Adhesive property representation method and representation device of electrode plate

A technology of bonding properties and electrode sheets, applied in the field of electrode sheets

Inactive Publication Date: 2020-01-03
深圳好电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method can determine the bonding performance of the electrode sheet to a certain extent, this method can only test the bonding strength of the surface of the electrode active layer.

Method used

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  • Adhesive property representation method and representation device of electrode plate
  • Adhesive property representation method and representation device of electrode plate
  • Adhesive property representation method and representation device of electrode plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The embodiment of the present application provides a method for characterizing the bonding performance of electrode sheets, such as figure 1 As shown, the method includes:

[0043] Step 11, sticking an adhesive tape on one side of the active layer of the electrode sheet to be tested to obtain the first electrode sheet;

[0044] Optionally, the width and length of the above-mentioned electrode sheet to be tested are all less than or equal to the above-mentioned adhesive tape, so that one side of the above-mentioned active layer can be completely covered by the above-mentioned adhesive tape, and after the above-mentioned adhesive tape is peeled off, a more accurate measurement of the stripped active layer material is obtained. quality.

[0045] Optionally, the above-mentioned adhesive tape may be a single-sided strong tape or a double-sided strong tape, which is not limited here.

[0046] Optionally, the adhesive tape can be pasted manually or by a machine, which is not...

Embodiment 2

[0103] The embodiment of the present application provides a method for characterizing the bonding performance of electrode sheets, such as figure 2 As shown, the characterization method includes:

[0104] Steps 21-24;

[0105] Among them, steps 21-24 can refer to figure 1 The description in steps 11 to 14 in the illustrated embodiment will not be repeated here.

[0106] Step 25, performing N times of sticking the tape and N times of peeling off the tape on the second electrode sheet in order to obtain the mass of N target active layer substances;

[0107] The above N is greater than or equal to 2;

[0108] Among them, the above N times of sticking the tape can refer to figure 1 For the description in step 11 in the illustrated embodiment, the above N times of stripping the adhesive tape can refer to figure 1 The description in step 13 in the illustrated embodiment will not be repeated here.

[0109] Step 26, based on the mass change between the mass of the first target ...

Embodiment 3

[0125] The embodiment of the present application provides a device for characterizing the bonding performance of electrode sheets, Figure 4 A schematic structural diagram of the characterization device provided by the embodiment of the present application is shown.

[0126] Specifically, see Figure 4 , the characterization device includes a fixation module 41 , a glue pulling module 42 and an analysis module 43 .

[0127] Wherein, the fixing module 41 is used to fix the first electrode sheet, and the above-mentioned first electrode sheet is an electrode sheet to be tested with adhesive tape pasted on one side of the active layer;

[0128] The glue pulling module 42 is used to peel off the above-mentioned adhesive tape from the above-mentioned first electrode sheet to obtain a second electrode sheet;

[0129]The analysis module 43 is used to determine the binding performance of each particle material in the active layer of the electrode sheet to be tested in the longitudina...

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PUM

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Abstract

The invention provides an adhesive property representation method and representation device of an electrode plate, and belongs to the technical field of electrode plates. The representation method comprises the steps of pasting an adhesive tape onto a surface of an active layer of a to-be-detected electrode plate to obtain a first electrode plate; fixing the first electrode plate; stripping the adhesive tape from the first electrode sheet to obtain a second electrode plate; determining adhesive property of each particle substance in the active layer of the to-be-detected electrode plate at longitudinal depth according to mass of an original active layer substance and mass of a first target active layer substance, wherein the original active layer substance is an active layer substance in the to-be-detected substrate, the first target active layer substance is an active layer substance stripped from the first electrode plate by the adhesive tape, and the adhesive property of each particle substance in the active layer at longitudinal depth is in negative correlation with the mass of the first target active layer substance under a condition of fixed mass of the original active layersubstance. With the representation method provided by the technical scheme, the adhesive property of the electrode plate can be more comprehensively analyzed.

Description

technical field [0001] The present application belongs to the technical field of electrode sheets, and in particular relates to a characterization method and a characterization device for the bonding performance of electrode sheets. Background technique [0002] The battery is mainly composed of positive and negative electrode sheets, a separator and an electrolyte. Among them, the electrode sheet is the electrochemical reaction area inside the battery, and its performance has a very important impact on the performance of the battery. The electrode sheet is composed of active material, conductive agent, binder and current collector. The binder binds the active material particles and the conductive agent particles together to form a stable system, and simultaneously binds these particles in the On the current collector, the current collector is in contact with these active material particles to collect the current generated by the active material and output a large current to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N19/04
CPCG01N19/04
Inventor 李涛张紫方曹华伟陶晶郭文登
Owner 深圳好电科技有限公司
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