Telescopic support for adiabatic acceleration calorimeter and battery thermal runaway test structure

Abstract

The utility model discloses a telescopic bracket for a heat insulation acceleration calorimeter and a battery thermal runaway test structure, which adopt a liftable bracket and a telescopic frame consisting of two longitudinal frame edges, two transverse frame edges and a middle connecting beam, the five trays which are respectively arranged on the top surfaces of the two ends of the two longitudinal frame edges and the top surface of the central part of the middle connecting beam are used for supporting the tested battery, so that the lifting in the height direction and the scaling of the bearing area of the tested battery are realized, and the battery thermal runaway test device is suitable for the tested battery to be subjected to a battery thermal runaway test through a BTC-500 adiabatic acceleration calorimeter; moreover, the testing device can be suitable for tested batteries of different models and sizes to maximize the bearing area of the tested batteries, so that the problems of inclination and falling of the tested batteries caused by thermal expansion in the testing process are avoided, and the accuracy of a testing result is ensured.

Description

Technical Field

[0001] The utility model relates to an auxiliary tool for carrying out battery thermal runaway tests with a BTC-500 adiabatic accelerated calorimeter, specifically a retractable bracket for an adiabatic accelerated calorimeter and a battery thermal runaway test structure. Background Technique

[0002] With the rapid development of electronic devices in the fields of electric vehicles, grid energy storage systems, and low-altitude economy, their safety has become the biggest focus of the industry. As a key component of the electrical energy storage system, the performance requirements for batteries are increasing day by day. Once the battery thermal runaway problem occurs, it may cause serious fire and explosion problems. Existing battery thermal runaway test equipment, such as adiabatic accelerated calorimeters (ARC), plays an important role in battery safety performance evaluation. However, during the process of carrying out battery thermal runaway tests, how to stably and accurately fix the battery sample, adapt to batteries of different specifications, sizes, and shapes, and ensure that it will not tilt or fall due to volume expansion caused by heat during the test has become an urgent problem to be solved.

[0003] Although the triangular bracket for the BTC-500 adiabatic accelerated calorimeter provided by existing manufacturers has a simple structure, there are many deficiencies in practical applications. On the one hand, its fixing method is relatively single, the bearing surface area is small, and it cannot be flexibly adjusted according to the battery size, which may cause large-sized batteries to tilt and fall due to heat expansion during the test, affecting the thermal runaway test results; on the other hand, pasting heat insulation cotton at the four corners of the triangular bracket may cause uneven thickness, and multiple cutting and installation also cause inconvenience in operation and waste of resources. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is: to provide a retractable bracket for an adiabatic accelerated calorimeter and a battery thermal runaway test structure.

[0005] To solve the above technical problems, the technical solutions adopted by the utility model are as follows:

[0006] A telescopic bracket for an adiabatic accelerating calorimeter, characterized in that it comprises: a telescopic frame supported on a liftable bracket; the telescopic frame is composed of two longitudinal frame edges, two transverse frame edges and an intermediate connecting beam. Socket parts are provided at both ends of the two longitudinal frame edges. The two ends of one of the transverse frame edges are respectively in sliding fit with the socket parts on the same side of the two longitudinal frame edges in the transverse direction, and the two ends of the other transverse frame edge are respectively in sliding fit with the socket parts on the other side of the two longitudinal frame edges in the transverse direction. And a sliding position locking mechanism is provided between the end of the transverse frame edge and the corresponding socket part; the intermediate connecting beam is fixedly connected between the two transverse frame edges; moreover, trays for placing heat insulation cotton are provided on the top surfaces of both ends of the two longitudinal frame edges and the center part of the top surface of the intermediate connecting beam. Each tray is in the same horizontal plane, and the sizes and shapes of the trays preferably remain the same.

[0007] Preferably: the sliding position locking mechanism is: a plurality of locking holes are arranged at intervals in the transverse direction at the end of the transverse frame edge, a locking block adapted to the locking holes is arranged on the inner wall of the socket part, and the position of the transverse frame edge and the socket part is locked by the locking block being inserted into the locking holes. Thus, by adjusting the locking block to be inserted into different locking holes, the telescopic adjustment of the telescopic frame can be realized, so as to change the bearing area surrounded by each tray, thereby adapting to different models and sizes of the batteries to be tested.

[0008] Preferably: rollers are provided between the transverse frame edge and the socket part to reduce the friction between the two and make the telescoping smoother.

[0009] Preferably: the intermediate connecting beam is in an H shape, and grooves are provided on the bottom surfaces of the longitudinal frame edge and the intermediate connecting beam to reduce the weight of the telescopic frame while ensuring that the telescopic frame has sufficient strength to support the battery to be tested, and it is convenient to move.

[0010] Preferably: the liftable bracket is: four telescopic feet with a telescopic height locking function respectively installed on the bottom surfaces of both ends of the two longitudinal frame edges.

[0011] Preferably: lockable casters are installed at the bottom of the telescopic feet, so that after the telescopic bracket for the adiabatic accelerating calorimeter can be conveniently pushed into the central test position in the BTC-500 adiabatic accelerating calorimeter through the lockable casters, by locking the lockable casters, the telescopic bracket for the adiabatic accelerating calorimeter will not move, avoiding scratching the bottom of the BTC-500 adiabatic accelerating calorimeter.

[0012] Preferably: both the liftable bracket and the telescopic frame are made of stainless steel material to ensure compressive resistance and heat resistance.

[0013] A battery thermal runaway test structure, comprising: a BTC-500 adiabatic accelerating calorimeter, a battery under test, and a support frame for supporting the battery under test;

[0014] It is characterized in that: the support frame is a telescopic support for the adiabatic accelerating calorimeter;

[0015] The telescopic support for the adiabatic accelerating calorimeter is placed at the central test position inside the BTC-500 adiabatic accelerating calorimeter. The height of the telescopic frame is adjusted by a liftable support, so that the top surfaces of each tray are at the test height of the BTC-500 adiabatic accelerating calorimeter, generally fixed at a height of 20 cm;

[0016] Moreover, by adjusting the contact depth between the end of the transverse frame edge and the socket part of the longitudinal frame edge, and locking the position between the transverse frame edge and the socket part by a sliding position locking mechanism, the bearing area enclosed by each tray is adapted to the battery under test;

[0017] A heat insulation cotton is placed on each of the trays, and the edge of the heat insulation cotton extends beyond the edge of the tray; the battery under test is seated on each tray through the heat insulation cotton to avoid direct contact between the battery under test and the tray and heat transfer, ensuring the normal progress of the battery thermal runaway test; among them, the heat insulation cotton is preferably cut into a size 0.5 cm longer than the edges of the tray in each direction.

[0018] Thus, after the thermocouple and power line are connected to the battery under test, the BTC-500 adiabatic accelerating calorimeter can be used to perform the battery thermal runaway test on the battery under test.

[0019] Therefore, the present utility model adopts a liftable support and a telescopic frame composed of two longitudinal frame edges, two transverse frame edges and an intermediate connecting beam, and uses five trays respectively arranged at the top surfaces of the two ends of the two longitudinal frame edges and the central top surface of the intermediate connecting beam to support the battery under test, realizing the lifting in the height direction and the scaling of the bearing area of the battery under test, making the present utility model suitable for the battery under test to perform the battery thermal runaway test through the BTC-500 adiabatic accelerating calorimeter, and moreover, being able to maximize the bearing area for different models and sizes of the battery under test to avoid problems such as tilting and dropping of the battery under test caused by thermal expansion during the test, ensuring the accuracy of the test results.

[0020] Moreover, the battery under test is seated on each tray through the heat insulation cotton, which can avoid direct contact between the battery under test and the tray and heat transfer, so that the battery under test remains stable and reduces the risk of dropping the battery under test; furthermore, the heat insulation cotton avoids multiple cuttings, can be reused, and saves resources.

[0021] Preferably: the condition that the bearing area enclosed by each tray is adapted to the battery under test further includes:

[0022] The bearing area is less than the maximum dimension of the cross-section of the battery under test;

[0023] Moreover, the retractable bracket for the adiabatic accelerating calorimeter does not directly contact the BTC-500 adiabatic accelerating calorimeter.

[0024] Compared with the prior art, the utility model has the following beneficial effects:

[0025] The utility model adopts a liftable bracket and a retractable frame composed of two longitudinal frame edges 1, two transverse frame edges 2 and an intermediate connecting beam 3, and uses five trays 4 respectively arranged at the top surfaces of the two ends of the two longitudinal frame edges 1 and the top surface of the center of the intermediate connecting beam 3 to support the battery under test 6, realizing the lifting in the height direction and the scaling of the bearing area of the battery under test 6, so that the utility model is suitable for the battery under test 6 to conduct battery thermal runaway tests through the BTC-500 adiabatic accelerating calorimeter, and can be suitable for batteries under test 6 of different model sizes to maximize their bearing areas, so as to avoid the problems of tilting and falling of the battery under test 6 caused by thermal expansion during the test, and ensure the accuracy of the test results.

[0026] Moreover, the battery under test 6 is located on each tray 4 through the heat insulation cotton 5, which can avoid the direct contact between the battery under test 6 and the tray 4 to generate heat transfer, so that the battery under test 6 is kept stable and the risk of the battery under test 6 falling is reduced; moreover, the heat insulation cotton 5 avoids multiple cuttings, can be reused, and saves resources. Description of the Drawings

[0027] The following further describes the utility model in detail with reference to the drawings and specific embodiments:

[0028] Figure 1 is a three-dimensional structural schematic diagram of the utility model;

[0029] Figure 2 is a side view of the utility model when it is expanded to the maximum bearing area;

[0030] Figure 3 is a side view of the utility model when it is contracted to the minimum bearing area;

[0031] Figure 4 is a structural schematic diagram of the utility model when bearing the battery under test. Detailed Embodiments

[0032] The present invention will be described in detail below in conjunction with the embodiments and their accompanying drawings to help those skilled in the art better understand the inventive concept of the present invention. However, the protection scope of the claims of the present invention is not limited to the following embodiments. For those skilled in the art, all other embodiments obtained without creative labor on the premise of not departing from the inventive concept of the present invention belong to the protection scope of the present invention.

[0033] As Figures 1 to 4 shown, the present invention discloses a telescopic bracket for an adiabatic accelerating calorimeter, including: a telescopic frame supported on a liftable bracket; the telescopic frame is composed of two longitudinal frame sides 1, two transverse frame sides 2 and an intermediate connecting beam 3. Socket parts 1-1 are provided at both ends of the two longitudinal frame sides 1. Both ends of one of the transverse frame sides 2 are respectively in sliding fit with the socket parts 1-1 on the same side of the two longitudinal frame sides 1 in the transverse direction. Both ends of the other transverse frame side 2 are respectively in sliding fit with the socket parts 1-1 on the other side of the two longitudinal frame sides 1 in the transverse direction. And a sliding position locking mechanism is provided between the end of the transverse frame side 2 and the corresponding socket part 1-1; the intermediate connecting beam 3 is fixedly connected between the two transverse frame sides 2; moreover, trays 4 for placing heat insulation cotton 5 are provided on the top surfaces at both ends of the two longitudinal frame sides 1 and the top surface of the center part of the intermediate connecting beam 3. Each tray 4 is in the same horizontal plane, and the sizes and shapes of each tray 4 are preferably kept consistent.

[0034] The present invention also discloses a battery thermal runaway test structure, including: a BTC-500 adiabatic accelerating calorimeter, a battery under test 6 and a support frame for supporting the battery under test 6;

[0035] The support frame is the telescopic bracket for the adiabatic accelerating calorimeter;

[0036] The telescopic bracket for the adiabatic accelerating calorimeter is placed at the central test position inside the BTC-500 adiabatic accelerating calorimeter. The height of the telescopic frame is adjusted through the liftable bracket so that the top surfaces of each tray 4 are at the test height of the BTC-500 adiabatic accelerating calorimeter, generally a fixed height of 20 cm;

[0037] Moreover, by adjusting the contact depth between the end of the transverse frame side 2 and the socket part 1-1 of the longitudinal frame side 1 and locking the position between the transverse frame side 2 and the socket part 1-1 by the sliding position locking mechanism, the bearing area surrounded by each tray 4 is adapted to the battery under test 6;

[0038] A heat insulation cotton 5 is placed on each of the trays 4, and the edge of the heat insulation cotton 5 extends beyond the edge of the tray 4; the battery under test 6 is located on each tray 4 through the heat insulation cotton 5 to prevent the battery under test 6 from directly contacting the tray 4 and causing heat transfer, ensuring the normal progress of the battery thermal runaway test; among them, the heat insulation cotton 5 is preferably cut into a size that is 0.5 cm longer than the edges of the tray 4 in each direction.

[0039] Thus, after the battery under test 6 is connected to the thermocouple and the power cord, the BTC-500 adiabatic accelerating calorimeter can be used to perform the battery thermal runaway test on the battery under test 6.

[0040] Therefore, the present utility model adopts a liftable bracket and a telescopic frame composed of two longitudinal frame edges 1, two transverse frame edges 2 and an intermediate connecting beam 3, and uses five trays 4 respectively arranged on the top surfaces of the two ends of the two longitudinal frame edges 1 and the center top surface of the intermediate connecting beam 3 to support the battery under test 6, realizing the lifting in the height direction and the scaling of the bearing area of the battery under test 6, making the present utility model suitable for the battery under test 6 to perform the battery thermal runaway test through the BTC-500 adiabatic accelerating calorimeter, and being able to adapt to different models and sizes of the battery under test 6 to maximize its bearing area, so as to avoid the problems of tilting and dropping of the battery under test 6 caused by thermal expansion during the test, ensuring the accuracy of the test results.

[0041] Moreover, the battery under test 6 is located on each tray 4 through the heat insulation cotton 5, which can prevent the battery under test 6 from directly contacting the tray 4 and causing heat transfer, so that the battery under test 6 remains stable and reduces the risk of the battery under test 6 dropping; furthermore, the heat insulation cotton 5 avoids multiple cuttings, can be reused, and saves resources.

[0042] The above is the basic implementation manner of the present utility model, and further optimization, improvement and limitation can be made on the basis of this basic implementation manner:

[0043] Preferably: the sliding position locking mechanism is: a plurality of locking holes 2a are arranged at intervals along the transverse direction at the end of the transverse frame edge 2, a locking block adapted to the locking holes 2a is arranged on the inner wall of the socket part 1-1, and the position locking between the transverse frame edge 2 and the socket part 1-1 is realized by the locking block being inserted into the locking holes 2a. Thus, by adjusting the locking block to be inserted into different locking holes 2a, the telescopic adjustment of the telescopic frame can be realized to change the bearing area surrounded by each tray 4, thereby adapting to different models and sizes of the battery under test 6.

[0044] Preferably: rollers are arranged between the transverse frame edge 2 and the socket part 1-1 to reduce the friction between the two and make the telescoping smoother.

[0045] Preferably, the middle connecting beam 3 is in an H shape, and grooves are provided on the bottom surfaces of the longitudinal frame edges 1 and the middle connecting beam 3, so as to reduce the weight of the retractable frame while ensuring that the retractable frame has sufficient strength to support the battery 6 to be measured, and facilitate movement.

[0046] Preferably, the liftable support is: four retractable legs 7 with telescopic height locking functions respectively installed on the bottom surfaces at both ends of the two longitudinal frame edges 1.

[0047] Preferably, a lockable caster 8 is installed at the bottom of the retractable leg 7, so that after the retractable support for the adiabatic accelerating calorimeter can be conveniently pushed into the central test position in the BTC-500 adiabatic accelerating calorimeter through the lockable caster 8, by locking the lockable caster 8, the retractable support for the adiabatic accelerating calorimeter will not move, avoiding scratching the bottom of the BTC-500 adiabatic accelerating calorimeter.

[0048] Preferably, both the liftable support and the retractable frame are made of stainless steel materials to ensure compressive resistance and heat resistance.

[0049] Preferably, the bearing area surrounded by each tray 4 is adapted to the conditions of the battery 6 to be measured, and at the same time includes:

[0050] The bearing area is less than the maximum dimension of the cross-section of the battery 6 to be measured;

[0051] And, the retractable support for the adiabatic accelerating calorimeter does not directly contact the BTC-500 adiabatic accelerating calorimeter.

[0052] The present utility model is not limited to the above specific embodiments. According to the above content, according to the common general technical knowledge and conventional means in the art, without departing from the above basic technical idea of the present utility model, the present utility model can also make various other forms of equivalent modifications, substitutions or changes, all of which fall within the protection scope of the present utility model.

Claims

1. A telescopic bracket for an adiabatic accelerating calorimeter, characterized in that, Comprising: A telescopic frame supported on a liftable bracket; the telescopic frame is composed of two longitudinal frame edges (1), two transverse frame edges (2) and an intermediate connecting beam (3). Socket parts (1-1) are provided at both ends of the two longitudinal frame edges (1). The two ends of one of the transverse frame edges (2) are respectively in sliding fit with the socket parts (1-1) on the same side of the two longitudinal frame edges (1) in the transverse direction, and the two ends of the other transverse frame edge (2) are respectively in sliding fit with the socket parts (1-1) on the other side of the two longitudinal frame edges (1) in the transverse direction. And a sliding position locking mechanism is provided between the end of the transverse frame edge (2) and the corresponding socket part (1-1); the intermediate connecting beam (3) is fixedly connected between the two transverse frame edges (2); moreover, trays (4) for placing heat insulation cotton (5) are provided on the top surfaces of both ends of the two longitudinal frame edges (1) and the central part of the top surface of the intermediate connecting beam (3), and each tray (4) is in the same horizontal plane.

2. The retractable bracket for an adiabatic accelerating calorimeter according to claim 1, characterized in that: The sliding position locking mechanism is: A plurality of locking holes (2a) are arranged at intervals in the transverse direction at the end of the transverse frame edge (2), a locking block adapted to the locking holes (2a) is arranged on the inner wall of the socket part (1-1), and the position locking between the transverse frame edge (2) and the socket part (1-1) is realized by the locking block being inserted into the locking holes (2a).

3. The retractable bracket for an adiabatic accelerating calorimeter according to claim 2, wherein: Rollers are provided between the transverse frame edge (2) and the socket part (1-1).

4. The retractable bracket for an adiabatic accelerating calorimeter according to claim 1, wherein: The intermediate connecting beam (3) is in an H shape, and grooves are provided on the bottom surfaces of the longitudinal frame edge (1) and the intermediate connecting beam (3).

5. The retractable bracket for an adiabatic accelerating calorimeter according to any one of claims 1 to 4, characterized in that: The liftable bracket is: Four telescopic feet (7) with a telescopic height locking function respectively installed on the bottom surfaces of both ends of the two longitudinal frame edges (1).

6. The retractable bracket for an adiabatic accelerated calorimeter according to claim 5, characterized in that: Lockable casters (8) are installed at the bottom of the telescopic feet (7).

7. The telescopic bracket for adiabatic acceleration calorimeter according to any one of claims 1 to 4, characterized in that: Both the liftable bracket and the telescopic frame are made of stainless steel material.

8. A battery thermal runaway test structure, comprising: BTC-500 adiabatic accelerating calorimeter, the battery under test (6) and a support frame for supporting the battery under test (6); Characterized in that: The support frame is the telescopic bracket for the adiabatic accelerating calorimeter according to any one of claims 1 to 7; The telescopic bracket for the adiabatic accelerating calorimeter is placed at the central test position inside the BTC-500 adiabatic accelerating calorimeter, and the height of the telescopic frame is adjusted by the liftable bracket so that the top surfaces of each tray (4) are at the test height of the BTC-500 adiabatic accelerating calorimeter; Moreover, by adjusting the contact depth between the end of the transverse frame edge (2) and the socket part (1-1) of the longitudinal frame edge (1), and locking the position between the transverse frame edge (2) and the socket part (1-1) by the sliding position locking mechanism, the bearing area surrounded by each tray (4) is adapted to the battery under test (6); One piece of heat insulation cotton (5) is placed on each of the trays (4), and the edge of the heat insulation cotton (5) extends beyond the edge of the tray (4); the battery under test (6) is seated on each tray (4) through the heat insulation cotton (5).

9. The battery thermal runaway test structure according to claim 8, wherein: The condition that the bearing area surrounded by each tray (4) is adapted to the battery under test (6) simultaneously includes: The bearing area reaches a maximum size smaller than the cross-sectional connection of the battery under test (6); Moreover, the retractable bracket for the adiabatic accelerating calorimeter does not directly contact the BTC-500 adiabatic accelerating calorimeter.

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