Battery thermal runaway testing device

Abstract

The utility model relates to the technical field of battery thermal safety, and discloses a battery thermal runaway testing device, which comprises a bracket main body, a first bracket and a second bracket which are arranged at an angle, and the first bracket and the second bracket are respectively provided with an installation space suitable for placing a tested battery; the pair of heating assemblies are arranged on the first support and the second support respectively, each heating assembly comprises a heating probe, an electrified coil is arranged in each heating probe, and the heating probes are arranged on the peripheral sides of the corresponding test batteries and are arranged at intervals with the corresponding test batteries. According to the utility model, the electrified coil is arranged in the heating probe, so that the heating probe can heat the tested battery in an induction heating mode, and thermal runaway triggering operation on the tested battery is completed; and secondly, the heating probe and the test battery are arranged at an interval, so that physical contact between the heating probe and the test battery can be avoided, introduction of extra energy is reduced, and the accuracy of temperature rise and propagation characteristic analysis of the thermal runaway test battery is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery thermal safety, and particularly relates to a battery thermal runaway test device. Background Technique

[0002] Battery thermal runaway test is an important evaluation method, aiming to deeply analyze the heat generation characteristics of the battery under specific conditions and the temperature diffusion law during thermal runaway, so as to provide scientific basis and reliable data for the safety design of the battery.

[0003] Taking the method of heating to trigger thermal runaway as an example, the current heating method to trigger thermal runaway is to paste a heating sheet on the battery to be tested. However, since the heating sheet needs to be pasted and fixed on the surface of the test battery, and the heating sheet itself has a certain area, extra energy will be introduced during the test, affecting the accuracy of the test results. Content of the Utility Model

[0004] In view of this, the utility model provides a battery thermal runaway test device to solve the problem that the test method of using a heating sheet to trigger thermal runaway in the related technology affects the accuracy of the test results.

[0005] The utility model provides a battery thermal runaway test device, including:

[0006] A bracket main body, including a first bracket and a second bracket arranged at an angle, and both the first bracket and the second bracket are provided with installation spaces suitable for placing test batteries;

[0007] A pair of heating components, respectively arranged on the first bracket and the second bracket, the heating component includes a heating probe, an energized coil is arranged in the heating probe, and the heating probe is arranged on the periphery of the corresponding test battery and is spaced from the corresponding test battery.

[0008] Beneficial effects: By arranging an energized coil in the heating probe, the utility model enables the heating probe to heat the test battery by induction heating to complete the thermal runaway triggering operation of the test battery; secondly, compared with the current scheme of pasting a heating sheet on the test battery, the utility model arranges the heating probe at a distance from the test battery, which can avoid physical contact between the heating probe and the test battery, reduce the introduction of extra energy, and improve the accuracy of analyzing the temperature rise and propagation characteristics of the thermal runaway test battery. Moreover, since the heating probe does not need to contact the test battery, it can not only simplify the assembly process of the battery thermal runaway test device and the test battery, but also simplify the structure of the battery thermal runaway test device itself. Finally, since heating components are arranged on both the first bracket and the second bracket, the battery thermal runaway test device can simultaneously perform thermal runaway tests on two test batteries, thus improving the test efficiency.

[0009] In an alternative embodiment, the first bracket includes a pair of oppositely arranged first mounting plates and a first connecting plate connecting the pair of first mounting plates, and an installation space of the first bracket is formed between the pair of first mounting plates; the second bracket includes a pair of oppositely arranged second mounting plates and a second connecting plate connecting the pair of second mounting plates, and an installation space of the second bracket is formed between the pair of second mounting plates; a pair of the heating components are respectively arranged on the pair of first mounting plates and the pair of second mounting plates.

[0010] Advantageous effects: By adopting a design of a pair of oppositely arranged first mounting plates and second mounting plates and connecting them with the first connecting plate and the second connecting plate, the present utility model can enhance the structural stability of the bracket body, and ensure that the test battery and the heating components can be stably mounted on the bracket body. Secondly, by forming the installation spaces for the respective test batteries between the pair of first mounting plates and between the pair of second mounting plates, a clear installation position and space can be provided for the test battery, and the installation process can be made more concise and clear, improving the installation efficiency and accuracy.

[0011] In an alternative embodiment, the first connecting plate is perpendicularly arranged to the second connecting plate, and an outer side surface of the first connecting plate is attached to and fixedly connected with an inner side surface of the second connecting plate.

[0012] Advantageous effects: By perpendicularly arranging and fixedly connecting the first connecting plate and the second connecting plate, the present utility model can, on the one hand, make the structure of the battery thermal runaway test device more compact and reduce the space occupied during the test process; on the other hand, it can enhance the rigidity and stability of the entire bracket body and reduce the possibility of deformation.

[0013] In an alternative embodiment, first grooves are provided on surfaces of the pair of first mounting plates close to each other, and second grooves are provided on surfaces of the pair of second mounting plates close to each other, and shapes of the first grooves and the second grooves are adapted to cross-sectional shapes of corresponding test batteries.

[0014] Advantageous effects: By providing the first grooves adapted to the shape of the test battery on the pair of first mounting plates and the second grooves adapted to the shape of the test battery on the pair of second mounting plates, the present utility model can, on the one hand, firmly and stably arrange the test battery in the installation space on the bracket body and reduce the possibility of the test battery falling off the bracket body during the test; on the other hand, it can ensure accurate alignment of the test battery during installation and reduce the possibility of operation errors.

[0015] In an alternative embodiment, the heating assembly further includes a mounting rod and a connecting rod slidably connected to the mounting rod. A pair of the mounting rods are respectively arranged on a pair of the first mounting plates and a pair of the second mounting plates. One end of the connecting rod is connected to the corresponding heating probe, and the other end is provided with a sliding sleeve sleeved on the corresponding mounting rod.

[0016] Beneficial effects: Through the sliding connection design of the mounting rod and the connecting rod in the heating assembly of the present utility model, researchers can easily adjust the relative position relationship between the heating probe and the test battery according to actual needs, and complete the test of triggering thermal runaway by heating multiple points on the same test battery. In this way, comprehensive test data can be obtained, providing a scientific basis for the improvement direction of subsequent battery safety design. In addition, compared with the current test scheme of pasting a heating sheet on the test battery, the mounting rod and the connecting rod in the heating assembly provide a stable support structure for the heating probe, so the possibility of relative displacement between the heating probe and the test battery during the test can be reduced, ensuring the accuracy of the test results.

[0017] In an alternative embodiment, through holes adapted for the current leads to pass through are provided on the bottom surfaces of the first groove and the second groove, and the current leads are adapted to be connected to the corresponding test batteries; third grooves are further provided on the mutually approaching surfaces of a pair of the first mounting plates. The third grooves are located on the periphery of the first groove and are adapted to the shape of the corresponding heating probe and the shape of the corresponding connecting rod; fourth grooves are further provided on the mutually approaching surfaces of a pair of the second mounting plates. The fourth grooves are located on the periphery of the second groove and are adapted to the shape of the corresponding heating probe and the shape of the corresponding connecting rod.

[0018] Beneficial effects: By respectively providing the third grooves and the fourth grooves adapted to the shape of the heating probe and the shape of the connecting rod on the first mounting plate and the second mounting plate, the present utility model can achieve the storage of the heating probe and avoid interference of the heating probe on other tests of the test battery. In addition, by providing through holes adapted for the current leads to pass through on the bottom surfaces of the first groove and the second groove, researchers can quickly connect the current leads to the test battery through the through holes, so that researchers can directly carry out conventional charge and discharge tests and overcharge thermal runaway tests on the test battery through the battery thermal runaway test device of the present utility model without replacing the test device.

[0019] In an alternative embodiment, the through hole is a stepped hole. The large end of the stepped hole is adapted to accommodate the positive electrode protrusion of the test battery, and the small end of the stepped hole is adapted to pass through the current lead.

[0020] Beneficial effects: By setting the through hole as a stepped hole and arranging the positive convex part of the test battery within the large end of the stepped hole, the present utility model can, on the one hand, accurately position the test battery, and on the other hand, restrict the movement of the test battery through the physical structure. Further, by threading a current lead within the small end of the stepped hole, a guiding structure for the current lead can be formed at the small end of the stepped hole, enabling the current lead to be connected to the test battery within a short time and improving the working efficiency.

[0021] In an optional embodiment, both the first connecting plate and the second connecting plate are telescopic plates, and both the mounting rod and the connecting rod are telescopic rods.

[0022] Beneficial effects: By setting the first connecting plate and the second connecting plate as telescopic plates and setting the mounting rod and the connecting rod as telescopic rods, the present utility model can make the battery thermal runaway test device adapt to more test batteries of different sizes, improving the versatility of the battery thermal runaway test device.

[0023] In an optional embodiment, the shape of the first groove is square, the shape of the second groove is circular, the shape of the third groove is adapted to the shape of the first groove, and the shape of the fourth groove is adapted to the shape of the second groove.

[0024] Beneficial effects: By setting the shape of the first groove as square, setting the shape of the second groove as circular, and also making the shape of the third groove adapted to the shape of the first groove and the shape of the fourth groove adapted to the shape of the second groove, the battery thermal runaway test device can simultaneously conduct thermal runaway tests on two different types of test batteries, namely square batteries and cylindrical batteries. In this way, not only the test efficiency is improved, but also the versatility and compatibility of the battery thermal runaway test device can be enhanced.

[0025] In an optional embodiment, it further includes a camera assembly. The camera assembly includes a support rod and a camera slidably connected to the support rod. The support rod is disposed on the first bracket or the second bracket, and the camera is used to monitor the test battery on the first bracket or the second bracket.

[0026] Beneficial effects: By providing a camera assembly on the first bracket or the second bracket, the present utility model can capture and record the state changes of the test battery during the thermal runaway test in real time, obtaining more comprehensive and accurate information. In this way, researchers can more accurately analyze the thermal runaway process of the test battery and evaluate the safety performance of the test battery, and provide scientific data support for the subsequent continuous optimization and upgrading of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0028] Figure 1 Structural schematic diagram of a battery thermal runaway test device according to an embodiment of the present invention;

[0029] Figure 2 For Figure 1 Structural schematic diagram of the first bracket shown in;

[0030] Figure 3 For Figure 1 Structural schematic diagram of the second bracket shown in;

[0031] Figure 4 Structural schematic diagram of a heating component according to an embodiment of the present invention;

[0032] Figure 5 Structural schematic diagram of another heating component according to an embodiment of the present invention;

[0033] Figure 6 For Figure 4 Structural schematic diagram of the heating probe shown in;

[0034] Figure 7 Assembly schematic diagram of a heating component and the first bracket according to an embodiment of the present invention;

[0035] Figure 8 For Figure 5 Structural schematic diagram of the heating probe shown in;

[0036] Figure 9 Assembly schematic diagram of a heating component and the second bracket according to an embodiment of the present invention;

[0037] Figure 10 Assembly schematic diagram of the battery thermal runaway test device and the test battery according to an embodiment of the present invention;

[0038] Figure 11 Another assembly schematic diagram of the battery thermal runaway test device and the test battery according to an embodiment of the present invention;

[0039] Figure 12 Assembly schematic diagram of a camera component and the first bracket according to an embodiment of the present invention.

[0040] Explanation of reference numerals:

[0041] 1. Bracket main body; 101. First bracket; 1011. First mounting plate; 1012. First connecting plate; 10121. Outer side; 1013. First groove; 1014. Third groove; 1015. Through hole; 102. Second bracket; 1021. Second mounting plate; 1022. Second connecting plate; 10221. Inner side; 1023. Second groove; 1024. Fourth groove; 2. Heating assembly; 201. Heating probe; 202. Mounting rod; 203. Connecting rod; 204. Sliding sleeve; 3. Camera assembly; 301. Support rod; 302. Camera; 4. Test battery. Detailed implementation manners

[0042] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0043] If the background art part does not describe the defects of the prior art in detail, the defects of the prior art will be analyzed in detail here to introduce the present solution.

[0044] Aiming at the problem that the test method of using a heating sheet to trigger thermal runaway in the related art will affect the accuracy of the test results, the present utility model provides a battery thermal runaway test device.

[0045] The following will be combined with Figures 1 to 11 , to describe the embodiments of the present utility model.

[0046] According to the embodiments of the present utility model, as Figures 1 to 9 shown, a battery thermal runaway test device is provided, including: a bracket main body 1 and a pair of heating assemblies 2.

[0047] Specifically, the bracket main body 1 includes a first bracket 101 and a second bracket 102 arranged at an angle, and both the first bracket 101 and the second bracket 102 are provided with mounting spaces suitable for placing the test battery 4; a pair of heating assemblies 2 are respectively arranged on the first bracket 101 and the second bracket 102, and the heating assembly 2 includes a heating probe 201, an energizing coil is arranged in the heating probe 201, and the heating probe 201 is arranged on the periphery of the corresponding test battery 4 and is spaced from the corresponding test battery 4.

[0048] In the embodiment of the present utility model, an energized coil is arranged inside the heating probe 201, so that the heating probe 201 can heat the test battery 4 by induction heating to complete the thermal runaway triggering operation of the test battery 4. Secondly, compared with the current solution of pasting a heating sheet on the test battery 4, in the embodiment of the present utility model, the heating probe 201 and the test battery 4 are arranged at intervals, which can avoid physical contact between the heating probe 201 and the test battery 4, reduce the introduction of extra energy, and improve the accuracy of the temperature rise and propagation characteristic analysis of the test battery 4 during thermal runaway. Moreover, since the heating probe 201 does not need to contact the test battery 4, not only can the assembly process of the battery thermal runaway test device and the test battery 4 be simplified, but also the structure of the battery thermal runaway test device itself can be simplified. Finally, since the heating components 2 are arranged on both the first bracket 101 and the second bracket 102, the battery thermal runaway test device can simultaneously perform thermal runaway tests on two test batteries 4, thereby improving the test efficiency.

[0049] It should be noted that since the heating probe 201 in this embodiment realizes the induction heating of the test battery 4 by supplying alternating current to the energized coil inside it. Therefore, by changing the magnitude and frequency of the supplied current, the heating speed and the magnitude of the temperature rise of the test battery 4 can be flexibly controlled, and thus more comprehensive and accurate test data can be obtained.

[0050] According to an embodiment of the present utility model, as Figures 1 to 3 shown, the first bracket 101 includes a pair of relatively arranged first mounting plates 1011 and a first connecting plate 1012 connecting the pair of first mounting plates 1011. An installation space of the first bracket 101 is formed between the pair of first mounting plates 1011; the second bracket 102 includes a pair of relatively arranged second mounting plates 1021 and a second connecting plate 1022 connecting the pair of second mounting plates 1021. An installation space of the second bracket 102 is formed between the pair of second mounting plates 1021; a pair of heating components 2 are respectively arranged on the pair of first mounting plates 1011 and the pair of second mounting plates 1021. In the embodiment of the present utility model, by adopting the design of a pair of relatively arranged first mounting plates 1011 and second mounting plates 1021 and connecting them with the first connecting plate 1012 and the second connecting plate 1022, the structural stability of the bracket main body 1 can be enhanced, ensuring that the test battery 4 and the heating component 2 can be stably installed on the bracket main body 1. Secondly, forming the installation spaces for the respective test batteries 4 between the pair of first mounting plates 1011 and between the pair of second mounting plates 1021 can provide clear installation positions and spaces for the test batteries 4, and make the installation process more concise and clear, improving the installation efficiency and accuracy.

[0051] According to an embodiment of the present utility model, as Figures 1 to 3 、Figure 10 and Figure 11 As shown in Figure 11 , the first connecting plate 1012 and the second connecting plate 1022 are perpendicularly arranged, and the outer side surface 10121 of the first connecting plate 1012 is attached to and fixedly connected with the inner side surface 10221 of the second connecting plate 1022. In the embodiment of the present utility model, the first connecting plate 1012 and the second connecting plate 1022 are perpendicularly arranged and fixedly connected. On the one hand, it can make the structure of the battery thermal runaway test device more compact and reduce the space occupied during the test process; on the other hand, it can enhance the rigidity and stability of the entire bracket main body 1 and reduce the possibility of deformation.

[0052] It should be noted that in this embodiment, the outer side surface 10121 of the first connecting plate 1012 is the side of the first connecting plate 1012 away from a pair of first mounting plates 1011, and the inner side surface 10221 of the second connecting plate 1022 in this embodiment is the side of the second connecting plate 1022 close to a pair of second mounting plates 1021.

[0053] According to an embodiment of the present utility model, as Figure 2 and Figure 3 shown in Figure 3 , first grooves 1013 are provided on the surfaces of a pair of first mounting plates 1011 close to each other, and second grooves 1023 are provided on the surfaces of a pair of second mounting plates 1021 close to each other. The shapes of the first grooves 1013 and the second grooves 1023 are adapted to the cross-sectional shape of the corresponding test battery 4. In the embodiment of the present utility model, by providing the first grooves 1013 adapted to the shape of the test battery 4 on a pair of first mounting plates 1011 and the second grooves 1023 adapted to the shape of the test battery 4 on a pair of second mounting plates 1021, on the one hand, the test battery 4 can be firmly and stably arranged in the installation space on the bracket main body 1, reducing the possibility of the test battery 4 falling off the bracket main body 1 during the test process; on the other hand, it can ensure the accurate alignment of the test battery 4 during installation and reduce the possibility of operation errors.

[0054] According to an embodiment of the present utility model, as Figure 4 and Figure 5As shown, the heating assembly 2 further includes mounting rods 202 and connecting rods 203 that are slidably connected to the mounting rods 202. A pair of mounting rods 202 are respectively arranged on a pair of first mounting plates 1011 and a pair of second mounting plates 1021. One end of the connecting rod 203 is connected to the corresponding heating probe 201, and the other end is provided with a sliding sleeve 204 sleeved on the corresponding mounting rod 202. Through the sliding connection design of the mounting rods 202 and the connecting rods 203 in the heating assembly 2 in the embodiment of the present invention, researchers can easily adjust the relative position relationship between the heating probe 201 and the test battery 4 according to actual needs, and complete the test of multi-point heating and triggering thermal runaway of the same test battery 4. In this way, comprehensive test data can be obtained, providing a scientific basis for the improvement direction of subsequent battery safety design. In addition, compared with the current test scheme of pasting a heating sheet on the test battery 4, the mounting rods 202 and the connecting rods 203 in the heating assembly 2 provide a stable support structure for the heating probe 201, so the possibility of relative displacement between the heating probe 201 and the test battery 4 during the test can be reduced, ensuring the accuracy of the test results.

[0055] It can be understood that, in order to complete the test of multi-point heating and triggering thermal runaway of the battery in a short time, multiple heating probes 201 can be arranged at intervals on the sliding rod. Further, in order to improve the flexibility of the position of the heating probe 201, the heating probe 201 can be slidably connected to the mounting rod 202 through the corresponding connecting rod 203.

[0056] According to an embodiment of the present invention, as Figures 1 to 3As shown, through holes 1015 adapted for current leads to pass through are provided on the bottom surfaces of the first groove 1013 and the second groove 1023. The current leads are adapted to be connected to the corresponding test battery 4. Third grooves 1014 are further provided on the mutually approaching surfaces of a pair of first mounting plates 1011. The third grooves 1014 are located on the periphery of the first groove 1013 and are adapted to the shape of the corresponding heating probe 201 and the shape of the corresponding connecting rod 203. Fourth grooves 1024 are further provided on the mutually approaching surfaces of a pair of second mounting plates 1021. The fourth grooves 1024 are located on the periphery of the second groove 1023 and are adapted to the shape of the corresponding heating probe 201 and the shape of the corresponding connecting rod 203. In the embodiment of the present utility model, by providing the third grooves 1014 and the fourth grooves 1024 on the first mounting plate 1011 and the second mounting plate 1021 respectively, which are adapted to the shape of the heating probe 201 and the shape of the connecting rod 203, the accommodation of the heating probe 201 can be realized, and interference of the heating probe 201 on other tests of the test battery 4 can be avoided. In addition, by providing the through holes 1015 adapted for current leads to pass through on the bottom surfaces of the first groove 1013 and the second groove 1023, researchers can quickly connect the current leads to the test battery 4 through the through holes 1015, so that researchers can directly carry out conventional charge and discharge tests and overcharge thermal runaway tests on the test battery 4 by using the battery thermal runaway test device of the embodiment of the present utility model without replacing the test device.

[0057] It can be understood that, as Figure 7 and Figure 9 shown, since there are third grooves 1014 on both of the pair of first mounting plates 1011 and fourth grooves 1024 on both of the pair of second mounting plates 1021, two heating probes 201 can be provided on the corresponding mounting rods 202 respectively. In this way, not only can the test efficiency be improved, but also the two heating probes 201 can be timely accommodated to avoid interference on subsequent other tests.

[0058] It should be noted that since the battery thermal runaway test device of the present utility model can perform thermal runaway tests, conventional charge and discharge tests, and overcharge thermal runaway tests on one or two test batteries 4. Therefore, researchers can combine the above test methods according to actual needs. Some combination methods are described below:

[0059] Example 1:

[0060] As shown in Figure 11, when the heating probe 201 on the first bracket 101 is in the third groove 1014 and the heating probe 201 on the second bracket 102 is in the fourth groove 1024, the test batteries 4 on the first bracket 101 and the second bracket 102 can be simultaneously subjected to battery conventional charge and discharge tests and overcharge thermal runaway tests.

[0061] Example 2:

[0062] As Figure 10 shown, since the heating probe 201 can be slidably connected to the mounting rod 202 through the connecting rod 203, by changing the relative position relationship between the heating probe 201 and the test battery 4, the thermal runaway characteristics of the thermal runaway battery triggered by different heating points, heating rates, etc. can be studied.

[0063] Example 3:

[0064] When the heating probe 201 on the first bracket 101 is in the third groove 1014 and the heating probe 201 on the second bracket 102 is on the periphery of the corresponding test battery 4, the test battery 4 on the first bracket 101 can be subjected to a conventional battery charge and discharge test, and the test battery 4 on the second bracket 102 can be subjected to a thermal runaway test, so as to study the coupling relationship between the two.

[0065] According to an embodiment of the present invention, the through hole 1015 is a stepped hole. The large end of the stepped hole is adapted to accommodate the positive electrode protrusion of the test battery 4, and the small end of the stepped hole is adapted to pass through the current lead. By setting the through hole 1015 as a stepped hole and arranging the positive electrode protrusion of the test battery 4 in the large end of the stepped hole, on the one hand, the test battery 4 can be accurately positioned, and on the other hand, the movement of the test battery 4 can be restricted by the physical structure. Further, by passing the current lead through the small end of the stepped hole, a guiding structure for the current lead can be formed at the small end of the stepped hole, so that the current lead can be connected to the test battery 4 in a short time, improving the work efficiency.

[0066] According to an embodiment of the present invention, as Figures 1 to 5 shown, both the first connecting plate 1012 and the second connecting plate 1022 are telescopic plates, and both the mounting rod 202 and the connecting rod 203 are telescopic rods. By setting the first connecting plate 1012 and the second connecting plate 1022 as telescopic plates and setting the mounting rod 202 and the connecting rod 203 as telescopic rods, the battery thermal runaway test device can be adapted to more test batteries 4 of different sizes, improving the versatility of the battery thermal runaway test device.

[0067] It should be noted that since the connecting rod 203 is a telescopic rod, the length of the telescopic rod can be adjusted to change the relative position relationship between each point on the heating probe 201 and the test battery 4, and further the heating rate of the corresponding points on the test battery 4 can be changed.

[0068] According to an embodiment of the present invention, as Figures 1 to 3 、 Figure 10 and Figure 11As shown in the figure, the shape of the first groove 1013 is square, the shape of the second groove 1023 is circular, the shape of the third groove 1014 is adapted to the shape of the first groove 1013, and the shape of the fourth groove 1024 is adapted to the shape of the second groove 1023. In the embodiment of the present invention, the shape of the first groove 1013 is set to be square, the shape of the second groove 1023 is set to be circular, and at the same time, the shape of the third groove 1014 is adapted to the shape of the first groove 1013, and the shape of the fourth groove 1024 is adapted to the shape of the second groove 1023, so that the battery thermal runaway test device can simultaneously perform thermal runaway tests on two different types of test batteries 4, namely square batteries and cylindrical batteries. In this way, not only the test efficiency is improved, but also the versatility and compatibility of the battery thermal runaway test device can be improved.

[0069] It should be noted that when the shape of the first groove 1013 is square, the shape of the third groove 1014 and the shape of the heating probe 201 provided on the first bracket 101 can be square or U-shaped, as long as the heating probe 201 can heat the test battery 4 on the first bracket 101 without contacting the test battery 4. Similarly, when the shape of the second groove 1023 is circular, the shape of the fourth groove 1024 and the shape of the heating probe 201 provided on the second bracket 102 can be circular or arc-shaped, as long as the heating probe 201 can heat the test battery 4 on the second bracket 102 without contacting the test battery 4. In this regard, the present invention does not limit the shape of the heating probe 201.

[0070] According to an embodiment of the present invention, as Figure 12 shown, it further includes a camera assembly 3. The camera assembly 3 includes a support rod 301 and a camera 302 slidably connected to the support rod 301. The support rod 301 is provided on the first bracket 101 or the second bracket 102, and the camera 302 is used to monitor the test battery 4 on the first bracket 101 or the second bracket 102. By providing the camera assembly 3 on the first bracket 101 or the second bracket 102, the embodiment of the present invention can capture and record the state changes of the test battery 4 during the thermal runaway test in real time, obtain more comprehensive and accurate information. In this way, researchers can more accurately analyze the thermal runaway process of the test battery 4 and evaluate the safety performance of the test battery 4, and provide scientific data support for the subsequent continuous optimization and upgrade of the battery.

[0071] It can be understood that since the first connecting plate 1012, the second connecting plate 1022, the mounting rod 202, and the connecting rod 203 all have the characteristics of being telescopic, in order to enable the camera assembly 3 to better monitor the test battery 4 of different sizes, the support rod 301 can also be set as a telescopic rod.

[0072] Although embodiments of the present utility model have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present utility model, and such modifications and variations fall within the scope defined by the appended claims.

Claims

1. A battery thermal runaway test device, characterized in that: include: A support body (1) comprises a first support (101) and a second support (102) arranged at an angle, wherein both the first support (101) and the second support (102) are provided with an installation space suitable for placing a test battery (4); A pair of heating components (2) are respectively arranged on the first bracket (101) and the second bracket (102), the heating components (2) comprising a heating probe (201), the heating probe (201) having an energized coil therein, the heating probe (201) being arranged on the peripheral side of a corresponding test battery (4) and spaced apart from the corresponding test battery (4).

2. The battery thermal runaway test device according to claim 1, characterized in that: The first bracket (101) comprises a pair of first mounting plates (1011) arranged opposite to each other and a first connecting plate (1012) connecting the pair of first mounting plates (1011), and an installation space for the first bracket (1011) is formed between the pair of first mounting plates (1011); the second bracket (102) comprises a pair of second mounting plates (1021) arranged opposite to each other and a second connecting plate (1022) connecting the pair of second mounting plates (1021), and an installation space for the second bracket (102) is formed between the pair of second mounting plates (1021); and a pair of the heating components (2) are respectively arranged on the pair of the first mounting plates (1011) and the pair of the second mounting plates (1021).

3. The battery thermal runaway testing device according to claim 2, characterized in that: The first connecting plate (1012) and the second connecting plate (1022) are arranged vertically, and the outer side surface (10121) of the first connecting plate (1012) and the inner side surface (10221) of the second connecting plate (1022) are attached to and fixedly connected with each other.

4. The battery thermal runaway test device according to claim 3, characterized in that: A pair of first mounting plates (1011) are provided with a first groove (1013) on surfaces close to each other, and a pair of second mounting plates (1021) are provided with a second groove (1023) on surfaces close to each other, and the shapes of the first groove (1013) and the second groove (1023) are adapted to the cross-sectional shapes of the corresponding test batteries (4).

5. The battery thermal runaway test device according to claim 4, characterized in that: The heating assembly (2) further comprises a mounting rod (202) and a connecting rod (203) slidably connected to the mounting rod (202); a pair of the mounting rods (202) are respectively arranged on a pair of the first mounting plates (1011) and a pair of the second mounting plates (1021); one end of the connecting rod (203) is connected to the corresponding heating probe (201), and the other end is provided with a sliding sleeve (204) sleeved on the corresponding mounting rod (202).

6. The battery thermal runaway test device according to claim 5, characterized in that: A through hole (1015) suitable for a current lead to pass through is provided on the bottom of the first groove (1013) and the second groove (1023), and the current lead is suitable for connecting to the corresponding test battery (4); a third groove (1014) is also provided on the surfaces of the pair of first mounting plates (1011) close to each other, and the third groove (1014) is located on the peripheral side of the first groove (1013) and is adapted to the shape of the corresponding heating probe (201) and the shape of the corresponding connecting rod (203); a fourth groove (1024) is also provided on the surfaces of the pair of second mounting plates (1021) close to each other, and the fourth groove (1024) is located on the peripheral side of the second groove (1023) and is adapted to the shape of the corresponding heating probe (201) and the shape of the corresponding connecting rod (203).

7. The battery thermal runaway test device according to claim 6, characterized in that: The through hole (1015) is a stepped hole, the large end of the stepped hole is suitable for accommodating the positive electrode protrusion of the test battery (4), and the small end of the stepped hole is suitable for passing the current lead.

8. The battery thermal runaway test device according to claim 6, characterized in that: The first connecting plate (1012) and the second connecting plate (1022) are both telescopic plates, and the mounting rod (202) and the connecting rod (203) are both telescopic rods.

9. The battery thermal runaway testing device according to claim 6, characterized in that: The shape of the first groove (1013) is square, the shape of the second groove (1023) is circular, the shape of the third groove (1014) is compatible with the shape of the first groove (1013), and the shape of the fourth groove (1024) is compatible with the shape of the second groove (1023).

10. The battery thermal runaway testing device according to any one of claims 1 to 9, characterized in that: The invention also comprises a camera assembly (3), wherein the camera assembly (3) comprises a support rod (301) and a camera (302) slidably connected to the support rod (301), wherein the support rod (301) is arranged on the first bracket (101) or the second bracket (102), and the camera (302) is used to monitor the test battery (4) on the first bracket (101) or the second bracket (102).

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