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Settlement characteristic evaluation method of battery slurry

A technology of sedimentation characteristics and slurry, applied in the direction of analyzing materials, instruments, etc., to achieve the effect of speeding up production and research and development progress, monitoring quality stability, and avoiding waste of time and cost

Inactive Publication Date: 2022-03-01
元能科技(厦门)有限公司
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for evaluating the sedimentation characteristics of battery slurry, which solves the limitations of the existing monitoring process and achieves a more comprehensive and accurate characterization of the sedimentation characteristics of battery slurry

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  • Settlement characteristic evaluation method of battery slurry

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Embodiment Construction

[0016] In order to further explain the technical solution of the present invention, the present invention will be described in detail below through specific examples.

[0017] According to the present invention, the conductivity parameter of the battery slurry has a significant correlation with factors such as the formula of the battery slurry, the type and content of the conductive agent, the type and content of the binder, and the battery slurry is left to stand for a period of time after the stirring is completed. Gel settlement may occur, and at this time, the conductivity values ​​of different layers of the battery slurry will also show varying degrees of change. Therefore, the resistivity change at different positions of the battery slurry can be monitored in real time, and the resistivity of the battery slurry can be used to characterize the sedimentation characteristics of the battery slurry more comprehensively.

[0018] The invention is a method for evaluating the se...

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Abstract

The invention discloses a method for evaluating the sedimentation characteristic of battery slurry, which is used for carrying out resistivity detection on a plurality of positions in the sedimentation direction of the battery slurry for continuous time, and evaluating the sedimentation characteristic of the battery slurry by comparing the resistivity change conditions of two dimensions of position and time. According to the method, the resistivity of a plurality of positions in the sedimentation direction of the battery slurry is measured at the same time, the sedimentation characteristics of the battery slurry can be evaluated by comparing the resistivity measured at different times, the structure of the battery slurry is not damaged, and the sedimentation characteristics of the battery slurry can be represented more comprehensively and more accurately.

Description

technical field [0001] The invention relates to the technical field of battery slurry characteristic detection, in particular to a method for evaluating the settling characteristics of battery slurry. Background technique [0002] The pole piece manufacturing process is the core content of the entire lithium battery manufacturing, which is related to the electrochemical performance of the lithium battery, and the quality of the battery slurry is particularly important. The battery slurry is formed by uniformly dispersing active materials, binders, and conductive agents in a solvent through stirring, and belongs to a typical high-viscosity solid-liquid two-phase suspension system. The battery slurry needs to have good sedimentation stability to meet the requirements of the coating process. [0003] The current method of monitoring battery slurry is to evaluate its sedimentation characteristics by measuring the viscosity of battery slurry, but the viscosity cannot accurately ...

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Application Information

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IPC IPC(8): G01N15/04
CPCG01N15/04
Inventor 向臣印魏奕民左启琪齐琼琼
Owner 元能科技(厦门)有限公司
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