CN113588174A - Method for detecting sealing performance of battery - Google Patents
Method for detecting sealing performance of battery Download PDFInfo
- Publication number
- CN113588174A CN113588174A CN202110891145.5A CN202110891145A CN113588174A CN 113588174 A CN113588174 A CN 113588174A CN 202110891145 A CN202110891145 A CN 202110891145A CN 113588174 A CN113588174 A CN 113588174A
- Authority
- CN
- China
- Prior art keywords
- penetrant
- battery
- developer
- housing
- detection method
- 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
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000007789 sealing Methods 0.000 title abstract description 13
- 238000001514 detection method Methods 0.000 claims abstract description 10
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 5
- 230000000149 penetrating effect Effects 0.000 claims abstract description 3
- 239000012216 imaging agent Substances 0.000 claims description 8
- 238000005507 spraying Methods 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 2
- 239000012466 permeate Substances 0.000 claims description 2
- 238000012800 visualization Methods 0.000 claims 2
- 238000007689 inspection Methods 0.000 claims 1
- 230000007547 defect Effects 0.000 abstract description 11
- 239000007788 liquid Substances 0.000 abstract description 10
- 239000011248 coating agent Substances 0.000 abstract description 2
- 238000000576 coating method Methods 0.000 abstract description 2
- 239000002357 osmotic agent Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000001680 brushing effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/107—Primary casings; Jackets or wrappings characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
-
- 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
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
The invention discloses a method for detecting the tightness of a battery, which comprises the step of firstly coating a penetrating agent into a shell of the battery. The housing is then contacted with the developer. And then waiting for 15-30 minutes to enable the leaked penetrant to react with the developer. And finally, observing and recording the information of the leakage position of the shell. According to the method for detecting the sealing performance of the battery, disclosed by the invention, the penetrant is utilized to be displayed in the developer, the permeation of the shell sealing defect can be amplified and displayed, the quality detection is facilitated, the problems of liquid leakage, short circuit and the like of a finished battery are avoided, and the safety performance of the battery is improved.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a method for detecting the sealing property of a battery.
Background
The problems of liquid leakage and liquid seepage of the cylindrical battery always troubles battery production enterprises, the problems of liquid leakage and liquid seepage of the cylindrical battery are often discovered only after long storage or use, and after the battery leaks, the liquid leakage battery can corrode electric equipment, the resulting consequence is light, the electric equipment is damaged, the loss is caused, and the safety accident is caused.
Therefore, a method for detecting the sealing performance of the battery is needed, which solves the problems of liquid leakage and liquid seepage which are fine or difficult to find in time.
Disclosure of Invention
In this summary, concepts in a simplified form are introduced that are further described in the detailed description. This summary of the invention is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.
To at least partially solve the above problems, the present invention provides a method for detecting sealability of a battery, comprising:
applying a penetrant into a housing of the battery;
contacting the housing with a developer;
waiting for 15-30 minutes to allow the leaked penetrant to appear in the developer;
and observing and recording the information of the leakage position of the shell.
According to the method for detecting the sealing performance of the battery, disclosed by the invention, the leakage defect on the shell can be displayed in an enlarged manner by utilizing the appearance of the penetrant in the developer, the sealing performance effect can be rapidly and visually detected, the problems of liquid leakage, short circuit and the like of a finished battery are avoided, and the safety performance of the battery is improved.
Further, the contacting the housing with the imaging agent comprises:
spraying the developer to the outside of the housing.
Further, the contacting the housing with the imaging agent comprises:
immersing the housing in the imaging agent. Thereby, the effect of amplifying the leak defect can be further improved.
Further, the applying the osmotic agent into the housing of the battery includes:
and cutting the sealed shell from the cross section, inverting the part with the seal, and spraying the penetrating agent inwards. According to the scheme, the leakage sealing part can be detected.
Further, the waiting for 15min to 30min to allow the leaked penetrant to react with the developer includes:
the penetrant enters the developer from the leakage, rapidly diffuses and sets in the developer. Therefore, the shape of the leakage defect can be fixed, and observation is facilitated.
Further, the information of the leakage position comprises the position, the shape, the size and the trend of the leakage position.
Further, the penetrant has a color. According to the scheme, the formation of the penetrant in the developer can be increased, so that the diffusion shape of the penetrant is larger, and the fixed defect shape is more obvious.
Further, the penetrant is a fluorescent penetrant. Thereby, the visibility of the penetrant in the developer can be increased.
Drawings
The following drawings of the invention are included to provide a further understanding of the invention. The drawings illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.
In the drawings:
fig. 1 is a schematic flow chart of a method for detecting the sealability of a battery according to the present invention;
fig. 2 is a schematic view of the method for detecting the sealability of a battery according to the present invention;
fig. 3 is a schematic view showing a colored penetrant gradually diffusing in a developer upon detection in the method for detecting the sealability of a battery according to the present invention; and
fig. 4 is a schematic view showing that the coloring penetrant is fixed in the developer at the time of detection according to the method for detecting the sealing property of a battery of the present invention.
Description of the reference numerals
100: the battery 110: a housing 120: cap cap
130: sealing 140: defect 150: penetrant
160: shaped penetrant 200: the container 210: imaging agent
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the invention.
In the following description, a detailed description will be given in order to thoroughly understand the present invention. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of these exemplary embodiments to those skilled in the art. It is apparent that the implementation of the embodiments of the invention is not limited to the specific details familiar to those skilled in the art. The following detailed description of the preferred embodiments of the invention, however, the invention is capable of other embodiments in addition to those detailed.
It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", and the like are used herein for purposes of illustration only and are not limiting.
The method for detecting the sealability of the battery of the present invention will be described in detail with reference to coating.
Refer to fig. 1 to 4. The method for detecting the sealability of a battery according to the present invention is preferably applied to a cylindrical battery. The housing 110 of the battery 100 is preferably a steel can.
The detection method comprises the following steps:
s1: the osmotic agent is coated into the case 110 of the battery 100.
Specifically, as shown in fig. 2, it is preferable that the cylindrical battery 100 is cut in a radial direction, and then the half case 110 is opened upward, and the penetrant is applied thereto. A seal is provided at the seal 130 where the battery case is attached to the cap 120 where leak defects 140 are most likely to occur. It is therefore more preferred that the osmotic agent 150 is coated within the half shell 110 having the seal 130. For ease of viewing, the penetrant may be colored. Preferably, the penetrant is also a fluorescent penetrant, whereby it can be observed more clearly.
Wherein the penetrant can be applied in various ways, such as injection, spraying, brushing, and the like. Preferably by spraying.
S2: housing 110 is brought into contact with developer 210. In this step, a layer of developer 210 may be applied to the outer surface of the respective half-shell, for example by spraying, brushing, or the like, similar to that described above.
Alternatively, the respective half-shell 110 may be at least partially immersed in a container 200 containing a developer 210, in which case a dye penetrant is preferably desired.
S3: waiting for a preset time period to allow the leaked penetrant to react with the developer 210, for example, the preset time period may be 15-30 minutes.
In this process, referring to fig. 3 and 4, the penetrant enters the developer 210 from the leakage, rapidly diffuses and develops a set. Thus, the shape of the leak defect 140 can be fixed, facilitating observation.
Illustratively, when housing 110 is partially immersed in imaging agent 210, osmotic agent 150 permeates down into imaging agent 210 under gravity and capillary action. Then, it will continue to diffuse during the movement until the reaction sets. Thus, in this embodiment, the shaped osmotic agent 160 may take on a shape that is smaller at the top and larger at the bottom, further magnifying the defect and further facilitating viewing. In addition, the density of the penetrant is preferably greater than that of the developer to facilitate movement thereof.
S4: the information of the leak in the casing 110 is observed and recorded, i.e., the location, shape, size and orientation of the leak defect 140 is observed and recorded to provide data support for subsequent upgrading operations.
In summary, according to the method for detecting the sealing performance of the battery of the present invention, the penetrant 150 is shaped in the developer 210, so that the leakage defect 140 on the case 110 can be magnified and displayed, the sealing performance can be detected quickly and visually, the problems of liquid leakage, short circuit and the like of the finished battery can be avoided, and the safety performance of the battery can be improved.
The flows and steps described in all the preferred embodiments described above are only examples. Unless an adverse effect occurs, various processing operations may be performed in a different order from the order of the above-described flow. The above-mentioned steps of the flow can be added, combined or deleted according to the actual requirement.
Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Features described herein in one embodiment may be applied to another embodiment, either alone or in combination with other features, unless the feature is otherwise inapplicable or otherwise stated in the other embodiment.
The present invention has been illustrated by the above embodiments, but it should be understood that the above embodiments are for illustrative and descriptive purposes only and are not intended to limit the invention to the scope of the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many variations and modifications may be made in accordance with the teachings of the present invention, which variations and modifications are within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. A method of detecting the sealability of a battery comprising:
applying a penetrant into a sealed housing of the battery;
contacting the housing seal location with a developer;
waiting for 15-30 min to allow the leaked penetrant to permeate and be displayed in the developer;
and observing the information of the leakage position of the shell seal.
2. The inspection method of claim 1, wherein said contacting the housing closure location with a visualization agent comprises:
spraying the developer to the outside of the housing.
3. The detection method of claim 1, wherein the contacting the housing with a visualization agent comprises:
immersing the housing closure portion in the imaging agent.
4. The detection method of claim 1, wherein the applying a penetrant into a housing of the battery comprises:
and cutting the sealed shell from the cross section, inverting the part with the seal, and spraying the penetrating agent inwards.
5. The detection method according to claim 1, wherein the waiting for 15min to 30min to allow the leaked penetrant to react with the imaging agent comprises:
the penetrant enters the developer from the leakage position, and the penetrant rapidly diffuses and shows the shape.
6. The detection method according to claim 1, wherein the information of the leak includes a position, a shape, a size and a direction of the leak.
7. The detection method according to any one of claims 1 to 6, wherein the penetrant has a color.
8. The detection method according to any one of claims 1 to 6, wherein the penetrant is a fluorescent penetrant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110891145.5A CN113588174A (en) | 2021-08-04 | 2021-08-04 | Method for detecting sealing performance of battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110891145.5A CN113588174A (en) | 2021-08-04 | 2021-08-04 | Method for detecting sealing performance of battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113588174A true CN113588174A (en) | 2021-11-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110891145.5A Pending CN113588174A (en) | 2021-08-04 | 2021-08-04 | Method for detecting sealing performance of battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113588174A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0502837A1 (en) * | 1991-03-06 | 1992-09-09 | Varta Batteri Aktiebolag | Process of detecting defects in solid coating layers |
| US20060134511A1 (en) * | 2004-12-22 | 2006-06-22 | Toyota Jidosha Kabushiki Kaisha | Battery, manufacturing method of battery, and check method of electrolyte leakage |
| KR100983920B1 (en) * | 2010-06-14 | 2010-09-27 | 나우기연주식회사 | Automatic penetrant testing apparatus |
| CN106932154A (en) * | 2017-03-09 | 2017-07-07 | 国轩新能源（苏州）有限公司 | The leakage analysis method of aluminum plastic film soft package lithium battery |
| CN109187572A (en) * | 2018-11-12 | 2019-01-11 | 卢乐 | For bleeding agent aspiration device during Liquid penetrant testing |
| CN110579322A (en) * | 2019-09-24 | 2019-12-17 | 开沃新能源汽车集团有限公司 | method for testing tightness of sanitation vehicle tank body |
-
2021
- 2021-08-04 CN CN202110891145.5A patent/CN113588174A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0502837A1 (en) * | 1991-03-06 | 1992-09-09 | Varta Batteri Aktiebolag | Process of detecting defects in solid coating layers |
| US20060134511A1 (en) * | 2004-12-22 | 2006-06-22 | Toyota Jidosha Kabushiki Kaisha | Battery, manufacturing method of battery, and check method of electrolyte leakage |
| KR100983920B1 (en) * | 2010-06-14 | 2010-09-27 | 나우기연주식회사 | Automatic penetrant testing apparatus |
| CN106932154A (en) * | 2017-03-09 | 2017-07-07 | 国轩新能源（苏州）有限公司 | The leakage analysis method of aluminum plastic film soft package lithium battery |
| CN109187572A (en) * | 2018-11-12 | 2019-01-11 | 卢乐 | For bleeding agent aspiration device during Liquid penetrant testing |
| CN110579322A (en) * | 2019-09-24 | 2019-12-17 | 开沃新能源汽车集团有限公司 | method for testing tightness of sanitation vehicle tank body |
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