CN101581766A - Method for detecting invalid detecting point of cell detecting cabinet - Google Patents
Method for detecting invalid detecting point of cell detecting cabinet Download PDFInfo
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- CN101581766A CN101581766A CNA2008100672840A CN200810067284A CN101581766A CN 101581766 A CN101581766 A CN 101581766A CN A2008100672840 A CNA2008100672840 A CN A2008100672840A CN 200810067284 A CN200810067284 A CN 200810067284A CN 101581766 A CN101581766 A CN 101581766A
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- voltage
- detecting
- cell
- check point
- electric core
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- 238000000034 method Methods 0.000 title abstract description 20
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 19
- 229910052744 lithium Inorganic materials 0.000 claims description 19
- 238000001514 detection method Methods 0.000 claims description 8
- 238000005259 measurement Methods 0.000 claims description 7
- 238000004880 explosion Methods 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract 2
- 238000007599 discharging Methods 0.000 abstract 1
- 230000002950 deficient Effects 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention discloses a method for detecting an invalid detecting point of a cell detecting cabinet, comprising the following steps: (a) charging and discharging a standard cell on a detecting point; (b) when the standard cell with charge-discharge state enters a given constant voltage phase, measuring the voltage between an anode terminal and a cathode terminal of the cell once at preset intervals. In the step (a), the anode terminal and the cathode terminal of the cell are respectively connected one lead, and one end of the lead is guided to the outside of explosion protection nets; in the step (b), the voltage between the anode terminal and the cathode terminal of the cell is measured by measuring the voltage between two leads. Through using one standard cell to charge and dynamically and continuously measuring the voltage of the point in the charging process, the measuring process and the real charging process are the same, so that the cause of cell explosion by a cell defect or by a detecting point defect can be determined so as to reduce the explosion accidents in the detecting process, reduce the loss of the cell and improve the utilization efficiency of the detecting cabinet.
Description
Technical field
The present invention relates to the detecting box in the battery production process, specifically relate to a kind of detection method invalid detecting point of cell detecting cabinet.
Background technology
The detecting box that uses in the lithium battery industry has last anchor clamps and lower clamp, one of upper and lower anchor clamps are anodal, another is a negative pole, its objective is the electric core of clamping battery and the positive and negative electrode by thimble of the many groups on the anchor clamps and electric core respectively conducting come electric core is discharged and recharged, every group of thimble on the anchor clamps i.e. a check point.Lithium rechargeable battery sometimes can blast on fire on check point in the process of forming and capacity dividing.Blast on fire may cause by electric core self-defect, also might be that check point breaks down and causes.In the production, whether have fault or electric core whether defectiveness, can only after the blast on fire of electric core the check point that accident occurs be measured and repair if being difficult to understand in advance check point.
Prior art has certain defective to the measuring method of check point.Its process is static, sets an electric current and voltage earlier that is:, measures the electric current and the voltage of check point then, compares and measures value and setting value, if deviation is big, then to the measurement point place under repair.This measuring process is once finished, and to the effect after repairing, also is to confirm in this way.But the charging process of electric core is dynamic, and promptly electric core is constantly charging in some time periods, and in the different periods, phenomenons such as skew can take place for electric current and voltage.And it is different in the above-mentioned measuring process with actual charging process, sometimes can find the skew of electric current and voltage, sometimes can not find, measurement result can not clear and definite reflection be the problem of electric core or the problem of detecting box check point, as lithium-ion electric core for common use lithium cobaltate cathode material, it is too many that the voltage of general check point surpasses the voltage 4.2V that works to the last minute, as 0.7V, can cause the blast on fire of electric core, and in the measuring process, generally can find the higher numerical range that is no more than the 0.01V of setting value of voltage of check point, and so little skew is to cause the blast on fire of electric core, the result of above-mentioned measurement can only work as for referencial use, and the check point that goes wrong generally can go out of use need not.Caused the waste of detecting box check point like this, and the blast on fire on detecting box of electric core has also caused the loss of electric core.
Summary of the invention
The technical problem to be solved in the present invention is to overcome above defective, proposes a kind of detection method of invalid detecting point of cell detecting cabinet, dynamically detects the running parameter of check point in the electric core charging process continuously, thereby can differentiate the defective of electric core and the defective of check point.
Technical matters of the present invention is achieved by the following technical programs.
The characteristics of the detection method of this invalid detecting point of cell detecting cabinet are, may further comprise the steps: a) the standard lithium cell is placed on and discharges and recharges on the check point; B) discharge and recharge the constant voltage after the stage that enters setting when the standard lithium cell, every interval setting-up time is measured the voltage between lithium cell positive and negative electrode terminal one time.
Further, also on the positive terminal of lithium cell and negative terminal, respectively be connected a lead in the described step a), and an end of lead is drawn to outside the explosion-proof net, measure voltage between lithium cell positive and negative electrode terminal by the voltage between two leads of explosion-proof net external pelivimetry in the described step b).
In the described step b), with the constant voltage voltage ratio of voltage between the lithium cell positive and negative electrode terminal that measures and setting at every turn, if one-shot measurement voltage occurring is higher than setting voltage, then to the check point place under repair.
When described measuring voltage is higher than setting voltage 0.05V～0.2V then to the check point place under repair.
The present invention is compared with the prior art the beneficial effect that has: by using a standard lithium cell charging, and in the process of charging, dynamically measure the voltage of this lithium cell continuously, measuring process is consistent with actual charging process, is to be caused or caused by the check point defective by electric core defective thereby can tell the blast on fire of electric core.The present invention can use in the process of forming and capacity dividing, and whether the point of understanding detecting box in advance has problem; Also can use, clearly judge the problem of whether having put in electric core blast on fire back; Also can after to a repairing, use, judge the effect of repairing.The present invention can be clear and definite the check point of understanding detecting box whether lost efficacy, reduce explosion accident on fire in testing process generation, reduce electric core loss and improve the utilization ratio of detecting box.
Description of drawings
Fig. 1 is the device connection diagram of the specific embodiment of the invention.
Embodiment
As shown in Figure 1, the battery detecting cabinet has last anchor clamps 2, lower clamp 4, and upper and lower anchor clamps have one for anodal, and another is a negative pole.Last anchor clamps 2 are provided with a plurality of thimbles 1 of going up, and lower clamp 4 is provided with a plurality of thimbles 5 down, and the electric core 3 of lithium battery is clamped in the anchor clamps by the upper and lower thimble of correspondence, and the thimble up and down of every group of correspondence constitutes a check point of detecting box.
During measurement, select all normal standard lithium cell 3 of voltage, internal resistance and a capacity to be placed on the check point that needs to detect.On the positive terminal of standard electric core and negative terminal, respectively weld a metal tape 6 that about 1m is long, and an end of metal tape 6 is drawn to outside the explosion-proof net.Electric core 3 is discharged and recharged by operate as normal step preface.The constant voltage that enters setting in charging is after the stage, the voltage of measuring between once electric core positive and negative electrode terminal with the test pencil contacting metal band 6 of multimeter every one section setting-up time.Whether more each measuring voltage and setting voltage lost efficacy with this check point of judging detecting box: if each measuring voltage all in the accuracy rating of detecting box, can think that then this check point is normal; If measuring voltage is a little more than setting voltage, as measuring voltage be higher than setting voltage 0.05V then this check point need to repair, if the blast on fire of electric core has just been arranged, can think that the defective of electric core self causes at this check point; If one-shot measurement voltage is far above setting voltage, as measuring voltage be higher than setting voltage such as 0.4V then this check point need to repair, if the blast on fire of electric core has just been arranged, then judge it is the fault of check point at this check point.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (4)
1. the detection method of an invalid detecting point of cell detecting cabinet is characterized in that, may further comprise the steps: a) the standard lithium cell is placed on and discharges and recharges on the check point; B) discharge and recharge the constant voltage after the stage that enters setting when the standard lithium cell, every interval setting-up time is measured the voltage between lithium cell positive and negative electrode terminal one time.
2. the detection method of electric core detecting box check point as claimed in claim 1, it is characterized in that: also on the positive terminal of lithium cell and negative terminal, respectively be connected a lead in the described step a), and an end of lead is drawn to outside the explosion-proof net, measure voltage between lithium cell positive and negative electrode terminal by the voltage between two leads of explosion-proof net external pelivimetry in the described step b).
3. the detection method of electric core detecting box check point as claimed in claim 1, it is characterized in that: in the described step b), with the constant voltage voltage ratio of voltage between the lithium cell positive and negative electrode terminal that measures and setting at every turn, if one-shot measurement voltage occurring is higher than setting voltage, then to the check point place under repair.
4. the detection method of electric core detecting box check point as claimed in claim 3 is characterized in that: when described measuring voltage is higher than setting voltage 0.05V～0.2V then to the check point place under repair.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100672840A CN101581766A (en) | 2008-05-15 | 2008-05-15 | Method for detecting invalid detecting point of cell detecting cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100672840A CN101581766A (en) | 2008-05-15 | 2008-05-15 | Method for detecting invalid detecting point of cell detecting cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101581766A true CN101581766A (en) | 2009-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100672840A Pending CN101581766A (en) | 2008-05-15 | 2008-05-15 | Method for detecting invalid detecting point of cell detecting cabinet |
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| Country | Link |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102645610A (en) * | 2012-04-25 | 2012-08-22 | 中航锂电（洛阳）有限公司 | Point contact type cell pressure short circuit testing device |
| CN108614232A (en) * | 2018-07-06 | 2018-10-02 | 山东大学 | A kind of calibration tooling for forming and capacity dividing test power supply automation calibration system |
| CN109472284A (en) * | 2018-09-18 | 2019-03-15 | 浙江大学 | A kind of battery core defect classification method based on zero sample learning of unbiased insertion |
| CN112098863A (en) * | 2020-09-14 | 2020-12-18 | 江苏塔菲尔动力系统有限公司 | Method, device and system for detecting failure of lithium ion battery |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1291724A (en) * | 1999-10-07 | 2001-04-18 | 广州擎天实业有限公司电工分公司 | Automatic sampling correction method for voltage of battery |
| CN2788207Y (en) * | 2005-04-26 | 2006-06-14 | 深圳市比克电池有限公司 | Battery short circuit testing device |
| EP1921457A1 (en) * | 2005-08-29 | 2008-05-14 | Toyota Jidosha Kabushiki Kaisha | Insulation resistance degradation detector and failure self-diagnostic method for insulation resistance degradation detector |
-
2008
- 2008-05-15 CN CNA2008100672840A patent/CN101581766A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1291724A (en) * | 1999-10-07 | 2001-04-18 | 广州擎天实业有限公司电工分公司 | Automatic sampling correction method for voltage of battery |
| CN2788207Y (en) * | 2005-04-26 | 2006-06-14 | 深圳市比克电池有限公司 | Battery short circuit testing device |
| EP1921457A1 (en) * | 2005-08-29 | 2008-05-14 | Toyota Jidosha Kabushiki Kaisha | Insulation resistance degradation detector and failure self-diagnostic method for insulation resistance degradation detector |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102645610A (en) * | 2012-04-25 | 2012-08-22 | 中航锂电（洛阳）有限公司 | Point contact type cell pressure short circuit testing device |
| CN102645610B (en) * | 2012-04-25 | 2014-07-23 | 中航锂电（洛阳）有限公司 | Point contact type cell pressure short circuit testing device |
| CN108614232A (en) * | 2018-07-06 | 2018-10-02 | 山东大学 | A kind of calibration tooling for forming and capacity dividing test power supply automation calibration system |
| CN109472284A (en) * | 2018-09-18 | 2019-03-15 | 浙江大学 | A kind of battery core defect classification method based on zero sample learning of unbiased insertion |
| CN112098863A (en) * | 2020-09-14 | 2020-12-18 | 江苏塔菲尔动力系统有限公司 | Method, device and system for detecting failure of lithium ion battery |
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Application publication date: 20091118 |