A battery fire extinguishing test device

Abstract

The application discloses a battery fire extinguishing test device, which has a first direction and comprises a first support, a second support and a fire extinguishing member. The first support is provided with a first bearing part, and the first bearing part has a bearing surface for placing a battery pack. The second support is provided with a second bearing part, and the second bearing part is located on one side of the first bearing part along the first direction. The fire extinguishing member is connected to the second bearing part. The fire extinguishing member has a spraying port, and the spraying port is arranged towards the bearing surface. The fire extinguishing member is used for spraying fire extinguishing material to the bearing surface via the spraying port. At least one of the first bearing part and the second bearing part can move along the first direction to adjust the distance between the spraying port and the bearing surface. By moving at least one of the first bearing part and the second bearing part along the first direction, the distance between the battery pack on the bearing surface and the spraying port of the fire extinguishing member is adjusted, the fire extinguishing distance is adjusted, the test parameter is adjusted, and the adjustment difficulty of some test parameters is reduced.

Description

Technical Field

[0001] This application belongs to the field of battery technology, specifically relating to a battery fire extinguishing test device. Background Technology

[0002] Lithium-ion batteries are widely used in various industries due to their advantages such as good cycle performance, no memory effect, and high specific energy.

[0003] In related technologies, battery fire extinguishing test devices are used to extinguish lithium batteries that have experienced thermal runaway in order to test the effectiveness of extinguishing agents, extinguishing methods, etc. However, existing battery fire extinguishing test devices have relatively fixed structures, making it inconvenient to adjust and test parameters. Utility Model Content

[0004] This application aims to provide a battery fire extinguishing test device that can solve the problem that the existing battery fire extinguishing test devices have a relatively fixed structure and are inconvenient for parameter adjustment and testing.

[0005] To solve the above-mentioned technical problems, this application is implemented as follows: This application provides a battery fire extinguishing test device with a first direction, including a first support member, a second support member, and a fire extinguishing member. The first support member has a first bearing portion with a bearing surface for placing a battery pack. The second support member has a second bearing portion located on one side of the first bearing portion along the first direction. The fire extinguishing member is connected to the second bearing portion and has a spray nozzle facing the bearing surface. The fire extinguishing member is used to spray fire extinguishing material onto the bearing surface through the spray nozzle. At least one of the first bearing portion and the second bearing portion can move along the first direction to adjust the distance between the spray nozzle and the bearing surface.

[0006] Optionally, the second support member further includes a frame, the frame having a test chamber, the first support member being disposed in the test chamber, the second bearing portion being disposed in the test chamber and connected to the frame, the frame having a plurality of first mounting holes, the plurality of first mounting holes being arranged at intervals along the first direction, the second bearing portion having a second mounting hole, the second mounting hole being selectively connected to one of the first mounting holes to adjust the distance between the injection port and the bearing surface.

[0007] Optionally, the frame includes a plurality of support rods and connecting rods. The plurality of support rods extend along the first direction and are circumferentially spaced around the first support member. The connecting rods are connected to the end of the support rods away from the first support member along the first direction. The plurality of support rods and connecting rods enclose the test cavity. Each support rod is provided with a plurality of first mounting holes arranged at intervals along the first direction.

[0008] Optionally, the battery fire extinguishing test device has a second direction and a third direction that are perpendicular to each other, the second direction and the third direction being perpendicular to the first direction; the second supporting part includes a first support rod and a second support rod, the first support rod extending along the second direction, and the first support rod having second mounting holes at both ends along the second direction; the second support rod extending along the third direction, the second support rod being connected to the first support rod, and the fire extinguishing element being connected to the second support rod.

[0009] Optionally, the first support rod is provided with a plurality of third mounting holes, which are arranged at intervals along the second direction. The second support rod is provided with a plurality of fourth mounting holes, which can be selectively connected to one of the third mounting holes to adjust the distance between two adjacent second support rods.

[0010] Optionally, the first support member includes a first bearing portion, a base, and a lifting structure, wherein the first bearing portion and the base are spaced apart along the first direction; the lifting structure is connected between the first bearing portion and the base to drive the first bearing portion to move up and down relative to the base, thereby adjusting the distance between the injection port and the bearing surface.

[0011] Optionally, the fire extinguishing device includes an adjustable nozzle, the adjustable nozzle having the spray port, and the adjustable nozzle being at least partially movable to change the spray direction of the spray port.

[0012] Optionally, the system further includes a supply system, wherein multiple fire extinguishing devices are provided, and each of the multiple fire extinguishing devices is connected to the supply system, which is used to supply fire extinguishing materials to the multiple fire extinguishing devices.

[0013] Optionally, the supply system includes a storage unit, a booster pump, and a delivery pipeline. The storage unit is used to store fire extinguishing materials, the delivery pipeline is connected to the storage unit, multiple fire extinguishing devices are connected to the delivery pipeline, and the booster pump is located in the delivery pipeline.

[0014] Optionally, it further includes a control valve, a detection mechanism, and a control unit, wherein the control valve and the detection mechanism are both electrically connected to the control unit; the control valve is located on the delivery pipeline and is used to open or close the delivery pipeline; the detection mechanism is installed on the first support and / or the second support and is used to detect the temperature of the battery pack; the control unit is used to control the operation of the control valve based on the detection result of the detection mechanism.

[0015] In the embodiments of this application, the bearing surface of the first bearing portion of the first support member can be used to place the battery pack for the fire extinguishing test. The second bearing portion of the second support member is located on one side of the first bearing portion along the first direction. The fire extinguishing element is connected to the second bearing portion, and the nozzle of the fire extinguishing element can spray fire extinguishing material toward the bearing surface. By allowing at least one of the first and second bearing portions to move along the first direction, the distance between the first and second bearing portions can be changed, thereby changing the distance between the bearing surface of the first bearing portion and the fire extinguishing element on the second bearing portion. This allows adjustment of the distance between the battery pack on the bearing surface and the nozzle of the fire extinguishing element, thus adjusting the fire extinguishing distance and, consequently, adjusting the test parameters, reducing the difficulty of adjusting some test parameters.

[0016] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments will be briefly introduced below, wherein: Figure 1 This is a three-dimensional structural diagram of the battery fire extinguishing test device according to an embodiment of this application; Figure 2 This is a three-dimensional structural diagram of the first support member, the battery pack, and the second support member according to an embodiment of this application; Figure 3 This is a schematic diagram of the exploded structure of the battery pack according to an embodiment of this application.

[0018] Figure label: 10. First support member; 11. First load-bearing part; 111. Load-bearing surface; 12. Base; 13. Lifting structure; 20. Battery pack; 21. Battery; 211. Thermal runaway battery; 212. Protective battery; 22. Clamping plate; 23. Heating element; 24. Heat insulation element; 25. Bolt; 26. Nut; 30. Second support member; 31. Frame; 311. Test chamber; 32. Second load-bearing part; 33. Support rod; 34. Connecting rod; 35. First support rod; 36. Second support rod; 40. Fire extinguishing element; 60. Supply system; 61. Storage element; 62. Booster pump; 63. Delivery pipeline; 70. Control unit; X, First direction; Y, Second direction; Z, Third direction. Detailed Implementation

[0019] The embodiments of this application will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0020] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0021] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0022] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0023] The battery fire extinguishing test device provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0024] like Figure 1 and Figure 2As shown in the embodiment of this application, a battery fire extinguishing test device is proposed, having a first direction X, including a first support member 10, a second support member 30, and a fire extinguishing member 40. The first support member 10 is provided with a first bearing portion 11, which has a bearing surface 111 for placing a battery pack 20. The second support member 30 is provided with a second bearing portion 32, which is located on one side of the first bearing portion 11 along the first direction X. The fire extinguishing member 40 is connected to the second bearing portion 32 and has a spray nozzle facing the bearing surface 111. The fire extinguishing member 40 is used to spray fire extinguishing material onto the bearing surface 111 through the spray nozzle. At least one of the first bearing portion 11 and the second bearing portion 32 can move along the first direction X to adjust the distance between the spray nozzle and the bearing surface 111.

[0025] In this embodiment, the bearing surface 111 of the first bearing portion 11 of the first support member 10 can be used to place the battery pack 20 for the fire extinguishing test. The second bearing portion 32 of the second support member 30 is located on one side of the first bearing portion 11 along the first direction X. The fire extinguishing element 40 is connected to the second bearing portion 32, and the nozzle of the fire extinguishing element 40 can spray fire extinguishing material toward the bearing surface 111. By allowing at least one of the first bearing portion 11 and the second bearing portion 32 to move along the first direction X, the distance between the first bearing portion 11 and the second bearing portion 32 can be changed, thereby changing the distance between the bearing surface 111 of the first bearing portion 11 and the fire extinguishing element 40 on the second bearing portion 32. This allows adjustment of the distance between the battery pack 20 on the bearing surface 111 and the nozzle of the fire extinguishing element 40, thus achieving adjustment of the fire extinguishing distance, i.e., adjustment of test parameters, and reducing the difficulty of adjusting some test parameters.

[0026] like Figure 1 and Figure 2 As shown, the first direction X can be the height direction of the battery fire extinguishing test device, and the first bearing part 11 of the first support member 10 has a bearing surface 111, which can be a plane to facilitate supporting the battery pack 20.

[0027] like Figure 1 and Figure 2 As shown, the second support portion 32 of the second support member 30 can be used to install the fire extinguishing component 40, so that the fire extinguishing component 40 is located on one side of the first support portion 11 along the first direction X. The nozzle of the fire extinguishing component 40 can spray fire extinguishing material toward the support surface 111, thereby spraying the fire extinguishing material onto the battery pack 20, and fire extinguishing tests can be conducted.

[0028] For example, the extinguishing material can be water, dry powder extinguishing agent, or liquid extinguishing agent. The specific type of extinguishing material can be flexibly set according to the actual situation, and this application embodiment does not limit it in this regard.

[0029] At least one of the first support portion 11 and the second support portion 32 can move along the first direction X, which can be achieved in the following three ways: the first support portion 11 moves alone along the first direction X; the second support portion 32 moves alone along the first direction X; and both the first support portion 11 and the second support portion 32 can move along the first direction X.

[0030] With the above structure, the distance between the first support part 11 and the second support part 32 can be adjusted, and the distance between the spray nozzle and the support surface 111 can be adjusted, thereby adjusting the distance between the spray nozzle and the battery pack 20, and fire extinguishing tests at different fire extinguishing distances can be carried out.

[0031] Optionally, such as Figure 2 As shown, the second support member 30 also includes a frame 31, in which a test chamber 311 is provided. The first support member 10 is provided in the test chamber 311, and the second bearing part 32 is provided in the test chamber 311 and connected to the frame 31. The frame 31 is provided with a plurality of first mounting holes, which are arranged at intervals along the first direction X. The second bearing part 32 is provided with second mounting holes, which can be selectively connected to one of the first mounting holes to adjust the distance between the injection port and the bearing surface 111.

[0032] In this embodiment, by forming a test chamber 311 in the frame 31 of the second support member 30, and by placing both the first support member 10 and the second bearing member 32 within the test chamber 311, a fire extinguishing test can be conducted within the test chamber 311, providing good protection. Simultaneously, by providing multiple first mounting holes on the frame 31, the second mounting hole of the second bearing member 32 can be selectively connected to one of the first mounting holes. By connecting different first mounting holes through the second mounting hole, the position of the second bearing member 32 relative to the frame 31 can be adjusted, thereby adjusting the distance between the spray nozzle and the bearing surface (111).

[0033] For example, the frame 31 is provided with a first mounting hole, and the second support part 32 is provided with a second mounting hole. The two can be connected by bolts and nuts. The bolts pass through the first and second mounting holes and are then fitted with nuts for installation. This bolt-mounting method allows for both movement of the second support part 32 and fixation after movement.

[0034] Optionally, such as Figure 2 As shown, the frame 31 includes multiple support rods 33 and connecting rods 34. The multiple support rods 33 extend along the first direction X and are circumferentially spaced around the first support member 10. The connecting rods 34 are connected to the end of the support rod 33 away from the first support member 10 along the first direction X. The multiple support rods 33 and connecting rods 34 enclose to form a test cavity 311. Each support rod 33 is provided with multiple first mounting holes arranged at intervals along the first direction X.

[0035] In this embodiment, a frame 31 is formed by connecting multiple support rods 33 and connecting rods 34. The multiple support rods 33 and connecting rods 34 enclose a test cavity 311, making the structure of the frame 31 simple and the manufacturing process relatively easy. By extending the support rods 33 along the first direction X, multiple first mounting holes spaced apart along the first direction X can be provided on the support rods 33, thereby providing conditions for the movement and disassembly of the second support part 32.

[0036] For example, such as Figure 2 As shown, there can be four support rods 33, which are connected to the connecting rods 34 to form a quadrangular prism-shaped frame 31. It should be noted that, in order to improve the structural strength of the frame 31, diagonal braces can be connected at appropriate positions on the frame 31. The diagonal braces connect the support rods 33 and the connecting rods 34, forming support for the support rods 33 and the connecting rods 34, thereby improving the structural strength of the entire frame 31.

[0037] For example, both the support rod 33 and the connecting rod 34 can be profiles, such as square tubes, round tubes, channel steel and angle steel, etc., which can be directly manufactured by profiles, reducing the processing difficulty of the support rod 33 and the connecting rod 34.

[0038] Optionally, such as Figure 2 As shown, the battery fire extinguishing test device has a second direction Y and a third direction Z that are perpendicular to each other, and the second direction Y and the third direction Z are perpendicular to the first direction X; the second support part 32 includes a first support rod 35 and a second support rod 36, the first support rod 35 extends along the second direction Y, and the first support rod 35 has second mounting holes at both ends along the second direction Y; the second support rod 36 extends along the third direction Z, the second support rod 36 is connected to the first support rod 35, and the fire extinguishing component 40 is connected to the second support rod 36.

[0039] In this embodiment, by providing second mounting holes at both ends of the first support rod 35 of the second bearing portion 32 along the second direction Y, the first support rod 35 can be connected to the first mounting hole. By connecting the second support rod 36 to the first support rod 35 and the fire extinguishing element 40 to the second support rod 36, the fire extinguishing element 40 can be installed, and the positions of the second support rod 36 and the fire extinguishing element 40 can be changed with the first support rod 35.

[0040] For example, such as Figure 2 As shown, there can be two first support rods 35, which are arranged at intervals along the third direction Z. The two ends of the second support rod 36 along the third direction Z are respectively connected to the two first support rods 35.

[0041] It should be noted that the first direction X, the second direction Y, and the third direction Z are mutually perpendicular. Specifically, this can be "perpendicular" in the strict sense, for example, the angle between the first direction X and the second direction Y is 90°; or it can be "approximately perpendicular," specifically meaning that the angle between any two of the first direction X, the second direction Y, and the third direction Z includes a certain error. Considering the measurement and the error associated with the measurement of a specific quantity (i.e., the limitations of the measurement system), this error is within the acceptable deviation range for a specific value as determined by a person skilled in the art. For example, the angle between the first direction X and the second direction Y is 90° ± 5°.

[0042] Optionally, such as Figure 2 As shown, the first support rod 35 is provided with a plurality of third mounting holes, which are arranged at intervals along the second direction Y. The second support rod 36 is provided with a plurality of fourth mounting holes, which can be selectively connected to one of the third mounting holes to adjust the distance between two adjacent second support rods 36.

[0043] In this embodiment, the second support rod 36 can be selectively connected to a third mounting hole via the fourth mounting hole. By mounting the second support rod 36 to different third mounting holes, the distance between two adjacent second support rods 36 can be adjusted, thus supporting battery packs 20 of various sizes.

[0044] For example, there may be two second support rods 36, which are arranged at intervals along the second direction Y.

[0045] Optionally, such as Figure 2 As shown, the first support member 10 includes a first bearing part 11, a base 12 and a lifting structure 13. The first bearing part 11 and the base 12 are spaced apart along the first direction X. The lifting structure 13 is connected between the first bearing part 11 and the base 12 to drive the first bearing part 11 to move up and down relative to the base 12, so as to adjust the distance between the spray nozzle and the bearing surface 111.

[0046] In this embodiment of the application, by connecting the lifting structure 13 to the first bearing part 11 and the base 12, the first bearing part 11 can be driven to move up and down relative to the base 12, thereby realizing the movement of the first bearing part 11 along the first direction X, which can change the distance between the first bearing part 11 and the fire extinguishing element 40, thereby adjusting the distance between the spray nozzle of the fire extinguishing element 40 and the bearing surface 111 of the first bearing part 11.

[0047] For example, the lifting structure 13 can be a component with driving capability such as a motor or cylinder, which does not require manual driving and saves manpower.

[0048] Optionally, the extinguishing device 40 includes an adjustable nozzle with a spray port, the adjustable nozzle being at least partially movable to change the spray direction of the spray port.

[0049] In this embodiment of the application, the fire extinguishing device 40 includes an adjustable nozzle with a spray port. The adjustable nozzle is at least partially movable, thereby changing the spray direction of the spray port so as to spray fire extinguishing material onto the battery pack 20 from different directions, and fire extinguishing tests can be conducted with different spray directions.

[0050] In some embodiments, there can be multiple adjustable nozzles, which can spray in different directions, allowing for simultaneous fire extinguishing tests with multiple spray directions.

[0051] Optionally, such as Figure 1 As shown, the battery fire extinguishing test device also includes a supply system 60, and multiple fire extinguishing components 40 are provided. All multiple fire extinguishing components 40 are connected to the supply system 60, and the supply system 60 is used to supply fire extinguishing materials to the multiple fire extinguishing components 40.

[0052] In this embodiment, multiple fire extinguishing components 40 are provided, and all of the multiple fire extinguishing components 40 are connected to the supply system 60, so that the supply system 60 can supply fire extinguishing materials to the multiple fire extinguishing components 40, thereby extinguishing the battery pack 20 through the multiple fire extinguishing components 40 and improving the fire extinguishing effect.

[0053] Specifically, multiple fire extinguishing components 40 can be installed at different positions on the second support part 32 to spray fire extinguishing material onto the battery pack 20 from different positions.

[0054] Optionally, such as Figure 1 As shown, the supply system 60 includes a storage unit 61, a booster pump 62, and a delivery pipeline 63. The storage unit 61 is used to store fire extinguishing materials, the delivery pipeline 63 is connected to the storage unit 61, and multiple fire extinguishing components 40 are connected to the delivery pipeline 63. The booster pump 62 is located in the delivery pipeline 63.

[0055] In this embodiment, the fire extinguishing material can be stored through the storage component 61, and the fire extinguishing component 40 can be pressurized through the booster pump 62, so that the fire extinguishing material can be transported along the delivery pipeline 63.

[0056] Optionally, such as Figure 1 As shown, the battery fire extinguishing test device also includes a control valve, a detection mechanism, and a control unit 70. The control valve and the detection mechanism are both electrically connected to the control unit 70. The control valve is located on the delivery pipeline 63 and is used to open or close the delivery pipeline 63. The detection mechanism is installed on the first support member 10 and / or the second support member 30 and is used to detect the temperature of the battery pack 20. The control unit 70 is used to control the operation of the control valve based on the detection results of the detection mechanism.

[0057] In this embodiment, by controlling the opening or closing of the delivery pipeline 63 through the control valve, and by detecting the temperature of the battery pack 20 through the detection mechanism, the control unit 70 can control the operation of the control valve according to the detection result of the detection mechanism, thereby realizing automatic control of the control valve and automatic control of the opening or closing of the delivery pipeline 63.

[0058] In some embodiments, such as Figure 3 As shown, the battery pack 20 includes multiple batteries 21, clamping plates 22 and heating elements 23. The multiple batteries 21 are stacked, and two clamping plates 22 are respectively disposed on both sides of the stacking direction of the multiple batteries 21. The two clamping plates 22 are connected to clamp the multiple batteries 21. The heating element 23 is connected between the multiple batteries 21 and one of the clamping plates 22.

[0059] In this embodiment, multiple batteries 21 are arranged in the battery pack 20 and clamped together by clamping plates 22. If some batteries 21 experience thermal runaway, it is possible to monitor whether the runaway is spreading to adjacent batteries 21 and conduct fire extinguishing tests using different testing strategies.

[0060] For example, such as Figure 3 As shown, the battery pack 20 includes three batteries 21, of which there are two thermal runaway batteries 211 and one protection battery 212. By monitoring the protection battery 212, it is possible to monitor whether the thermal runaway battery 211 has spread into the protection battery 212.

[0061] Specifically, such as Figure 3 As shown, the two clamping plates 22 can be connected by bolts 25 and nuts 26.

[0062] In some embodiments, such as Figure 3 As shown, the battery pack 20 also includes a heat insulation component 24, which is connected between the heating component 23 and the clamping plate 22.

[0063] In this embodiment of the application, by providing a heat insulation member 24 between the heating element 23 and the clamping plate 22, the heat of the heating element 23 is transferred to one side of the battery pack 20, reducing the heat transfer to one side of the clamping plate 22.

[0064] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0065] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery fire extinguishing test device, having a first direction (X), characterized in that, include: The first support member (10) is provided with a first bearing portion (11), and the first bearing portion (11) has a bearing surface (111) for placing the battery pack (20). The second support member (30) is provided with a second bearing portion (32), which is located on one side of the first bearing portion (11) along the first direction (X); Fire extinguishing device (40), the fire extinguishing device (40) is connected to the second support part (32), the fire extinguishing device (40) has a spray nozzle, the spray nozzle is disposed facing the support surface (111), the fire extinguishing device (40) is used to spray fire extinguishing material onto the support surface (111) through the spray nozzle; At least one of the first support portion (11) and the second support portion (32) can move along the first direction (X) to adjust the distance between the injection port and the support surface (111).

2. The battery fire extinguishing test apparatus according to claim 1, characterized in that, The second support member (30) further includes a frame (31), in which a test chamber (311) is provided. The first support member (10) is located in the test chamber (311). The second bearing part (32) is located in the test chamber (311) and connected to the frame (31). The frame (31) is provided with a plurality of first mounting holes, which are arranged at intervals along the first direction (X). The second bearing part (32) is provided with a second mounting hole, which can be selectively connected to one of the first mounting holes to adjust the distance between the injection port and the bearing surface (111).

3. The battery fire extinguishing test apparatus according to claim 2, characterized in that, The frame (31) includes a plurality of support rods (33) and connecting rods (34). The plurality of support rods (33) extend along the first direction (X) and are circumferentially spaced around the first support member (10). The connecting rods (34) are connected to the end of the support rod (33) away from the first support member (10) along the first direction (X). The plurality of support rods (33) and the connecting rods (34) enclose the test cavity (311). Each support rod (33) is provided with a plurality of first mounting holes arranged at intervals along the first direction (X).

4. The battery fire extinguishing test apparatus according to claim 3, characterized in that, The battery fire extinguishing test device has a second direction (Y) and a third direction (Z) that are perpendicular to each other, and the second direction (Y) and the third direction (Z) are perpendicular to the first direction (X). The second support part (32) includes a first support rod (35) and a second support rod (36). The first support rod (35) extends along the second direction (Y), and the first support rod (35) has second mounting holes at both ends along the second direction (Y). The second support rod (36) extends along the third direction (Z), and the second support rod (36) is connected to the first support rod (35). The fire extinguishing device (40) is connected to the second support rod (36).

5. The battery fire extinguishing test apparatus according to claim 4, characterized in that, The first support rod (35) is provided with a plurality of third mounting holes, which are arranged at intervals along the second direction (Y). The second support rod (36) is provided with a plurality of fourth mounting holes, which can be selectively connected to one of the third mounting holes to adjust the distance between two adjacent second support rods (36).

6. The battery fire extinguishing test apparatus according to any one of claims 1 to 5, characterized in that, The first support member (10) includes a first bearing part (11), a base (12) and a lifting structure (13), wherein the first bearing part (11) and the base (12) are spaced apart along the first direction (X); The lifting structure (13) is connected between the first bearing part (11) and the base (12) to drive the first bearing part (11) to move up and down relative to the base (12) in order to adjust the distance between the injection port and the bearing surface (111).

7. The battery fire extinguishing test apparatus according to any one of claims 1 to 5, characterized in that, The fire extinguishing device (40) includes an adjustable nozzle having the spray port, and the adjustable nozzle is at least partially movable to change the spray direction of the spray port.

8. The battery fire extinguishing test apparatus according to any one of claims 1 to 5, characterized in that, It also includes a supply system (60), wherein there are multiple fire extinguishing components (40), and all of the multiple fire extinguishing components (40) are connected to the supply system (60). The supply system (60) is used to supply fire extinguishing materials to the multiple fire extinguishing components (40).

9. The battery fire extinguishing test apparatus according to claim 8, characterized in that, The supply system (60) includes a storage unit (61), a booster pump (62), and a delivery pipeline (63). The storage unit (61) is used to store fire extinguishing materials. The delivery pipeline (63) is connected to the storage unit (61). A plurality of fire extinguishing devices (40) are connected to the delivery pipeline (63). The booster pump (62) is located on the delivery pipeline (63).

10. The battery fire extinguishing test apparatus according to claim 9, characterized in that, It also includes a control valve, a detection mechanism, and a control unit (70), wherein the control valve and the detection mechanism are both electrically connected to the control unit (70); The control valve is located in the delivery pipeline (63), and the control valve is used to open or close the delivery pipeline (63). The detection mechanism is installed on the first support member (10) and / or the second support member (30), and the detection mechanism is used to detect the temperature of the battery pack (20); The control unit (70) is used to control the operation of the control valve based on the detection results of the detection mechanism.

Images