CN103969509A - Method for measuring internal resistance of electrode materials - Google Patents
Method for measuring internal resistance of electrode materials Download PDFInfo
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- CN103969509A CN103969509A CN201310028574.5A CN201310028574A CN103969509A CN 103969509 A CN103969509 A CN 103969509A CN 201310028574 A CN201310028574 A CN 201310028574A CN 103969509 A CN103969509 A CN 103969509A
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- internal resistance
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Abstract
The invention relates to a method for measuring the internal resistance of electrode materials. The method is characterized by including the following steps: (1) preparing the electrode materials and auxiliary materials to be measured, (2) placing the electrode materials and the auxiliary materials into a stirrer to be stirred to form slurry, (3) taking out the slurry to place the slurry into an oven to be dried, and manufacturing powder, (4) dividing the powder into a plurality of parts equal in amount, and pressing the powder into sheet materials on a tablet machine, (5) evenly coating the two sides of the sheet materials with silver powder, (6) placing the sheet materials coated with the silver powder into the oven, and drying organic solvents in the silver powder, (7) welding copper wires on the two sides of the dried sheet materials, (8) directly reading resistance values of the sheet materials through the copper wires with a resistance tester, and (9) calculating an average value, namely the internal resistance value of the electrode materials. The invention provides the method capable of effectively measuring the internal resistance of the electrode materials, so that the condition of the internal resistance of a battery can be forecasted before battery packaging is completed, or judgment can be made for the condition of the internal resistance of raw materials.
Description
Technical field
The present invention relates to a kind of electrode material internal resistance method of testing.
Background technology
The internal resistance of battery is one of of paramount importance characterisitic parameter of battery, and it is the important parameter of characterizing battery life-span and battery operation state, is the outstanding feature that measurement electronics and ion transmit complexity in electrode.The accurate detection internal resistance of cell particularly ohmic internal resistance is also the objective requirement of battery management and practical application.
Present stage only tests the monitoring of the internal resistance of cell after cell package completes, and for causing batch bad situation of the property internal resistance of cell because electrode material is abnormal, now battery has completed the assembling process of product, and loss has caused, and cannot retrieve.Find after deliberation, after project organization sizing, the size of core component electrode material self internal resistance is depended in the internal resistance of battery to a great extent, by the internal resistance of monitoring electrode material self, judge starting material quality, the situation that can predict the internal resistance of cell after putting into production, notes abnormalities early, reduces the loss.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of method that can the internal resistance of Validity Test electrode material, so that can before cell package completes, predict the situation of the internal resistance of cell, or raw-material internal resistance situation is done to a judge.
The technical solution adopted for the present invention to solve the technical problems is: a kind of electrode material internal resistance method of testing, comprises the steps: electrode material and auxiliary material that a, preparation will be tested; B, electrode material and auxiliary material are put into stirring machine stir into slurry; C, take out slurry and put into baking oven and dry, make powder; D, some part that powder is divided into equivalent are pressed into respectively flaky material in sheeter; E, be evenly coated with and spread silver powder in each flaky material both sides; F, the flaky material of respectively smearing silver powder is put into baking oven, dry the organic solvent in silver powder; G, each flaky material both sides after the oven dry copper conductor of respectively burn-oning; H, the resistance value of directly reading each flaky material with resistance tester by described copper conductor; I, calculating mean value are electrode material internal resistance value.
In described steps d, need use same sheeter when pressed powder moulding, powder weight, forming pressure, time need consistent.
It is corresponding that the silver powder of described each flaky material both sides is smeared position, and need smear with same mould.
The length of described all wires is consistent.
Described flaky material is coin shapes.
Described resistance tester is universal meter.
Beneficial effect: the invention solves the defect existing in background technology, can before cell package completes, measure electrode material internal resistance and have or not extremely, thereby prediction cell package complete after the situation of the internal resistance of cell, note abnormalities early, reduce the loss.Also can be used as electrode starting material detection method, whether unanimously detect starting material batch property simultaneously.
Embodiment
A kind of electrode material internal resistance method of testing, comprises the steps: electrode material and auxiliary material that a, preparation will be tested; B, electrode material and auxiliary material are put into stirring machine stir into slurry; C, take out slurry and put into baking oven and dry, make powder; D, some part that powder is divided into equivalent are pressed into respectively coin-shaped flaky material in sheeter; E, be evenly coated with and spread silver powder in each flaky material both sides; F, the flaky material of respectively smearing silver powder is put into baking oven, dry the organic solvent in silver powder; G, each flaky material both sides after the oven dry copper conductor of respectively burn-oning; H, the resistance value of directly reading each flaky material with universal meter by described copper conductor; The mean value of i, all effective resistance values of calculating gained, is electrode material internal resistance value.
In order to ensure the accuracy of test, in steps d, need use same sheeter when pressed powder moulding, powder weight, forming pressure, time need unanimously.The silver powder of each flaky material both sides is smeared position need be corresponding, and need smear with same mould.The length of all wires needs consistent.
Should be appreciated that specific embodiment described above, only for explaining the present invention, is not intended to limit the present invention.The apparent variation of being extended out by spirit of the present invention or variation are still among protection scope of the present invention.
Claims (6)
1. an electrode material internal resistance method of testing, is characterized in that the electrode material and the auxiliary material that comprise the steps: that a, preparation will be tested; B, electrode material and auxiliary material are put into stirring machine stir into slurry; C, take out slurry and put into baking oven and dry, make powder; D, some part that powder is divided into equivalent are pressed into respectively flaky material in sheeter; E, be evenly coated with and spread silver powder in each flaky material both sides; F, the flaky material of respectively smearing silver powder is put into baking oven, dry the organic solvent in silver powder; G, each flaky material both sides after the oven dry copper conductor of respectively burn-oning; H, the resistance value of directly reading each flaky material with resistance tester by described copper conductor; I, calculating mean value are electrode material internal resistance value.
2. electrode material internal resistance method of testing according to claim 1, is characterized in that: in described steps d, need use same sheeter when pressed powder moulding, powder weight, forming pressure, time need consistent.
3. electrode material internal resistance method of testing according to claim 2, is characterized in that: it is corresponding that the silver powder of described each flaky material both sides is smeared position, and need smear with same mould.
4. electrode material internal resistance method of testing according to claim 3, is characterized in that: the length of described all wires is consistent.
5. electrode material internal resistance method of testing according to claim 1, is characterized in that: described flaky material is coin shapes.
6. electrode material internal resistance method of testing according to claim 1, is characterized in that: described resistance tester is universal meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310028574.5A CN103969509A (en) | 2013-01-25 | 2013-01-25 | Method for measuring internal resistance of electrode materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310028574.5A CN103969509A (en) | 2013-01-25 | 2013-01-25 | Method for measuring internal resistance of electrode materials |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103969509A true CN103969509A (en) | 2014-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310028574.5A Pending CN103969509A (en) | 2013-01-25 | 2013-01-25 | Method for measuring internal resistance of electrode materials |
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| CN (1) | CN103969509A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110187288A (en) * | 2019-05-05 | 2019-08-30 | 超威电源有限公司 | The device and method for testing lead plaster mixing uniformity in lead-acid accumulator |
Citations (7)
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| CN102645587A (en) * | 2012-04-27 | 2012-08-22 | 中航锂电（洛阳）有限公司 | Method and device for electric conductivity test of lithium ion battery pole piece |
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2013
- 2013-01-25 CN CN201310028574.5A patent/CN103969509A/en active Pending
Patent Citations (7)
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| JP2002267704A (en) * | 2001-03-14 | 2002-09-18 | Hioki Ee Corp | Method and instrument for measuring internal resistance of layer built cell |
| CN1737584A (en) * | 2005-09-08 | 2006-02-22 | 天津力神电池股份有限公司 | Method for testing resistance of battery positive/negative plate and apparatus thereof |
| CN101859885A (en) * | 2009-04-09 | 2010-10-13 | 上海比亚迪有限公司 | Battery pole piece, preparation method thereof and secondary battery comprising the same |
| CN201903588U (en) * | 2010-12-13 | 2011-07-20 | 天津力神电池股份有限公司 | Internal resistance tester for electrode material |
| CN102064320A (en) * | 2010-12-24 | 2011-05-18 | 深圳市量能科技有限公司 | Secondary battery, pole piece and manufacturing method thereof |
| CN102157721A (en) * | 2011-03-22 | 2011-08-17 | 广东工业大学 | Method for manufacturing simulated battery pole piece used for laboratory |
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Non-Patent Citations (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110187288A (en) * | 2019-05-05 | 2019-08-30 | 超威电源有限公司 | The device and method for testing lead plaster mixing uniformity in lead-acid accumulator |
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Effective date of registration: 20160511 Address after: 213000 Jiangsu province Changzhou City Tianning District bamboo village 177 C unit Room 201 Applicant after: Chen Henglong Address before: 213000 Changzhou, Wujin, No. 86 West Avenue Road, Jiangsu Industrial Park Applicant before: Jiangsu E Motors Co., Ltd. |
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Effective date of registration: 20160721 Address after: 213000 Changzhou, Wujin, No. 86 West Avenue Road, Jiangsu Industrial Park Applicant after: Jiangsu E Motors Co., Ltd. Address before: 213000 Jiangsu province Changzhou City Tianning District bamboo village 177 C unit Room 201 Applicant before: Chen Henglong |
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Application publication date: 20140806 |