CN107290228B - Lithium ion battery pole piece flexibility testing device - Google Patents

Lithium ion battery pole piece flexibility testing device Download PDF

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Publication number
CN107290228B
CN107290228B CN201710451051.XA CN201710451051A CN107290228B CN 107290228 B CN107290228 B CN 107290228B CN 201710451051 A CN201710451051 A CN 201710451051A CN 107290228 B CN107290228 B CN 107290228B
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CN
China
Prior art keywords
pole piece
pressing wheel
flexibility
lithium ion
battery pole
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Application number
CN201710451051.XA
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Chinese (zh)
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CN107290228A (en
Inventor
周翠英
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Lishen Qingdao New Energy Co Ltd
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Lishen Qingdao New Energy Co Ltd
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Priority to CN201710451051.XA priority Critical patent/CN107290228B/en
Publication of CN107290228A publication Critical patent/CN107290228A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/20Investigating strength properties of solid materials by application of mechanical stress by applying steady bending forces
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0014Type of force applied
    • G01N2203/0023Bending
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/003Generation of the force
    • G01N2203/0032Generation of the force using mechanical means
    • G01N2203/0037Generation of the force using mechanical means involving a rotating movement, e.g. gearing, cam, eccentric, or centrifuge effects
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0058Kind of property studied
    • G01N2203/006Crack, flaws, fracture or rupture
    • G01N2203/0067Fracture or rupture
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02Details not specific for a particular testing method
    • G01N2203/026Specifications of the specimen
    • G01N2203/0262Shape of the specimen
    • G01N2203/0278Thin specimens
    • G01N2203/0282Two dimensional, e.g. tapes, webs, sheets, strips, disks or membranes
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Primary Cells (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Secondary Cells (AREA)

Abstract

The application discloses a lithium ion battery pole piece flexibility testing device which comprises a frame body, wherein a working table surface is arranged at the lower end of the frame body, a graduated scale is arranged on the front end surface of the working table surface, a pole piece pressing block, a pressing wheel, a linear guide rail and a marking piece are arranged above the working table surface, the pressing wheel and the marking piece are in sliding connection with the linear guide rail, an indication mark is designed at a concentric position below the pressing wheel, a lead screw is arranged above the linear guide rail, the pressing wheel is connected with the lead screw, and one end of the lead screw is fixedly connected with a shaking handle. The beneficial effects of the application are as follows: 1) The flexibility value of the measured pole piece can be accurately measured. 2) The pole piece is convenient to fix, the magnetic pressing block is used for fixing, and screw thread rotation fixing is not needed. 3) The device is simple and has low cost.

Description

Lithium ion battery pole piece flexibility testing device
Technical Field
The application relates to the technical field of lithium ion battery manufacturing, in particular to a testing device for testing the flexibility of a lithium ion battery pole piece, which belongs to the field of lithium ion battery pole piece manufacturing and battery core winding production and is used for judging whether the flexibility of the pole piece meets design requirements.
Background
At present, the production of the lithium ion battery pole piece and the winding of the battery core all enter an automatic production process, and full-automatic production equipment brings higher requirements on the flexibility of the pole piece. The battery manufacturing industry at home and abroad has no good measuring method and instrument for the electrode flexibility, and the method and instrument are characterized in that the electrode flexibility is not detected and controlled effectively in the production process, so that a great amount of bad phenomena occur when the electrode material with poor flexibility is put into winding production, and the bad phenomena can not be controlled in time in the production process, and the qualification rate and the product quality of the product are directly influenced. The main problems are: 1) When the pole piece with poor flexibility is transferred into a winding process for production, edges and corners even fracture occur after winding, so that a large number of defective products or waste products are formed. 2) The electrode is produced without an instrument for detecting the flexibility of the electrode plate, so that the defect of the previous procedure directly flows into the production follow-up procedure. The root cause of the above problems is: there is no test instrument or equipment for pole piece flexibility. There is therefore a great need for a pole piece flexibility measuring device that can be used to solve the above problems.
Disclosure of Invention
The application aims to overcome the defects of the technology and provide a lithium ion battery pole piece flexibility testing device, which fills the blank of the technology and improves the product quality and the production benefit.
The application adopts the following technical scheme to realize the aim: the utility model provides a lithium ion battery pole piece pliability testing arrangement, includes the support body, the lower extreme of support body is provided with table surface, be provided with the scale on table surface's the preceding terminal surface, pole piece briquetting, pinch roller, linear guide, sign piece are installed to table surface top, pinch roller, sign piece and linear guide sliding connection, the concentric position department design indicator in pinch roller below, the lead screw is installed to linear guide's top, pinch roller and screwed connection, the one end of lead screw with shake the handle and be connected fixedly.
The beneficial effects of the application are as follows: 1) The flexibility value of the measured pole piece can be accurately measured. 2) The pole piece is convenient to fix, the magnetic pressing block is used for fixing, and screw thread rotation fixing is not needed. 3) The device is simple and has low cost.
Drawings
FIG. 1 is a front view of the present application;
FIG. 2 is a top view of the present application;
FIG. 3 is a left side view of the present application;
fig. 4 is a perspective view of the present application.
Detailed Description
The application is described in further detail below with reference to the drawings and the specific examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
It should be noted that the terms "coupled" and "connected," as used herein, are used throughout the description to refer to either directly or through a connection between one element and another element.
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other.
As shown in fig. 1-4, the application provides a flexibility testing device for a lithium ion battery pole piece, which comprises a frame body, wherein the lower end of the frame body is provided with a workbench surface 1, the front end surface of the workbench surface 1 is provided with a graduated scale 8, a pole piece pressing block 2, a pressing wheel 3, a linear guide 5 and a marking piece 4 are arranged above the workbench surface 1, the pressing wheel 3 and the marking piece 4 are in sliding connection with the linear guide 5, an indicator is designed at a concentric position below the pressing wheel 3, a lead screw 6 is arranged above the linear guide, the pressing wheel 3 is connected with the lead screw 6, and one end of the lead screw 6 is fixedly connected with a shaking handle 7.
When the flexibility of the pole piece is tested, the pole piece pressing block 2 is taken up, the pole piece pressing wheel 3 is lifted, the pole piece to be tested is folded in half and then placed on a test table surface, the pole piece pressing block 2 is used for fixing the position of the pole piece, the pole piece pressing wheel 3 is put down, the shaking handle 7 is shaken, the pole piece pressing wheel 3 is enabled to slowly move forwards through the connecting screw rod 6, and shaking of the shaking handle 7 is stopped when the folded position of the pole piece is broken. And reading and recording the numerical value X3 of the graduated scale 8 corresponding to the indication mark of the pole piece pinch roller 3, moving the identification piece 4 to the pole piece folding fracture position, reading and recording the numerical value X4 of the graduated scale 8 corresponding to the identification piece 4, and measuring the pole piece flexibility test result X=X4-X3. And (5) finishing the flexibility test of the pole piece.
Wherein, the minimum scale of the graduated scale is 1mm, and the measuring range is 0mm-200mm.
The magnet is arranged at the bottom of the pole piece pressing block, and the position of the pole piece to be tested on the table top can be fixed.
The application has simple structure and simple pole piece fixing operation, can accurately measure the flexibility value of the measured pole piece to form metering data, fills up the gap of pole piece flexibility evaluation in the process of winding the lithium ion battery core and manufacturing the pole piece, and effectively reduces the defective rate in the production process.
The foregoing is merely a preferred embodiment of the present application and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present application, which are intended to be comprehended within the scope of the present application.

Claims (3)

1. A method for completing pole piece flexibility test by using a lithium ion battery pole piece flexibility test device is characterized in that: the lithium ion battery pole piece flexibility testing device comprises a frame body, a working table surface is arranged at the lower end of the frame body, a graduated scale is arranged on the front end surface of the working table surface, a pole piece pressing block, a pressing wheel, a linear guide rail and a marking piece are arranged above the working table surface, the pressing wheel and the marking piece are in sliding connection with the linear guide rail, an indicator is designed at the concentric position below the pressing wheel, a screw is arranged above the linear guide rail, the pressing wheel is connected with the screw, and one end of the screw is fixedly connected with a shaking handle;
when the flexibility of the battery pole piece is tested, the pole piece pressing block is taken up, the pressing wheel is lifted, the battery pole piece to be tested is folded in half and then placed on the test table surface, the pole piece pressing block is used for fixing the position of the pole piece, the pressing wheel is put down, the shaking handle is shaken, the pressing wheel presses the battery pole piece to be tested to slowly move forwards through the screw rod, and when the folded position of the battery pole piece is broken, the shaking handle is stopped.
2. The method for performing pole piece flexibility testing by using the lithium ion battery pole piece flexibility testing device according to claim 1, wherein the method comprises the following steps: the minimum scale of the graduated scale is 1mm, and the measuring range is 0mm-200mm.
3. The method for performing pole piece flexibility testing by using the lithium ion battery pole piece flexibility testing device according to claim 1, wherein the method comprises the following steps: the magnet is arranged at the bottom of the pole piece pressing block, so that the position of the pole piece to be tested on the table top can be fixed.
CN201710451051.XA 2017-06-15 2017-06-15 Lithium ion battery pole piece flexibility testing device Active CN107290228B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710451051.XA CN107290228B (en) 2017-06-15 2017-06-15 Lithium ion battery pole piece flexibility testing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710451051.XA CN107290228B (en) 2017-06-15 2017-06-15 Lithium ion battery pole piece flexibility testing device

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CN107290228A CN107290228A (en) 2017-10-24
CN107290228B true CN107290228B (en) 2023-08-25

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109894389A (en) * 2017-12-10 2019-06-18 深圳格林德能源集团有限公司 A kind of nickle cobalt lithium manganate positive plate flexibility detection method
CN108195677A (en) * 2018-02-01 2018-06-22 中航锂电(洛阳)有限公司 A kind of battery pole piece flexibility detection method

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000070179A1 (en) * 1999-05-13 2000-11-23 Matsushita Electric Industrial Co., Ltd. Pressure-sensitive sensor, object detecting device, and opening-closing device
JP2007302438A (en) * 2006-05-12 2007-11-22 Nippon Daishowa Paperboard Co Ltd Marker tape for stacked paper
CN202002841U (en) * 2010-12-28 2011-10-05 广东国光电子有限公司 Brittleness testing device for lithium battery pole piece
CN102620993A (en) * 2012-04-16 2012-08-01 宁德新能源科技有限公司 Battery pole piece flexibility characterization method and flexibility testing device
CN106405422A (en) * 2015-07-27 2017-02-15 宁德新能源科技有限公司 Lithium ion battery pole piece expanding fracture test method
CN106680109A (en) * 2017-02-26 2017-05-17 合肥国轩高科动力能源有限公司 Detection device and detection method for flexibility of electrode plate coating of lithium ion battery
CN207020007U (en) * 2017-06-15 2018-02-16 力神动力电池系统有限公司 A kind of electrodes of lithium-ion batteries pliability test fixture

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000070179A1 (en) * 1999-05-13 2000-11-23 Matsushita Electric Industrial Co., Ltd. Pressure-sensitive sensor, object detecting device, and opening-closing device
JP2007302438A (en) * 2006-05-12 2007-11-22 Nippon Daishowa Paperboard Co Ltd Marker tape for stacked paper
CN202002841U (en) * 2010-12-28 2011-10-05 广东国光电子有限公司 Brittleness testing device for lithium battery pole piece
CN102620993A (en) * 2012-04-16 2012-08-01 宁德新能源科技有限公司 Battery pole piece flexibility characterization method and flexibility testing device
CN106405422A (en) * 2015-07-27 2017-02-15 宁德新能源科技有限公司 Lithium ion battery pole piece expanding fracture test method
CN106680109A (en) * 2017-02-26 2017-05-17 合肥国轩高科动力能源有限公司 Detection device and detection method for flexibility of electrode plate coating of lithium ion battery
CN207020007U (en) * 2017-06-15 2018-02-16 力神动力电池系统有限公司 A kind of electrodes of lithium-ion batteries pliability test fixture

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Address after: 266500 Minshan Road, Huangdao District, Qingdao, Shandong

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Address before: 300384 No. 38, Haitai South Road, Huayuan Science Park (outside the ring), Tianjin Binhai New Area, Tianjin Binhai high tech Industrial Development Zone

Applicant before: LISHEN POWER BATTERY SYSTEMS Co.,Ltd.

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