CN218455776U - Thermal runaway test tool - Google Patents
Thermal runaway test tool Download PDFInfo
- Publication number
- CN218455776U CN218455776U CN202222074408.6U CN202222074408U CN218455776U CN 218455776 U CN218455776 U CN 218455776U CN 202222074408 U CN202222074408 U CN 202222074408U CN 218455776 U CN218455776 U CN 218455776U
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- assembly
- pressure relief
- thermal runaway
- pressure
- box body
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- 238000012360 testing method Methods 0.000 title claims abstract description 34
- 238000012544 monitoring process Methods 0.000 claims abstract description 34
- 230000000007 visual effect Effects 0.000 claims abstract description 22
- 230000004308 accommodation Effects 0.000 claims abstract description 7
- 239000011521 glass Substances 0.000 claims description 18
- 238000007789 sealing Methods 0.000 claims description 16
- 238000012800 visualization Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 abstract description 18
- 230000008569 process Effects 0.000 abstract description 16
- 238000013461 design Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 description 9
- 230000000712 assembly Effects 0.000 description 5
- 238000000429 assembly Methods 0.000 description 5
- 238000004880 explosion Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000013100 final test Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000005341 toughened glass Substances 0.000 description 1
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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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- Battery Mounting, Suspending (AREA)
Abstract
The utility model discloses a thermal runaway test fixture belongs to battery technical field. The thermal runaway test tool comprises a box body assembly, a visual assembly and a pressure relief assembly, wherein the box body assembly is provided with a window; the visual assembly is plugged in the window, a sealed accommodating space is formed by the visual assembly and the box body assembly, and the accommodating space is used for accommodating a battery; in pressure relief assembly located accommodation space, pressure relief assembly and box subassembly formed the pressure release passageway with accommodation space intercommunication, and the window is located on the pressure release passageway. The utility model discloses a thermal runaway test fixture can carry out visual monitoring to the pressure release passageway, and the overall process that the thermal runaway takes place is clearly shown to do and prevent the design of thermal runaway.
Description
Technical Field
The utility model relates to a battery field especially relates to a thermal runaway test fixture.
Background
The traditional thermal runaway test tool can only test the final test result, and the evaluation index is whether fire, explosion and the like occur outside the battery pack. When a fire occurs inside the battery pack but does not spread out of the battery pack, it is difficult to detect, and thus much useful information is missed. If the test is only carried out according to the test result, the phenomenon and the change of the whole thermal runaway process of the battery pack cannot be clearly and comprehensively reflected, and the design for preventing the thermal runaway is not favorable for solving the occurrence of the thermal runaway phenomenon.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a thermal runaway test fixture can carry out visual monitoring to pressure release channel, and the overall process that the thermal runaway takes place is clearly shown to do and prevent the design of thermal runaway.
To achieve the purpose, the utility model adopts the following technical proposal:
the utility model provides a thermal runaway test fixture, includes:
the box body assembly is provided with a window;
the visual component is blocked in the window, a sealed accommodating space is formed by the visual component and the box body component, and the accommodating space is used for accommodating a battery;
the pressure relief assembly is arranged in the accommodating space, the pressure relief assembly and the box body assembly form a pressure relief channel communicated with the accommodating space, and the window is arranged on the pressure relief channel.
In some possible embodiments, a plurality of the visualization assemblies are arranged, and the plurality of the visualization assemblies are arranged on the pressure relief channel at intervals.
In some possible embodiments, the visualization component comprises explosion-proof glass and a fixed block, the fixed block is connected to the box body component in a sealing mode, the explosion-proof glass is clamped between the box body component and the fixed block, and the explosion-proof glass is connected to the box body component and the fixed block in a sealing mode respectively.
In some possible embodiments, the pressure relief assembly includes a first mounting plate and a second mounting plate, the first mounting plate and the bottom wall of the box body assembly are arranged at intervals, the second mounting plate and the side wall of the box body assembly are arranged at intervals, and the first mounting plate and/or the second mounting plate are provided with air inlets communicated with the accommodating space.
In some possible embodiments, the box assembly further includes a tray for carrying the battery, the tray is provided with a pressure relief hole, the tray is supported on the pressure relief assembly, the box assembly and the tray form a pressure relief cavity, and the pressure relief hole, the pressure relief cavity and the pressure relief channel are communicated with each other.
In some possible embodiments, the pressure sensor further comprises a first air pressure monitoring assembly, and the first air pressure monitoring assembly is used for monitoring the air pressure of the pressure relief cavity.
In some possible embodiments, the pressure relief device further comprises a second air pressure monitoring component, and the second air pressure monitoring component is used for monitoring the air pressure of the pressure relief channel.
In some possible embodiments, the pressure relief device further comprises a temperature monitoring assembly for monitoring the temperature in the pressure relief channel.
In some possible embodiments, an explosion-proof valve is installed on the tank assembly, and when the air pressure in the pressure relief channel reaches a preset value and the explosion-proof valve is a passage, the pressure relief channel is communicated with the outside through the explosion-proof valve.
In some possible embodiments, the box assembly includes a lower box and an upper cover, the upper cover is hermetically connected to the lower box, and the pressure relief assembly and the window are respectively disposed on the lower box.
The utility model has the advantages that:
the utility model provides a thermal runaway test fixture, after the battery holds in accommodation space, carry out the thermal runaway test to the battery, when taking place to catch fire, explosion, carry out the pressure release through pressure release channel in order to guarantee the security, hot-air and material that the thermal runaway produced enter into pressure release channel simultaneously, can see through the whole process that the visual subassembly can clearly observe the thermal runaway, if can observe the flame condition in the pressure release channel directly perceivedly, can observe whether have flame, and the whole process that flame goes out from beginning; the method is favorable for better understanding of the thermal runaway process of the battery, and further contributes to the design of preventing the thermal runaway. For example, the length and volume of the pressure relief channel can be designed for thermal runaway processes to assist in designing the battery pack structure. Furthermore, the image information of the thermal runaway process can be obtained by arranging devices such as video monitoring and the like.
Drawings
Fig. 1 is an exploded view of a battery and a thermal runaway testing tool provided by an embodiment of the present invention;
fig. 2 is a top view of a thermal runaway testing tool provided by an embodiment of the present invention;
FIG. 3 is a cross-sectional O-O view of FIG. 2;
fig. 4 is a bottom view of a thermal runaway testing tool according to an embodiment of the present invention;
fig. 5 is an exploded view of a visualization assembly provided by an embodiment of the present invention.
In the figure:
100. a battery;
1. a case assembly; 11. a lower box body; 111. a window; 12. a tray; 121. a pressure relief vent; 122. a containing groove; 1A, an accommodating space;
2. a visualization component; 21. explosion-proof glass; 22. a fixed block; 23. a gasket;
3. a pressure relief assembly; 31. a first mounting plate; 32. a second mounting plate; 321. an air inlet;
41. a first barometric pressure monitoring assembly; 411. a pipeline; 42. a second air pressure monitoring assembly; 5. an explosion-proof valve;
m, a pressure relief channel; n, a pressure relief cavity.
Detailed Description
In order to make the technical problem solved by the present invention, the technical solutions adopted by the present invention, and the technical effects achieved by the present invention clearer, the following detailed description will be made with reference to the accompanying drawings for further describing the technical solutions of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, unless otherwise explicitly specified or limited, the terms "connected", "connected" and "fixed" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; 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 in specific cases to those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.
The embodiment provides a thermal runaway test tool, as shown in fig. 1-3, which includes a box assembly 1, a visualization assembly 2 and a pressure relief assembly 3, where the box assembly 1 is provided with a window 111; the visual component 2 is plugged in the window 111, the visual component 2 and the box body component 1 form a sealed accommodating space 1A, and the accommodating space 1A is used for accommodating the battery 100; in pressure relief subassembly 3 located accommodation space 1A, pressure relief subassembly 3 and box subassembly 1 formed the pressure relief passageway M that communicates with accommodation space 1A, and window 111 is located on pressure relief passageway M.
After the battery 100 is accommodated in the accommodating space 1A, a thermal runaway test is performed on the battery 100, when fire and explosion occur, pressure is released through the pressure release channel M to ensure safety, meanwhile, hot air and substances generated by the thermal runaway enter the pressure release channel M, the whole process of the thermal runaway can be clearly observed through the visual component 2, if the flame condition in the pressure release channel M can be visually observed, whether flame exists or not can be observed, and the whole process from the beginning to the extinguishing of the flame can be observed; the thermal runaway process of the battery 100 can be better solved, and the design for preventing the thermal runaway can be facilitated. For example, the length and volume of the pressure relief channel M can be designed for thermal runaway processes to aid in designing the cell 100 package structure. Furthermore, the image information of the thermal runaway process can be obtained by arranging devices such as video monitoring and the like.
In one embodiment, as shown in fig. 1, the case assembly 1 includes a lower case 11 and an upper cover, the upper cover is hermetically connected to the lower case 11, the pressure relief assembly 3 and the window 111 are respectively disposed on the lower case 11, the pressure relief assembly 3 and the lower case 11 form a pressure relief channel M, the upper cover mainly plays a role in sealing and protecting, and the battery 100 can be taken and placed in the lower case 11 by opening the upper cover, which is convenient for operation.
In one embodiment, as shown in fig. 1, an explosion-proof valve 5 is installed on a tank assembly 1, when the air pressure in a pressure relief channel M reaches a preset value and the explosion-proof valve 5 is a passage, the pressure relief channel M is communicated with the outside through the explosion-proof valve 5, and when the preset value is reached, pressure relief can be performed to ensure test safety; the specific preset values can be set according to the prior art, the number of the specifically-set explosion-proof valves 5 is set according to requirements, and the specific installation positions of the explosion-proof valves 5 are set according to requirements and are not limited.
In one embodiment, as shown in fig. 1, the pressure relief assembly 3 includes a first mounting plate 31 and a second mounting plate 32, the first mounting plate 31 and the bottom wall of the box body 1 are spaced, the second mounting plate 32 and the side wall of the box body 1 are spaced, the first mounting plate 31 and/or the second mounting plate 32 are/is provided with an air inlet 321 communicated with the accommodating space 1A, the first mounting plate 31 surrounds the side wall of the lower box body 11, the first mounting plate 31, the second mounting plate 32, the bottom wall of the box body and the side wall of the box body form a pressure relief channel M, the side wall and the bottom wall of the lower box body 11 are fully utilized, and the structure is simplified.
In one embodiment, as shown in fig. 1 to 3, the case assembly 1 further includes a tray 12 for carrying the battery 100, the tray 12 is provided with a pressure relief hole 121, the tray 12 is supported on the pressure relief assembly 3, the case assembly 1 and the tray 12 form a pressure relief cavity N, the pressure relief hole 121, the pressure relief cavity N and the pressure relief channel M are communicated with each other, so that flame and the like generated by thermal runaway of the battery 100 sequentially passes through the pressure relief hole 121, the pressure relief cavity N and the pressure relief channel M, so as to observe all information; further, the tray 12 is provided with an accommodating groove 122 for accommodating the battery cell, and the pressure relief hole 121 is formed in the bottom of the accommodating groove 122; further, be equipped with a plurality of pressure release holes 121, every electric core can block up a pressure release hole 121, carries out the pressure release through the corresponding pressure release hole 121 in its bottom when one of them electric core takes place thermal runaway to prevent that heat from spreading and influencing other electric cores.
Further, the battery 100 includes a battery cell and a bus bar provided on the battery cell, and the configuration may be provided with reference to an existing configuration, which is not limited.
In this embodiment, as shown in fig. 1 to 3, the tray 12 is connected to the first mounting plate 31 by a fastening member such as a bolt, the second mounting plate 32, the bottom wall of the lower case 11 and the tray 12 form a pressure relief chamber N, and the pressure relief chamber N is communicated with the pressure relief channel M through the air inlet 321 on the second mounting plate 32.
In one embodiment, as shown in fig. 4, the thermal runaway testing tool further includes a second air pressure monitoring component 42, where the second air pressure monitoring component 42 is configured to monitor the air pressure of the pressure relief channel M; in an embodiment, thermal runaway test fixture still includes the temperature monitoring subassembly (not shown in the figure), and the temperature monitoring subassembly is used for monitoring the temperature in the pressure release passageway M, monitors the temperature and the atmospheric pressure information of thermal runaway in-process respectively, can follow the demonstration thermal runaway process of a plurality of aspects.
In one embodiment, as shown in fig. 4, the thermal runaway testing tool further includes a first air pressure monitoring assembly 41 for monitoring the air pressure of the pressure relief cavity N; the first air pressure monitoring assembly 41 and the second air pressure monitoring assembly 42 can respectively observe the air pressures of the pressure relief cavity N and the pressure relief channel M to show the air pressure change from the pressure relief cavity N to the pressure relief channel M due to thermal runaway, and further show the thermal runaway process.
Further, the temperature monitoring assembly comprises a temperature sensor, and the air pressure monitoring assembly comprises a pressure sensor; further, as shown in fig. 2 and 3, the lower case 11 is communicated with a duct 411, and the pressure sensor is mounted on the duct 41 for easy installation and viewing.
In one embodiment, as shown in fig. 4, the thermal runaway test fixture comprises a plurality of visual components 2, and the visual components 2 are arranged on the pressure relief channel M at intervals. Visual subassembly 2 is set up through the different positions at pressure release passageway M, realizes the visual monitoring to the different positions of pressure release passageway M, and the overall process that thermal runaway takes place can be shown clearly like this.
In this embodiment, as shown in fig. 4, the box body assembly 1 is a rectangular box body, the pressure relief channel M is arranged along the periphery of the inner wall of the rectangular box body, and three visual assemblies 2 are arranged, wherein two visual assemblies 2 are arranged on the right side wall of the box body assembly 1, and the remaining one visual assembly 2 is arranged on the left side wall of the box body assembly 1; in other embodiments, more visualization components 2 may be provided, and may be provided on two adjacent sidewalls, or on three sidewalls or four sidewalls, without limitation; further, the number of visualization assemblies 2 provided on each side wall is not limited.
In one embodiment, as shown in fig. 5, the visualization component 2 includes an explosion-proof glass 21 and a fixing block 22, the explosion-proof glass 21 is transparent tempered glass, the fixing block 22 is hermetically connected to the box component 1, the explosion-proof glass 21 is sandwiched between the box component 1 and the fixing block 22, the explosion-proof glass 21 is hermetically connected to the box component 1 and the fixing block 22 respectively, the explosion-proof glass 21 ensures safety, and the fixing block 22 can be connected to the box component 1 by a fastener; further, the visualization component 2 further comprises two sealing gaskets 23, one sealing gasket 23 is arranged between the explosion-proof glass 21 and the box body component 1, the other sealing gasket 23 is arranged between the explosion-proof glass 21 and the fixing block 22 and is fixed on the box body component 1 through the fixing block 22, and the two sealing gaskets 23 and the explosion-proof glass 21 are clamped between the fixing block 22 and the box body component 1 to realize fixation.
Optionally, the fixing block 22 is an installation cover with an opening, the sealing gaskets 23 are provided with openings, the top surface of the installation cover and the two sealing gaskets 23 are respectively provided with a through hole, the box body assembly 1 is provided with a threaded hole, a screw sequentially passes through the installation hole on the top surface of the installation cover, the installation holes of the two sealing gaskets 23 and the threaded hole of the box body assembly 1, and the threaded holes are in threaded connection, so that the installation cover and the two sealing gaskets 23 are respectively connected with the box body assembly 1, the explosion-proof glass 21 is clamped between the two sealing gaskets 23, and the inside of the pressure relief channel M can be observed sequentially through the opening of the installation cover, the opening of the first sealing gasket 23, the opening of the explosion-proof glass 21, the opening of the second sealing gasket 23 and the window 111; and the mounting cover functions to protect the packing 23 and the explosion-proof glass 21.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. Any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The utility model provides a thermal runaway test fixture which characterized in that includes:
the box body assembly (1) is provided with a window (111);
the visual assembly (2) is plugged in the window (111), the visual assembly (2) and the box body assembly (1) form a sealed accommodating space (1A), and the accommodating space (1A) is used for accommodating a battery (100);
pressure release subassembly (3), locate in accommodation space (1A), pressure release subassembly (3) with box subassembly (1) form with pressure release passageway (M) of accommodation space (1A) intercommunication, window (111) are located on the pressure release passageway (M).
2. The thermal runaway test tool according to claim 1, wherein a plurality of the visual components (2) are provided, and the visual components (2) are arranged on the pressure relief channel (M) at intervals.
3. The thermal runaway test fixture according to claim 1, wherein the visualization component (2) comprises explosion-proof glass (21) and a fixing block (22), the fixing block (22) is connected to the box body component (1) in a sealing mode, the explosion-proof glass (21) is clamped between the box body component (1) and the fixing block (22), and the explosion-proof glass (21) is connected with the box body component (1) and the fixing block (22) in a sealing mode respectively.
4. The thermal runaway test fixture according to claim 1, wherein the pressure relief assembly (3) comprises a first mounting plate (31) and a second mounting plate (32), the first mounting plate (31) and the bottom wall of the box body assembly (1) are arranged at intervals, the second mounting plate (32) and the side wall of the box body assembly (1) are arranged at intervals, and the first mounting plate (31) and/or the second mounting plate (32) are/is provided with an air inlet (321) communicated with the accommodating space (1A).
5. The thermal runaway test fixture according to claim 1, wherein the box assembly (1) further comprises a tray (12) for carrying the battery (100), the tray (12) is provided with a pressure relief hole (121), the tray (12) is supported on the pressure relief assembly (3), the box assembly (1) and the tray (12) form a pressure relief cavity (N), and the pressure relief hole (121), the pressure relief cavity (N) and the pressure relief channel (M) are communicated with each other.
6. The thermal runaway test fixture according to claim 5, further comprising a first air pressure monitoring assembly (41), wherein the first air pressure monitoring assembly (41) is used for monitoring the air pressure of the pressure relief cavity (N).
7. The thermal runaway test fixture according to any one of claims 1-6, further comprising a second air pressure monitoring assembly (42), wherein the second air pressure monitoring assembly (42) is used for monitoring the air pressure of the pressure relief channel (M).
8. The thermal runaway test fixture according to any one of claims 1-6, further comprising a temperature monitoring assembly for monitoring the temperature within the pressure relief channel (M).
9. The thermal runaway test tool according to any one of claims 1 to 6, wherein an explosion-proof valve (5) is mounted on the box assembly (1), and when the air pressure in the pressure relief channel (M) reaches a preset value and the explosion-proof valve (5) is a passage, the pressure relief channel (M) is communicated with the outside through the explosion-proof valve (5).
10. The thermal runaway test fixture according to any one of claims 1 to 6, wherein the box assembly (1) comprises a lower box (11) and an upper cover, the upper cover is hermetically connected to the lower box (11), and the pressure relief assembly (3) and the window (111) are respectively arranged on the lower box (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222074408.6U CN218455776U (en) | 2022-08-08 | 2022-08-08 | Thermal runaway test tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222074408.6U CN218455776U (en) | 2022-08-08 | 2022-08-08 | Thermal runaway test tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218455776U true CN218455776U (en) | 2023-02-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222074408.6U Active CN218455776U (en) | 2022-08-08 | 2022-08-08 | Thermal runaway test tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218455776U (en) |
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2022
- 2022-08-08 CN CN202222074408.6U patent/CN218455776U/en active Active
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