CN217542266U - Battery leakage detection device and battery production line - Google Patents
Battery leakage detection device and battery production line Download PDFInfo
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- CN217542266U CN217542266U CN202221209725.8U CN202221209725U CN217542266U CN 217542266 U CN217542266 U CN 217542266U CN 202221209725 U CN202221209725 U CN 202221209725U CN 217542266 U CN217542266 U CN 217542266U
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- battery
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- positioning ring
- detection device
- leakage detection
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Abstract
The utility model provides a battery leakage detection device and a battery production line, wherein the battery leakage detection device comprises a positioning ring, an indicating piece and a buffer piece, the positioning ring is annular and is used for sleeving the positive pole of a battery; the indicating piece comprises a connecting part connected with the positioning ring and an indicating part connected with the connecting part and exposed outside the positioning ring, and the indicating part can generate a color change reaction after contacting with the leakage of the battery anode; the buffer part has elasticity and is shot in the indicator inboard. Whether this battery weeping just can be judged through the condition of discolouring of observing the instruction portion to the testing personnel, has realized automated inspection, need not naked eye discernment, has improved the qualification rate, has reduced the invalid work that the naked eye detection brought behind the cover membrane.
Description
Technical Field
The utility model belongs to the technical field of the battery, especially, relate to a battery weeping detection device and battery production line.
Background
In recent years, cylindrical lithium ion batteries have been developed rapidly, and have the advantages of high energy density, small size, portability, recyclability and the like, so that the cylindrical lithium ion batteries are widely used in various fields of household appliances, energy storage and power. However, since a liquid electrolyte is used in the lithium ion battery and sealing is performed using a physical deformation process, there is a risk of leakage during charge and discharge of the battery and long-term storage. After the leakage of the lithium ion battery, air and moisture may enter the battery and undergo an oxidation reaction with the internal material of the battery, which leads to a reduction in the service life of the lithium ion battery and even causes the ignition and explosion of the lithium ion battery. At present, after a finished product is produced, whether the lithium ion battery leaks or not cannot be known, and the production yield is reduced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a battery weeping detection device and battery production line aims at solving the technical problem whether can't learn lithium ion from the battery weeping among the prior art.
In order to achieve the above object, the utility model adopts the following technical scheme:
in a first aspect, a battery leakage detection device is provided for connecting a battery anode, including:
the positioning ring is annular and is used for sleeving the battery anode;
the indicating part comprises a connecting part connected with the positioning ring and an indicating part connected with the connecting part and exposed outside the positioning ring, and the indicating part can generate a color change reaction after contacting with the leakage of the battery anode.
In one embodiment of the first aspect, the retaining ring is a retaining ring made of a rigid material.
In one of the embodiments of the first aspect, the indicating portion protrudes from one side of the positioning ring in the extending direction of the central axis thereof.
In one embodiment of the first aspect, the indicator is an indicator comprising an acid-base indicator.
In one embodiment of the first aspect, the indicator is an indicator made of pH paper.
In one embodiment of the first aspect, the indicator portion is integrally formed with the connecting portion.
In one embodiment of the first aspect, the indicating portion is in a cover shape and is used for wrapping the top of the positive electrode of the battery, and the connecting portion is annularly arranged on the edge of the indicating portion and is annularly connected to the inner annular surface of the positioning ring.
In one embodiment of the first aspect, the battery leakage detection device further includes a buffer member, which has elasticity and is located inside the connection portion so as to elastically abut against the battery positive electrode.
In one embodiment of the first aspect, the buffer is a sponge.
In a second aspect, a battery production line is provided, which includes an identification device and the battery leakage detection device as described above, wherein the identification device is configured to identify a color change of the indicator.
The utility model discloses technical effect for prior art is: after battery package accomplishes, before the mantle, can cup joint this battery weeping detection device's holding ring in the battery anodal, and closely laminate with electric core, so that the indicator laminates in the battery lateral wall, if the battery is at the slot rolling department weeping, then the instruction portion can be soaked to liquid, the color change reaction takes place after the instruction portion contacts the weeping, thereby instruct this battery weeping, detection personnel just can judge whether this battery weeping through the condition of discolouing of observing the instruction portion like this, automatic detection has been realized, need not naked eye identification, the qualification rate has been improved, the invalid work that the naked eye detection brought after having reduced the mantle.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention or the description of the prior art will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a battery leakage detection device provided by an embodiment of the present invention;
fig. 2 is a sectional view of the battery leakage detecting device of fig. 1;
fig. 3 is a plan view of the battery leakage detecting device in fig. 1.
Description of reference numerals:
10. a positioning ring; 20. an indicator; 21. a connecting portion; 22. an indicating section; 30. a buffer.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "top", "bottom", "inner", "outer", and the like refer to orientations or positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.
The embodiment of the utility model provides a battery weeping detection device. The battery may be a cylindrical lithium battery having a positive electrode and a negative electrode at both ends.
When the nut cap of the battery anode and the battery core are packaged, a connecting part of the nut cap and the battery core forms a rolling groove, the rolling groove is annularly arranged on the side wall of the battery anode, and because the rolling groove is an interface of the nut cap and the battery core, after the battery is vacuumized, if the rolling groove is poor in sealing, liquid in the battery can be leaked out through a gap in the rolling groove, the leaked liquid cannot be easily observed by naked eyes, and whether the leaked liquid leaks from the battery is judged by a detector.
The battery leakage detection device provided by the embodiment is used for connecting the battery anode, and particularly is sleeved on the battery anode. The battery leakage detection device is used for detecting whether the battery anode leaks.
Referring to fig. 1 and 2, the battery leakage detecting apparatus includes a positioning ring 10, an indicator 20 and a buffer 30.
The positioning ring 10 is annular, and the positioning ring 10 is used for sleeving the positive electrode of the battery. Specifically, the positive electrode is sleeved outside the battery core and can be positioned on one side of the rolling groove, which faces the enrichment direction. After the positioning ring 10 is sleeved on the positive electrode of the battery, the inner ring surface of the positioning ring can be tightly attached to the side wall of the battery cell.
The positioning ring 10 may be a complete ring structure to improve the structural stability. The retaining ring 10 may also have a cutout where the retaining ring 10 may be opened to accommodate batteries of different outer diameters.
Referring to fig. 2, the indicator 20 includes a connecting portion 21 connected to the positioning ring 10 and an indicating portion 22 connected to the connecting portion 21 and exposed outside the positioning ring 10.
The connecting portion 21 is used to connect the indicating portion 22 to the positioning ring 10. When the positioning ring 10 is sleeved on the positive electrode of the battery, the indicating part 22 can be contacted with the battery and cover the rolling groove. Wherein, the connecting portion 21 can be attached to the inner annular surface of the positioning ring 10.
After battery package accomplishes, before the mantle, can cup joint this battery weeping detection device's holding ring 10 in the battery anodal, and closely laminate with electric core, so that indicator 20 laminates in the battery lateral wall, if the battery is at the rolling slot department weeping, then the instruction portion 22 can be soaked to liquid, the color-changing reaction takes place after the contact weeping in instruction portion 22, thereby instruct this battery weeping, detection personnel just can judge whether the weeping of this battery through the condition of discolouring of observing instruction portion 22 like this, automatic detection has been realized, do not need naked eye identification, the qualification rate has been improved, the invalid work that the naked eye detection brought after having reduced the mantle.
In one embodiment, the positioning ring 10 is a rigid positioning ring 10 to provide sufficient support for the battery leakage detection device. Thus, the positioning ring 10 is convenient to be clamped by a manipulator, and meanwhile, when the positioning ring 10 is sleeved on the positive pole of the battery, the positioning ring 10 is stable relative to the position of the battery, so that the indicator 20 is tightly abutted to the side wall of the positive pole of the battery. Wherein, the rigid material can be a metal material.
In one embodiment, when the positioning ring 10 has a gap, the positioning ring 10 can also have a certain elasticity and can be elastically deformed to adapt to batteries with different diameters and can elastically abut against the side wall of the positive electrode of the battery, so as to ensure that the indicator 20 tightly abuts against the side wall of the positive electrode of the battery.
In one embodiment, referring to fig. 1 and 2, the indicator 22 protrudes from the positioning ring 10 on one side in the extending direction of the central axis thereof. Thus, the indication portion 22 is dislocated from the positioning ring 10, so that the detection personnel can observe the color change of the indication portion 22 and avoid being shielded by the positioning ring 10.
If the positioning ring 10 is sleeved between the rolling groove of the battery anode and the cathode, the indication part 22 protruding out of the positioning ring 10 can cover the rolling groove so as to contact the leakage at the rolling groove.
If the positioning ring 10 is sleeved on the rolling groove, the connecting portion 21 may contact the leakage at the rolling groove, and the leakage continuously infiltrates the connecting portion 21 and may spread to the indicating portion 22. Since the indicator portion 22 does not completely overlap the positioning ring 10, the color change of the indicator portion 22 can be easily observed.
In one embodiment, the indicator 22 may be a strip, but the strip may not fit snugly against the cell sidewall.
In one embodiment, the indicator 22 is annular and fits the positive electrode of the battery, as shown in fig. 3. When the positioning ring 10 is sleeved on the battery anode, the indicating part 22 is also sleeved on the battery anode, and the indicating part 22 is tightly attached to the battery side wall.
In this case, the connecting portion 21 may be annularly connected to the inner annular surface of the positioning ring 10, and the edge of the indicating portion 22 may circumferentially abut against the edge of the connecting portion 21, so as to improve the stability of connection between the connecting portion 21 and the indicating portion 22 and facilitate the processing.
Wherein the width of the positioning ring 10 in the direction of extension of its central axis is smaller than the width of the indicator 20 in the direction of extension of its central axis, so that the indicator 22 protrudes to one side of the positioning ring 10. Preferably, when the positioning ring 10 is sleeved on the positive electrode of the battery, the indicating part 22 can cover the side wall of the battery between the positioning ring 10 and the end face of the positive electrode of the battery to ensure that the rolling groove is covered and sufficient contact with leaked liquid is ensured.
In one embodiment, the indicating portion 22 may be in a cover shape, and when the positioning ring 10 is sleeved on the battery positive electrode, the indicating portion 22 covers a cap of the battery positive electrode to cover the top of the battery positive electrode, so as to prevent the battery leakage from being undetected.
Optionally, referring to fig. 3, the indicating portion 22 includes an annular indicating ring and a sealing cover for sealing one end opening of the indicating ring, and an edge of the other end opening of the indicating ring is connected to the connecting portion 21 of the indicating member 20. Thus, the indication part 22 forms a tubular structure with one end sealed, and when the positioning ring 10 is sleeved on the battery anode, the sealing cover can be abutted against the end face of the battery anode or the stem on the battery anode.
Preferably, the sealing cover can be matched with the end face of the battery anode and has a protruding structure matched with the core column, so that when the positioning ring 10 is sleeved on the battery anode, the sealing cover can be matched and attached to the end face of the battery anode to be in full contact with the end face of the battery anode, and liquid leakage on the end face of the battery anode can be detected conveniently.
Optionally, the sealing cover can limit the installation of the battery leakage detection device on the battery anode, and when the sealing cover abuts against the end face of the battery anode, the positioning ring 10 reaches the installation end point, so that the positioning ring 10 is prevented from being close to the battery cathode in a transition manner, and the detection of the indicating part 22 is prevented from being influenced.
In one embodiment, referring to fig. 2, the indicator portion 22 is integrally formed with the connecting portion 21 to facilitate the manufacturing and assembly of the positioning ring 10, and to improve the structural strength of the indicator 20. The connecting part 21 and the indicating part 22 can be made of the same material, so that the connecting part 21 can absorb leakage liquid and the leakage liquid can be soaked into the indicating part 22 for observation, and the detection range of the indicating piece 20 is enlarged.
The indication part 22 can be made of flexible materials, so that the indication part 22 can be flexibly deformed, and can be deformed according to the specific structure and shape of the battery anode in use, thereby improving the applicability of the indication piece 20 and reducing the risk of breaking the indication piece 20.
Wherein, the flexible material can be paper material, and also can be textile material, such as cotton cloth.
As one example, the indicating portion 22 is an indicating portion 22 containing an acid-base indicator. The acid-base indicator may be one or more of methyl red, bromocresol green, thymol blue, and phenolphthalein, and the electrolyte in the lithium ion battery is acidic, so that when the leakage contacts the indicator 22, the indicator 22 undergoes an acidic color change reaction.
Optionally, the indicator 22 is an indicator 22 made of pH paper. Three indicators of methyl red, bromocresol green and thymol blue are arranged on the pH test paper. The pH test paper on the market is a ready-made finished product, so that the pH test paper can be directly used for processing the battery leakage detection device, the cost is saved, and the detection effect is easy to judge. When the indicator 22 contacts the leakage, the indicator 22 is displayed in orange or red.
In the present embodiment, the indicator 22 and the connecting portion 21 are made of pH paper and are integrally formed.
Because the machining tolerance exists, the battery leakage detection device cannot be adapted to the battery positive electrode, and therefore, referring to fig. 2 and 3, the battery leakage detection device further includes a buffer member 30, and the buffer member 30 has elasticity and is located inside the connection portion 21 to elastically abut against the battery positive electrode. Therefore, the positioning ring 10 is elastically sleeved on the battery anode through the buffer member 30, and meanwhile, the friction force between the buffer member 30 and the side wall of the battery anode is large, so that the positioning of the battery leakage detection device is convenient to realize.
The buffer member 30 may be formed by a plurality of pieces spaced apart from each other only inside the connecting portion 21, so that the positioning ring 10 can be indirectly elastically abutted against the side wall of the battery positive electrode.
In the present embodiment, referring to fig. 3, the buffer member 30 is annular and is circumferentially disposed on the inner annular surface of the connecting portion 21 to prevent a gap from being left between the battery leakage detection device and the sidewall of the battery positive electrode.
It should be noted that the thickness of the buffer 30 is very thin, and after the positioning ring 10 is sleeved on the battery positive electrode, the buffer 30 is compressed to be thinner, so that the interference between the indicating part 22 and the side wall of the battery positive electrode is not affected.
In this embodiment, the buffer member 30 is a sponge, and the sponge can absorb the leaking liquid, and the absorbed leaking liquid can infiltrate the connection portion 21 along the sponge and then infiltrate the indication portion 22 along the connection portion 21, so that the indication portion 22 contacts the leaking liquid, the infiltration of the leaking liquid to the indication portion 22 can be ensured, and the blocking effect of the buffer member 30 is reduced.
An embodiment of the utility model provides a battery production line, including the battery weeping detection device that each above-mentioned embodiment provided. The battery leakage detection device has the same structural features as the battery leakage detection devices in the above embodiments, and the functions thereof are the same, which are not described herein again.
The battery production line further comprises identification means for identifying a color change of the indicator member 20. Wherein the identification means may be an industrial camera, such as a CCD camera.
The battery seals at the production process, carries out the anodal sealing of battery at first, then washs the battery outside and dries, grasps battery weeping detection device through the manipulator to from this battery weeping detection device of battery positive terminal cover. Then the battery gets into negative pressure device from the material way, and negative pressure device can carry out the evacuation to battery weeping detection device, and the electricity core is inside at the negative pressure state this moment, if seal not up to standard, then the inside electrolyte of electricity core overflows, forms the weeping. After the battery is vacuumized, the battery is conveyed out from a material channel, the battery leakage detection device on the battery with the leakage condition changes color due to the acidity of the leakage, the battery is classified into an NG grade after the battery is identified by the identification device, and the battery without leakage is a good product. The battery leakage detection device on the good-product battery is taken off through the manipulator, and the good-product battery enters the next procedure.
The battery production line can rapidly screen out the leakage batteries, and avoid damage and loss caused by battery leakage and shipment.
The foregoing is considered as illustrative only of the preferred embodiments of the invention, and not as limiting the scope of the invention in any way. Any modifications, equivalents and improvements made within the spirit and principles of the invention and other embodiments of the invention without the creative effort of those skilled in the art are intended to be included within the protection scope of the invention.
Claims (10)
1. A battery leakage detection device for connecting a battery anode, comprising:
the positioning ring is annular and is used for sleeving the battery anode;
the indicating part comprises a connecting part connected with the positioning ring and an indicating part connected with the connecting part and exposed outside the positioning ring, and the indicating part can generate a color change reaction after contacting with the leakage of the battery anode.
2. The battery leak detection device of claim 1, wherein the retaining ring is a rigid retaining ring.
3. The battery leakage detection apparatus of claim 1 wherein said indicator portion projects from said positioning ring on one side thereof in the direction of extension of the central axis thereof.
4. The battery leakage detection device according to claim 1, wherein the indicator is an indicator containing an acid-base indicator.
5. The battery leakage detection apparatus of claim 4, wherein the indicator is an indicator made of pH paper.
6. The battery leakage detection apparatus of claim 1, wherein the indicator portion is integrally formed with the connection portion.
7. The battery leakage detection device of claim 1, wherein the indicator is in the shape of a cover and covers the top of the positive electrode of the battery, and the connecting portion is annularly disposed on the edge of the indicator and annularly connected to the inner annular surface of the positioning ring.
8. The battery leakage detection device according to any one of claims 1 to 7, further comprising a buffer member having elasticity and located inside the connection portion so as to elastically abut against the positive electrode of the battery.
9. The battery leakage detection apparatus of claim 8 wherein said buffer member is a sponge.
10. A battery production line, characterized by comprising an identification device for identifying a color change of the indicator member and a battery leakage detecting device according to any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221209725.8U CN217542266U (en) | 2022-05-19 | 2022-05-19 | Battery leakage detection device and battery production line |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221209725.8U CN217542266U (en) | 2022-05-19 | 2022-05-19 | Battery leakage detection device and battery production line |
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| CN217542266U true CN217542266U (en) | 2022-10-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115493768A (en) * | 2022-11-15 | 2022-12-20 | 湖南三湘银行股份有限公司 | Insulating pad detection processing device for monitoring storage battery of data machine room |
-
2022
- 2022-05-19 CN CN202221209725.8U patent/CN217542266U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115493768A (en) * | 2022-11-15 | 2022-12-20 | 湖南三湘银行股份有限公司 | Insulating pad detection processing device for monitoring storage battery of data machine room |
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