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Pole piece quality information acquisition method, system and equipment

A technology of quality information and acquisition method, applied in the field of pole piece quality information acquisition, which can solve the inaccurate correspondence between cell capacity and coating weight, the inability to correspond to the status of each small roll, and the inability to evaluate the coating quality of a single small roll And other issues

Active Publication Date: 2021-04-02
东莞维科电池有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the existing weighing instruments only measure and analyze the entire width of the pole piece, which cannot correspond to the condition of each small roll after slitting, that is, it is impossible to evaluate the coating quality of a single small roll
Since the coating weight of the pole piece is positively correlated with the cell capacity, and there may be differences in the weight of the small rolls, the lack of data on the coating weight of the small rolls will make the corresponding relationship between the cell capacity and the coating weight inaccurate, resulting in The information traceability is also inaccurate

Method used

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  • Pole piece quality information acquisition method, system and equipment
  • Pole piece quality information acquisition method, system and equipment
  • Pole piece quality information acquisition method, system and equipment

Examples

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Embodiment 1

[0038] Such as figure 1 As shown, it is a schematic flow chart of a method for obtaining pole piece quality information provided by an embodiment of the present invention, which consists of figure 1 It can be seen that the method for obtaining pole piece quality information includes the following steps:

[0039] Step S102: Obtain the cutting parameters and scanning parameters of the target pole piece, the cutting parameters include trim width and cutting width, and the scanning parameters include scanning width and scanning speed.

[0040] Here, the target pole piece will be cut into multiple small rolls according to the slitting parameters in the post-production process of the winding core. The width of the small roll is the slitting width. Outside the area is the side material. During the small roll production process, the side material part is cut out from the pole piece according to the width of the side material.

[0041] Scan the target pole piece according to the scan...

Embodiment 2

[0059] exist figure 1 On the basis of the pole piece quality information acquisition method shown, this embodiment provides another pole piece quality information acquisition method, such as Figure 4 As shown, the steps of the method include:

[0060] Step S402: Calculate the quality assessment parameters corresponding to the pole piece zone according to the quality data of the pole piece zone, and the quality assessment parameters include at least one of Mean, coefficient of variation Cov, process capability index Cp, and process comprehensive capability coefficient Cpk.

[0061] After obtaining the quality data corresponding to each pole piece partition, the quality evaluation parameters of each pole piece partition can be calculated according to the quality data, wherein the quality assessment parameters include mean (Mean), coefficient of variation (coefficient ofvariation, Cov), At least one of process capability index (Process Capability, Cp) and process comprehensive ...

Embodiment 3

[0068] In order to improve the utilization rate of the coating information of a single pole piece partition and facilitate the traceability of cell information, in Figure 4 On the basis of the pole piece quality information acquisition method shown, the embodiment of the present invention also provides another pole piece quality information acquisition method. Among them, the method includes:

[0069]Step 30, acquiring the cutting parameters and scanning parameters of the target pole piece, the cutting parameters include the trim width and the cutting width, the scanning parameters include the scanning width and the scanning speed.

[0070] Step 31 , divide the target pole piece according to the cutting parameters to obtain multiple pole piece partitions, and the width of the pole piece partitions is the same as the cutting width.

[0071] Step 32, generating codes for each pole piece partition, the codes are in one-to-one correspondence with the pole piece partitions. Here...

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Abstract

The invention provides a method, system and equipment for acquiring pole piece quality information, and relates to the technical field of batteries. The method includes the following steps that slitting parameters and scanning parameters of a targeted pole piece are obtained, and the slitting parameters comprise an off-cut width and a slitting width and the scanning parameters include a scanning width and a scanning speed; the targeted pole piece is cut according to the slitting parameters to obtain a plurality of pole piece partions, and the width of the pole piece partions are the same as the slitting width; scanning duration of each pole piece partion is computed according to the slitting parameters and the scanning parameters; when the scanned data of the targeted pole piece are received, the scanned data in a scanning duration are identified as quality data correspond to the pole piece partions; and the scanned data includes pole piece thickness data or pole piece weight data. Theembodiment of the invention provides a method for acquiring pole piece quality information, quality information of each elementary volume after the pole piece is cut is acquired, the coating qualityassessment for one elementary volume is realized, and the accuracy of tracing the information of products is improved.

Description

technical field [0001] The present invention relates to the technical field of batteries, in particular to a method, system and equipment for acquiring pole piece quality information. Background technique [0002] In the production process of lithium-ion batteries, the coating area density of the pole piece is a key part of process control, and the consistency of the surface density of the pole piece greatly affects the performance of the battery. Usually, X-ray (X-ray) or β-ray (β-ray) and other on-line weighing instruments are used to monitor the coated pole pieces online, and an alarm is issued in time when the surface density deviates from the specification. [0003] At present, the existing weighing instruments only perform weighing analysis on the entire width of the pole piece, which cannot correspond to the condition of each small roll after slitting, that is, it is impossible to evaluate the coating quality of a single small roll. Since the coating weight of the po...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B15/02G01G9/00
CPCG01B15/02G01G9/005
Inventor 易万超聂灿袁成龙周华利朱坤庆计阳楚英张涛
Owner 东莞维科电池有限公司
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