CN104568324B - A kind of detection method of flexible-packed battery packaging effect - Google Patents
A kind of detection method of flexible-packed battery packaging effect Download PDFInfo
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- CN104568324B CN104568324B CN201410798413.9A CN201410798413A CN104568324B CN 104568324 B CN104568324 B CN 104568324B CN 201410798413 A CN201410798413 A CN 201410798413A CN 104568324 B CN104568324 B CN 104568324B
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Abstract
A kind of a kind of detection method of flexible-packed battery packaging effect, there is provided detection method of flexible-packed battery packaging effect.The present invention is employed the following technical solutions：（1）A battery core for being welded lug is taken, is put well in the aluminum plastic film of packaging battery core, aluminum plastic film leaves airbag;（2）The parameter of top side seal machine is set, battery core is packaged, airbag side is not encapsulated as liquid injection port;（3）Insulating properties detection is carried out to the battery for having sealed, if impedance is more than 200M Ω, next step is entered, is otherwise turned top side seal parameter down；（4）Injection electrolyte, seals to aluminum plastic film；（5）Battery is melted into by produce reality technique；（6）Battery after by chemical conversion is placed under the cold pressing plate of cold and hot press and presses, and tunes up top side seal parameter if leakage.The link of the most easy distending of aluminum plastic film in being made by advance simulated battery, checks aluminum plastic film packaging effect, and simulation process battery core is made of inferior pole piece or bad pole piece, with low cost, and easy to operate simple.
Description
Technical field
The present invention relates to technical field of lithium-ion battery, more particularly to a kind of inspection of flexible-packed battery packaging effect
Survey method.
Background technology
Lithium ion soft-package battery refers to the battery for packing lithium-ion electric core with aluminum plastic film, is needed to packaging in production process
Aluminum plastic film be packaged.The encapsulation of aluminum plastic film is using end socket high-temperature heating aluminum plastic film so as to which PP layers are fused into fluidised form, then
Fuse with end socket pressure the PP layers of two-layer aluminum plastic film, be just bonded together after cooling, clump and play sealing effectiveness.
General packaging effect can be detected by equipment such as puller systems.Some batteries intact nothing after encapsulation
Damage, but battery can be produced a certain amount of gas when injection electrolyte is melted into, if now using pressurization chemical conversion work
Skill, and the gas flow that produces larger when, it is possible at this pressure by aluminum plastic film distending, distending particularly at the lug is led
Leakage and battery is caused to scrap.It is thus desirable to a kind of method of effective detection flexible-packed battery packaging effect of research.
China Patent Publication No. CN 103424227A, in publication date on December 4th, 2013, discloses a kind of aluminum plastic film Soft Roll
The control method of battery heat-sealing quality.Simulated battery is first produced, and then root judges heat-sealing using extruding test and Insulation test
Effect, so that adjust hot sealing process parameter.Its limitation is to be unable to concora crush to whole battery table with the squeeze test done by extruder
Face, and do not simulate the chemical conversion gas generation process of battery, and the gas that this process is produced is in pressurization chemical conversion or cold-hot pressure
It is the one of the main reasons for causing battery leakage by aluminum plastic film distending under effect.
Content of the invention
The invention provides a kind of detection method of flexible-packed battery packaging effect, is done by the battery to having encapsulated and is insulated
Property test, situation when pressurizeing after simulated battery chemical conversion aerogenesis pre-adjusts technological parameter according to test result, it is ensured that actual raw
Yield and quality.
For achieving the above object, the present invention is employed the following technical solutions：
A kind of detection method of flexible-packed battery packaging effect, the detection method are mainly comprised the steps of：
（1）A battery core for being welded lug is taken, is put well in the aluminum plastic film of packaging battery core, aluminum plastic film leaves airbag;
（2）The parameter of top side seal machine is set, battery core is packaged, airbag side is not encapsulated as liquid injection port;
（3）Insulating properties detection is carried out to the battery for having sealed, if impedance is more than 200M Ω, next step is entered, is otherwise adjusted
Little closedtop parameter；
（4）Injection electrolyte, seals to aluminum plastic film；
（5）Battery is melted into by produce reality technique；
（6）Battery after by chemical conversion is placed under the cold pressing plate of cold and hot press and presses, and sees whether leakage and leakage position, if
Leakage then tunes up top side seal parameter.
According to described detection method, step（4）Battery is not toasted before fluid injection；When sealing to aluminum plastic film, not right
Battery vacuum-pumping, to ensure that the inside has gas to retain.
According to described detection method, step（5）In to Battery formation when, do not take pressurization chemical conversion.
According to described detection method, step（6）In to battery apply pressure be 1500-1800kg.
According to described detection method, step（3）And step（6）In adjusting parameter amplitude：The amplitude of adjustment temperature
It is 5 DEG C of integral multiples, adjusts the integral multiple of the amplitude for 0.05Mpa of pressure.
The invention has the beneficial effects as follows：The link of the most easy distending of aluminum plastic film in being made by advance simulated battery, checks aluminum
Plastic film packaging effect, pre-adjusts technological parameter, it is ensured that the quality of production.The battery core that simulation process is adopted, can use inferior pole piece
Or bad pole piece makes, with low cost and easy to operate simple.
Specific embodiment
A kind of detection method of flexible-packed battery packaging effect, the detection method are mainly comprised the steps of.
（1）A battery core for being welded lug is taken, is put well in the aluminum plastic film of packaging battery core, aluminum plastic film leaves airbag.
（2）The parameter of top side seal machine is set, battery core is packaged, airbag side is not encapsulated as liquid injection port.
（3）Insulating properties detection is carried out to the battery for having sealed, if impedance is more than 200M Ω, next step is entered, is otherwise adjusted
Little closedtop parameter.Battery after top side seal, if heat-sealing pressure is excessive or heat-sealing temperature is too high, easily by lug and aluminum plastic film aluminum
Layer contact, so that cause short circuit or lug and aluminum plastic film short circuit between positive and negative lug.Therefore, impedance does not reach requirement, needs heat
Wind pressure or heat-sealing temperature are turned down.
（4）Appropriate electrolyte is injected, aluminum plastic film is sealed.Battery is not toasted before this step, to ensure to be melted into
When gas production.
（5）Battery is melted into by produce reality technique.It is melted into actual production technique, is the product for ensureing that simulation is actual
Tolerance.
（6）Battery after by chemical conversion is placed under the cold pressing plate of cold and hot press and is pressed with certain pressure.See whether leakage and
Leakage position, tunes up top side seal parameter if leakage.
The step（4）In when sealing to aluminum plastic film, not to battery vacuum-pumping, to ensure that the inside has gas to retain.For protecting
Card simulates the more situation of Battery formation aerogenesis, not evacuation when this step is encapsulated.
The step（5）In to Battery formation when, do not take pressurization chemical conversion.
The step（6）In to battery apply pressure be [b1].When this pressure is actual production, pressurization is melted into and cold and hot
Pressure limit during pressure.
The step（3）And step（6）The amplitude of middle adjusting parameter is the integral multiple that temperature is 5 DEG C, and pressure is 0.05Mpa
Integral multiple.
Embodiment
With reference to specific embodiment, present disclosure is more clearly described, but the enforcement of the present invention is not limited to
In below example.
Embodiment 1
The ready-made battery core of the inferior pole piece of use is taken, lug is welded, is put well in the aluminum plastic film of packaging battery core, aluminum plastic film
Leave 60mm width airbags.Set the parameter of top side seal machine, 170 DEG C of closedtop temperature, 170 DEG C of side seal temperature, closedtop pressure
0.4Mpa, side seal pressure 0.4Mpa, closedtop time 3S, side seal time 3S.Battery core is packaged, airbag side is used as liquid injection port
Do not encapsulate.Insulating properties detection is carried out to the battery for having sealed, and impedance is obtained more than 200M Ω.Injection 100g electrolyte, to plastic-aluminum
Film is sealed, not evacuation during sealing.Battery is melted into by produce reality technique, is not pressurized during chemical conversion.Electricity after by chemical conversion
Pond is placed under the cold pressing plate of cold and hot press, and regulation pressure value is 1800kg, and then pressing plate declines pressure, and observation battery is in negative pole pole
There is a small amount of leakage at ear.Illustrate that package quality is unqualified, by parameter adjustment be 175 DEG C of closedtop temperature, closedtop pressure 0.45Mpa,
Closedtop time 4S, after technical arrangement plan, does this experiment again, and package quality is qualified.
Embodiment 2
The experimentation of embodiment 2 is identical with embodiment 1 with result, and difference is, during adjusting parameter, will ginseng
Number is adjusted to 180 DEG C of closedtop temperature, closedtop pressure 0.45Mpa, closedtop time 3S, side seal parameter constant.After parameter change, again
This experiment is done, package quality meets requirement.
Embodiment 3
The experimentation of embodiment 3 is identical with embodiment 1 with result, and difference is, during adjusting parameter, will ginseng
Number is adjusted to 170 DEG C of closedtop temperature, closedtop pressure 0.5Mpa, closedtop time 4S, side seal parameter constant.After parameter change, battery
When being placed in pressure under the cold pressing plate of cold and hot press, distending leakage at battery pole ear.Package quality is unqualified, and this parameter setting is described
Less than normal.
Embodiment 4
The experimentation of embodiment 4 is identical with embodiment 1 with result, and difference is, during adjusting parameter, will ginseng
Number is adjusted to 185 DEG C of closedtop temperature, closedtop pressure 0.5Mpa, closedtop time 3S, side seal parameter constant.Packaged battery is entered
When row insulating properties is detected, impedance is obtained less than 200M Ω.Illustrate that encapsulation parameter is arranged excessive.
Embodiment 5
The experimentation of embodiment 5 is identical with embodiment 1 with result, and difference is, during adjusting parameter, will ginseng
Number is adjusted to 175 DEG C of closedtop temperature, closedtop pressure 0.55Mpa, closedtop time 3S, side seal parameter constant.After parameter change, encapsulation
Quality meets requirement.
Claims (5)
1. a kind of detection method of flexible-packed battery packaging effect, it is characterised in that the detection method mainly includes following step
Suddenly：
（1）A battery core for being welded lug is taken, is put well in the aluminum plastic film of packaging battery core, aluminum plastic film leaves airbag；
（2）The parameter for setting top side seal machine is packaged to battery core, 170 DEG C of closedtop temperature, 170 DEG C of side seal temperature, closedtop pressure
Power 0.4Mpa, side seal pressure 0.4Mpa, closedtop time 3S, side seal time 3S, airbag side is not encapsulated as liquid injection port；
（3）Insulating properties detection is carried out to the battery for having sealed, if impedance is more than 200M Ω, next step is entered, is otherwise turned top down
Envelope parameter；
（4）Injection electrolyte, seals to aluminum plastic film；
（5）Battery is melted into by produce reality technique；
（6）Battery after by chemical conversion is placed under the cold pressing plate of cold and hot press and presses, and sees whether leakage and leakage position, if leakage
Top side seal parameter is then tuned up.
2. the detection method of flexible-packed battery packaging effect according to claim 1, it is characterised in that step（4）Fluid injection
Front battery is not toasted；When sealing to aluminum plastic film, not to battery vacuum-pumping, to ensure that the inside has gas to retain.
3. the detection method of flexible-packed battery packaging effect according to claim 1, it is characterised in that step（5）In right
During Battery formation, pressurization chemical conversion is not taken.
4. the detection method of flexible-packed battery packaging effect according to claim 1, it is characterised in that step（6）In right
The pressure that battery applies is 1500-1800kg.
5. the detection method of flexible-packed battery packaging effect according to claim 1, it is characterised in that step（3）And step
Suddenly（6）In adjusting parameter amplitude：The amplitude of adjustment temperature is 5 DEG C of integral multiples, adjusts the amplitude of pressure for 0.05Mpa's
Integral multiple.
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107631844A (en) * | 2016-07-18 | 2018-01-26 | 万向二三股份公司 | A kind of method for conducting leak test of soft package lithium battery |
| CN108615944A (en) * | 2016-12-10 | 2018-10-02 | 深圳格林德能源有限公司 | A kind of polymer Li-ion battery aluminum plastic film package quality judgement technique |
| CN106711512B (en) * | 2017-02-21 | 2019-03-15 | 山东玉皇新能源科技有限公司 | Soft-package battery production method based on measurable internal temperature of battery device |
| CN107946652A (en) * | 2017-11-07 | 2018-04-20 | 江苏金坛绿能新能源科技有限公司 | A kind of flexible-packed battery aluminum plastic film encapsulation performance detection method |
| CN107966400B (en) * | 2017-11-29 | 2020-05-19 | 天津力神电池股份有限公司 | Method for detecting packaging effect of aluminum plastic film |
| CN109212132A (en) * | 2018-08-22 | 2019-01-15 | 湖南立方新能源科技有限责任公司 | A kind of soft-package battery encapsulation failure detection method |
| CN110887616A (en) * | 2018-09-07 | 2020-03-17 | 江西格林德能源有限公司 | Method for detecting leakage of tab glue part of soft package lithium ion battery |
| CN110186628A (en) * | 2019-05-14 | 2019-08-30 | 铠龙东方汽车有限公司 | A kind of power battery pack air-tightness leak source detection method and device |
| CN111879618B (en) * | 2020-07-09 | 2022-04-12 | 合肥国轩高科动力能源有限公司 | Method for testing withstand pressure of soft-packaged battery cell |
| CN112736369B (en) * | 2021-01-11 | 2022-06-21 | 远景动力技术(江苏)有限公司 | Lithium ion battery and design process thereof |
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Address after: 277800 No. x6699, Guangming Road, high tech Zone, Zaozhuang City, Shandong Province (north of the junction of Guangming Road and Huaxin Road) Patentee after: Shandong Jinggong Electronic Technology Co.,Ltd. Address before: 277800 west side of Fuyuan 5th Road, Zaozhuang high tech Zone, Zaozhuang City, Shandong Province Patentee before: Shandong Seiko Electronic Technology Co.,Ltd. |