CN109560326B - Heavy piece detection method for lamination process - Google Patents

Heavy piece detection method for lamination process Download PDF

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Publication number
CN109560326B
CN109560326B CN201811243602.4A CN201811243602A CN109560326B CN 109560326 B CN109560326 B CN 109560326B CN 201811243602 A CN201811243602 A CN 201811243602A CN 109560326 B CN109560326 B CN 109560326B
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weight
electronic scale
pole piece
piece
heavy
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CN109560326A (en
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朱登伟
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Hunan Lifang New Energy Science and Technology Co Ltd
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Hunan Lifang New Energy Science and Technology Co Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
    • G01G19/40—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight
    • G01G19/42—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight for counting by weighing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

The invention belongs to the technical field of lithium ion battery production, and particularly relates to a lamination process for a lithium ion batteryA sheet inspection method comprising the steps of: weighing n pole pieces, recording total weight W, and calculating weight W of each pole piece0(ii) a Calculating the weight tolerance W' = W of the single pole piece0N; placing a plurality of pole pieces in the fixture, and recording the weight W displayed by the electronic scale1(ii) a When laminating, the manipulator of the laminating machine takes the pole piece from the clamp and records the weight W displayed by the electronic scale2(ii) a The central processing unit calculates the weight difference delta W; and combining Δ W and W0Comparative calculation when W0‑W’≤△W≤W0When the chip is + W', judging that no repeated chips occur; when Δ W > W0When + W', the film is judged to be heavy, and the equipment alarms. Compared with the prior art, the method and the device can accurately and quickly detect the double film and give an alarm, and further can realize 100% separation of the double film.

Description

Heavy piece detection method for lamination process
Technical Field
The invention belongs to the technical field of lithium ion battery production, and particularly relates to a heavy piece detection method for a lamination process.
Background
The lithium ion battery has the characteristics of long service life, high specific energy density, safety and the like, and becomes the first choice in the fields of new energy automobiles and energy storage. Particularly, the soft package battery manufactured by the lamination process has the advantages of high rate, high energy density, long cycle and high safety, and becomes the heart of the current power battery.
The lamination process is that the positive and negative pole pieces are cross-stacked together layer by a lamination machine after being die-cut into pieces, and the middle is isolated by a diaphragm. The key control points of the lamination process are the lamination alignment degree and the anti-overlapping (multi-overlapping or overlapping) sheet, and particularly, the overlapping sheet of the positive plate wastes the positive main material and has potential safety hazard. The traditional anti-heavy piece method is mainly realized by increasing edge poking and blowing, namely, a soft piece or a soft brush is added at the edge of a pole piece, the pole piece is poked by a soft skin or the soft brush to deform, and the heavy pieces at two sides are separated by blowing, but when the static electricity is too large or the heavy pieces are heavy for other reasons, the method can not separate the heavy pieces by 100%; the method also has the function of increasing the weight-proof piece, namely, the pole piece is bent and shaken after the pole piece is adsorbed by the sucking disc, and the weight piece cannot be separated by 100 percent by the method.
In view of the above, it is necessary to provide a method for detecting a heavy sheet in a lamination process, which can detect 100% of the heavy sheet battery cells.
Disclosure of Invention
The invention aims to: aiming at the defects of the prior art, the method for detecting the heavy sheets in the lamination process is provided, the heavy sheets can be accurately and quickly detected and alarm can be given, the specific number of the heavy sheets can be given, and then the separation of the heavy sheets by 100 percent can be realized.
In order to achieve the purpose, the invention adopts the following technical scheme:
a heavy piece detection method for a lamination process comprises the following steps:
preparing detection equipment consisting of a clamp, an electronic scale and a central processing unit, wherein the clamp is used for placing a pole piece, the clamp is placed on the electronic scale, the electronic scale is connected with the central processing unit, and the central processing unit is used for calculating and judging;
weighing n pole pieces, recording the total weight W of the n pole pieces, and calculating the weight W of each pole piece0，W0＝W/n；
Step three, calculating the weight tolerance W' ═ W of the single pole piece0/n；
Step four, putting a plurality of pole pieces into the fixture, and recording the weight W displayed by the electronic scale1；
Step five, during lamination, a manipulator of the lamination machine takes the pole piece out of the clamp and records the weight W displayed by the electronic scale2；
Step six, the central processing unit calculates the weight difference delta W, which is equal to W1-W2；
Step seven, combining delta W and W0Comparative calculation when W0-W’≤△W≤W0When the chip is + W', judging that no repeated chips occur; when Δ W > W0When + W', the film is judged to be heavy, and the equipment alarms.
The improvement of the heavy piece detection method for the lamination process further comprises a step eight, when the heavy piece is judged in the step seven, according to the delta W/W0And taking an integer to calculate the number of the heavy chips.
In the second step and the third step, n is any integer from 3 to 50. It should be noted that, when the number of pole pieces is too small, the calculated data deviation is large, and when the number of pole pieces is more, the calculated data is more accurate, but the number of pole pieces is not too large, which increases the operation difficulty.
In the second step and the third step, n is 20.
Compared with the prior art, the method and the device can accurately and quickly detect the heavy chips and give an alarm, and can give out the specific number of the heavy chips, so that the separation of the heavy chips can be realized by 100%.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments, but the embodiments of the present invention are not limited thereto.
Example 1
A heavy piece detection method for a lamination process comprises the following steps:
preparing detection equipment consisting of a clamp, an electronic scale and a central processing unit, wherein the clamp is used for placing a pole piece, the clamp is placed on the electronic scale, the electronic scale is connected with the central processing unit, and the central processing unit is used for calculating and judging;
weighing 20 pole pieces, recording the total weight W of the pole pieces, and calculating the weight W of each pole piece0，W0＝W/20；
Step three, calculating the weight tolerance W' ═ W of the single pole piece0/20；
Step four, putting a plurality of pole pieces into the fixture, and recording the weight W displayed by the electronic scale1；
Step five, during lamination, a manipulator of the lamination machine takes the pole piece out of the clamp and records the weight W displayed by the electronic scale2；
Step six, the central processing unit calculates the weight difference delta W, which is equal to W1-W2；
Step seven, combining delta W and W0Comparative calculation, W0-W’≤△W≤W0+ W', it is determined that no duplication occurred.
Example 2
A heavy piece detection method for a lamination process comprises the following steps:
preparing detection equipment consisting of a clamp, an electronic scale and a central processing unit, wherein the clamp is used for placing a pole piece, the clamp is placed on the electronic scale, the electronic scale is connected with the central processing unit, and the central processing unit is used for calculating and judging;
weighing 50 pole pieces, recording the total weight W of the pole pieces, and calculating the weight W of each pole piece0，W0＝W/50；
Step three, calculating the weight tolerance W' ═ W of the single pole piece0/50；
Step four, putting a plurality of pole pieces into the fixture, and recording the weight W displayed by the electronic scale1；
Step five, during lamination, a manipulator of the lamination machine takes the pole piece out of the clamp and records the weight W displayed by the electronic scale2；
Step six, the central processing unit calculates the weight difference delta W, which is equal to W1-W2；
Step seven, combining delta W and W0Comparative calculation of DeltaW > W0+ W', judging the film is heavy, and giving an alarm by the equipment;
step eight, according to the delta W/W0And taking an integer to calculate the number of the heavy chips.
Variations and modifications to the above-described embodiments may also occur to those skilled in the art, which fall within the scope of the invention as disclosed and taught herein. Therefore, the present invention is not limited to the above-mentioned embodiments, and any obvious improvement, replacement or modification made by those skilled in the art based on the present invention is within the protection scope of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims (3)

1. A heavy piece detection method for a lamination process is characterized by comprising the following steps:
preparing detection equipment consisting of a clamp, an electronic scale and a central processing unit, wherein the clamp is used for placing a pole piece, the clamp is placed on the electronic scale, the electronic scale is connected with the central processing unit, and the central processing unit is used for calculating and judging;
weighing n pole pieces, recording the total weight W of the n pole pieces, and calculating the weight W of each pole piece0，W0＝W/n；
Step three, calculating the weight tolerance W' ═ W of the single pole piece0/n；
Step four, putting a plurality of pole pieces into the fixture, and recording the weight W displayed by the electronic scale1；
Step five, during lamination, a manipulator of the lamination machine takes the pole piece out of the clamp and records the weight W displayed by the electronic scale2；
Step six, the central processing unit calculates the weight difference delta W, which is equal to W1-W2；
Step seven, combining delta W and W0Comparative calculation when W0-W’≤△W≤W0When the chip is + W', judging that no repeated chips occur; when Δ W > W0When the current is + W', the current is judged to be a double film, and the equipment alarms;
in the second step and the third step, n is any integer of 3-50.
2. The method for detecting the overlapped sheet for the lamination process according to claim 1, wherein: step eight, when the piece is judged to be the double piece in step seven, according to the delta W/W0And taking an integer to calculate the number of the heavy chips.
3. The method for detecting the overlapped sheet for the lamination process according to claim 1, wherein: in step two and step three, n is 20.
CN201811243602.4A 2018-10-24 2018-10-24 Heavy piece detection method for lamination process Active CN109560326B (en)

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Application Number Priority Date Filing Date Title
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CN114152882B (en) * 2021-10-29 2024-04-09 上海空间电源研究所 Method for avoiding mass production quality problems of lithium ion batteries

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JP2001256826A (en) * 2000-03-09 2001-09-21 Hitachi Chem Co Ltd Polyelectrolytic element, polyelectrolytic element roll manufacturing method, and method of manufacturing polyelectrolytic element roll and battery
JP2006196428A (en) * 2004-05-31 2006-07-27 Nissan Motor Co Ltd Battery pack and its manufacturing method
WO2010081150A1 (en) * 2009-01-12 2010-07-15 A123 Systems, Inc. Laminated battery cell and methods for creating the same
CN102683753B (en) * 2012-05-25 2015-05-13 深圳市赢合科技股份有限公司 Laminated battery pole piece input device and piece lamination prevention material taking mechanism
CN204947017U (en) * 2015-07-31 2016-01-06 河北中智电池制造有限公司 A kind of checkout gear of battery lamination machine lamination mistake
CN207645340U (en) * 2017-12-22 2018-07-24 东莞市超鸿自动化设备有限公司 Fang Chongpian testing agencies and anti-heavy transmitting device with the mechanism

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Denomination of invention: A Method for Duplex Detection in Lamination Process

Effective date of registration: 20230829

Granted publication date: 20210720

Pledgee: Agricultural Bank of China Limited Zhuzhou branch

Pledgor: HUNAN LIFANG NEW ENERGY SCIENCE & TECHNOLOGY Co.,Ltd.

Registration number: Y2023980054119