CN111060262A - Sealing performance detection device and battery sealing performance detection method - Google Patents
Sealing performance detection device and battery sealing performance detection method Download PDFInfo
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- CN111060262A CN111060262A CN201911397945.0A CN201911397945A CN111060262A CN 111060262 A CN111060262 A CN 111060262A CN 201911397945 A CN201911397945 A CN 201911397945A CN 111060262 A CN111060262 A CN 111060262A
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- 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
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
Abstract
The application provides a sealing performance detection device and a battery sealing performance detection method. The sealing performance detection device includes: the sealing device comprises a cover body, a sealing element arranged in the cover body and a first connecting driving element for driving the sealing element to move. When the tightness detection device disclosed by the invention is used for detecting the tightness of the battery, the liquid injection hole of the battery is sealed by the sealing element when the cover body is vacuumized, so that the phenomenon that the inner cavity of the battery is vacuumized during vacuumization is prevented, and the problem that the traditional tightness detection device is easy to misjudge when the tightness of the battery is detected is solved.
Description
Technical Field
The invention relates to the field of detection equipment, in particular to a tightness detection device and a battery tightness detection method.
Background
The sealability of the battery is a critical parameter of the battery. Failure of the cell seal may lead to corrosion, short circuits, fire and even explosion risks of the cell. Therefore, the detection of the sealing performance after the sealing of the battery is an extremely important detection process in the production and manufacture of the battery.
The traditional battery tightness detection method adopts a differential pressure type detection method. Fig. 1 is a schematic diagram illustrating a conventional tightness test device 100 for performing tightness test on a battery 200. The detection device 100 is a cavity structure. During detection, the battery 200 is firstly placed in the sealed cavity 120 of the detection device 100, and the cavity 120 is pumped to a vacuum state through the detection port 110 on the detection device 100 by adopting the vacuum pumping and monitoring equipment 400; after the interior of the cavity 120 reaches the target vacuum degree, the vacuum pumping is stopped; after waiting for a period of time, the vacuum degree in the chamber 120 is detected by the vacuum pumping and monitoring device 400; if the vacuum level in the chamber 120 continues to decrease, it can be determined that the battery 200 leaks.
The above detection process has a problem: for a battery 200 with a high degree of poor sealing, the inner cavity of the battery 200 is completely communicated with the cavity 120 of the detection device 100. During the evacuation of the chamber 120, the inner cavity of the battery 200 is simultaneously evacuated to a vacuum state. When the vacuum degree in the cavity 120 is detected after the vacuumizing is stopped, the vacuum degree in the cavity 120 is not changed; the battery 200 is determined to be good, which results in erroneous determination of the sealing property.
Therefore, it is necessary to design a sealing performance detection device to solve the problem that the conventional sealing performance detection device is prone to erroneous judgment when detecting the sealing performance of the battery.
Disclosure of Invention
In order to solve the technical problem that the sealing performance of the battery detected by the traditional sealing performance detection device is easy to misjudge, the invention discloses a sealing performance detection device, which comprises: the first accommodating cavity is configured to form a closed space with a first target area of the piece to be detected through the first opening; the sealing piece is positioned in the first accommodating cavity and is configured to seal a second target area of the to-be-detected piece; the first driving connecting piece is fixedly connected to the inner wall of the cover body and is configured to drive the sealing piece to move.
In some embodiments, the first drive connection comprises: the sealing device comprises a first driving piece and a first connecting piece, one end of the first connecting piece is fixedly connected to the inner wall of the cover body, the other end of the first connecting piece is connected with the sealing piece, and the first driving piece can drive the first connecting piece and drive the sealing piece to move.
In some embodiments, the seal further comprises: one end of the sealing block is fixedly connected to the first connecting piece; and the sealing gasket is arranged at the other end of the sealing block and acts on a second target area of the piece to be detected together with the sealing block.
In some embodiments, the first driving member can drive the first connecting member and move the sealing member includes: the first driving piece drives the sealing block to face or be away from a second target area of the piece to be detected.
In some embodiments, the tightness detection device further comprises: and the detection port is arranged on the cover body and is configured to be connected with vacuum extraction and monitoring equipment.
In some embodiments, the tightness detection device further comprises: and the sealing ring is arranged on the contact surface of the cover body and the first target area of the piece to be detected.
The application also discloses a battery tightness detection method, which comprises the following steps: by adopting the tightness detection device disclosed by the application, one surface of the cover body with the first opening is sealed with the first target area of the battery, the first target area comprises the liquid injection hole of the battery, and the first driving piece drives the sealing piece to seal the liquid injection hole of the battery; vacuumizing the first accommodating cavity, and sealing the first accommodating cavity; the first driving piece drives the sealing piece to remove the sealing of the liquid injection hole of the battery; and detecting the change of the vacuum degree in the first accommodating cavity, and judging the tightness of the battery according to the change of the vacuum degree.
In some embodiments, the detecting the vacuum degree in the first accommodating cavity and determining the battery tightness according to the change of the vacuum degree includes: standing for a preset time; detecting the vacuum degree in the first accommodating cavity; and judging the tightness of the battery according to the change of the vacuum degree.
In some embodiments, the first accommodating cavity is vacuumized through a detection port on the cover body and a vacuum pumping and monitoring device connected to the detection port, and the first accommodating cavity is closed through closing the detection port.
In some embodiments, the vacuum degree in the first accommodating cavity is detected through the detection port.
In conclusion, by adopting the tightness detection device and the battery tightness detection method, when the cover body is vacuumized, the liquid injection hole of the battery is sealed by the sealing element, so that the phenomenon that the inner cavity of the battery is vacuumized during vacuumization is prevented, and the problem that the traditional tightness detection device is easy to misjudge when detecting the tightness of the battery is solved.
Drawings
Fig. 1 is a schematic view illustrating a conventional sealability testing apparatus for testing the sealability of a battery;
FIG. 2 shows a schematic view of a first target area and a second target area on an object to be inspected; and
fig. 3A, 3B and 3C are schematic diagrams illustrating a detection process of a sealing performance detection apparatus according to an embodiment of the present application.
Detailed Description
The following description is presented to enable any person skilled in the art to make and use the invention, and is provided in the context of a particular application and its requirements. Various local modifications to the disclosed embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments and applications without departing from the spirit and scope of the present disclosure. Thus, the present disclosure is not to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the claims.
The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting.
These and other features of the present disclosure, as well as the operation and function of the related elements of the structure, and the combination of parts and economies of manufacture, may be particularly improved upon in view of the following description. All of which form a part of the present disclosure, with reference to the accompanying drawings. It is to be expressly understood, however, that the drawings are for the purpose of illustration and description only and are not intended as a definition of the limits of the disclosure.
The following description may significantly improve these and other features of the disclosure, as well as the operation and function of the related elements of the structure, and the economic efficiency of assembly and manufacture. All of which form a part of the present disclosure with reference to the accompanying drawings. It is to be expressly understood, however, that the drawings are for the purpose of illustration and description only and are not intended as a definition of the limits of the disclosure. It should also be understood that the drawings are not drawn to scale.
The flow diagrams used in this disclosure illustrate system-implemented operations according to some embodiments of the disclosure. It should be clearly understood that the operations of the flow diagrams may be performed out of order. Rather, the operations may be performed in reverse order or simultaneously. In addition, one or more other operations may be added to the flowchart. One or more operations may be removed from the flowchart.
The invention discloses a sealing performance detection device. Fig. 3A, 3B and 3C are schematic diagrams illustrating a detection process of a sealing performance detection apparatus 300 according to an embodiment of the present application. Referring to fig. 3C, the sealability detection apparatus 300 includes: a housing 310, a seal 320, and a first drive connection 330. The seal 320 and the first drive connection 330 are within the housing 310.
The cover 310 includes a first receiving cavity 311. The seal 320 and the first driving connection 330 are disposed in the first receiving cavity 311.
The cover 310 also includes a first opening 312. The first opening 312 may open a portion of a bottom surface of the housing or may open a bottom surface of the housing 310. In one embodiment of the present application, the first opening 312 occupies the entire bottom surface of the housing 310, i.e., the surface that is directly applied to the first target area 210. The first opening 312 is sized to cover the first target area 210 of the battery 200.
For ease of understanding, it is necessary in the following description of the present application to make a description of "first target region", "second target region". The term "first target region" as used herein refers to a first region of the surface of the object to be detected that includes the site to be detected. The term "second target region" as used herein refers to a second region of the surface of the object to be detected that includes the site to be detected. Fig. 2 shows a schematic representation of a first target area and a second target area on an object to be examined. Referring to fig. 2, the member to be detected is a battery 200, and the portion to be detected is a liquid injection hole 230 on the battery 200. The first target area 210 is a first area of the surface of the battery 200 including the pour hole 230, that is, the pour hole 230 of the battery 200 is disposed in the first target area 210. The second target area 220 is a second area on the surface of the battery 200 including the pour hole 230, that is, the pour hole 230 of the battery 200 is also disposed in the second target area 220, however, the first target area 210 should cover an area larger than the second target area.
The shape of the first target area 210 and the second target area 220 is related to the shape of the surface of the object to be detected. For example, when the to-be-detected piece is a cylindrical wound battery, the first target region and the second target region are one curved region on a cylindrical surface of the wound battery. When the piece to be detected is a prismatic aluminum cell, the first target area 210 and the second target area 220 are one flat area on the surface of the end cap of the prismatic aluminum cell.
Referring to fig. 2 and 3C, the shape of the first opening 312 corresponds to the shape of the first target area 210, so that the cover 310 provided with the first opening 312 can completely cover the area of the object to be detected (the battery 200) including the part to be detected (the liquid injection hole 230).
When the first opening 312 covers the first target area 210 of the battery 200, the cover 310 forms a closed space (a sealed first receiving cavity 311) with the first target area 210 of the battery 200; that is, the first receiving cavity 311 is closed by the first target region 210 of the battery surface. Since the pour spout 230 is disposed within the first target area 210, the opening 231 of the pour spout 230 is within the first receiving cavity 311.
When the tightness test is performed, firstly, air in a sealed space formed by the cover body 310 and the first target area 210 of the battery 200 is sucked out to be in a vacuum state, if the battery 200 is not completely sealed, gas in the battery 200 can diffuse into the sealed space under the action of pressure, and the change of the vacuum degree in the sealed cavity can be detected through a vacuum meter arranged in the detection port 313, wherein the change value of the vacuum degree is the leakage value of the battery. The incomplete sealing may include battery leakage, poor sealing of the pour hole 230, or poor sealing of the opening 231.
The cover 310 may further include a detection port 313. The detection port 313 may be used to connect to the vacuum extraction and monitoring apparatus 400. The vacuum pumping and monitoring device 400 may pump a vacuum to the battery 200 through the sensing port 313. The vacuum pumping and monitoring device 400 includes, for example, a vacuum gauge disposed in the detection port 313, and the vacuum gauge can also detect the vacuum degree of the battery 200 through the detection port 313. The vacuum extraction and monitoring device 400 also includes a vacuum level monitoring device sealingly connected to the detection chamber 313, which may be located outside the chamber. Before the leak test is performed by the vacuum pumping and monitoring apparatus 400, the test port 313 is closed to ensure that the enclosed space does not leak air. In some embodiments, the detection port 313 may be a valve cartridge with a self-sealing function.
A sealing ring 314 may also be provided on the cover 310. The sealing ring 314 functions to enhance the sealing performance of the sealed space during the sealing performance test. A sealing ring 314 may be disposed on the interface of the housing 310 and the first target area 210 of the battery 200. In some embodiments, a sealing ring 314 may be disposed over the first opening 312 of the cover 310; for example, a seal groove may be provided at the first opening 312, and the sealing ring 314 may be installed in the seal groove; in particular, the seal 314 may be an O-ring seal. In some embodiments, the sealing ring 314 may be a sealing coating applied over the first opening 312. In some embodiments, the sealing ring 314 may be integrally designed with the housing 310; for example, cover 310 is a composite of injection molded and metal; the part with the detection port 313 at the upper end is made of metal; the portion with the first opening 312 at the lower end is made of plastic material to provide better sealing performance.
The seal 320 may include a seal block 321. The sealing block 321 is configured to seal the pour hole 230 of the battery 200. The sealing block 321 may be a block-shaped solid structure. The sealing block 321 may also be a receiving cavity structure with only one opening. When the sealing block 321 is a receiving chamber structure with a single opening, the single opening is used to close the opening 231 of the pour hole 230. One end of the sealing block 321 is fixedly connected to the first driving connection member 330.
The sealing block 321 can be moved in a target direction by the first driving connection 330 to close the opening 231 of the pour hole 230. When the sealing block 321 closes the opening 231 of the liquid filling hole 230, no gas leaks from the opening 231. The sealing block 321 can also be driven by the first driving connection 330 to move along the direction opposite to the target direction to release the sealing of the opening 231 of the liquid filling hole 230. The target direction is a direction in which the opening 231 of the pour hole 230 can be closed. For example, when the member 200 to be detected is a square aluminum-shell battery, the target direction may be a direction perpendicular to the surface of the battery cover plate and from the outside of the liquid injection hole to the inside of the liquid injection hole, or the target direction may be a direction parallel to the surface of the battery cover plate and from the edge of the cover plate to the axis of the liquid injection hole.
Referring to fig. 3B, before the first receiving cavity 311 is evacuated by the vacuum pumping and monitoring device 400, the first driving connection member 330 drives the sealing member 320 to close the liquid injection hole 230, so as to prevent the liquid injection hole 230 from leaking into the first receiving cavity 311, thereby avoiding the situation that the interior of the battery 200 is pumped to vacuum by mistake in the conventional detection method, and improving the detection accuracy.
The seal 320 may also include a gasket 322. A packing 322 is provided at the other end of the sealing block 321. The sealing gasket 322 cooperates with the sealing block 321 in the second target area 220 of the object 200 to be tested to enhance the sealing effect. A gasket 322 may be disposed on the interface of the sealing block 321 and the second target area 220 of the cell 200. In some embodiments, the gasket 322 may be disposed on the sealing block 321; for example, a sealing groove may be provided on the sealing block 321, and the sealing pad 322 may be installed in the sealing groove; in particular, the gasket 322 may be an O-ring seal. In some embodiments, the gasket 322 may be a seal coating applied to the seal block 321. In some embodiments, the gasket 322 may be integrally designed with the sealing block 321.
The first driving connecting member 330 has one end fixedly coupled to the inner wall of the housing 310 and the other end coupled to the sealing member 320. The first drive connection 330 is configured to move the seal 320. The first drive connection 330 may include a first driver 331 and a first connection 332. The first connector 332 has one end fixedly connected to the inner wall of the housing 310 and the other end connected to the sealing member 320. The first driving member 331 drives the first connecting member 332 to further drive the sealing member 320. As an example, the first driver 331 may be a linear motor. By way of example, the first drive member 331 may drive the seal 320 toward or away from the pour spout 230 of the battery 200.
The application also discloses a sealing performance detection method. The tightness detection method comprises the following steps: by adopting the tightness detection device disclosed by the application, one surface of the cover body with the first opening is sealed with the first target area of the piece to be detected, the first target area comprises a liquid injection hole of a battery, and the first driving piece drives the sealing piece to seal the liquid injection hole of the battery; vacuumizing the first accommodating cavity, and sealing the first accommodating cavity; the first driving piece drives the sealing piece to remove the sealing of the liquid injection hole of the battery; and detecting the change of the vacuum degree in the first accommodating cavity, and judging the tightness of the battery according to the change of the vacuum degree.
In some embodiments, the detecting the vacuum degree in the first accommodating cavity and determining the battery tightness according to the change of the vacuum degree includes: standing for a preset time; detecting the vacuum degree in the first accommodating cavity; and judging the tightness of the battery according to the change of the vacuum degree.
In some embodiments, the first accommodating cavity is vacuumized through a detection port on the cover body and a vacuum pumping and monitoring device connected to the detection port, and the first accommodating cavity is closed through closing the detection port.
In some embodiments, the vacuum degree in the first accommodating cavity is detected through the detection port.
Referring to fig. 3A, the whole of the tightness detection device 300 is moved downward to cover the first opening 312 of the tightness detection device 300 on the area of the battery 200 including the liquid inlet 230; the first drive connection 330 drives the sealing member 320 toward the pour spout 230 and seals the pour spout 230 of the battery 200. Referring to fig. 3B, the vacuum pumping and monitoring device 400 pumps the first receiving cavity 311 to vacuum through the detection port 313. Referring to FIG. 3C, the sealing member 320 is driven by the first driving connection member 330 to move upward to unseal the pour hole 230, and the first receiving chamber 311 is still closed. Standing for a predetermined time (for example, the predetermined time is 1 hour), if there is leakage at the liquid injection hole 230, the leaked gas will enter the first accommodating cavity 311, and the vacuum degree in the first accommodating cavity 311 will change; if there is no leakage from the liquid injection hole 230, the vacuum degree in the first receiving cavity 311 does not change. The vacuum pumping and monitoring device 400 is provided with a vacuum gauge capable of detecting the vacuum degree, the vacuum pumping and monitoring device 400 is used for detecting the vacuum degree in the first accommodating cavity 311, and a change value of the vacuum degree in a preset time is obtained; and judging the tightness of the battery according to the change value of the vacuum degree. If the change value of the vacuum degree is larger than or equal to a target threshold value, judging that the battery leaks; and if the change value of the vacuum degree is smaller than the target threshold value, judging that the battery does not leak.
In conclusion, by adopting the tightness detection device and the battery tightness detection method, when the cover body is vacuumized, the liquid injection hole of the battery is sealed by the sealing element, so that the phenomenon that the inner cavity of the battery is vacuumized during vacuumization is prevented, and the problem that the traditional tightness detection device is easy to misjudge when detecting the tightness of the battery is solved.
In conclusion, upon reading the present detailed disclosure, those skilled in the art will appreciate that the foregoing detailed disclosure can be presented by way of example only, and not limitation. Those skilled in the art will appreciate that the present application is intended to cover various reasonable variations, adaptations, and modifications of the embodiments described herein, although not explicitly described herein. Such alterations, improvements, and modifications are intended to be suggested by this disclosure, and are within the spirit and scope of the exemplary embodiments of this disclosure.
Furthermore, certain terminology has been used in this application to describe embodiments of the disclosure. For example, "one embodiment," "an embodiment," and/or "some embodiments" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present disclosure. Therefore, it is emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various portions of this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined as suitable in one or more embodiments of the disclosure.
It should be appreciated that in the foregoing description of embodiments of the disclosure, various features are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure aiding in the understanding of the subject disclosure. Alternatively, various features may be dispersed throughout several embodiments of the application. This is not to be taken as an admission that any of the features of the claims are essential, and it is fully possible for a person skilled in the art to extract some of them as separate embodiments when reading the present application. That is, embodiments in the present application may also be understood as an integration of multiple sub-embodiments. And each sub-embodiment described herein is equally applicable to less than all features of a single foregoing disclosed embodiment.
In some embodiments, numbers expressing quantities or properties used to describe and claim certain embodiments of the application are to be understood as being modified in certain instances by the term "about", "approximately" or "substantially". For example, "about," "approximately," or "substantially" can mean a ± 20% variation of the value it describes, unless otherwise specified. Accordingly, in some embodiments, the numerical parameters set forth in the written description and attached claims are approximations that may vary depending upon the desired properties sought to be obtained by a particular embodiment. In some embodiments, numerical parameters should be construed in light of the number of reported significant digits and by applying ordinary rounding techniques. Notwithstanding that the numerical ranges and parameters setting forth the broad scope of the embodiments of the application are approximations, the numerical values set forth in the specific examples are reported as precisely as possible.
Each patent, patent application, publication of a patent application, and other material, such as articles, books, descriptions, publications, documents, articles, and the like, cited herein is hereby incorporated by reference. All matters hithertofore set forth herein except as related to any prosecution history, may be inconsistent or conflicting with this document or any prosecution history which may have a limiting effect on the broadest scope of the claims. Now or later associated with this document. For example, if there is any inconsistency or conflict in the description, definition, and/or use of terms associated with any of the included materials with respect to the terms, descriptions, definitions, and/or uses associated with this document, the terms in this document are used.
Finally, it should be understood that the embodiments of the application disclosed herein are illustrative of the principles of the embodiments of the present application. Other modified embodiments are also within the scope of the present application. Accordingly, the disclosed embodiments are presented by way of example only, and not limitation. Those skilled in the art may implement the present application in alternative configurations according to the embodiments of the present application. Thus, embodiments of the present application are not limited to those embodiments described with precision in the application.
Claims (10)
1. A leak detection apparatus, comprising:
the first accommodating cavity is configured to form a closed space with a first target area of the piece to be detected through the first opening;
the sealing piece is positioned in the first accommodating cavity and is configured to seal a second target area of the to-be-detected piece;
the first driving connecting piece is fixedly connected to the inner wall of the cover body and is configured to drive the sealing piece to move.
2. The leak detection apparatus of claim 1, wherein the first drive connection comprises: the sealing device comprises a first driving piece and a first connecting piece, one end of the first connecting piece is fixedly connected to the inner wall of the cover body, the other end of the first connecting piece is connected with the sealing piece, and the first driving piece can drive the first connecting piece and drive the sealing piece to move.
3. The leak detection apparatus as defined in claim 2, wherein the seal further comprises:
one end of the sealing block is fixedly connected to the first connecting piece;
and the sealing gasket is arranged at the other end of the sealing block and acts on a second target area of the piece to be detected together with the sealing block.
4. The leak testing apparatus of claim 3 wherein said first driving member is adapted to drive said first connecting member and move said sealing member, and wherein said first driving member comprises:
the first driving piece drives the sealing block to face or be away from a second target area of the piece to be detected.
5. The leak detection apparatus as defined in claim 1, further comprising:
and the detection port is arranged on the cover body and is configured to be connected with vacuum extraction and monitoring equipment.
6. The leak detection apparatus as defined in claim 1, further comprising:
and the sealing ring is arranged on the contact surface of the cover body and the first target area of the piece to be detected.
7. A battery sealability detection method comprising: with the sealing performance test apparatus according to any one of claims 1 to 6,
sealing one surface of the cover body with a first opening with a first target area of a battery, wherein the first target area comprises a liquid injection hole of the battery, and a first driving piece drives the sealing piece to seal the liquid injection hole of the battery;
vacuumizing the first accommodating cavity, and sealing the first accommodating cavity;
the first driving piece drives the sealing piece to remove the sealing of the liquid injection hole of the battery;
and detecting the vacuum degree in the first accommodating cavity, and judging the tightness of the battery according to the change of the vacuum degree.
8. The method for detecting the tightness of the battery according to claim 7, wherein the detecting the degree of vacuum in the first accommodating cavity and the determining the tightness of the battery according to the change of the degree of vacuum comprises:
standing for a preset time;
detecting the vacuum degree in the first accommodating cavity;
and judging the tightness of the battery according to the change of the vacuum degree.
9. The method for testing the sealability of claim 7, wherein the first accommodating cavity is vacuumed through a testing port on the cover body and a vacuum pumping and monitoring device connected to the testing port, and the first accommodating cavity is closed by closing the testing port.
10. The method for detecting the sealability of claim 7, wherein the degree of vacuum in the first accommodating chamber is detected through the detection port.
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| CN201911397945.0A CN111060262A (en) | 2019-12-30 | 2019-12-30 | Sealing performance detection device and battery sealing performance detection method |
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| CN201911397945.0A CN111060262A (en) | 2019-12-30 | 2019-12-30 | Sealing performance detection device and battery sealing performance detection method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113188727A (en) * | 2021-04-08 | 2021-07-30 | 苏州领湃新能源科技有限公司 | Novel tool and method for detecting positive pressure tightness after nail pressing of lithium battery |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113188727A (en) * | 2021-04-08 | 2021-07-30 | 苏州领湃新能源科技有限公司 | Novel tool and method for detecting positive pressure tightness after nail pressing of lithium battery |
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Effective date of registration: 20200409 Address after: 621100 chuangcheng New District, Zizhou, Santai County, Mianyang City, Sichuan Province Applicant after: Sichuan xinminya Battery Technology Co.,Ltd. Applicant after: Suzhou Lingwei New Energy Technology Co.,Ltd. Applicant after: Hunan xinminya New Energy Technology Co.,Ltd. Address before: 621100 chuangcheng New District, Zizhou, Santai County, Mianyang City, Sichuan Province Applicant before: Sichuan xinminya Battery Technology Co.,Ltd. Applicant before: Lingpa new energy technology (Shanghai) Co.,Ltd. Applicant before: Hunan xinminya New Energy Technology Co.,Ltd. Applicant before: Shanxi KONOS New Energy Technology Co.,Ltd. |
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Effective date of registration: 20230519 Address after: 421681 Jinwei Road, Guiyang Industrial Park, Qidong County, Hengyang City, Hunan Province Applicant after: Hunan lingpaidazhi Technology Co.,Ltd. Applicant after: Hunan Lingpai New Energy Technology Co.,Ltd. Applicant after: Hengyang Lingpai New Energy Technology Co.,Ltd. Applicant after: Hunan Lingpai New Energy Research Institute Co.,Ltd. Applicant after: Hunan Lingpai Energy Storage Technology Co.,Ltd. Address before: 421600 Jinwei Road, Guiyang Industrial Park, Qidong County, Hengyang City, Hunan Province Applicant before: Hunan lingpaidazhi Technology Co.,Ltd. Applicant before: Hunan Lingpai New Energy Technology Co.,Ltd. Applicant before: Hengyang Lingpai New Energy Technology Co.,Ltd. Applicant before: Suzhou Lingpai New Energy Technology Co.,Ltd. Applicant before: Hunan Lingpai Dingxin Battery Research Institute Co.,Ltd. |
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