CN116148684A - Electric core thermal runaway testing arrangement - Google Patents
Electric core thermal runaway testing arrangement Download PDFInfo
- Publication number
- CN116148684A CN116148684A CN202111375670.8A CN202111375670A CN116148684A CN 116148684 A CN116148684 A CN 116148684A CN 202111375670 A CN202111375670 A CN 202111375670A CN 116148684 A CN116148684 A CN 116148684A
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- CN
- China
- Prior art keywords
- thermal runaway
- sealing
- cell thermal
- testing device
- runaway testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
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- 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
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- General Physics & Mathematics (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention relates to the technical field of battery testing, in particular to a battery cell thermal runaway testing device. The invention provides a battery cell thermal runaway testing device which comprises a shell, a cover plate and a visual panel, wherein the shell is of an integrated structure, a taking and placing opening and an observing opening are formed in the shell, the cover plate can be used for sealing the taking and placing opening in a detachable mode, and the visual panel is used for sealing the observing opening. The device directly carries out integrated design preparation with electric core thermal runaway's casing space, reduces the welding and through sealing conditions such as screw fixation to reduce the risk of gas leakage when testing, ensure that the instantaneous gas production and the total gas production value that obtain when electric core thermal runaway are accurate, help us to the difference to initiate thermal runaway condition and the accurate understanding of thermal runaway under the electric core state, and provide accurate temperature, parameter such as flue gas be convenient for engineer's research and analysis. In addition, engineers may observe the process of cell thermal runaway through the visualization panel in order for the engineers to better understand the process of cell thermal runaway.
Description
Technical Field
The invention relates to the technical field of battery testing, in particular to a battery cell thermal runaway testing device.
Background
With the development of new energy automobiles and the strong support of the country to the industry, various electric automobiles gradually replace the traditional fuel automobiles. The lithium battery is widely used in automobile power battery packs due to the advantages of high power and energy density, long service life and the like. The most dangerous situation of the lithium battery is that thermal runaway occurs, a large amount of poisonous and high-temperature gas can be released by the thermal runaway, and a large amount of heat is transferred to the adjacent battery cells, so that the thermal runaway of other battery cells is initiated, and finally the thermal runaway, the fire and the explosion of the whole battery pack are caused, so that the safety of people is endangered. In order to better control the thermal runaway of the battery pack, firstly, the behavior of single-cell thermal runaway needs to be studied, and the characteristics of heating, gas production and the like are examined, and a specific cell thermal runaway testing device is needed for the study. The device can realize sealing, and thermocouple, pressure sensor, exhaust pipe, etc. are arranged in the device.
The box body of the traditional battery cell thermal runaway testing device is more assembled box bodies, each plate is fixed and sealed by welding or screws, and the more the parts are spliced, the easier the battery cell leaks air in the thermal runaway moment. The obtained gas yield of the thermal runaway of the battery cell is reduced, the temperature is reduced, the accurate understanding of the thermal runaway of the battery cell is not facilitated, and the instantaneous gas yield and the total gas yield of the smoke generated during the thermal runaway of the battery cell are difficult to directly obtain. In addition, the conventional cell testing device cannot observe the whole thermal runaway process of the cell from the early stage to the middle stage to the later stage of the thermal runaway, which is not beneficial for researchers to accurately understand the positions of sparks and flames and the states of gases during the thermal runaway of the cell.
Therefore, there is a need for a device for testing thermal runaway of a battery cell to solve the above problems.
Disclosure of Invention
The invention aims to provide a battery cell thermal runaway testing device which has high structural strength and good sealing property, can be used for conveniently observing the battery cell thermal runaway testing process and is convenient for researching the battery cell thermal runaway.
In order to achieve the above object, the following technical scheme is provided:
the invention provides a battery cell thermal runaway testing device which comprises a shell, a cover plate and a visual panel, wherein the shell is of an integrated structure, a taking and placing opening and an observing opening are formed in the shell, the cover plate is detachably used for sealing the taking and placing opening, and the visual panel is used for sealing the observing opening.
As an alternative scheme of the cell thermal runaway testing device, the taking and placing port is communicated with the observation port, a plugging groove is formed in the periphery of the observation port, and the visual panel can be inserted into the plugging groove from the connection part of the observation port and the taking and placing port.
As an alternative scheme of the electric core thermal runaway testing device, the electric core thermal runaway testing device further comprises a sealing fixing piece, a first end of the sealing fixing piece is pressed on the edge of the visual panel, which is located at the position of the taking and placing opening, a surface of a second end of the sealing fixing piece and an end face of the taking and placing opening are located on the same horizontal plane, and the cover plate sealing cover is arranged on the end face of the taking and placing opening and the surface of the second end of the sealing fixing piece.
As an alternative scheme of the cell thermal runaway testing device, a clamping groove is formed in the first end of the sealing fixing piece, and the clamping groove can be clamped with the visual panel.
As an alternative scheme of the cell thermal runaway testing device, the cell thermal runaway testing device further comprises a first sealing gasket, wherein the first sealing gasket is arranged between the visual panel and the plug-in groove; and/or
The cell thermal runaway testing device further comprises a second sealing gasket, and the second sealing gasket is arranged between the visual panel and the clamping groove.
As an alternative scheme of the cell thermal runaway testing device, the cell thermal runaway testing device further comprises a sealing element, a sealing groove is arranged at the taking and placing opening, a part of the sealing element is arranged in the sealing groove, and the sealing element is used for sealing the contact part of the cover plate and the taking and placing opening.
As an alternative scheme of the cell thermal runaway testing device, a first through hole is formed in the shell, and the first through hole is used for allowing a puncture needle to be inserted into the shell.
As an alternative scheme of the cell thermal runaway testing device, a second through hole is formed in the shell and is used for being connected with an external gas tank.
As an alternative to the cell thermal runaway testing device, the cell thermal runaway testing device further includes a liquid cooling plate detachably mounted on the housing.
As an alternative scheme of the cell thermal runaway testing device, an exhaust interface is arranged on the cover plate and used for installing a pressure release valve and an exhaust pipe.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a battery cell thermal runaway testing device which comprises a shell, a cover plate and a visual panel, wherein the shell is of an integrated structure, a taking and placing opening and an observing opening are formed in the shell, the cover plate can be used for sealing the taking and placing opening in a detachable mode, and the visual panel is used for sealing the observing opening. The device directly carries out integrated design preparation with electric core thermal runaway's casing space, reduces the welding and through sealing conditions such as screw fixation to reduce the risk of gas leakage when testing, ensure that the instantaneous gas production and the total gas production value that obtain when electric core thermal runaway are accurate, help us to the difference to initiate thermal runaway condition and the accurate understanding of thermal runaway under the electric core state, and provide accurate temperature, parameter such as flue gas be convenient for engineer's research and analysis. In addition, engineers may observe the process of cell thermal runaway through the visualization panel in order for the engineers to better understand the process of cell thermal runaway.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following description will briefly explain the drawings needed in the description of the embodiments of the present invention, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the contents of the embodiments of the present invention and these drawings without inventive effort for those skilled in the art.
FIG. 1 is a schematic diagram of a thermal runaway testing device for a battery cell according to an embodiment of the present invention;
fig. 2 is an explosion schematic diagram of a thermal runaway testing device for a battery cell according to an embodiment of the present invention.
Reference numerals:
1. a housing; 11. a taking and placing port; 12. an observation port; 13. sealing grooves; 14. a first through hole; 15. a second through hole; 16. a plug-in groove; 2. a cover plate; 21. an exhaust interface; 3. a visualization panel; 4. a sealing fixture; 41. a clamping groove; 5. and a liquid cooling plate.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; either mechanically or electrically. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1-2, the embodiment provides a device for testing thermal runaway of a battery cell, which comprises a casing 1, a cover plate 2 and a visual panel 3, wherein the casing 1 is of an integrated structure, a taking and placing port 11 and an observation port 12 are formed in the casing 1, the cover plate 2 detachably seals the taking and placing port 11, and the visual panel 3 seals the observation port 12. The device directly carries out integrated design and manufacture with electric core thermal runaway's casing 1 space, reduces welding and through sealing conditions such as screw fixation to reduce the risk of gas leakage when testing, ensure that the instantaneous gas yield and the total gas yield value that obtain when electric core thermal runaway are accurate, help us to the difference to initiate thermal runaway condition and the accurate understanding of thermal runaway under the electric core state, and provide accurate temperature, parameter such as flue gas be convenient for engineer's research and analysis. Furthermore, the engineer may observe the process of the cell thermal runaway through the visualization panel 3 so that the engineer better understands the cell thermal runaway process.
The visualization panel 3 is a transparent glass panel. Preferably specially made toughened glass. The electric core thermal runaway testing arrangement that this embodiment provided is through the combination of integral type casing 1 and toughened glass, when guaranteeing high leakproofness, high strength, high reuse nature, can observe the thermal runaway process of electric core simultaneously, can visualize lithium cell thermal runaway.
Optionally, the shell 1 adopts an integrated processing design, and through milling machine integral processing, a large amount of gas and high temperature generated in the instant of thermal runaway of the battery cell are ensured, the device can not be damaged by high pressure, and the device can be reused after cleaning.
Preferably, the electric core thermal runaway testing device can further comprise a video recording device, the whole process of recording electric core thermal runaway is shot through the visual panel 3, and meanwhile, the electric core thermal runaway phenomenon is analyzed by matching with temperature, pressure, voltage and other data recorded by the electric core thermal runaway testing device, so that the electric core thermal runaway can be studied better.
Alternatively, in order to facilitate the sealing installation of the visual panel 3 and the housing 1, the pick-and-place port 11 and the observation port 12 are communicated, the insertion groove 16 is formed on the peripheral side of the observation port 12, and the visual panel 3 can be inserted into the insertion groove 16 from the connection part of the observation port 12 and the pick-and-place port 11.
Preferably, the cell thermal runaway testing device further comprises a first sealing gasket (not shown in the figure), wherein the first sealing gasket is arranged between the visual panel 3 and the plugging groove 16 so as to ensure the sealing between the visual panel 3 and the plugging groove 16 and avoid air leakage. Of course, in other embodiments, sealant may be applied to the edge of the visual panel 3, and the visual panel 3 and the plugging slot 16 may be in sealing fit through the sealant.
Optionally, when getting and putting mouth 11 and viewing aperture 12 and being linked together, visual panel 3 installs behind viewing aperture 12, in order to make things convenient for apron 2 sealed get and put mouth 11, electric core thermal runaway testing arrangement still includes sealed mounting 4, the first end of sealed mounting 4 presses locates the edge that is located getting and puts mouth 11 department on visual panel 3, and the surface of the second end of sealed mounting 4 is located same horizontal plane with getting the terminal surface of putting mouth 11, apron 2 sealed lid is established on getting the terminal surface of putting mouth 11 and the surface of the second end of sealed mounting 4. Through the setting of sealed mounting 4, on the one hand can avoid the gas leakage problem that brings because of the installation of visual panel 3, on the other hand can be convenient for visual panel 3 sealed lid establish in getting and put mouthful 11 departments, guarantee the leakproofness of whole device, improve experimental effect.
Preferably, in order to ensure tightness between the sealing fixing piece 4 and the visual panel 3, and facilitate the matching installation of the sealing fixing piece 4 and the visual panel 3, a clamping groove 41 is formed in the first end of the sealing fixing piece 4, and the clamping groove 41 can be clamped with the visual panel 3.
In order to ensure the tightness of the device, the cell thermal runaway testing device further comprises a second sealing gasket, and the second sealing gasket is arranged between the visual panel 3 and the clamping groove 41. Of course, in other embodiments, sealant may be applied to the edge of the visual panel 3, and the visual panel 3 and the clamping groove 41 may be in sealing fit with each other through the sealant.
Further, the cell thermal runaway testing device further comprises a sealing element, a sealing groove 13 is arranged at the taking and placing opening 11, part of the sealing element is arranged in the sealing groove 13, and the sealing element is used for sealing the contact part of the cover plate 2 and the taking and placing opening 11. The sealing element can be used for ensuring the sealing of the end face of the taking and placing port 11 of the cover plate 2 and ensuring the tightness of the device.
The housing 1 is illustratively a rectangular parallelepiped structure in which two adjacent faces are missing, wherein one missing face of the rectangular parallelepiped serves as the pick-and-place port 11, and the other missing face serves as the observation port 12. In other embodiments, the housing 1 may have other shapes, and may be specifically designed according to the needs, which is not limited herein.
Illustratively, the cover plate 2 is fixedly connected with the end surface of the pick-and-place opening 11 and the surface of the first end of the sealing fixing member 4 through screws, and then a sealing member is arranged between the cover plate 2 and the end surface of the pick-and-place opening 11 so as to realize the sealing of the contact part between the cover plate 2 and the end surface of the pick-and-place opening. Alternatively, the seal may be a high temperature resistant adhesive strip.
Preferably, the housing 1 is provided with a first through hole 14, and the first through hole 14 is used for inserting a puncture needle into the housing 1. During testing, the lancet can penetrate the housing 1 through the first through hole 14 and directly penetrate the battery cell, leading to thermal runaway of the battery cell.
Preferably, the housing 1 is provided with a second through hole 15, and the second through hole 15 is used for connecting an external gas tank. The second through hole 15 is illustratively a hexagonal hole, which can be inserted into a hollow bolt and extend out of the housing 1, and is connected to an external gas tank to simulate the atmosphere.
Preferably, the cell thermal runaway testing device further comprises a liquid cooling plate 5, and the liquid cooling plate 5 is detachably mounted on the shell 1. The liquid cooling plate 5 is arranged at the bottom of the shell 1, can take away heat of the battery core, simulates actual cooling working conditions of the battery pack, and performs thermal runaway test.
Preferably, the cover plate 2 is provided with an exhaust port 21, the exhaust port 21 is used for installing a pressure release valve and an exhaust pipe, and is used for exhausting gas generated by thermal runaway of the battery cell, if a flowmeter is added in the exhaust pipe, the gas quantity and the temperature generated by the thermal runaway of the battery cell can be obtained, and the characteristics of thermal runaway of the battery cell under different SOCs and other conditions can be studied.
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.
Claims (10)
1. The utility model provides a electric core thermal runaway testing arrangement, its characterized in that, electric core thermal runaway testing arrangement includes casing (1), apron (2) and visual panel (3), casing (1) are integrated into one piece structure, offer on casing (1) and get put mouth (11) and viewing aperture (12), apron (2) detachably seal get put mouth (11), visual panel (3) are sealed viewing aperture (12).
2. The cell thermal runaway testing device according to claim 1, wherein the pick-and-place port (11) is communicated with the observation port (12), a plugging groove (16) is formed in the peripheral side of the observation port (12), and the visual panel (3) can be inserted into the plugging groove (16) from the connection part of the observation port (12) and the pick-and-place port (11).
3. The cell thermal runaway testing device according to claim 2, further comprising a sealing fixing member (4), wherein a first end of the sealing fixing member (4) is pressed on an edge of the visual panel (3) located at the pick-and-place opening (11), a surface of a second end of the sealing fixing member (4) and an end face of the pick-and-place opening (11) are located on the same horizontal plane, and the cover plate (2) sealing cover is arranged on the end face of the pick-and-place opening (11) and a surface of the second end of the sealing fixing member (4).
4. A cell thermal runaway testing arrangement according to claim 3, characterized in that a clamping groove (41) is provided on the first end of the sealing fixture (4), which clamping groove (41) can be clamped with the visualization panel (3).
5. The cell thermal runaway testing device according to claim 4, further comprising a first gasket disposed between the visualization panel (3) and the socket (16); and/or
The cell thermal runaway testing device further comprises a second sealing gasket, and the second sealing gasket is arranged between the visual panel (3) and the clamping groove (41).
6. The cell thermal runaway testing device according to any one of claims 1 to 5, further comprising a sealing member, wherein a sealing groove (13) is arranged at the pick-and-place opening (11), a part of the sealing member is arranged in the sealing groove (13), and the sealing member is used for sealing a contact part of the cover plate (2) and the pick-and-place opening (11).
7. The cell thermal runaway testing apparatus according to any one of claims 1 to 5, wherein a first through hole (14) is formed in the housing (1), and the first through hole (14) is used for allowing a puncture needle to be inserted into the housing (1).
8. The cell thermal runaway testing apparatus according to any one of claims 1 to 5, wherein a second through hole (15) is formed in the housing (1), and the second through hole (15) is used for connecting an external gas tank.
9. The cell thermal runaway testing apparatus according to any one of claims 1 to 5, further comprising a liquid cooling plate (5), the liquid cooling plate (5) being detachably mounted on the housing (1).
10. The cell thermal runaway testing apparatus according to any one of claims 1 to 5, wherein an exhaust port (21) is provided on the cover plate (2), and the exhaust port (21) is used for installing a pressure release valve and an exhaust pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111375670.8A CN116148684A (en) | 2021-11-19 | 2021-11-19 | Electric core thermal runaway testing arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111375670.8A CN116148684A (en) | 2021-11-19 | 2021-11-19 | Electric core thermal runaway testing arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116148684A true CN116148684A (en) | 2023-05-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111375670.8A Pending CN116148684A (en) | 2021-11-19 | 2021-11-19 | Electric core thermal runaway testing arrangement |
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| CN (1) | CN116148684A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117192397A (en) * | 2023-09-07 | 2023-12-08 | 浙江斯柯特科技有限公司 | Battery cell detection equipment with adjustable positioning jig |
| CN117192397B (en) * | 2023-09-07 | 2024-05-28 | 浙江斯柯特科技有限公司 | Battery cell detection equipment with adjustable positioning jig |
-
2021
- 2021-11-19 CN CN202111375670.8A patent/CN116148684A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117192397A (en) * | 2023-09-07 | 2023-12-08 | 浙江斯柯特科技有限公司 | Battery cell detection equipment with adjustable positioning jig |
| CN117192397B (en) * | 2023-09-07 | 2024-05-28 | 浙江斯柯特科技有限公司 | Battery cell detection equipment with adjustable positioning jig |
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