CN105810970A - Method for rapidly detecting sealing performance of battery box - Google Patents
Method for rapidly detecting sealing performance of battery box Download PDFInfo
- Publication number
- CN105810970A CN105810970A CN201610139856.6A CN201610139856A CN105810970A CN 105810970 A CN105810970 A CN 105810970A CN 201610139856 A CN201610139856 A CN 201610139856A CN 105810970 A CN105810970 A CN 105810970A
- Authority
- CN
- China
- Prior art keywords
- case
- battery box
- mesuring battary
- detected
- battery case
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000001514 detection method Methods 0.000 claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 238000012360 testing method Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4228—Leak testing of cells or batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/50—Methods or arrangements for servicing or maintenance, e.g. for maintaining operating temperature
- H01M6/5083—Testing apparatus
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
Abstract
The invention provides a method for rapidly detecting the tightness of a battery box, which comprises the steps of sealing the battery box to be detected, smearing auxiliary detection liquid for detecting the air leakage position on a box body of the battery box to be detected, pressurizing the battery box to be detected through an inflating device, maintaining the pressure of the battery box to be detected, calculating the variation range of attenuation indication values of the pressure value of the battery box to be detected, judging whether the tightness of the battery box to be detected is qualified or not, and finally judging the accurate position of the air leakage of the battery box by observing the bubble generation state of the auxiliary detection liquid. The invention can greatly reduce the detection cost, can quickly judge the air leakage position of the battery box and improve the working efficiency.
Description
Technical field
The present invention relates to technical field of lithium batteries, be specifically related to a kind of method for quickly detecting battery case sealing.
Background technology
Current driving force lithium battery industry requirement battery case sealing is higher, it is generally required to reach the requirement of IP67, and carry out IP67 sealing propertytest and need to put in battery case weight, overall urgent screw, again battery case is hung in pond, after certain time, then hang out battery case by hanging, open battery box cover after laying down screw one by one, whether have water stain in observation battery case.This method has the disadvantage in that one is inefficiency, often because an only small position does not fix and causes whole detection to be destroyed overnight, it usually needs repeatedly repeatedly detect；Two is that IP67 of detection is relatively costly, and repeatedly detection causes higher testing cost repeatedly；Three is that IP67 detects and is difficult to after unsuccessfully find out the accurate location leaked.
Summary of the invention
The present invention provides a kind of method of quick detection battery case sealing, can judge Gas leak position fast and effectively, and be substantially reduced testing cost.
For solving above-mentioned technical problem, the present invention adopts the following technical scheme that
A kind of method of quick detection battery case sealing, comprises the steps:
1) mesuring battary case is sealed；
2) on the casing of mesuring battary case, smear the auxiliary detection liquid for detecting Gas leak position；
3) pressurizeed to mesuring battary case by aerating device；
4) mesuring battary case is carried out pressurize, and calculate the decay indicating value excursion of mesuring battary case force value, as the intrinsic pressure FN of battery case after pressurize1≥FN2During-k*t, the sealing of mesuring battary case is qualified, wherein FN2Initial cell case for starting pressurize is intrinsic pressure, and k is attenuation constant, and t is the dwell time；
5) by observing the blebbing state of auxiliary detection liquid, it is judged that the accurate location of battery case gas leakage.
Further, step 1) concretely comprise the following steps: the case mouth place of mesuring battary case is placed sealing ring, then case lid, casing and sealing ring are threaded connection are fixed together.
Preferably, described auxiliary detection liquid is suds.
Preferably, described attenuation constant k is 0.016Kp/s.
By above technical scheme it can be seen that the present invention can be substantially reduced testing cost, it is possible to quickly judge battery case Gas leak position, improve work efficiency.
Accompanying drawing explanation
Fig. 1 is the principle schematic of the inventive method.
Detailed description of the invention
Below in conjunction with accompanying drawing, a kind of preferred implementation of the present invention is described in detail.
Fig. 1 illustrates that in the inventive method, aerating device is for detecting the schematic diagram of battery case sealing, described aerating device includes Pressure gauge 1, controls switch 2 and the flexible pipe 3 for connecting, at aerating device, valve 4 is set with battery case 5 and external gas source 6 junction, can quickly be docked with battery case air inlet by aerating device, aerating device docks with external gas source, guarantee that aerating device is air tight in air inlet and packing stage, improve work efficiency.Described Pressure gauge 1 is for showing the pressure state of present battery case, the described switch 2 that controls can control the closure state of compression air inlet, when controlling switch 2 unlatching, compression air flows into battery case 5 by flexible pipe 3, and when controlling switch 2 closedown, compression air stops circulation, and battery case 5 is in packing state.
During work, first putting into sealing ring on the casing of mesuring battary case, case lid, casing and sealing ring are bolted, except battery case air inlet 7, whole battery case 5 is in air-tight state.Suds are smeared by casing and case lid joint place, each corner of battery case at mesuring battary case, the valve of aerating device one end is connected with battery case air inlet, the valve of the other end is connected with external gas source, slowly open control switch 2, when the indicating value of Pressure gauge 1 rises to specified pressure, closing control switchs, and now battery case 5 is in packing state, the dwell time s of record battery case the indicating value attenuation state of observed pressure table, it is judged that whether battery case reaches seal request.
The concrete determination methods of sealing is: as the intrinsic pressure FN of battery case after pressurize1≥FN2During-k*t, the sealing of mesuring battary case is qualified, wherein FN2Initial cell case for starting pressurize is intrinsic pressure, unit K p, and k is attenuation constant, and by substantial amounts of test accumulation, it is the dwell time that k value is about 0.016Kp/s, t, and unit is the second.When starting pressurize and being initial, t=0, now FN1=FN2, along with the increase of t, FN1More little, eventually become 0Kp.
Finally, by observing the accurate location of the blebbing condition adjudgement battery case gas leakage of suds.
The above embodiment is only that the preferred embodiment of the present invention is described; not the scope of the present invention is defined; under the premise designing spirit without departing from the present invention; various deformation that technical scheme is made by those of ordinary skill in the art and improvement, all should fall in the protection domain that claims of the present invention are determined.
Claims (4)
1. the method for a quick detection battery case sealing, it is characterised in that comprise the steps:
1) mesuring battary case is sealed；
2) on the casing of mesuring battary case, smear the auxiliary detection liquid for detecting Gas leak position；
3) pressurizeed to mesuring battary case by aerating device；
4) mesuring battary case is carried out pressurize, and calculate the decay indicating value excursion of mesuring battary case force value, when after pressurize, battery case is intrinsic pressureTime, the sealing of mesuring battary case is qualified, whereinInitial cell case for starting pressurize is intrinsic pressure,For attenuation constant,For the dwell time；
5) by observing the blebbing state of auxiliary detection liquid, it is judged that the accurate location of battery case gas leakage.
2. method according to claim 1, it is characterised in that concretely comprising the following steps of step 1): the case mouth place of mesuring battary case is placed sealing ring, then case lid, casing and sealing ring are threaded connection are fixed together.
3. method according to claim 1, it is characterised in that described auxiliary detection liquid is suds.
4. method according to claim 1, it is characterised in that described attenuation constantFor 0.016Kp/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610139856.6A CN105810970A (en) | 2016-03-11 | 2016-03-11 | Method for rapidly detecting sealing performance of battery box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610139856.6A CN105810970A (en) | 2016-03-11 | 2016-03-11 | Method for rapidly detecting sealing performance of battery box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105810970A true CN105810970A (en) | 2016-07-27 |
Family
ID=56467230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610139856.6A Pending CN105810970A (en) | 2016-03-11 | 2016-03-11 | Method for rapidly detecting sealing performance of battery box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105810970A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106441735A (en) * | 2016-10-18 | 2017-02-22 | 合肥国轩高科动力能源有限公司 | Waterproof detection method for battery pack |
| CN107192517A (en) * | 2017-05-17 | 2017-09-22 | 中通客车控股股份有限公司 | A kind of passenger coach load power battery box air tightness detection system and method |
| CN107878204A (en) * | 2016-09-30 | 2018-04-06 | 长城汽车股份有限公司 | Hermetization testing method, system and the vehicle of battery bag |
| CN109103352A (en) * | 2017-06-20 | 2018-12-28 | 北京小米移动软件有限公司 | Battery and equipment |
| CN109521365A (en) * | 2018-12-04 | 2019-03-26 | 远东福斯特新能源江苏有限公司 | Power battery box body protective capacities detection device and its detection method |
| CN115032546A (en) * | 2022-08-15 | 2022-09-09 | 常州武进中瑞电子科技股份有限公司 | A testing arrangement for lithium cell reliability detects |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0674857A (en) * | 1992-08-28 | 1994-03-18 | Matsushita Electric Ind Co Ltd | Method for inspecting airtightness of battery |
| CN101963539A (en) * | 2009-07-24 | 2011-02-02 | 上海新沪电机厂有限公司 | Method for detecting air-tightness of cavity of electromechanical product |
| CN202582851U (en) * | 2012-05-09 | 2012-12-05 | 河北裕龙铸造有限公司 | Dry type pressure leakage testing platform |
| CN103234714A (en) * | 2013-03-22 | 2013-08-07 | 奇瑞汽车股份有限公司 | Tightness detection unit and method for large-capacity power lithium ion explosion-proof valve |
-
2016
- 2016-03-11 CN CN201610139856.6A patent/CN105810970A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0674857A (en) * | 1992-08-28 | 1994-03-18 | Matsushita Electric Ind Co Ltd | Method for inspecting airtightness of battery |
| CN101963539A (en) * | 2009-07-24 | 2011-02-02 | 上海新沪电机厂有限公司 | Method for detecting air-tightness of cavity of electromechanical product |
| CN202582851U (en) * | 2012-05-09 | 2012-12-05 | 河北裕龙铸造有限公司 | Dry type pressure leakage testing platform |
| CN103234714A (en) * | 2013-03-22 | 2013-08-07 | 奇瑞汽车股份有限公司 | Tightness detection unit and method for large-capacity power lithium ion explosion-proof valve |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107878204A (en) * | 2016-09-30 | 2018-04-06 | 长城汽车股份有限公司 | Hermetization testing method, system and the vehicle of battery bag |
| CN107878204B (en) * | 2016-09-30 | 2020-10-02 | 蜂巢能源科技有限公司 | Battery pack sealing detection method and system and vehicle |
| CN106441735A (en) * | 2016-10-18 | 2017-02-22 | 合肥国轩高科动力能源有限公司 | Waterproof detection method for battery pack |
| CN107192517A (en) * | 2017-05-17 | 2017-09-22 | 中通客车控股股份有限公司 | A kind of passenger coach load power battery box air tightness detection system and method |
| CN109103352A (en) * | 2017-06-20 | 2018-12-28 | 北京小米移动软件有限公司 | Battery and equipment |
| CN109521365A (en) * | 2018-12-04 | 2019-03-26 | 远东福斯特新能源江苏有限公司 | Power battery box body protective capacities detection device and its detection method |
| CN115032546A (en) * | 2022-08-15 | 2022-09-09 | 常州武进中瑞电子科技股份有限公司 | A testing arrangement for lithium cell reliability detects |
| CN115032546B (en) * | 2022-08-15 | 2022-11-22 | 常州武进中瑞电子科技股份有限公司 | A testing arrangement for lithium cell reliability detects |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160727 |
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| RJ01 | Rejection of invention patent application after publication |