Enclosure, battery pack, and transportation vehicle

Abstract

The application relates to the technical field of power batteries, and provides a box body, a battery pack and a traffic carrier. The box body comprises a bottom plate, a side beam, an exhaust pipeline and an exhaust explosion-proof valve. The side beam is connected to one side of the bottom plate. A first exhaust passage is arranged in the bottom plate. A second exhaust passage is arranged in the side beam. One end of the exhaust pipeline is connected to the bottom plate, and the other end of the exhaust pipeline is connected to the side beam. The first exhaust passage and the second exhaust passage are communicated through the exhaust pipeline. The exhaust explosion-proof valve is arranged in the side beam and located in the second exhaust passage. The exhaust explosion-proof valve and the exhaust pipeline are arranged at intervals on the extension path of the second exhaust passage. The application has the beneficial effect that by arranging the exhaust explosion-proof valve and the exhaust pipeline at intervals on the extension path of the second exhaust passage, the flow path of the cell spewing matter in the side beam is prolonged after the cell spewing matter enters the second exhaust passage through the exhaust pipeline, the cell spewing matter is prevented from being directly spouted from the exhaust explosion-proof valve, and the safety is improved.

Description

Technical Field

[0001] This application relates to the field of battery technology, and more specifically, to a housing, a battery pack, and a vehicle. Background Technology

[0002] In related technologies, when a battery pack experiences thermal runaway, ejected material from the cells is discharged outside the battery pack through a smoke extraction structure within the pack. However, the smoke extraction structure is limited by the internal space and structure of the battery pack, resulting in an unreasonable flow path for the ejected material, which may pose a safety hazard. Utility Model Content

[0003] In view of this, this application provides a housing, a battery pack, and a vehicle to solve the technical problem of safety hazards in the smoke exhaust structure of the battery pack.

[0004] One embodiment of this application provides a housing. The housing includes a bottom plate, side beams, an exhaust pipe, and an explosion-proof exhaust valve. The side beams are connected to one side of the bottom plate. A first exhaust channel is provided within the bottom plate. A second exhaust channel is provided within the side beams. One end of the exhaust pipe is connected to the bottom plate, and the other end of the exhaust pipe is connected to the side beam. The first exhaust channel and the second exhaust channel are connected through the exhaust pipe. The explosion-proof exhaust valve is disposed on the side beam and located within the second exhaust channel. The explosion-proof exhaust valve and the exhaust pipe are spaced apart along the extension path of the second exhaust channel.

[0005] When a single battery cell in the enclosure experiences thermal runaway, ejected material from the cell enters the first venting channel on the base plate. The venting pipe guides this material from the first venting channel to the side beam, where it is then discharged outside the enclosure via an explosion-proof valve. By intermittently placing the explosion-proof valve and venting pipe along the extended path of the second venting channel, the ejected material, after entering through the venting pipe, continues to flow along this extended path until it reaches the explosion-proof valve, where it is depressurized. This extends the flow path of the ejected material within the side beam, preventing it from being directly ejected from the explosion-proof valve and thus improving safety.

[0006] In some embodiments, the base plate includes a bottom protective plate and a bottom cover plate spaced apart. A first exhaust channel is formed between the bottom protective plate and the bottom cover plate. The bottom cover plate has a first exhaust hole. One end of the exhaust pipe communicates with the first exhaust hole. The bottom cover plate is a liquid cooling plate or a support plate.

[0007] The space between the bottom protective plate and the bottom cover plate is used to form a first exhaust channel. A first exhaust hole is opened in the bottom cover plate, and one end of the exhaust pipe is connected to the first exhaust hole. This allows the battery cell ejection material to enter the exhaust pipe from the first exhaust channel through the first exhaust hole. No additional structure is needed to guide the battery cell ejection material into the exhaust pipe, saving space in the enclosure and improving the utilization rate of the enclosure volume. When the bottom cover plate is a liquid cooling plate, it can cool the battery cell ejection material flowing in the first exhaust channel. When the bottom cover plate is a support plate, it is used to support the battery cells or battery modules installed inside the enclosure.

[0008] In some embodiments, the side beam is connected to the side of the bottom cover plate away from the bottom protective plate. The side beam includes a first side plate and a second side plate. The first side plate and the second side plate are spaced apart in a direction parallel to the bottom cover plate. A second exhaust channel is formed between the first side plate and the second side plate. The first side plate has a second exhaust hole. The other end of the exhaust channel communicates with the second exhaust hole. An exhaust explosion-proof valve is disposed on the second side plate.

[0009] The side beam is connected to the bottom cover plate, and a second exhaust channel is formed by utilizing the space between the first and second side plates. This channel is connected to an exhaust pipe via a second exhaust hole located on the first side plate, allowing the battery cell ejection material to enter the second exhaust channel through the exhaust pipe. The first and second side plates not only provide structural support for the enclosure but also embed the second exhaust channel within them, reducing the space occupied by the second exhaust channel within the enclosure. The first side plate also isolates the battery cell ejection material entering the second exhaust channel from the interior of the enclosure.

[0010] In some embodiments, there are multiple side beams. The multiple side beams are connected sequentially and enclose a base plate to form an accommodating space. The accommodating space is used to accommodate the battery module. The other end of an exhaust pipe is connected to one of the side beams. There is at least one exhaust explosion-proof valve. At least one exhaust explosion-proof valve is disposed on any one or more of the multiple side beams.

[0011] When there is only one explosion-proof valve and the explosion-proof valve and the exhaust pipe are connected to the same side beam, after the battery cell ejected material enters the second exhaust channel within the side beam through the exhaust pipe, the ejected material will continue to flow for a distance within the side beam until it is discharged from the explosion-proof valve, because the explosion-proof valve and the exhaust pipe are spaced apart along the extension path of the second exhaust channel. When the explosion-proof valve and the exhaust pipe are connected to different side beams, after the battery cell ejected material enters the second exhaust channel within the side beam through the exhaust pipe, it will continue to flow within the side beam until it reaches the side beam where the explosion-proof valve is located. This can further extend the flow path of the ejected material.

[0012] When there are multiple exhaust explosion-proof valves, the material ejected from the battery cell enters the second exhaust channel inside the side beam through the exhaust pipe, and can be discharged to the outside of the enclosure through the nearest exhaust explosion-proof valve.

[0013] In some embodiments, the side beam further includes at least two reinforcing ribs. The reinforcing ribs connect the first side plate and the second side plate. The at least two reinforcing ribs are spaced apart in a direction perpendicular to the bottom cover plate. The two reinforcing ribs, the first side plate, and the second side plate together form a second exhaust channel.

[0014] The addition of reinforcing ribs can improve the overall structural strength of the side beam. Two reinforcing ribs, together with the first and second side plates, directly enclose and form a second venting channel, eliminating the need for a separate venting channel. Furthermore, the two reinforcing ribs can guide the flow of the battery cell ejected material within the side beam, reducing its disordered flow.

[0015] In some embodiments, the enclosure further includes a battery cell compartment, an electrical compartment, and a crossbeam connected to the side of the bottom cover plate away from the bottom protective plate. The battery cell compartment and the electrical compartment are separated by the crossbeam. The bottom cover plate also has a third vent. The third vent communicates with a first vent channel. The third vent is located in the battery cell compartment. The first vent is located in the electrical compartment. An exhaust pipe is located in the electrical compartment.

[0016] By opening a third vent on the bottom cover, the battery cell ejection material can enter the first vent channel between the bottom cover and the bottom protective plate through the third vent, and then enter the exhaust pipe through the first vent on the bottom cover. There is no need to set up an additional structure to guide the battery cell ejection material from the battery cell compartment to the exhaust pipe. At the same time, setting the exhaust pipe in the battery compartment will not occupy the space of the battery cell compartment, which can improve the energy density of the battery pack.

[0017] In some embodiments, the exhaust duct has an arc-shaped structure. The concave side of the arc-shaped structure faces the junction of the base plate and the side beam.

[0018] The arc-shaped exhaust pipe can provide an arc-shaped path, allowing the ejected material from the battery cell to flow more smoothly within the exhaust pipe, which helps to improve smoke extraction efficiency.

[0019] In some embodiments, the housing further includes a seal and fasteners. The seal is located between the side beams and the bottom plate. Fasteners pass sequentially through the bottom plate, the seal, and the side beams to securely connect the bottom plate and the side beams.

[0020] Installing a seal between the base plate and the side beams helps improve the overall sealing performance of the enclosure, preventing leakage of battery cell ejection material. Using fasteners to securely connect the base plate, seals, and side beams ensures structural strength at the connection point and also facilitates disassembly and maintenance.

[0021] One embodiment of this application provides a battery pack. The battery pack includes a battery module and a housing as described in any of the above embodiments. The battery module is disposed within the housing.

[0022] One embodiment of this application provides a transportation vehicle. The transportation vehicle includes a battery pack as described in any of the above embodiments. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation on the scope.

[0024] Figure 1 This is a schematic diagram of the structure of a box provided in one embodiment of this application; Figure 2 This is a partial perspective view of a box provided in an embodiment of this application; Figure 3 for Figure 1 A partial schematic diagram of the AA section view; Figure 4 This is a schematic diagram of the structure of the exhaust explosion-proof valve at the second side beam; Figure 5 This is a schematic diagram of the structure of a transportation vehicle provided in one embodiment of this application.

[0025] Explanation of key component symbols: 100. Housing; 101. Battery cell compartment; 102. Electrical compartment; 1. Bottom plate; 10. First exhaust channel; 11. Bottom protective plate; 12. Bottom cover plate; 121. First exhaust port; 122. Third exhaust port; 2. Side beam; 21. First side plate; 211. Second exhaust port; 22. Second side plate; 23. Reinforcing rib; 20. Second exhaust channel; 201. First side beam; 202. Second side beam; 3. Exhaust pipe; 4. Exhaust explosion-proof valve; 41. Valve body; 5. Seal; 6. Fastener; 61. Rivet nut; 62. Fastening bolt; 7. Crossbeam; 200. Battery pack; 8. Battery cell; 300. Vehicle. Detailed Implementation

[0026] To make the technical problems, technical solutions, and beneficial effects solved by this application clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0027] An embodiment of this application provides a housing. The housing includes a bottom plate, side beams, an exhaust pipe, and an explosion-proof exhaust valve. The side beams are connected to one side of the bottom plate. A first exhaust channel is provided within the bottom plate. A second exhaust channel is provided within the side beams. One end of the exhaust pipe is connected to the bottom plate, and the other end of the exhaust pipe is connected to the side beam. The first exhaust channel and the second exhaust channel are connected through the exhaust pipe. The explosion-proof exhaust valve is disposed on the side beam and located within the second exhaust channel. The explosion-proof exhaust valve and the exhaust pipe are spaced apart along the extension path of the second exhaust channel.

[0028] When a single battery cell in the enclosure experiences thermal runaway, ejected material from the cell enters the first venting channel on the base plate. The venting pipe guides this material from the first venting channel to the side beam, where it is then discharged outside the enclosure via an explosion-proof valve. By intermittently placing the explosion-proof valve and venting pipe along the extended path of the second venting channel, the ejected material, after entering through the venting pipe, continues to flow along this extended path until it reaches the explosion-proof valve, where it is depressurized. This extends the flow path of the ejected material within the side beam, preventing it from being directly ejected from the explosion-proof valve and thus improving safety.

[0029] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0030] Please see Figures 1 to 3 One embodiment of this application provides a housing 100. The housing 100 includes a base plate 1, a side beam 2, an exhaust pipe 3, and an exhaust explosion-proof valve 4. The side beam 2 is connected to one side of the base plate 1. A first exhaust channel 10 is provided in the base plate 1. A second exhaust channel 20 is provided in the side beam 2. One end of the exhaust pipe 3 is connected to the base plate 1, and the other end of the exhaust pipe 3 is connected to the side beam 2. The first exhaust channel 10 and the second exhaust channel 20 are connected through the exhaust pipe 3. The exhaust explosion-proof valve 4 is disposed on the side beam 2 and located in the second exhaust channel 20. The exhaust explosion-proof valve 4 and the exhaust pipe 3 are spaced apart along the extension path of the second exhaust channel 20.

[0031] When a single battery cell in the housing 100 experiences thermal runaway, ejected material from the cell enters the first exhaust channel 10 of the base plate 1. The exhaust pipe 3 guides the ejected material from the first exhaust channel 10 to the side beam 2, and then the ejected material is discharged outside the housing 100 via the exhaust explosion-proof valve 4. By spaced out the exhaust explosion-proof valve 4 and the exhaust pipe 3 along the extension path of the second exhaust channel 20, the ejected material, after entering the second exhaust channel 20 in the side beam 2 via the exhaust pipe 3, needs to continue flowing along the extension path of the second exhaust channel 20 until it reaches the exhaust explosion-proof valve 4, where it is depressurized. This extends the flow path of the ejected material in the side beam 2, preventing it from being directly ejected from the exhaust explosion-proof valve 4, thereby improving safety.

[0032] Please see Figure 3In some embodiments, the base plate 1 includes a base guard plate 11 and a base cover plate 12 spaced apart. A first exhaust channel 10 is formed between the base guard plate 11 and the base cover plate 12. The base cover plate 12 has a first exhaust hole 121. One end of the exhaust pipe 3 communicates with the first exhaust hole 121. The base cover plate 12 is a liquid cooling plate or a support plate.

[0033] A first exhaust channel 10 is formed by utilizing the space between the bottom protective plate 11 and the bottom cover plate 12. A first exhaust hole 121 is opened in the bottom cover plate 12, and one end of the exhaust pipe 3 is connected to the first exhaust hole 121. This allows the battery cell ejection material to enter the exhaust pipe 3 from the first exhaust channel 10 through the first exhaust hole 121. No additional structure is needed to guide the battery cell ejection material into the exhaust pipe 3, without occupying space in the housing 100, thus improving the utilization rate of the housing 100's volume. When the bottom cover plate 12 is a liquid cooling plate, it can cool the battery cell ejection material flowing in the first exhaust channel 10. When the bottom cover plate 12 is a support plate, it can be used to support the battery cells or battery modules installed inside the housing 100.

[0034] Please see Figure 3 and Figure 4 In some embodiments, the side beam 2 is connected to the side of the bottom cover plate 12 away from the bottom protective plate 11. The side beam 2 includes a first side plate 21 and a second side plate 22. The first side plate 21 and the second side plate 22 are spaced apart in a direction parallel to the bottom cover plate 12. A second exhaust channel 20 is formed between the first side plate 21 and the second side plate 22. The first side plate 21 has a second exhaust hole 211. The other end of the exhaust pipe 3 communicates with the second exhaust hole 211. An exhaust explosion-proof valve 4 is disposed on the second side plate 22.

[0035] Side beam 2 is connected to bottom cover plate 12, and then a second exhaust channel 20 is formed by the space between the first side plate 21 and the second side plate 22. This channel is connected to the exhaust pipe 3 via a second exhaust hole 211 located on the first side plate 21, allowing the battery cell ejection material to enter the second exhaust channel 20 through the exhaust pipe 3 via the second exhaust hole 211. The first side plate 21 and the second side plate 22 not only provide structural support for the housing 100, but also embed the second exhaust channel 20 within it, reducing the space occupied by the second exhaust channel 20 within the housing 1002. The first side plate 21 can also isolate the battery cell ejection material entering the second exhaust channel 20 from the interior of the housing 100. It should be noted that "parallel to bottom cover plate 12" refers to the plane parallel to the large surface of bottom cover plate 12.

[0036] Please see Figure 2In some embodiments, there are multiple side beams 2. The multiple side beams 2 are connected sequentially and enclose the base plate 1 to form an accommodating space. The accommodating space is used to accommodate a battery module. The battery module includes battery cells 8 and a battery management system. The other end of the exhaust pipe 3 is connected to one of the side beams 2. There is at least one exhaust explosion-proof valve 4. At least one exhaust explosion-proof valve 4 is disposed on any one or more of the multiple side beams 2.

[0037] When there is only one explosion-proof valve 4, and the explosion-proof valve 4 and the exhaust pipe 3 are connected to the same side beam 2, after the battery cell ejected material enters the second exhaust channel 20 within the side beam 2 through the exhaust pipe 3, the ejected material will continue to flow within the side beam 2 for a distance until it is discharged from the explosion-proof valve 4 due to the spaced arrangement of the explosion-proof valve 4 and the exhaust pipe 3 along the extension path of the second exhaust channel 20. When the explosion-proof valve 4 and the exhaust pipe 3 are connected to different side beams 2, after the ejected material enters the second exhaust channel 20 within the side beam 2 through the exhaust pipe 3, it will continue to flow within the side beam 2 until it reaches the side beam 2 where the explosion-proof valve 4 is located. This can further extend the flow path of the ejected material. Figure 2 In the illustrated embodiment, the side beam 2 includes a first side beam 201 and a second side beam 202. An exhaust pipe 3 is connected to the first side beam 201, and an exhaust explosion-proof valve 4 is disposed on the second side beam 202. Figure 2 In this embodiment, the first side beam 201 and the second side beam 202 are arranged adjacent to each other. In some embodiments, the first side beam 201 and the second side beam 202 may also be arranged opposite to each other.

[0038] When there are multiple exhaust explosion-proof valves 4, the material ejected from the battery cell enters the second exhaust channel 20 inside the side beam 2 through the exhaust pipe 3, and can be discharged to the outside of the housing 100 through the nearest exhaust explosion-proof valve 4.

[0039] Please see Figure 3 and Figure 4 In some embodiments, the side beam 2 further includes at least two reinforcing ribs 23. The reinforcing ribs 23 are connected between the first side plate 21 and the second side plate 22. The at least two reinforcing ribs 23 are spaced apart in a direction perpendicular to the bottom cover plate 12. The two reinforcing ribs 23, the first side plate 21 and the second side plate 22 enclose and form a second exhaust channel 20.

[0040] The reinforcing ribs 23 can improve the structural strength of the entire side beam 2. The second exhaust channel 20 is directly formed by the two reinforcing ribs 23, the first side plate 21, and the second side plate 22, eliminating the need for a separate second exhaust channel 20. Furthermore, the two reinforcing ribs 23 can guide the flow of the battery cell ejected material within the side beam 2, reducing the disordered flow of the battery cell ejected material within the side beam 2.

[0041] Please see Figure 2 and Figure 3In some embodiments, the housing 100 further includes a battery cell compartment 101, an electrical compartment 102, and a crossbeam 7, which is connected to the side of the bottom cover plate 12 away from the bottom protective plate 11. The battery cell compartment 101 and the electrical compartment 102 are separated by the crossbeam 7. The bottom cover plate 12 also has a third vent 122. The third vent 122 communicates with the first vent channel 10. The third vent 122 is located in the battery cell compartment 101. The first vent 121 is located in the electrical compartment 102. The vent pipe 3 is disposed in the electrical compartment 102.

[0042] By opening a third vent 122 on the bottom cover plate 12, the ejected material from the battery cell can enter the first vent channel 10 between the bottom cover plate 12 and the bottom protective plate 11 through the third vent 122, and then enter the vent pipe 3 through the first vent 121 on the bottom cover plate 12. No additional structure is needed to guide the ejected material from the battery cell compartment 101 to the vent pipe 3. Furthermore, placing the vent pipe 3 in the electrical compartment 102 does not occupy space in the battery cell compartment 101, thus improving the energy density of the battery pack. It should be noted that the battery cell compartment 101 is used to house the battery cells 8, and the electrical compartment 102 is used to house the battery management system.

[0043] Please see Figure 3 In some embodiments, the exhaust pipe 3 has an arc-shaped structure. The concave side of the arc-shaped structure faces the connection between the base plate 1 and the side beam 2.

[0044] The arc-shaped exhaust pipe 3 can provide an arc path, making the flow of the battery cell ejected material within the exhaust pipe 3 smoother and helping to improve smoke extraction efficiency.

[0045] Please see Figure 3 and Figure 4 In some embodiments, the housing 100 further includes a seal 5 and a fastener 6. The seal 5 is located between the side beam 2 and the bottom plate 1. The fastener 6 passes sequentially through the bottom plate 1, the seal 5, and the side beam 2 to securely connect the bottom plate 1 and the side beam 2.

[0046] Installing a seal 5 between the base plate 1 and the side beam 2 helps improve the sealing performance of the entire enclosure 100 and prevents leakage of battery cell ejection material. Using fasteners 6 to fix the base plate 1, seal 5 and side beam 2 together helps ensure the structural strength of the connection between the base plate 1 and side beam 2, while also ensuring the convenience of disassembly and maintenance.

[0047] In some embodiments, the fastener 6 includes a rivet nut 61 and a fastening bolt 62. The rivet nut 61 provides an internal threaded connection point for the fastening bolt 62 to screw the base plate 1 and the side beam 2 together. In other embodiments, the rivet nut may not be required; instead, threads for connection with the fastening bolt 62 may be machined on the side beam 2 near the base plate 1. In other embodiments, the base plate 1 and the side beam 2 may be fixedly connected by welding or riveting.

[0048] Please see Figure 4 In some embodiments, the exhaust explosion-proof valve 4 includes a valve body 41. The valve body 41 extends through the first side plate 21 into the second exhaust channel 20. The battery cell ejected material passes sequentially through the first exhaust channel 10, the exhaust pipe 3, and the second exhaust channel 20 before being depressurized through the valve body 41.

[0049] One embodiment of this application provides a battery pack 200. The battery pack 200 includes a battery module and a housing 100 as described in any of the above embodiments. The battery module is disposed within the housing 100. Since the battery pack 200 includes all embodiments of all the technical solutions of the housing 100 described above, it has at least all the beneficial effects brought by all the above embodiments, which will not be described in detail here.

[0050] Please see Figure 5 One embodiment of this application provides a transportation vehicle 300. The transportation vehicle 300 includes a battery pack 200 as described in any of the above embodiments. Since the transportation vehicle 300 includes all embodiments of all technical solutions of the battery pack 200 described above, it has at least all the beneficial effects brought by all the above embodiments, which will not be described in detail here.

[0051] In some embodiments, the vehicle 300 may be, but is not limited to, an electric vehicle, a pure electric vehicle, a hybrid vehicle or a range-extended vehicle, a ship, a flying car, etc.

[0052] Terminology Explanation The terms “first,” “second,” and “third” are used for descriptive purposes only and should not be interpreted as indicating or implying relative importance.

[0053] The term "perpendicular" is used to describe an ideal state between two components. In actual production or use, two components can exist in a state that is approximately perpendicular. The two components described as "perpendicular" do not have to be absolute straight lines or planes, but can be roughly straight lines or planes. From a macroscopic perspective, if the overall direction of extension is a straight line or plane, the component can be considered a "straight line" or "plane".

[0054] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intervening component present. When a component is considered to be "located" on another component, it can be directly located on the other component or there may be an intervening component present.

[0055] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A box, characterized in that, include: The system includes a base plate, side beams, an exhaust pipe, and an exhaust explosion-proof valve. The side beams are connected to one side of the base plate. The base plate has a first exhaust channel, and the side beams have a second exhaust channel. One end of the exhaust pipe is connected to the base plate, and the other end of the exhaust pipe is connected to the side beam. The first exhaust channel and the second exhaust channel are connected through the exhaust pipe. The exhaust explosion-proof valve is disposed on the side beam and located in the second exhaust channel, and the exhaust explosion-proof valve and the exhaust pipe are spaced apart on the extension path of the second exhaust channel.

2. The housing according to claim 1, characterized in that, The base plate includes a bottom protective plate and a bottom cover plate spaced apart, with the bottom protective plate and the bottom cover plate forming the first exhaust channel. The bottom cover plate has a first exhaust hole, and one end of the exhaust pipe is connected to the first exhaust hole. The bottom cover plate is a liquid cooling plate or a support plate.

3. The housing according to claim 2, characterized in that, The side beam is connected to the side of the bottom cover plate away from the bottom protective plate. The side beam includes a first side plate and a second side plate. The first side plate and the second side plate are spaced apart in a direction parallel to the bottom cover plate. A second exhaust channel is formed between the first side plate and the second side plate. The first side plate has a second exhaust hole. The other end of the exhaust pipe is connected to the second exhaust hole. The exhaust explosion-proof valve is disposed on the second side plate.

4. The housing according to claim 1, characterized in that, The side beams are multiple in number, and the multiple side beams are connected in sequence and enclose the base plate to form an accommodating space, which is used to accommodate the battery module; the other end of the exhaust pipe is connected to one of the side beams, and the number of exhaust explosion-proof valves is at least one, and at least one exhaust explosion-proof valve is disposed on any one or more of the multiple side beams.

5. The housing according to claim 3, characterized in that, The side beam also includes at least two reinforcing ribs, which are connected between the first side plate and the second side plate. The at least two reinforcing ribs are spaced apart in a direction perpendicular to the bottom cover plate, and the two reinforcing ribs, the first side plate and the second side plate enclose and form the second exhaust channel.

6. The housing according to claim 2, characterized in that, The enclosure also includes a battery cell compartment, an electrical compartment, and a crossbeam. The crossbeam is connected to the side of the bottom cover plate away from the bottom protective plate. The battery cell compartment and the electrical compartment are separated by the crossbeam. The bottom cover plate is also provided with a third vent hole, which is connected to the first vent channel. The third vent hole is located in the battery cell compartment, and the first vent hole is located in the electrical compartment. The vent pipe is located in the electrical compartment.

7. The housing according to claim 1, characterized in that, The exhaust pipe has an arc-shaped structure, with the concave side of the arc-shaped structure facing the connection between the base plate and the side beam.

8. The housing according to claim 1, characterized in that, The enclosure also includes a seal and fasteners. The seal is located between the side beam and the bottom plate, and the fasteners pass through the bottom plate, the seal, and the side beam in sequence to fix the bottom plate and the side beam together.

9. A battery pack, characterized in that, It includes a battery module and a housing as described in any one of claims 1 to 8, wherein the battery module is disposed within the housing.

10. A transportation vehicle, characterized in that, Includes the battery pack as described in claim 9.

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