Battery cell thermal runaway testing device

Abstract

The invention relates to the technical field of battery cell testing, and discloses a battery cell thermal runaway testing device, which comprises a shell, a top cover, a first clamping piece and a second clamping piece, and is characterized in that the top end of the shell is provided with an opening; the top cover covers the opening of the shell and is connected with the shell in a matched manner, and a temperature acquisition point is arranged on the top cover; the first clamping piece and the second clamping piece are arranged in the shell in a spaced mode in the first direction so as to define a containing space used for containing a battery cell, and the position of at least one of the first clamping piece and the second clamping piece can be adjusted in the first direction. And the first clamping piece and the second clamping piece are used for clamping the battery cell in the first direction. The battery cell thermal runaway testing device has the advantages of being high in universality and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of battery cell testing, and in particular to a battery cell thermal runaway testing device. Background Art

[0002] The upper cover of the battery pack needs to have the ability to resist thermal runaway of the battery cell. Therefore, it is usually necessary to use a battery cell thermal runaway test device to simulate the real environment inside the battery pack when the battery cell thermal runaway occurs, so as to test the protective performance of the upper cover of the battery pack. In the related art, the battery cell thermal runaway test device is usually customized according to the external dimensions of the battery cell. Since the battery cell models of the battery pack are various and of different sizes, it is impossible to test the battery cells of different models and sizes, resulting in poor versatility of the battery cell thermal runaway test device. Summary of the invention

[0003] The present disclosure aims to solve one of the technical problems in the related art at least to a certain extent. To this end, an embodiment of the present disclosure provides a battery cell thermal runaway test device with strong versatility.

[0004] The battery cell thermal runaway test device of the disclosed embodiment comprises a shell, a top cover, a first clamping member and a second clamping member, wherein the top end of the shell has an opening; the top cover is arranged on the opening of the shell and is connected to the shell in a matching manner, and a temperature collection point is arranged on the top cover;

[0005] The first clamping member and the second clamping member are arranged in the shell at intervals along a first direction to define a placement space for placing the battery cell, and at least one of the first clamping member and the second clamping member is positionally adjustable along the first direction so that the first clamping member and the second clamping member clamp the battery cell in the first direction.

[0006] In some embodiments, the battery cell thermal runaway test device of the disclosed embodiment also includes a first mounting plate and a second mounting plate, the first mounting plate and the second mounting plate are spaced apart along the first direction on the inner bottom wall of the shell, one end of the first mounting plate away from the second mounting plate in the first direction is abutted against the side wall of the shell, the first clamp is adjustably connected to the first mounting plate along the first direction, one end of the second mounting plate away from the first mounting plate in the first direction is abutted against the side wall of the shell, and the second clamp is adjustably connected to the second mounting plate along the first direction.

[0007] In some embodiments, the first clamping member includes a first clamping plate and a first adjustment plate connected to each other, the second clamping member includes a second clamping plate and a second adjustment plate connected to each other, the first clamping plate and the second clamping plate are arranged opposite to each other in the first direction to form the placement space, the first adjustment plate is connected to the first mounting plate in an adjustable position along the first direction, and the second adjustment plate is connected to the second mounting plate in an adjustable position along the first direction.

[0008] In some embodiments, the first adjustment plate and the first clamping plate are arranged in an L shape, and the first adjustment plate is arranged on a side of the first clamping plate away from the second clamping plate in the first direction and parallel to the first mounting plate;

[0009] The second adjustment plate and the second clamping plate are arranged in an L shape. The second adjustment plate is arranged on a side of the second clamping plate away from the second clamping plate in the first direction and parallel to the second mounting plate.

[0010] In some embodiments, a first insulating member is provided on one side of the first clamping plate close to the second clamping member in the first direction; and / or

[0011] A second insulating member is provided on one side of the second clamping plate close to the first clamping member in the first direction.

[0012] In some embodiments, the first mounting plate has a first threaded hole, the first adjustment plate has a first through slot extending along the first direction, the battery cell thermal runaway test device further comprises a first bolt, the first bolt passes through the first through slot and is connected to the first threaded hole, and the first bolt is used to fasten the first adjustment plate; and / or

[0013] The second mounting plate has a second threaded hole, the second adjustment plate has a second through slot extending along the first direction, and the battery cell thermal runaway test device also includes a second bolt, the second bolt passes through the second through slot and is connected to the second threaded hole, and the second bolt is used to fasten the second adjustment plate.

[0014] In some embodiments, the first mounting plate has a first T-slot extending along the first direction, the opening of the first T-slot is arranged toward the first adjustment plate, the first adjustment plate has a first through hole, the battery cell thermal runaway test device further comprises a first bolt and a first nut, the bolt head of the first bolt is slidably placed in the first T-slot along the first direction, the screw rod of the first bolt passes through the first through hole and is connected to the first nut to fasten the first adjustment plate; and / or

[0015] The second mounting plate has a second T-slot extending along the first direction, the opening of the second T-slot is arranged toward the second adjustment plate, the second adjustment plate has a second through hole, the battery cell thermal runaway test device also includes a second bolt and a second nut, the bolt head of the second bolt is slidably placed in the second T-slot along the first direction, the screw rod of the second bolt passes through the second through hole and is connected to the second nut to fasten the second adjustment plate.

[0016] In some embodiments, the battery cell thermal runaway test device of the embodiment of the present disclosure further includes:

[0017] a first stop plate, the first stop plate and the first mounting plate are arranged in an L-shape and the first stop plate is arranged at one end of the first mounting plate away from the first clamping member in the first direction, the first stop plate is arranged parallel to the first clamping plate and stops on the side wall of the shell; and / or

[0018] The second stop plate is arranged in an L shape with the second mounting plate and the second stop plate is arranged at one end of the second mounting plate away from the second clamping member in the first direction. The second stop plate is arranged parallel to the second clamping plate and stops on the side wall of the shell.

[0019] In some embodiments, the battery cell thermal runaway testing device of the present disclosure embodiment further includes a support plate, which is disposed on the inner bottom wall of the shell and is located between the first clamping member and the second clamping member in the first direction, and the support plate is used to support the battery cell.

[0020] In some embodiments, the battery cell thermal runaway testing device of the present embodiment also includes a bottom cooling plate and a side cooling plate. The bottom cooling plate is arranged on the top end surface of the support plate for cooling the bottom of the battery cell, and the side cooling plate is arranged in the shell for cooling the side of the battery cell.

[0021] During testing of the battery cell thermal runaway test device of the disclosed embodiment, since at least one of the first clamp and the second clamp is positionally adjustable along the first direction, the size of the placement space between the first clamp and the second clamp in the first direction can be flexibly adjusted, so that battery cells of different specifications and sizes or different numbers can be placed in the placement space to meet the thermal runaway test of battery cells of different specifications and sizes or different numbers. Compared with the related art, there is no need to separately design battery cell thermal runaway test devices for battery cells of different specifications and sizes, and the structure is simple and the versatility is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a battery cell thermal runaway testing device according to an embodiment of the present invention.

[0023] Figure 2 It is a cross-sectional view of a battery cell thermal runaway testing device according to an embodiment of the present invention.

[0024] Figure 3 It is a structural schematic diagram of a first clamping member and a second clamping member of a battery cell thermal runaway test device according to an embodiment of the present invention.

[0025] Figure 4 It is a schematic structural diagram of a first clamp and a second clamp of a battery cell thermal runaway test device according to another embodiment of the present invention.

[0026] Figure 5 It is a partial cross-sectional view of a battery cell thermal runaway testing device according to an embodiment of the present invention.

[0027] Figure 6 It is a partial cross-sectional view of a battery cell thermal runaway testing device according to an embodiment of the present invention.

[0028] Reference numerals:

[0029] 1. Shell; 2. Top cover; 3. First clamping member; 301. First clamping plate; 302. First adjustment plate; 3021. First through slot; 3022. First through hole; 4. Second clamping member; 401. Second clamping plate; 402. Second adjustment plate; 4021. Second through slot; 4022. Second through hole; 5. First mounting plate; 501. First threaded hole; 502. First T-slot; 6. Second mounting plate; 601. First Two threaded holes; 602, second T-slot; 7, first insulating member; 8, second insulating member; 9, first bolt; 10, first nut; 11, second bolt; 12, second nut; 13, first stop plate; 14, second stop plate; 15, support plate; 16, bottom cooling plate; 17, side cooling plate; 18, explosion-proof valve; 19, air pressure sensor; 20, ceramic composite tape; 21, corrugated structural member; 22, PC limit strip. DETAILED DESCRIPTION

[0030] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0031] The technical solution of the present application is described in detail below with reference to the accompanying drawings.

[0032] like Figures 1 to 6 As shown, the battery cell thermal runaway test device according to the embodiment of the present invention comprises a housing 1, a top cover 2, a first clamp 3 and a second clamp 4. The top of the housing 1 has an opening, the top cover 2 is covered on the opening of the housing 1 and is connected to the housing 1, and a temperature collection point is provided on the top cover 2.

[0033] The first clamping member 3 and the second clamping member 4 are spaced apart along the first direction in the shell 1 to define a placement space for placing the battery cell. At least one of the first clamping member 3 and the second clamping member 4 is positionally adjustable along the first direction so that the first clamping member 3 and the second clamping member 4 clamp the battery cell in the first direction.

[0034] The first direction may be the length direction of the housing 1 or the width direction of the housing 1, for example, Figure 2 As shown, the first direction is the length direction of the shell 1.

[0035] At least one of the first clamping member 3 and the second clamping member 4 is positionally adjustable along the first direction. It can be understood that only the first clamping member 3 is positionally adjustable along the first direction, or only the second clamping member 4 is positionally adjustable along the first direction, or both the first clamping member 3 and the second clamping member 4 are positionally adjustable along the first direction.

[0036] When testing the battery cell thermal runaway test device of the embodiment of the present invention, first, the top cover 2 is separated from the shell 1, and the battery cell to be tested is placed in the placement space between the first clamp 3 and the second clamp 4; then, at least one of the first clamp 3 and the second clamp 4 is moved along the first direction, so that the first clamp 3 and the second clamp 4 clamp the battery cell in the first direction; finally, the top cover 2 is installed on the opening of the shell 1 to seal the shell 1, and the temperature collection points on the top cover 2 are used to collect the temperature change of the top cover 2 when the battery cell thermal runaway occurs, so as to test the protection capability of the top cover 2 against thermal runaway of the battery cell.

[0037] Since at least one of the first clamping member 3 and the second clamping member 4 is positionally adjustable along the first direction, the size of the placement space between the first clamping member 3 and the second clamping member 4 in the first direction can be flexibly adjusted, so that battery cells of different specifications and sizes or different numbers can be placed in the placement space to meet the thermal runaway test of battery cells of different specifications and sizes or different numbers. Compared with the related art, there is no need to separately design a battery cell thermal runaway test device for battery cells of different specifications and sizes, and the structure is simple and the versatility is strong.

[0038] Therefore, the battery cell thermal runaway testing device according to the embodiment of the present invention has the advantage of strong versatility.

[0039] Optionally, a sealing ring is provided between the top cover 2 and the shell 1 to increase the sealing between the top cover 2 and the shell 1 .

[0040] Optionally, an explosion-proof valve 18 and an air pressure sensor 19 are provided on the side wall of the shell 1. The explosion-proof valve 18 is used to release the pressure of the shell 1 to prevent the shell 1 from exploding and injuring people due to excessive air pressure. The air pressure sensor 19 is used to detect the air pressure value in the shell.

[0041] Optionally, a ceramic composite tape 20 is provided on the top surface of the battery cell to provide insulation between the battery cell and the top cover 2 .

[0042] In some embodiments, the battery cell thermal runaway test device of the embodiment of the present invention further includes a first mounting plate 5 and a second mounting plate 6, which are spaced apart on the bottom wall of the housing 1 along the first direction. One end of the first mounting plate 5 away from the second mounting plate 6 in the first direction abuts against the side wall of the housing 1, and the first clamping member 3 is connected to the first mounting plate 5 in an adjustable position along the first direction. One end of the second mounting plate 6 away from the first mounting plate 5 in the first direction abuts against the side wall of the housing 1, and the second clamping member 4 is connected to the second mounting plate 6 in an adjustable position along the first direction.

[0043] For example, Figures 2 to 6 As shown, after the first clamping member 3 and the second clamping member 4 clamp the battery core, the first clamping member 3 and the second clamping member 4 will be subjected to a reaction force along the first direction toward the side wall of the housing 1, and the first clamping member 3 transmits the reaction force along the first direction to the first mounting plate 5, and the second clamping member 4 transmits the reaction force along the first direction to the second mounting plate 6. Since the end of the first mounting plate 5 close to the side wall of the housing 1 in the first direction abuts against the side wall of the housing 1, and the end of the second mounting plate 6 close to the side wall of the housing 1 in the first direction abuts against the side wall of the housing 1, the first mounting plate 5 can stably support the first clamping member 3, and the second mounting plate 6 can stably support the second clamping member 4. The first clamping member 3 and the second clamping member 4 do not need to be connected to the housing 1 through a connecting member, which can not only save the number of connecting members and the manufacturing cost, but also make the first mounting plate 5 and the second mounting plate 6 simple and convenient to assemble.

[0044] In some embodiments, the first clamping member 3 includes a first clamping plate 301 and a first adjustment plate 302 connected to each other, and the second clamping member 4 includes a second clamping plate 401 and a second adjustment plate 402 connected to each other, and the first clamping plate 301 and the second clamping plate 401 are arranged opposite to each other in a first direction to form a placement space. The first adjustment plate 302 is connected to the first mounting plate 5 in an adjustable position along the first direction, and the second adjustment plate 402 is connected to the second mounting plate 6 in an adjustable position along the first direction.

[0045] For example, Figure 2 As shown, the first clamping member 3 is provided with a first clamping plate 301, and the second clamping member 4 is provided with a second clamping plate 401, so as to increase the contact area between the first clamping member 3 and the second clamping member 4 and the battery cell, so as to improve the clamping stability of the first clamping member 3 and the second clamping member 4 on the battery cell, so as to avoid the battery cell from changing its position due to loose fixation during the thermal runaway test, thereby affecting the accuracy of the test result.

[0046] In addition, the first clamping member 3 is adjustably connected to the first mounting plate 5 by setting a first adjusting member, so that the first clamping member 3 is easy to adjust, and the second clamping member 4 is adjustably connected to the second mounting plate 6 by setting a second adjusting member, so that the second clamping member 4 is easy to adjust.

[0047] Optionally, the first adjustment plate 302 and the first clamping plate 301 are arranged in an L shape, and the first adjustment plate 302 is arranged on a side of the first clamping plate 301 away from the second clamping plate 401 in the first direction and parallel to the first mounting plate 5 .

[0048] like Figure 2 and Figure 3 As shown, the first adjustment plate 302 is arranged above the first mounting plate 5, so that the first mounting plate 5 supports the first adjustment plate 302, so as to adjust the position of the first adjustment plate 302 in the first direction. By arranging the first adjustment plate 302 and the first clamping plate 301 in an L shape, the first adjustment plate 302 is arranged on the side of the first clamping plate 301 away from the second clamping plate 401 in the first direction. When the first clamping plate 301 clamps the battery cell, the first adjustment plate 302 will not interfere with the battery cell, so that the first clamping member 3 can clamp the battery cell conveniently.

[0049] Optionally, the second adjustment plate 402 and the second clamping plate 401 are arranged in an L shape, and the second adjustment plate 402 is arranged on a side of the second clamping plate 401 away from the second clamping plate 401 in the first direction and parallel to the second mounting plate 6 .

[0050] like Figure 2 and Figure 3 As shown, the second adjustment plate 402 is arranged above the second mounting plate 6, so that the second mounting plate 6 supports the second adjustment plate 402, so as to adjust the position of the second adjustment plate 402 in the first direction. By arranging the second adjustment plate 402 and the second clamping plate 401 in an L shape, the second adjustment plate 402 is arranged on a side of the second clamping plate 401 away from the second clamping plate 401 in the first direction, when the second clamping plate 401 clamps the battery cell, the second adjustment plate 402 will not interfere with the battery cell, so that the second clamping member 4 is convenient to clamp.

[0051] In some embodiments, a first insulating member 7 is disposed on one side of the first clamping plate 301 close to the second clamping member 4 in the first direction.

[0052] It is understandable that the circuit formed by multiple battery cells is a high-voltage circuit of several hundred volts, which is harmful to the human body. In addition, in order to ensure the rigidity of the first clamping member 3, the first clamping member 3 is generally made of metal material. In order to avoid leakage of the high-voltage circuit formed between the multiple battery cells, a first insulating member 7 is provided on the first clamping plate 301. This can prevent the high voltage on the battery cell from being transmitted to the shell 1 through the first clamping member 3, causing high-voltage damage to the tester, which is beneficial to improving the test safety.

[0053] Optionally, a second insulating member 8 is provided on one side of the second clamping plate 401 close to the first clamping member 3 in the first direction. By providing the second insulating member 8 on the second clamping plate 401, it is possible to prevent the high voltage on the battery cell from being transmitted to the housing 1 through the second clamping member 4, thereby preventing the tester from being injured by the high voltage, thereby improving the safety of the test.

[0054] In some embodiments, the first mounting plate 5 has a first threaded hole 501, and the first adjustment plate 302 has a first through slot 3021 extending along the first direction. The battery cell thermal runaway test device further includes a first bolt 9, which passes through the first through slot 3021 and is connected to the first threaded hole 501, and the first bolt 9 is used to fasten the first adjustment plate 302.

[0055] Specifically, Figure 3 As shown, when it is necessary to adjust the position of the first adjustment plate 302 on the first mounting plate 5, the first bolt 9 can be loosened by a hexagonal wrench, and then the first clamping member 3 is moved to a suitable position along the first direction, and finally the first bolt 9 is tightened to complete the position adjustment of the first clamping member 3, so that the first clamping member 3 is easy to adjust.

[0056] In some embodiments, the second mounting plate 6 has a second threaded hole 601, and the second adjustment plate 402 has a second through slot 4021 extending along the first direction. The battery cell thermal runaway test device further includes a second bolt 11, which passes through the second through slot 4021 and is connected to the second threaded hole 601, and the second bolt 11 is used to fasten the second adjustment plate 402.

[0057] Specifically, Figure 3 As shown, when it is necessary to adjust the position of the second adjustment plate 402 on the second mounting plate 6, the second bolt 11 can be loosened by a hexagonal wrench, and then the second clamping member 4 is moved along the first direction to a suitable setting, and finally the second bolt 11 is tightened to complete the position adjustment of the second clamping member 4, so that the second clamping member 4 is easy to adjust.

[0058] In other embodiments, the first mounting plate 5 has a first T-slot 502 extending along the first direction, the opening of the first T-slot 502 is arranged toward the first adjustment plate 302, and the first adjustment plate 302 has a first through hole 3022. The battery cell thermal runaway test device further includes a first bolt 9 and a first nut 10, the bolt head of the first bolt 9 is slidably placed in the first T-slot 502 along the first direction, and the screw of the first bolt 9 passes through the first through hole 3022 and is connected to the first nut 10 to fasten the first adjustment plate 302.

[0059] Specifically, Figures 4 to 6 As shown, when it is necessary to adjust the position of the first adjustment plate 302 on the first mounting plate 5, the first nut 10 can be loosened by a wrench, and then the bolt head of the first bolt 9 can be moved along the first direction to the position of the first T-slot 502 to adjust the first clamping plate 301 to a suitable position, and finally the first nut 10 and the first bolt 9 are tightened to complete the position adjustment of the first clamping member 3, so that the first clamping member 3 is easy to adjust.

[0060] In other embodiments, the second mounting plate 6 has a second T-slot 602 extending along the first direction, the opening of the second T-slot 602 is arranged toward the second adjustment plate 402, and the second adjustment plate 402 has a second through hole 4022. The battery cell thermal runaway test device further includes a second bolt 11 and a second nut 12, the bolt head of the second bolt 11 is slidably placed in the second T-slot 602 along the first direction, and the screw rod of the second bolt 11 passes through the second through hole 4022 and is connected to the second nut 12 to fasten the second adjustment plate 402.

[0061] Specifically, Figures 4 to 6 As shown, when it is necessary to adjust the position of the second adjustment plate 402 on the second mounting plate 6, the second nut 12 can be loosened by a wrench, and then the bolt head of the second bolt 11 can be moved along the first direction to the position of the second T-slot 602 to adjust the second clamping plate 401 to a suitable position, and finally the second nut 12 and the second bolt 11 are tightened to complete the position adjustment of the second clamping member 4, so that the second clamping member 4 is easy to adjust.

[0062] In some embodiments, the battery cell thermal runaway testing device of the embodiment of the present invention also includes a first stop plate 13, which is arranged in an L-shape with the first mounting plate 5 and is arranged at one end of the first mounting plate 5 away from the first clamping member 3 in the first direction. The first stop plate 13 is arranged parallel to the first clamping plate 301 and stops on the side wall of the shell 1.

[0063] For example, Figures 2 to 4As shown, by providing a first abutment plate 13 at one end of the first mounting plate 5 away from the first clamping member 3 in the first direction to abut against the inner wall of the housing 1 , the installation stability of the first mounting plate 5 is improved.

[0064] In some embodiments, the second stop plate 14 and the second mounting plate 6 are arranged in an L shape and the second stop plate 14 is arranged at one end of the second mounting plate 6 away from the second clamping member 4 in the first direction. The second stop plate 14 is arranged parallel to the second clamping plate 401 and stops on the side wall of the shell 1.

[0065] like Figures 2 to 4 As shown, by providing a second abutment plate 14 at one end of the second mounting plate 6 away from the second clamping member 4 in the first direction to abut against the inner wall of the housing 1 , the installation stability of the second mounting plate 6 is improved.

[0066] In some embodiments, the battery cell thermal runaway testing device of the embodiment of the present invention further includes a support plate 15, which is disposed on the bottom wall of the shell 1 and is located between the first clamp 3 and the second clamp 4 in the first direction, and the support member is used to support the battery cell.

[0067] It should be noted that, since there are many parts in the battery pack, in order to more realistically simulate the available exhaust space volume inside the battery pack, a support plate 15 is provided in the shell 1 to support the battery cell, so that the space volume in the shell occupied by the support plate 1515 is equivalent to the space volume occupied by other parts in the battery pack, so that the exhaust space of the battery cell in the height direction of the shell is the same as the actual situation of the battery pack, which is further conducive to improving the test accuracy. Preferably, the support plate 15 is a steel plate.

[0068] In some embodiments, the battery cell thermal runaway test device of the embodiment of the present invention further includes a bottom cooling plate 16 and a side cooling plate 17. The bottom cooling plate 16 is provided on the top surface of the support plate 15 to cool the bottom of the battery cell, and the side cooling plate 17 is provided in the housing 1 to cool the side of the battery cell. By providing the bottom cooling plate 16 and the side cooling plate 17, the real environment inside the battery pack is further simulated, which is further conducive to improving the accuracy of the test results.

[0069] Optionally, a corrugated structure 21 made of polyoxyethylene (MPPE) material is provided between the support plate 15 and the bottom cooling plate 16 to simulate the structure of the bottom guard plate in the battery pack and simulate the actual structure in the battery pack to improve the test accuracy.

[0070] Optionally, a PC limiting strip 22 is provided on the top end surface of the bottom cooling plate 16 to facilitate the application of adhesive glue between the bottom end surface of the battery cell and the top end surface of the bottom cooling plate.

[0071] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0072] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0073] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0074] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0075] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0076] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A battery cell thermal runaway test device, characterized in that: include: A shell, wherein the top end of the shell has an opening; A top cover, the top cover is arranged on the opening of the shell and is connected with the shell in a cooperative manner, and a temperature collection point is arranged on the top cover; and A first clamping member and a second clamping member, wherein the first clamping member and the second clamping member are spaced apart along a first direction in the shell to define a placement space for placing the battery cell, and at least one of the first clamping member and the second clamping member is positionally adjustable along the first direction so that the first clamping member and the second clamping member clamp the battery cell in the first direction.

2. The battery cell thermal runaway test device according to claim 1, characterized in that: Also includes: A first mounting plate and a second mounting plate, the first mounting plate and the second mounting plate are spaced apart along the first direction on the inner bottom wall of the shell, one end of the first mounting plate away from the second mounting plate in the first direction abuts against the side wall of the shell, the first clamping member is positionally adjustable along the first direction to the first mounting plate, one end of the second mounting plate away from the first mounting plate in the first direction abuts against the side wall of the shell, and the second clamping member is positionally adjustable along the first direction to the second mounting plate.

3. The battery cell thermal runaway test device according to claim 2, characterized in that: The first clamping member includes a first clamping plate and a first adjustment plate connected to each other, the second clamping member includes a second clamping plate and a second adjustment plate connected to each other, the first clamping plate and the second clamping plate are arranged opposite to each other in the first direction to form the placement space, the first adjustment plate is connected to the first mounting plate in an adjustable position along the first direction, and the second adjustment plate is connected to the second mounting plate in an adjustable position along the first direction.

4. The battery cell thermal runaway test device according to claim 3, characterized in that: The first adjustment plate and the first clamping plate are arranged in an L shape, and the first adjustment plate is arranged on a side of the first clamping plate away from the second clamping plate in the first direction and parallel to the first mounting plate; The second adjustment plate and the second clamping plate are arranged in an L shape. The second adjustment plate is arranged on a side of the second clamping plate away from the second clamping plate in the first direction and parallel to the second mounting plate.

5. The battery cell thermal runaway test device according to claim 3, characterized in that: A first insulating member is provided on one side of the first clamping plate close to the second clamping member in the first direction; and / or A second insulating member is provided on one side of the second clamping plate close to the first clamping member in the first direction.

6. The battery cell thermal runaway test device according to claim 3, characterized in that: The first mounting plate has a first threaded hole, the first adjustment plate has a first through slot extending along the first direction, the battery cell thermal runaway test device further comprises a first bolt, the first bolt passes through the first through slot and is connected to the first threaded hole, the first bolt is used to fasten the first adjustment plate; and / or The second mounting plate has a second threaded hole, the second adjustment plate has a second through slot extending along the first direction, and the battery cell thermal runaway test device also includes a second bolt, the second bolt passes through the second through slot and is connected to the second threaded hole, and the second bolt is used to fasten the second adjustment plate.

7. The battery cell thermal runaway test device according to claim 3, characterized in that: The first mounting plate has a first T-shaped slot extending along the first direction, the opening of the first T-shaped slot is arranged toward the first adjustment plate, the first adjustment plate has a first through hole, the battery cell thermal runaway test device further comprises a first bolt and a first nut, the bolt head of the first bolt is slidably placed in the first T-shaped slot along the first direction, the screw rod of the first bolt passes through the first through hole and is connected to the first nut to fasten the first adjustment plate; and / or The second mounting plate has a second T-slot extending along the first direction, the opening of the second T-slot is arranged toward the second adjustment plate, the second adjustment plate has a second through hole, the battery cell thermal runaway test device also includes a second bolt and a second nut, the bolt head of the second bolt is slidably placed in the second T-slot along the first direction, the screw rod of the second bolt passes through the second through hole and is connected to the second nut to fasten the second adjustment plate.

8. The battery cell thermal runaway test device according to claim 2, characterized in that: Also includes: a first stop plate, the first stop plate and the first mounting plate are arranged in an L-shape and the first stop plate is arranged at one end of the first mounting plate away from the first clamping member in the first direction, the first stop plate is arranged parallel to the first clamping plate and stops on the side wall of the shell; and / or The second stop plate is arranged in an L shape with the second mounting plate and the second stop plate is arranged at one end of the second mounting plate away from the second clamping member in the first direction. The second stop plate is arranged parallel to the second clamping plate and stops on the side wall of the shell.

9. The battery cell thermal runaway test device according to any one of claims 1 to 8, characterized in that: It also includes a support plate, which is arranged on the inner bottom wall of the shell and is located between the first clamping member and the second clamping member in the first direction, and the support plate is used to support the battery core.

10. The battery cell thermal runaway test device according to claim 9, characterized in that: It also includes a bottom cooling plate and a side cooling plate. The bottom cooling plate is arranged on the top end surface of the support plate to cool the bottom of the battery cell, and the side cooling plate is arranged in the shell to cool the side of the battery cell.

Images