CN221100988U - Test device for thermal runaway of battery pack - Google Patents
Test device for thermal runaway of battery pack Download PDFInfo
- Publication number
- CN221100988U CN221100988U CN202322311396.9U CN202322311396U CN221100988U CN 221100988 U CN221100988 U CN 221100988U CN 202322311396 U CN202322311396 U CN 202322311396U CN 221100988 U CN221100988 U CN 221100988U
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- side wall
- battery pack
- test
- thermal runaway
- module
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- 238000012360 testing method Methods 0.000 title claims abstract description 62
- 238000001514 detection method Methods 0.000 claims abstract description 25
- 238000000926 separation method Methods 0.000 claims abstract description 23
- 238000002474 experimental method Methods 0.000 claims abstract description 13
- 238000007789 sealing Methods 0.000 claims description 18
- 238000005192 partition Methods 0.000 claims description 15
- 238000004088 simulation Methods 0.000 abstract description 8
- 238000013461 design Methods 0.000 description 4
- 238000004880 explosion Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012795 verification Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
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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 relates to the technical field of battery pack thermal runaway detection, in particular to a battery pack thermal runaway testing device. Comprises a box body and an experimental cavity enclosed by the box body; the box includes: a floor, side wall panels, and a lid; the side wall plate is fixed on the bottom plate, and the box cover is fixed on the side wall plate to enclose the experiment cavity; a separation baffle is arranged in the experiment cavity to separate the experiment cavity into an out-of-control trigger area, a middle area and an out-of-control detection area; the middle area is close to the two side wall plates and is provided with a movable module support for adjusting the height of the module. The three areas can better distribute respective functions, the inside of the experimental device is designed into a sealed cavity, the environment condition of the test module in the battery pack is accurately simulated through the separation baffle and the support, and the influence of the external environment and the distance from the test module to each outer plate on the simulation result is eliminated.
Description
Technical Field
The utility model relates to the technical field of battery pack thermal runaway detection, in particular to a battery pack thermal runaway testing device.
Background
Safety problems are one of the challenges faced by current new energy automobile battery systems. When the module catches fire after taking place thermal runaway, can trigger the runaway of other modules in the battery package in proper order, and then lead to whole battery package to catch fire out of control, can bring the security risk for the passenger. Therefore, how to timely remove the heat generated by the run-away module and the heat protection design of the gas exiting the battery pack and the adjacent modules is a matter that the designer must consider.
In the case where the module-level thermal runaway test passes, it is also indispensable to perform the thermal runaway test on the battery pack.
For example, patent document CN115127952a discloses a test device and a test method for simulating thermal runaway of a battery pack, the device includes: the device comprises a plate to be tested, a first baffle, a second baffle, a first temperature measuring wire, a second temperature measuring wire and a flame source, wherein the plate to be tested is clamped and installed between the first baffle and the second baffle, a first through hole is formed in the surface of the first baffle, a second through hole is formed in the surface of the second baffle, the first through hole is opposite to the second through hole, a first through groove is formed in the surface, close to the plate to be tested, of the first baffle, a second through groove is formed in the surface, close to the plate to be tested, of the second baffle, the first temperature measuring wire is embedded and installed in the first through groove, one end of the first temperature measuring wire is opposite to the first through hole, the second temperature measuring wire is embedded and installed in the second through groove, one end of the second temperature measuring wire is opposite to the second through hole, and a flame outlet of the flame source is opposite to the first through hole. The test device can accurately test the position of the area on the surface of the board to be tested at high temperature, and the simulation effect is closer to the real situation.
However, in the practical use process, the thermal runaway simulation detection uses a flame source to heat and is difficult to simulate the situation that a real module is arranged in a battery pack in an open environment, so that the data obtained through experimental simulation have a lot of external influences and are not accurate enough.
Disclosure of utility model
The utility model aims to provide a test device for thermal runaway of a battery pack, which can truly simulate the environment of a module in the battery pack, so that the obtained data is less affected by the outside, and the simulation test result is more accurate.
In order to achieve the above purpose, the present utility model provides the following technical solutions: a battery pack thermal runaway testing device comprises a box body and an experimental cavity enclosed by the box body; the box includes: a floor, side wall panels, and a lid; the side wall plate is fixed on the bottom plate, and the box cover is fixed on the side wall plate to enclose the experiment cavity; a separation baffle is arranged in the experiment cavity to separate the experiment cavity into an out-of-control trigger area, a middle area and an out-of-control detection area; the middle area is close to the two side wall plates and is provided with a movable module support for adjusting the height of the module. The three areas can better distribute respective functions, the inside of the test device is designed into a sealed cavity, the environment condition of the test module in the battery pack is accurately simulated through the separation baffle plate and the support, and the influence of the external environment and the distance from the test module to each outer plate on the simulation result is eliminated.
Preferably, a triangular through hole is formed at the upper edge of the separation baffle plate; the triangular through holes are communicated with the out-of-control trigger area, the middle area and the out-of-control detection area. The triangle through holes are convenient for leading the pressure generated during the thermal runaway explosion of the module into the runaway detection area from the middle area, and recording the data of the module during the runaway detection.
Preferably, a test module is arranged in the middle area; the test module is arranged on the two module supports. The module support can adjust the distance between the separation baffle and the surrounding wall plates in the middle area, so that the device can better simulate the environment of the module in the battery pack.
Preferably, a prefabricated wire harness hole is formed in the side wall plate of the out-of-control trigger area; a test wire harness is arranged in the out-of-control trigger area; one end of the test wire harness is connected with an external power supply through the prefabricated wire harness hole, and the other end of the test wire harness is connected with the test module through the triangular through hole on the separation partition board. The out-of-control triggering area simulates a wire harness placement area in the battery pack, and can trigger the thermal out-of-control of the test module in the middle area by connecting an external power supply.
Preferably, the side wall plate of the out-of-control detection area close to the triangular through hole and the side wall plate far away from the separation baffle are provided with temperature sensors; and a plurality of explosion-proof valve mounting pieces are arranged on the side wall plate of the out-of-control detection area, which is far away from the separation partition plate. The explosion-proof valve mounting piece can be used for releasing pressure for the test device, so that the device is prevented from being damaged when thermal runaway is detected due to too high pressure.
Preferably, two of the separation partitions are arranged in parallel and fixed by fasteners. Maintaining the parallel arrangement of the two separating baffles can ensure the tightness between the three areas.
Preferably, the box body is rectangular; a short sealing strip and a long sealing strip are arranged between the box body and the box cover; the long sealing strips and the short sealing strips are combined to form a rectangular sealing strip which is matched with the section shape of the side wall plate. The sealing strips are arranged on the side wall plate, so that the pressure and the temperature inside the detection device can be prevented from being influenced by the outside, the air tightness is improved, and the detection result is more accurate.
Compared with the prior art, the utility model has the beneficial effects that:
The utility model provides a test device for thermal runaway of a battery pack, which can truly simulate the environment of a module in the battery pack, the obtained data are less affected by the outside, and the simulation test result is more accurate.
Drawings
Fig. 1 is an exploded view of one embodiment of the present utility model.
Fig. 2 is a top view of the present utility model.
In the figure: 1. a case cover; 2. a fastener; 3. a short sealing strip; 4. a long sealing strip; 5. a middle region; 6. a side wall panel; 7. an explosion-proof valve mount; 8. prefabricating a wire bundle hole; 9. triangular through holes; 10. a bottom plate; 11. a runaway trigger area; 12. a test module; 13. a runaway detection zone; 14. a partition plate; 15. and a module bracket.
Detailed Description
The following describes a specific embodiment of the technical scheme of the present utility model by way of examples and with reference to the accompanying drawings.
Referring to fig. 1-2, an embodiment of the present utility model is provided:
A battery pack thermal runaway testing device comprises a box body and an experimental cavity enclosed by the box body; the box includes: a bottom panel 10, side wall panels 6 and a lid 1; the side wall plate 6 is fixed on the bottom plate 10, the box cover 1 is fixed on the side wall plate 6, and an experiment cavity is enclosed; a separation baffle 14 is arranged in the experiment cavity to separate the experiment cavity into a runaway triggering area 11, a middle area 5 and a runaway detection area 13; the middle area 5 is provided with a module support 15 adjacent to the side wall panels 6 for moving and adjusting the height of the module. The three areas can better distribute respective functions, the inside of the test device is designed into a sealed cavity, the environment condition of the test module 12 in the battery pack is accurately simulated through the separation baffle 14 and the support, and the influence of the external environment and the distance from the test module 12 to each outer plate on the simulation result is eliminated. The upper edge of the separation baffle plate 14 is provided with a triangular through hole 9; the triangular through holes 9 connect the three areas. The triangular through holes 9 facilitate the introduction of the pressure generated during a thermal runaway explosion of the module from the intermediate area 5 to the runaway detection area 13, where the data is recorded.
A prefabricated wire bundle hole 8 is arranged on the side wall plate 6 of the out-of-control trigger area 11; a test wire harness is arranged in the out-of-control trigger area 11; one end of the test wire harness is connected with an external power supply through a prefabricated wire harness hole 8, and the other end of the test wire harness is connected with a test module 12 through a triangular through hole 9 on a separation partition plate 14. The runaway triggering area 11 simulates a harness placement area in the battery pack, and can play a role in triggering thermal runaway of the test module 12 in the intermediate area 5 by connecting an external power supply. A test module 12 is arranged in the middle area 5; the test modules 12 are mounted on two module holders 15. The module support 15 allows for adjustment of the distance of the module within the intermediate zone 5 to the dividing partition 14 and the surrounding wall panels so that the device better simulates the environment of the module within the battery pack. The side wall plate 6 of the uncontrolled detection area 13 close to the triangular through hole 9 and the side wall plate 6 far from the separation baffle 14 are provided with temperature sensors; the side wall plate 6 of the runaway detection zone 13 remote from the partition 14 is provided with a number of explosion valve mounts 7. The explosion-proof valve mounting piece 7 can release pressure for the test device, and damage to the device when thermal runaway is detected due to too high pressure is prevented. The two partition plates 14 are arranged in parallel and fixed by the fastener 2. Maintaining the parallel arrangement of the two dividing baffles 14 ensures tightness between the three areas. The box body is rectangular; a short sealing strip 3 and a long sealing strip 4 are arranged between the box body and the box cover 1; the long and short sealing strips 3 are combined to form a rectangular sealing strip which is matched with the cross section shape of the side wall plate 6. The sealing strips are arranged on the side wall plate 6, so that the pressure and the temperature inside the detection device can be prevented from being influenced by the outside, the air tightness is improved, and the detection result is more accurate.
When the detection device is assembled, the side wall plates 6 are fixed on the bottom plate 10, the side wall plates 6 and the bottom plate 10 are guaranteed to be in a vertical state through bolt fastening connection, when the side wall plates 6 are installed, two short side wall plates 6 are located at two opposite sides, one plate is provided with a prefabricated wire bundle hole 8, and the other plate is provided with a plurality of explosion-proof valve installation pieces 7. And then the separation partition plates 14 are arranged on the base, the distance between the two separation partition plates 14 simulates the distance between the test module 12 and two side edges in the battery pack, and after the separation partition plates 14 are separated, the distance of the out-of-control detection area 13 is consistent with the space size of the wiring harness of the test module 12 in the battery pack. The triangular through holes 9 on the two separation clapboards 14 are transversely communicated, the distance from the explosion-proof valve on the explosion-proof valve mounting piece 7 to the surface of the side wall plate 6 is consistent with the distance in the battery pack, and the explosion-proof valve is of the same type as the explosion-proof valve in the battery pack, so that the explosion pressure of the explosion-proof valve is consistent. In use, the module support 15 simulates the test module 12 to the same position as the battery pack according to the same distance as the test battery pack. In the test, the test module 12 of the middle area 5 is subjected to thermal runaway by the test harness, and whether the thermal runaway of the test module 12 triggers the thermal runaway of the battery pack is observed. The module number is reduced in earlier stage, reduces battery package box cost, reduces experiment verification cost. The assembly state of various modules in the battery pack can be simulated. The design of the case is referred to as a battery pack structure, and some factors considered to have an influence on the runaway protection of the battery Bao Re can be effectively verified. When it is necessary to consider whether some design modifications are made to the battery pack, the effect of these modifications can be verified by the apparatus. The device can reduce experimental verification cost and improve economy. The method can be used for verification before the thermal runaway test of the formal battery pack, and can also be used for verifying some design modifications of the battery pack.
In addition to the above embodiments, the technical features or technical data of the present utility model may be rearranged and combined within the scope of the claims and the description of the present utility model to constitute new embodiments, which may be implemented without inventive effort by those skilled in the art, and thus, embodiments of the present utility model not described in detail should be considered as embodiments of the present utility model within the scope of the protection of the present utility model.
Claims (7)
1. A test device for thermal runaway of a battery pack, comprising: the box body and the experimental cavity enclosed by the box body;
The box includes: a bottom plate (10), a side wall plate (6) and a box cover (1); the side wall plate (6) is fixed on the bottom plate (10), and the box cover (1) is fixed on the side wall plate (6) to enclose the experiment cavity;
A separation baffle (14) is arranged in the experiment cavity to separate the experiment cavity into an out-of-control trigger area (11), a middle area (5) and an out-of-control detection area (13);
The middle area (5) is provided with a module support (15) which can move and adjust the height of the module close to the two side wall plates (6).
2. The test device for thermal runaway of a battery pack according to claim 1, characterized in that a triangular through hole (9) is provided at the upper edge of the partition plate (14); the triangular through hole (9) is communicated with the out-of-control trigger area (11), the middle area (5) and the out-of-control detection area (13).
3. The test device for thermal runaway of a battery pack according to claim 1, wherein a test module (12) is arranged in the middle area (5); the test modules (12) are mounted on two of the module holders (15).
4. A test device for thermal runaway of a battery pack according to claim 3, characterized in that a preformed wire harness hole (8) is provided in the side wall plate (6) of the runaway triggering area (11); a test wire harness is arranged in the out-of-control trigger area (11); one end of the test wire harness is connected with an external power supply through the prefabricated wire harness hole (8), and the other end of the test wire harness is connected with the test module (12) through the triangular through hole (9) on the separation partition plate (14).
5. A test device for thermal runaway of a battery pack according to claim 2, characterized in that the runaway detection zone (13) is provided with temperature sensors on both the side wall plate (6) close to the triangular through hole (9) and the side wall plate (6) remote from the partition plate (14); a plurality of explosion-proof valve mounting pieces (7) are arranged on the side wall plate (6) of the out-of-control detection area (13) far away from the separation partition plate (14).
6. A test device for thermal runaway of a battery pack according to claim 2, characterized in that two of said separation separators (14) are arranged in parallel and fixed by means of fasteners (2).
7. A thermal runaway test device for a battery pack according to any one of claims 1 to 6, wherein said case is rectangular; a short sealing strip (3) and a long sealing strip (4) are arranged between the box body and the box cover (1); the long sealing strips (3) and the short sealing strips (3) are combined to form rectangular sealing strips which are matched with the cross section shape of the side wall plate (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322311396.9U CN221100988U (en) | 2023-08-28 | 2023-08-28 | Test device for thermal runaway of battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322311396.9U CN221100988U (en) | 2023-08-28 | 2023-08-28 | Test device for thermal runaway of battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221100988U true CN221100988U (en) | 2024-06-07 |
Family
ID=91314566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322311396.9U Active CN221100988U (en) | 2023-08-28 | 2023-08-28 | Test device for thermal runaway of battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221100988U (en) |
-
2023
- 2023-08-28 CN CN202322311396.9U patent/CN221100988U/en active Active
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