Explosion-proof box for battery pack

Abstract

The explosion-proof box for the battery pack comprises a box body for storing the battery pack. The box body comprises a box main body, a first door body and a second door body. An accommodating cavity for accommodating a battery pack is formed in the box main body, a first in-out opening and a second in-out opening which are communicated with the accommodating cavity and are used for allowing the battery pack to enter and exit are formed, and the opening directions of the first in-out opening and the second in-out opening are different. The first door body is arranged at the first entrance and exit and used for opening and closing the first entrance and exit. And the second door body is arranged at the second entrance and exit and used for opening and closing the second entrance and exit, and the opening and closing movement of the first door body and the opening and closing movement of the second door body are independent of each other. The battery pack explosion-proof box disclosed by the utility model can receive abnormal battery packs carried from different directions, can be suitable for different carrying scenes, and is wide in application range.

Description

Technical Field

[0001] The present disclosure relates to the field of explosion-proof boxes, and particularly to an explosion-proof box for a battery pack. Background Art

[0002] In the related art, when an abnormal phenomenon occurs in a battery pack, such as overheating or catching fire, the battery pack needs to be placed in an explosion-proof box and transferred away. However, when the battery pack is transferred away, different transfer tools are used according to different on-site situations. For example, a crane on site is used to lift the abnormal battery pack into the explosion-proof box, or the fork of a forklift on site is used to lift the abnormal battery pack into the explosion-proof box. However, the explosion-proof boxes in the related art often have only one inlet and outlet for the battery pack to enter and exit, and can only receive battery packs from a single direction, with a single function and a small scope of application. Summary of the Invention

[0003] An advantage of the present disclosure is to provide an explosion-proof box for a battery pack, which can receive abnormal battery packs carried from different directions, can be applicable to different handling scenarios, and has a wide range of applications.

[0004] To achieve at least one of the above advantages of the present disclosure, the present disclosure provides an explosion-proof box for a battery pack, including a box body for storing the battery pack. The box body includes: a box main body, which forms a receiving cavity for accommodating the battery pack, and forms a first inlet and outlet and a second inlet and outlet that are communicated with the receiving cavity and for the battery pack to enter and exit. The openings of the first inlet and outlet and the second inlet and outlet face different directions; a first door body, which is arranged at the first inlet and outlet for opening and closing the first inlet and outlet; and a second door body, which is arranged at the second inlet and outlet for opening and closing the second inlet and outlet, and the opening and closing movements of the first door body and the second door body are independent of each other.

[0005] According to an embodiment of the present disclosure, the first inlet and outlet is arranged upward and open at the top of the box main body, and the second inlet and outlet is arranged outward and open at the side of the box main body.

[0006] According to an embodiment of the present disclosure, the first door body is rotatably arranged on the box main body toward and away from the first inlet and outlet to rotate and open and close the first inlet and outlet.

[0007] According to an embodiment of the present disclosure, it further includes a main handle arranged on the first door body; and an auxiliary handle arranged on the first door body, and the lowest height of the auxiliary handle is greater than the lowest height of the main handle.

[0008] According to an embodiment of the present disclosure, the second door body is rotatably arranged on the box main body toward and away from the second inlet and outlet to rotate and open and close the second inlet and outlet.

[0009] According to an embodiment of the present disclosure, the second door body includes a first side door and a second side door, which are rotatably arranged on opposite sides of the second inlet and outlet, and cooperate to close the second inlet and outlet.

[0010] According to an embodiment of the present disclosure, it further includes an exhaust valve arranged in the box body; and / or a pressure relief valve arranged in the box body.

[0011] According to an embodiment of the present disclosure, it further includes a pressure detection member arranged in the box body for detecting the pressure in the accommodation cavity.

[0012] According to an embodiment of the present disclosure, the box body forms a fire extinguishing agent inlet and a fire extinguishing agent outlet communicating with the accommodation cavity.

[0013] According to an embodiment of the present disclosure, it further includes a material level detection element arranged in the box body for detecting the fire extinguishing agent level.

[0014] Beneficial effects:

[0015] (1) The battery pack explosion-proof box of the present disclosure can receive abnormal battery packs carried from different directions, can be applicable to different handling scenarios, and has a wide application range.

[0016] (2) The battery pack explosion-proof box of the present disclosure can maintain a predetermined open state after being opened, which is convenient for loading the battery pack.

[0017] (3) For the battery pack explosion-proof box of the present disclosure, the auxiliary handle and the main handle can be used by multiple people to cooperate to open the first door body, which is convenient for opening the first door body with a large gravity. Description of the drawings

[0018] Figure 1 is a schematic structural diagram of the battery pack explosion-proof box according to an embodiment of the present disclosure at an angle.

[0019] Figure 2 is a schematic structural diagram of the battery pack explosion-proof box according to an embodiment of the present disclosure when both the first door body and the second door body are opened.

[0020] Figure 3 is a schematic structural diagram of the first inlet and outlet according to an embodiment of the present disclosure when it is opened alone.

[0021] Figure 4 is a schematic structural diagram of the second inlet and outlet according to an embodiment of the present disclosure when it is opened alone.

[0022] Figure 5 is a schematic structural diagram of the battery pack explosion-proof box according to an embodiment of the present disclosure at another angle.

[0023] 10. Box body; 11. Box main body; 12. First door; 121. Restricted part; 13. Second door; 131. First side door; 132. Second side door; 101. Accommodation cavity; 102. First inlet and outlet; 103. Second inlet and outlet;

[0024] 20. Exhaust valve;

[0025] 30. Pressure relief valve;

[0026] 40. Pressure detection part;

[0027] 50. Material level detection element;

[0028] 61. Main handle; 62. Auxiliary handle;

[0029] 70. Stopper; 701. Stopping surface; 702. Avoidance notch;

[0030] 80. Telescopic part; 81. Cylinder block; 82. Telescopic rod;

[0031] 800. Water inlet pipe; 900. Water outlet pipe. Detailed implementation mode

[0032] The following description is used to disclose the present disclosure so that those skilled in the art can implement the present disclosure. The preferred embodiments in the following description are only examples, and those skilled in the art can think of other obvious variations. The basic principles defined in the following description can be applied to other implementation schemes, deformation schemes, improvement schemes, equivalent schemes, and other technical schemes without departing from the spirit and scope of the present disclosure.

[0033] Those skilled in the art should understand that in the disclosure of the present disclosure, the orientation or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. It is only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limiting the present disclosure.

[0034] It can be understood that the term "one" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of one element can be one, while in other embodiments, the number of this element can be multiple. The term "one" should not be construed as limiting the quantity.

[0035] In the present disclosure, unless otherwise clearly defined and limited, terms such as "installed", "connected", "coupled", "fixed", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or capable of communicating with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0036] In the related art, when an abnormal phenomenon occurs in a battery pack, such as overheating or catching fire, the battery pack needs to be placed in an explosion-proof box and transferred away. However, when the battery pack is transferred away, different transfer tools are used according to different on-site situations. For example, a crane on-site is used to lift the abnormal battery pack into the explosion-proof box, or the fork of a forklift on-site is used to lift the abnormal battery pack into the explosion-proof box. However, the explosion-proof boxes in the related art often have only one inlet and outlet for the battery pack to enter and exit. For different transfer tools, explosion-proof boxes with different opening orientations often need to be designed, resulting in a single function and a small application range of the explosion-proof box.

[0037] In view of this, the battery pack explosion-proof box of the embodiments of the present disclosure can be applicable to the above different scenarios, can receive battery packs from different directions in different handling scenarios, and has a wide application range.

[0038] Figure 1 is a schematic structural view of the battery pack explosion-proof box of the embodiments of the present disclosure at an angle. Refer to Figure 1 The battery pack explosion-proof box includes a box body 10 for storing the battery pack. The box body 10 includes a box main body 11, a first door body 12, and a second door body 13.

[0039] Figure 2 is a schematic structural view of the battery pack explosion-proof box of the embodiments of the present disclosure when both the first door body 12 and the second door body 13 are opened. Refer to Figure 1 and Figure 2 , the box main body 11 forms a receiving cavity 101 for accommodating the battery pack, and the box main body 11 forms a first inlet and outlet 102 and a second inlet and outlet 103 that are communicated with the receiving cavity 101 and through which the battery pack enters and exits. The openings of the first inlet and outlet 102 and the second inlet and outlet 103 face different directions.

[0040] Thus, when the abnormal battery pack is carried from the direction facing the first inlet and outlet 102, the abnormal battery pack can be placed into the receiving cavity 101 through the first inlet and outlet 102. When the abnormal battery pack is carried from the direction facing the second inlet and outlet 103, the abnormal battery pack can be placed into the receiving cavity 101 through the second inlet and outlet 103.

[0041] Optionally, the first inlet / outlet 102 is provided at the top of the box body 11 and opens upward. The second inlet / outlet 103 is provided at the side of the box body 11 and opens toward the outer peripheral side.

[0042] Thus, when an abnormal battery pack is lifted by a crane and transported in a lifted manner, the lifted abnormal battery pack can be put into the accommodation cavity 101 through the first inlet / outlet 102 that opens upward. When the abnormal battery pack is transported by the fork of a forklift, the abnormal battery pack can be transported into the second inlet / outlet 103 and enter the accommodation cavity 101 in a transported manner, so that the explosion-proof box for battery packs can receive abnormal battery packs transported from different directions by a crane and a forklift, and can be applicable to different handling scenarios.

[0043] Of course, it can be understood that the opening directions of the first inlet / outlet 102 and the second inlet / outlet 103 in the embodiments of the present disclosure include but are not limited to this. For example, the first inlet / outlet 102 and the second inlet / outlet 103 can also be considered to be provided on different side walls of the box body 11, so as to receive abnormal battery packs from different peripheral sides of the box body 11.

[0044] Figure 3 is a schematic structural diagram when the first inlet / outlet 102 of the embodiment of the present disclosure is opened alone. Figure 4 is a schematic structural diagram when the second inlet / outlet 103 of the embodiment of the present disclosure is opened alone. Refer to Figure 3 and Figure 4 The first door body 12 is provided at the first inlet / outlet 102 for opening and closing the first inlet / outlet 102. The second door body 13 is provided at the second inlet / outlet 103 for opening and closing the second inlet / outlet 103, and the opening and closing movements of the first door body 12 and the second door body 13 are independent of each other.

[0045] In other words, the first door body 12 can correspondingly close and open the first inlet / outlet 102. The second door body 13 can correspondingly open and close the second inlet / outlet 103. And the process of the first door body 12 opening and closing the first inlet / outlet 102 is independent of the process of the second door body 13 opening and closing the second inlet / outlet 103, and the two do not affect each other. Thus, in one handling scenario, such as a lifting handling scenario, relevant technicians can correspondingly control the first inlet / outlet 102 to open alone. In another handling scenario, such as a forklift handling scenario, relevant technicians can correspondingly control the second inlet / outlet 103 to open alone, so as to be applicable to different handling scenarios.

[0046] Optionally, the first door body 12 is rotatably arranged on the box body 11 toward and away from the first inlet / outlet 102, so as to close the first inlet / outlet 102 by rotating toward the first inlet / outlet 102, and to open the first inlet / outlet 102 by rotating away from the first inlet / outlet 102. In some examples, the first door body 12 is arranged on the box body 11 to be rotatable up and down, so as to open and close the upwardly open first inlet / outlet 102 by rotating up and down.

[0047] Optionally, the second door body 13 is rotatably arranged on the box body 11 toward and away from the second inlet / outlet 103, so as to close the second inlet / outlet 103 by rotating toward the second inlet / outlet 103, and to open the second inlet / outlet 103 by rotating away from the second inlet / outlet 103.

[0048] Specifically, when the second inlet / outlet 103 is open forward or backward, the second door body 13 is arranged on the box body 11 to be rotatable back and forth, so as to open and close the first inlet / outlet 102 by rotating back and forth. When the second inlet / outlet 103 is open leftward or rightward, the second door body 13 is arranged on the box body 11 to be rotatable left and right, so as to open and close the second inlet / outlet 103 by rotating left and right.

[0049] Optionally, the second door body 13 can be a single-leaf door or a double-leaf door. Refer to Figure 4 , when the second door body 13 is a double-leaf door, the second door body 13 includes a first side door 131 and a second side door 132. The first side door 131 and the second side door 132 are rotatably arranged on opposite sides of the second inlet / outlet 103, and the first side door 131 and the second side door 132 are used to cooperate to close the second inlet / outlet 103. Thus, when opening the second inlet / outlet 103, the second door body 13 of the double-leaf door occupies a small external operation space, which is convenient for relevant technical personnel to open the second inlet / outlet 103.

[0050] Optionally, refer to Figure 1 , the battery pack explosion-proof box further includes an exhaust valve 20. The exhaust valve 20 is arranged on the box body 10. Thus, the gas in the box body 10 can be discharged to the external environment outside the box body 10 through the exhaust valve 20, which plays a role in preventing the pressure in the box body 10 from being too high.

[0051] Optionally, refer to Figure 1, the battery pack explosion-proof box further includes a pressure relief valve 30. The pressure relief valve 30 is arranged on the box body 10. Thus, when the pressure in the box body 10 is too high, for example, an abnormal battery pack in the box body 10 catches fire, so that the pressure in the box body 10 increases sharply, the pressure relief valve 30 can be forced to open automatically by the pressure of the gas in the box body 10, so that the gas pressure in the box body 10 can be quickly reduced, thereby preventing the battery pack explosion-proof box from being damaged due to excessive internal pressure.

[0052] Optionally, see Figure 1 The battery pack explosion-proof box further includes a pressure detection component 40. The pressure detection component 40, such as a pressure gauge or a pressure sensor, is disposed in the box body 10 to detect the pressure in the accommodating cavity 101. Thus, relevant technicians can determine the internal pressure of the box body 10 according to the detection result of the pressure detection component 40, so as to timely understand the pressure situation in the box body 10.

[0053] Optionally, see Figure 1 and Figure 2 , the box body 10 forms a fire extinguishing agent inlet connected to the accommodating chamber 101. The fire extinguishing agent inlet is connected to the input pipe 800, and is used to receive the fire extinguishing agent delivered by the input pipe 800. The box body 10 forms a fire extinguishing agent outlet connected to the accommodating chamber 101. The fire extinguishing agent outlet is connected to the output pipe 900, and is used to output the fire extinguishing agent to the output pipe 900. Therefore, when the burning battery pack is placed in the box body 10, the fire extinguishing agent is introduced into the fire extinguishing agent inlet, so that the fire extinguishing agent enters the accommodating chamber 101 accommodating the burning battery pack and is then discharged through the fire extinguishing agent outlet, for example, by introducing water or lime into the fire extinguishing agent inlet, so that the water or lime enters the accommodating chamber 101 accommodating the burning battery pack and is then discharged through the fire extinguishing agent outlet, thereby extinguishing the burning battery pack.

[0054] Optionally, see Figure 3 The battery pack explosion-proof box further includes a material level detection element 50. The material level detection element 50 is disposed in the box body 10 and is used to detect the material level of the fire extinguishing agent. Thus, relevant technicians can detect the material level of the fire extinguishing agent through the material level detection element 50, thereby determining whether the fire extinguishing agent in the box body 10 has reached a predetermined material level, and can avoid waste caused by introducing too much fire extinguishing agent.

[0055] The material level detection component can be a liquid level sensor or a liquid level viewer. The liquid level sensor or the liquid level viewer is arranged in the box body 10 and is used for detecting the water level in the box body 10. The material level detection component can also be a material level sensor. The material level sensor is arranged in the box body 10 and is used for detecting the lime material level in the box body 10. Thus, relevant technical personnel can determine whether the extinguishing agent in the box body 10, such as water or lime, reaches a predetermined height by detecting the material level of the extinguishing agent in the box body 10, and can avoid wasting water by introducing too much water into the box body 10.

[0056] Optionally, referring to Figure 1 and Figure 3 , the battery pack explosion-proof box further includes a main handle 61 and at least one auxiliary handle 62. The main handle 61 is arranged on the first door body 12. The auxiliary handle 62 is arranged on the first door body 12, and the lowest height of the auxiliary handle 62 is greater than the lowest height of the main handle 61. Specifically, the main handle 61 is arranged parallel to the vertical plane, the auxiliary handle 62 is arranged parallel to the horizontal plane and is located at the top of the main handle 61, so that the lowest height of the main handle 61 is less than that of the auxiliary handle 62.

[0057] Thus, when the first door body 12 is rotated downward to close the first inlet and outlet 102, relevant technical personnel can first pull down the main handle 61 of the box body 10 placed at a predetermined height, so that the first door body 12 rotates downward by a certain angle. After the first door body 12 rotates downward by a certain angle, other personnel can pull down the auxiliary handle 62 to assist the person pulling the main handle 61 to continue pulling down the first door body 12, so as to completely close the first inlet and outlet 102 with the first door body 12. When the first door body 12 is rotated upward to open the first inlet and outlet 102, relevant technical personnel can first push up the main handle 61 of the box body 10 placed at a predetermined height, so that the first door body 12 rotates upward by a certain angle, which is convenient for the subsequent complete opening of the first door body 12. Thus, due to the existence of the main handle 61 and the auxiliary handle 62, even if the first door body 12 has a large gravity, the first door body 12 can be smoothly opened or closed manually.

[0058] Figure 5 is a schematic structural diagram of the battery pack explosion-proof box according to an embodiment of the present disclosure from another angle. Referring to Figure 3 and Figure 5, the explosion-proof box of the battery pack further includes a stopper 70 and a telescopic member 80. Among them, the stopper 70 is provided on the box body 11 and is located on the rotation path of the first door 12 for stopping the first door 12. The telescopic member 80 is rotatably connected to the first door 12 and the box body 11 respectively, and elongates and rotates into a state capable of providing a supporting force to the blocked first door 12 when the first door 12 is opened, so as to limit the rotation of the blocked first door 12.

[0059] In other words, during the process of the first door 12 rotating and opening, the first door 12 will be blocked and limited by the stopper 70. During the above process, the telescopic member 80 will elongate and rotate correspondingly with the rotation of the first door 12. When the first door 12 is blocked by the stopper 70, the telescopic member 80 will rotate into a state capable of providing a supporting force to the first door 12, thereby restricting the rotation of the blocked first door 12 and keeping the first door 12 in the corresponding open state. Thus, after the relevant personnel open the first door 12 and leave the explosion-proof box of the battery pack, the cooperation of the stopper 70 and the telescopic member 80 can keep the first door 12 in the open state when it is blocked, which is convenient for loading the abnormal battery pack into the opened first inlet and outlet 102.

[0060] Optionally, a protruding restricted portion 121 is formed on the upper surface of the first door 12, and the stopper 70 forms a stop surface 701 located on the rotation path of the restricted portion 121 to stop the restricted portion 121. Thus, when the restricted portion 121 is blocked by the stop surface 701, the first door 12 is blocked, and the opening rotation of the first door 12 is restricted.

[0061] Optionally, the stopper 70 is provided on the side of the box body 11, and the stop surface 701 is inclined or horizontally arranged towards the first door 12.

[0062] Specifically, when the stop surface 701 is horizontally arranged, the rotation angle of the first door 12 can be limited within 90 degrees. When the stop surface 701 is inclined towards the first door 12, for example, when the stop surface 701 is inclined 5 degrees towards the first door 12, the rotation angle of the first door 12 can be limited within 85 degrees. Thus, the rotation angle of the first door 12 can be limited within 90 degrees, avoiding excessive opening rotation of the first door 12 and facilitating the subsequent closing of the first door 12.

[0063] Optionally, the telescopic member 80 includes a cylinder body 81 and a telescopic rod 82. A compression chamber is formed in the cylinder body 81 for accommodating compressed gas, such as nitrogen, and the cylinder body 81 is rotatably connected to the box body 11. The telescopic rod 82 is telescopically arranged in the cylinder body 81, and the telescopic rod 82 is rotatably connected to the first door body 12.

[0064] Thus, when the first door body 12 closes the first inlet / outlet 102, the telescopic rod 82 is retractedly arranged in the cylinder body 81, so that the compressed gas in the cylinder body 81 is highly compressed. During the process of the first door body 12 rotating upward to be opened, the telescopic rod 82 will gradually extend out of the cylinder body 81 and rotate under the drive of the first door body 12 and the restoring force of the compressed gas until the first door body 12 is blocked by the stopper 70. During the above process, the restoring force provided by the compressed gas can promote the opening of the first door body 12, which plays a role in saving effort for the relevant technicians to open the first door body 12. And the telescopic rod 82 and the cylinder body 81 will rotate into a posture capable of supporting the first door body 12. Thus, after the first door body 12 is blocked by the stopper 70, even if the first door body 12 has a tendency to rotate back under the action of gravity, a small accidental thrust or the impact force when being blocked, the restoring force provided by the compressed gas in the cylinder body 81 can offset the above-mentioned acting forces, so that the first door body 12 can be maintained at or close to the blocked position as much as possible, which is convenient for loading the abnormal battery pack.

[0065] Optionally, the stop surface 701 is located on the top surface of the stopper 70. Thus, when the restricted portion 121 is blocked by the stop surface 701, the restricted portion 121 is located above the stop surface 701, so that the first door body 12 can be supported by the stopper 70, thereby reducing the pressure borne by the telescopic member 80 during support.

[0066] Optionally, an avoidance notch 702 adapted to avoid the first door body 12 is formed on the side of the stopper 70 facing the first door body 12. Thus, when the first door body 12 is rotated and opened and the restricted portion 121 rotates towards the stop surface 701, the avoidance notch 702 can form an avoidance for the first door body 12, so as to ensure that the restricted portion 121 can smoothly reach the position of the stop surface 701 and be smoothly blocked by the stop surface 701.

[0067] Those skilled in the art should understand that the embodiments of the present disclosure described above and shown in the accompanying drawings are only examples and do not limit the present disclosure. The advantages of the present disclosure have been fully and effectively realized. The functions and structural principles of the present disclosure have been demonstrated and explained in the embodiments, and the embodiments of the present disclosure can have any variations or modifications without departing from the above principles.

Claims

1. Battery pack explosion-proof box, characterized in that: A box for storing a battery pack is included, the box comprising: The box body is formed with a receiving cavity for receiving the battery pack, and is formed with a first inlet and a second inlet and a second inlet which are communicated with the receiving cavity and are used for the battery pack to enter and exit, and the first inlet and the second inlet have openings in different directions; A first door body, provided at the first entrance and exit, for opening and closing the first entrance and exit; and The second door body is arranged at the second entrance and exit, and is used for opening and closing the second entrance and exit, and the opening and closing movement of the first door body and the opening and closing movement of the second door body are independent of each other.

2. The battery pack explosion-proof box according to claim 1, characterized in that: The first inlet and outlet are provided at the top of the box body so as to be opened upward, and the second inlet and outlet are provided at the side of the box body so as to be opened toward the outer peripheral side.

3. The battery pack explosion-proof box according to claim 2, characterized in that: The first door body is rotatably disposed on the box body toward and away from the first inlet and outlet, so as to rotate to open and close the first inlet and outlet.

4. The battery pack explosion-proof box according to claim 3, characterized in that: A main handle, provided on the first door body; and The auxiliary handle is arranged on the first door body, and the lowest point height is greater than the lowest point height of the main handle.

5. The battery pack explosion-proof box according to claim 1, characterized in that: The second door body is rotatably disposed on the box body toward and away from the second inlet and outlet, so as to rotate to open and close the second inlet and outlet.

6. The battery pack explosion-proof box according to claim 1, characterized in that: The second door body includes: a first side door and a second side door, which are rotatably disposed on opposite sides of the second entrance and exit and cooperate to close the second entrance and exit.

7. The explosion-proof box for battery pack according to claim 1, characterized in that: Also includes: an exhaust valve, disposed in the housing; and / or A pressure relief valve is arranged in the box body.

8. The explosion-proof box for battery pack according to claim 1, characterized in that: Also includes: The pressure detection component is arranged in the box body and is used to detect the pressure in the accommodating cavity.

9. The battery pack explosion-proof box according to claim 1, characterized in that: The box body forms a fire extinguishing agent inlet and a fire extinguishing agent outlet which are communicated with the accommodating chamber.

10. The explosion-proof box for battery pack according to claim 9, characterized in that: Also includes: The material level detection element is arranged in the box body and is used to detect the fire extinguishing agent material level.

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