for battery slurry, a detection unit 2 and a controller 3, the detection unit 2 is arranged on the inner side wall of the container 1, and the controller 3 communicates with the detection unit 2 to receive the detection unit 2 The values ​​transmitted and calculated to obtain the solid content of each test point at different time points. In this embodiment, the controller 3 can be a centralized or distributed controller. For example, the controller 3 can be a single single-chip microcomputer, or it can be composed of distributed multi-block single-chip microcomputers. The control program can be run in the single-chip microcomputers, and then The detection unit 2 is controlled to realize its function.

[0053] The detection unit 2 is a pressure sensor or a pressure sensor, which can be selected according to actual needs. The detection unit ...

Embodiment 2

[0056] Such as figure 2 As shown, this embodiment provides a battery slurry stability testing method, which is applied to the battery slurry stability testing device provided in Example 1. The method provided in this example mainly includes the following steps:

[0057] Obtain the pressure value F of at least one test point below the liquid level of the battery slurry in the battery slurry container at different time points nm or pressure value P nm , where, n is the test point label, m is the time point label;

[0058] When the test point is one, the test point is located above the liquid bottom of the battery slurry;

[0059] By pressure value F nm or pressure value P nm Calculate the density corresponding to the test point, and obtain the solid content of the test point at different time points through the relationship between density and solid content;

[0060] The stability of the battery slurry was judged based on multiple solid contents obtained at different time ...

Embodiment 4

[0131] This embodiment provides a battery slurry stability testing method, which is applied to the battery slurry stability testing device provided in Example 1. The method provided in this example mainly includes the following steps:

[0132] Obtain the pressure value F of at least one test point below the liquid level of the battery slurry in the battery slurry container at different time points nm or pressure value P nm , where, n is the test point label, m is the time point label;

[0133] When the test point is one, the test point is located above the liquid bottom of the battery slurry;

[0134] By pressure value F nm or pressure value P nm Calculate the density corresponding to the test point, and obtain the solid content of the test point at different time points through the relationship between density and solid content;

[0135] The stability of the battery slurry was judged based on multiple solid contents obtained at different time points at the same test point...

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Abstract

The invention relates to the technical field of lithium batteries, in particular to a battery slurry stability detection method and device. The method comprises the following steps: obtaining the pressure value Fnm or the pressure intensity value Pnm of at least one test point located below the liquid level of battery slurry in a container containing the battery slurry at different time points, wherein n is the mark number of the test point, and m is the mark number of the time point; when the number of the test point is one, locating the test point above the bottom of the battery slurry; calculating the density corresponding to the test point according to the pressure value Fnm or the pressure intensity value Pnm, and obtaining the solid content of the test point at different time points according to the relationship between the density and the solid content; and judging the stability of the battery slurry according to the plurality of solid contents obtained at different time points at the same test point. Compared with the prior art, the method has the advantages that the solid content can be obtained without drying the battery slurry and weighing the battery slurry for many times, the test time is shortened, the solid content of the battery slurry can be detected at any height in the container at any time according to needs, and the operation is simple.

Description

technical field [0001] The invention relates to the technical field of lithium batteries, in particular to a method and device for detecting the stability of battery slurry. Background technique [0002] Lithium battery slurry needs to have good stability, which is an important indicator to ensure battery consistency in the battery production process. With the completion of slurry mixing and the stop of stirring, the battery slurry will appear to settle, flocculate, coalesce and other phenomena, resulting in large particles, which will have a great impact on the subsequent coating and other processes. Therefore, it is very important to detect and control the stability of the battery slurry. The current commonly used method is to store the battery slurry in a glass container, then put the glass container in a drying oven to dry, and test the solid content of the battery slurry at different depths in the beaker at regular intervals after drying. [0003] The current test met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N9/36
CPCG01N9/36Y02E60/10
Inventor 王代兴侯月朋苏夏
Owner SVOLT ENERGY TECHNOLOGY CO LTD
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