Power battery pack and vehicle

Abstract

To provide a power battery pack that can effectively prevent flame, smoke or gas discharged from a single cell from accumulating inside the battery pack.SOLUTION: A power battery pack includes a battery tray and a plurality of single cells 200 installed in the battery tray, each of the single cells 200 includes a cell explosion-proof valve 201, the battery tray includes a tray body, a gas passage is formed inside at least a portion of the tray body, a plurality of intake holes 31 and at least one exhaust hole are installed in the tray body, and at least some of the intake holes 31 are installed to face the cell explosion-proof valve 201 and have a one-to-one correspondence.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] (CROSS-REFERENCE TO RELATED APPLICATIONS) This disclosure is based on and claims priority from Chinese Patent Application No. 201811647593.5, filed on December 29, 2018, the entire contents of which are incorporated herein by reference.

[0002] The present disclosure relates to the field of electric vehicles, and more particularly to power battery packs and vehicles. [Background technology]

[0003] Power battery packs, as energy storage devices, are a core component of hybrid and electric vehicles. A power battery pack is primarily composed of a plurality of cells, a battery tray, and a cover plate. The battery tray is attached to the bottom of the vehicle, and the cover plate is hermetically connected to the battery tray, forming a sealed space for accommodating the plurality of cells. To prevent explosions, cells are typically equipped with explosion-proof valves. During battery use, when the internal air pressure reaches a certain level, the explosion-proof valve opens, allowing flames, smoke, or gases inside the cells to be released through the explosion-proof valve. In conventional technology, after the explosion-proof valve on a cell opens, the released flames, smoke, or gases accumulate inside the battery pack and cannot be released in a timely manner, easily causing secondary damage to the battery or affecting other batteries. Summary of the Invention [Problem to be solved by the invention]

[0004] The present disclosure provides a power battery pack that can effectively prevent flames, smoke, or gases emitted from cells from accumulating inside the battery pack. [Means for solving the problem]

[0005] In order to achieve the above object, the power battery pack of the present disclosure includes a battery tray and a plurality of cells installed on the battery tray, each cell having a cell explosion-proof valve, the battery tray includes a tray body, a gas passage is formed inside at least a part of the tray body, the tray body is provided with a plurality of air intake holes and at least one exhaust hole, at least some of the air intake holes are installed opposite and correspond one-to-one to the cell explosion-proof valves, flame, smoke or gas discharged from each cell explosion-proof valve enters the gas passage through the corresponding air intake hole, and the exhaust hole discharges the flame, smoke or gas in the gas passage.

[0006] In some embodiments of the present disclosure, at least a portion of the tray body has a hollow structure that serves as the gas passage.

[0007] In some embodiments of the present disclosure, the battery tray further includes a battery pack explosion-proof valve, and the exhaust hole is closed by the battery pack explosion-proof valve.

[0008] In some embodiments of the present disclosure, the tray body includes a bottom plate and side beams, the side beams are arranged around the bottom plate and together with the bottom plate define an accommodating space for the single battery, a gas passage is formed inside the side beams, and the intake hole and the exhaust hole are both arranged in the side beams.

[0009] In some embodiments of the present disclosure, the tray body includes a bottom plate and side beams, the side beams are arranged around the bottom plate and together with the bottom plate define a space for accommodating a single battery, gas passages are formed inside both the side beams and the bottom plate, and the two gas passages are connected to each other, the intake holes are arranged in the side beams, and the exhaust holes are arranged in the bottom plate.

[0010] In some embodiments of the present disclosure, the tray body includes a bottom plate and side beams, the side beams are arranged around the bottom plate and together with the bottom plate define an accommodating space for the single battery, a gas passage is formed inside the bottom plate, and the intake hole and the exhaust hole are both arranged in the bottom plate.

[0011] In some embodiments of the present disclosure, the tray body includes a bottom plate and side beams, the side beams are arranged around the bottom plate and together with the bottom plate define an accommodating space for the single battery cells, gas passages are formed inside both the side beams and the bottom plate, and the two gas passages are connected to each other, the intake holes are arranged in the bottom plate, and the exhaust holes are arranged in the side beams.

[0012] In some embodiments of the present disclosure, the tray body includes a bottom plate, side beams, and one or more partition plates, the side beams are arranged around the bottom plate and together with the bottom plate define a storage space for single cells, the partition plates are arranged on the bottom plate and divide the bottom plate into multiple areas for arranging single cells, gas passages are formed inside both the partition plates and the side beams, and the two gas passages are connected to each other, the intake hole is arranged in the partition plate, and the exhaust hole is arranged in the side beams.

[0013] In some embodiments of the present disclosure, the tray body includes a bottom plate, side beams, and one or more partition plates, the side beams are arranged around the bottom plate and together with the bottom plate define a storage space for the unit cells, the partition plates are arranged on the bottom plate and divide the bottom plate into a plurality of areas for arranging the unit cells, gas passages are formed inside both the partition plates and the bottom plate, and the two gas passages are connected to each other, the intake hole is arranged in the partition plate, and the exhaust hole is arranged in the bottom plate.

[0014] In some embodiments of the present disclosure, the tray body includes a bottom plate, side beams, and one or more partition plates, the side beams are arranged around the bottom plate and together with the bottom plate define an accommodating space for unit cells, the partition plates are arranged on the bottom plate and divide the bottom plate into a plurality of areas for arranging unit cells, gas passages are formed inside the partition plates, inside the side beams, and inside the bottom plate, the gas passages inside the partition plates communicate with the gas passages inside the side beams, and the gas passages inside the side beams communicate with the gas passages inside the bottom plate, the intake holes are arranged in the partition plates, and the exhaust holes are arranged in the bottom plate.

[0015] In some embodiments of the present disclosure, the tray body includes a bottom plate, side beams, and one or more partition plates, the side beams are arranged around the bottom plate and together with the bottom plate define an accommodating space for unit cells, the partition plates are arranged on the bottom plate and divide the bottom plate into a plurality of areas for arranging unit cells, gas passages are formed inside the partition plates, the side beams, and the bottom plate, the gas passages inside the partition plates communicate with the gas passages inside the bottom plate, and the gas passages inside the bottom plate communicate with the gas passages inside the side beams, the intake holes are arranged in the partition plates, and the exhaust holes are arranged in the side beams.

[0016] In some embodiments of the present disclosure, the tray body includes a bottom plate, side beams, and one or more partition plates, the side beams are installed around the bottom plate and together with the bottom plate define an accommodating space for unit cells, the partition plates are installed on the bottom plate and divide the bottom plate into multiple areas for arranging unit cells, gas passages are formed inside both the partition plates and the side beams, and the two gas passages are connected to each other, some air intake holes are installed in the partition plate, other air intake holes are installed in the side beams, and the exhaust hole is installed in the side beams.

[0017] In some embodiments of the present disclosure, the tray body includes a bottom plate, side beams, and one or more partition plates, the side beams are arranged around the bottom plate and together with the bottom plate define an accommodation space for the unit cells, the partition plates are arranged on the bottom plate and divide the bottom plate into a plurality of areas for arranging the unit cells, gas passages are formed inside both the partition plates and the bottom plate, and the two gas passages are connected to each other, some air intake holes are arranged in the partition plate, other air intake holes are arranged in the bottom plate, and the exhaust hole is arranged in the bottom plate.

[0018] In some embodiments of the present disclosure, the tray body includes a bottom plate, side beams, and one or more partition plates, the side beams are arranged around the bottom plate and together with the bottom plate define an accommodating space for unit cells, the partition plates are arranged on the bottom plate and divide the bottom plate into a plurality of areas for arranging unit cells, gas passages are formed inside the partition plates, inside the side beams, and inside the bottom plate, and the three gas passages are interconnected, some air intake holes are arranged in the partition plates, other air intake holes are arranged in at least one of the side beams and the bottom plate, and the exhaust hole is arranged in at least one of the side beams and the bottom plate.

[0019] In some embodiments of the present disclosure, the battery tray further includes at least one of a smoke sensor and a gas sensor, and the at least one of the smoke sensor and the gas sensor is disposed within the gas passage.

[0020] In some embodiments of the present disclosure, the power battery pack further includes a gasket, the gasket is installed between the battery cell and the tray body, the gasket is provided with a through hole, the through hole corresponds to the air intake hole one-to-one, and the through hole is located between the corresponding air intake hole and the battery explosion-proof valve.

[0021] In some embodiments of the present disclosure, the power battery pack further includes a cover plate, which is hermetically connected to the battery tray and together forms a sealed space that accommodates the plurality of cells.

[0022] With the above technical solution, when the air pressure inside a certain cell increases and the explosion-proof valve of the cell above it opens, the flame, smoke, or gas inside the cell will directly enter the gas passage of the tray body through the air intake hole of the tray body without entering the accommodating space of the cell, thereby preventing the flame, smoke, or gas from causing secondary damage to the battery or affecting other batteries.

[0023] A vehicle according to the present disclosure also includes a power battery pack as described above.

[0024] Other features and advantages of the present disclosure are described in detail in the following specific embodiments. [Brief explanation of the drawings]

[0025] The drawings are intended to provide an understanding of the present disclosure and constitute a part of the specification, and together with the following specific embodiments illustrate, but do not limit, the present disclosure.

[0026] [Figure 1] FIG. 1 is a schematic perspective view of a battery tray according to an embodiment of the present disclosure. [Figure 2] FIG. 2 is a plan view of the battery tray of FIG. [Figure 3] 2 is an exploded plan view of the battery module, the gasket, and the partition plate of the battery tray of FIG. 1. FIG. [Figure 4] 2 is an exploded perspective view of a battery module, a gasket, and a partition plate in the battery tray of FIG. 1. FIG. [Figure 5] FIG. 10 is a schematic perspective view of a battery tray according to another embodiment of the present disclosure. [Figure 6] FIG. 6 is a schematic perspective view of the battery tray of FIG. 5, also showing the gasket. [Figure 7]FIG. 6 is a schematic plan view of the battery tray of FIG. 5, also showing the gasket. [Figure 8] FIG. 6 is an assembled perspective view of the battery tray and the unit cells in FIG. 5. [Figure 9] FIG. 6 is an assembled plan view of the battery tray and the unit cells in FIG. 5. [Figure 10] FIG. 10 is a cross-sectional view taken along the line AA in FIG. 9. [Figure 11] FIG. 10 is a schematic perspective view of a battery tray according to another embodiment of the present disclosure. [Figure 12] FIG. 12 is an assembled perspective view of the battery tray and the unit cells in FIG. 11. [Figure 13] FIG. 12 is a schematic plan view of the battery tray and the unit cell in FIG. [Figure 14] FIG. 14 is a cross-sectional view taken along the line BB in FIG. [Figure 15] FIG. 10 is a schematic perspective view of a battery tray according to another embodiment of the present disclosure. [Figure 16] FIG. 16 is a schematic plan view of the battery tray of FIG. [Figure 17] FIG. 17 is a cross-sectional view taken along CC in FIG. [Figure 18] FIG. 10 is a schematic perspective view of a battery tray according to another embodiment of the present disclosure. [Figure 19] FIG. 10 is a schematic perspective view of a battery tray according to another embodiment of the present disclosure, showing no air intake holes. [Figure 20] 1 is a schematic configuration diagram of a vehicle according to the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0027] Specific embodiments of the present disclosure will be described in detail below with reference to the drawings. It should be understood that the specific embodiments described herein are merely for the purpose of illustrating and interpreting the present disclosure, and are not intended to limit the present disclosure.

[0028] As shown in FIGS. 1 to 20 , one embodiment of the present disclosure provides a battery tray 100 and a power battery pack 400 including the battery tray 100. In addition to the battery tray 100, the power battery pack 400 further includes a cover plate (not shown) and a plurality of cells 200. The cover plate is hermetically connected to the battery tray 100 and together with the cover plate form a sealed space for accommodating the plurality of cells 200. Each cell 200 has a cell explosion-proof valve 201 (see FIG. 4 ). The battery tray 100 includes a tray body, at least a portion of which is formed with a gas passage. The tray body is provided with a plurality of air intake holes 31 and at least one exhaust hole communicating with the gas passage. The air intake holes 31 are disposed opposite and correspond one-to-one to the cell explosion-proof valves 201. When the corresponding cell explosion-proof valve 201 is opened, each air intake hole 31 introduces flame, smoke, or gas from inside the cell 200 into the gas passage. The exhaust hole connects the gas passage with the space outside the battery pack, and exhausts flames, smoke, or gases in the gas passage to the outside of the battery pack. When the air pressure inside the battery 200 increases and the battery explosion-proof valve 201 above it opens, the flames, smoke, or gases inside the battery 200 are exhausted from the battery 200 by the battery explosion-proof valve 201, then rush into the intake hole 31, and further enter the gas passage.

[0029] With the above technical solution, when the air pressure inside a certain battery 200 increases and the battery explosion-proof valve 201 above it opens, the flame, smoke, or gas inside the battery 200 will not enter the battery 200 accommodating space inside the tray, but will directly enter the gas passage of the tray body through the air intake hole 31 in the tray body, thereby preventing the flame, smoke, or gas from causing secondary damage to the battery or affecting other batteries.

[0030] To prevent flames, smoke, or gases emitted from the cell explosion-proof valve 201 from leaking into the battery accommodating space, according to some embodiments of the present disclosure, as shown in Figures 3-4, 6-7, and 14, the power battery pack 400 further includes a gasket 300. The gasket 300 is disposed between the cell 200 and the tray body and has flame retardant properties and a certain compressibility. The gasket 300 has a plurality of through-holes 301, which correspond one-to-one to the air intake holes 31 of the tray body, and each through-hole 301 is located between the corresponding air intake hole 31 and the cell explosion-proof valve 201. When the cell 200 and the tray body are pressed together, the gasket 300 forms a seal around the air intake holes 31, preventing flames, smoke, or gases from leaking into the battery accommodating space.

[0031] To prevent external dust and water from entering the battery storage space through the exhaust hole and gas passage, in some embodiments of the present disclosure, the battery tray 100 further includes a battery pack explosion-proof valve 40, as shown in FIGS. 1-2 , 5-9 , 11-13 , 17 , 18 , and 19 . The battery pack explosion-proof valve 40 is attached to the exhaust hole and closes the exhaust hole. Flame, smoke, or gas discharged from the cell explosion-proof valve 201 enters the gas passage through the intake hole 31 and accumulates therein. When the air pressure in the gas passage reaches a certain value, the battery pack explosion-proof valve 40 opens to discharge the accumulated flame, smoke, or gas. Both the battery pack explosion-proof valve 40 and the cell explosion-proof valve 201 are well known to those skilled in the art, and their structures and operating principles will not be described here.

[0032] In the present disclosure, the battery tray 100 may have any suitable structure, and the present disclosure is not limited thereto. Several examples of the battery tray 100 are specifically described below. It should be understood that these examples are merely for the purpose of explaining and interpreting the present disclosure, and are not intended to limit the present disclosure.

[0033] In the first embodiment, as shown in Figures 1 to 4, the tray body includes a bottom plate 10, side beams 20, and one or more partition plates 30, the side beams 20 are installed around the bottom plate 10, and together with the bottom plate 10, define a battery storage space, the partition plates 30 are installed on the bottom plate 10, and the partition plates 30 divide the bottom plate 10 into multiple areas for arranging the single cells 200, gas passages are formed inside both the partition plates 30 and the side beams 20, and the gas passages of the two are connected to each other, the intake holes 31 are installed in the partition plates 30, and the exhaust holes are installed in the side beams 20. In such an embodiment, the flame, smoke, or gas discharged from the single cell explosion-proof valve 201 passes through the air intake 31 of the partition plate 30 and enters the gas passage inside the partition plate 30, and then diffuses from the gas passage inside the partition plate 30 to the gas passage inside the side beam 20.When the air pressure inside the gas passage reaches a certain value, the battery pack explosion-proof valve 40 of the side beam 20 opens, and the flame, smoke, or gas accumulated in the gas passage is discharged outside the battery pack by the battery pack explosion-proof valve 40.

[0034] In the first embodiment, as shown in Figures 3 and 4, a plurality of single cells 200 constitute a battery module, a gasket 300 is installed between the battery module and a partition plate 30, and a plurality of through holes 301 are installed in each gasket 300, and the through holes 301 correspond one-to-one to the air intake holes 31 of the partition plate 30, and each through hole 301 is located between the corresponding air intake hole 31 and the single cell explosion-proof valve 201.

[0035] In the second embodiment, as shown in Figures 15 to 17, the tray body includes a bottom plate 10, side beams 20, and one or more partition plates 30, the side beams 20 are installed around the bottom plate 10 and together with the bottom plate 10 define the battery storage space, the partition plates 30 are installed on the bottom plate 10, and the partition plates 30 divide the bottom plate 10 into multiple areas for arranging the single cells 200, gas passages are formed both inside the partition plates 30 and inside the bottom plate 10, and the two gas passages are connected to each other, the air intake hole 31 is installed in the partition plate 30, and the air exhaust hole is installed in the bottom plate 10. In such an embodiment, the flame, smoke, or gas discharged from the single cell explosion-proof valve 201 passes through the air intake 31 of the partition plate 30 and enters the gas passage inside the partition plate 30, and then diffuses from the gas passage inside the partition plate 30 to the gas passage inside the bottom plate 10.When the air pressure inside the gas passage reaches a certain value, the battery pack explosion-proof valve 40 of the bottom plate 10 opens, and the flame, smoke, or gas accumulated in the gas passage is discharged outside the battery pack by the battery pack explosion-proof valve 40.

[0036] The top of the battery pack faces the passenger compartment, and in the second embodiment, the exhaust holes are installed in the bottom plate 10, so that the gas in the gas passage is exhausted downward, which is safer.

[0037] In the third embodiment, the tray body includes a bottom plate 10, side beams 20, and one or more partition plates 30. The side beams 20 are arranged around the bottom plate 10 and together with the bottom plate 10 define the battery storage space. The partition plates 30 are arranged on the bottom plate 10 and divide the bottom plate 10 into multiple areas for arranging the single cells 200. Gas passages are formed inside both the partition plates 30 and the side beams 20, and the gas passages of the two are connected to each other. Some of the air intake holes 31 are arranged in the partition plate 30, other air intake holes 31 are arranged in the side beams 20, and exhaust holes are arranged in the side beams 20. In such an embodiment, the flame, smoke, or gas discharged from the cell explosion-proof valve 201 passes through the intake holes 31 of the partition plate 30 and enters the gas passage inside the partition plate 30, or the flame, smoke, or gas discharged from the cell explosion-proof valve 201 passes through the intake holes 31 of the side beam 20 and enters the gas passage inside the side beam 20, or the flame, smoke, or gas discharged from the cell explosion-proof valve 201 passes partially through the intake holes 31 of the partition plate 30 and enters the gas passage inside the partition plate 30, and partially through the intake holes 31 of the side beam 20 and enters the gas passage inside the side beam 20, and when the air pressure in the gas passage reaches a certain value, the battery pack explosion-proof valve 40 of the side beam 20 opens, and the flame, smoke, or gas accumulated in the gas passage is discharged to the outside of the battery pack by the battery pack explosion-proof valve 40.

[0038] In the fourth embodiment, the tray body includes a bottom plate 10, side beams 20, and one or more partition plates 30, the side beams 20 are installed around the bottom plate 10, and together with the bottom plate 10, define the battery storage space, the partition plates 30 are installed on the bottom plate 10, and the partition plates 30 divide the bottom plate 10 into multiple areas for arranging the single cells 200, gas passages are formed inside both the partition plates 30 and the bottom plate 10, and the two gas passages are connected to each other, some of the air intake holes 31 are installed in the partition plate 30, other air intake holes 31 are installed in the bottom plate 10, and the exhaust hole is installed in the bottom plate 10. In this embodiment, the flame, smoke, or gas discharged from the cell explosion-proof valve 201 passes through the intake holes 31 of the partition plate 30 and enters the gas passage inside the partition plate 30, or the flame, smoke, or gas discharged from the cell explosion-proof valve 201 passes through the intake holes 31 of the bottom plate 10 and enters the gas passage inside the bottom plate 10, or the flame, smoke, or gas discharged from the cell explosion-proof valve 201 passes partly through the intake holes 31 of the partition plate 30 and enters the gas passage inside the partition plate 30, and partly through the intake holes 31 of the bottom plate 10 and enters the gas passage inside the bottom plate 10, and when the air pressure in the gas passage reaches a certain value, the battery pack explosion-proof valve 40 of the bottom plate 10 opens, and the flame, smoke, or gas accumulated in the gas passage is discharged to the outside of the battery pack by the battery pack explosion-proof valve 40.

[0039] The top of the battery pack faces the passenger compartment, and in the fourth embodiment, the exhaust holes are installed in the bottom plate 10, so that the gas in the gas passage is discharged downward, which is safer.

[0040] In the fifth embodiment, the tray body includes a bottom plate 10, side beams 20, and one or more partition plates 30. The side beams 20 are arranged around the bottom plate 10 and together with the bottom plate 10 define a battery storage space. The partition plates 30 are arranged on the bottom plate 10 and divide the bottom plate 10 into multiple areas for arranging the single cells 200. Gas passages are formed inside the partition plates 30, inside the side beams 20, and inside the bottom plate 10, and the three gas passages are interconnected. Some of the air intake holes 31 are arranged in the partition plates 30, some of the air intake holes 31 are arranged in the side beams 20, some of the air intake holes 31 are arranged in the bottom plate 10, and exhaust holes are arranged in the side beams 20. In this embodiment, the flame, smoke, or gas discharged from the cell explosion-proof valve 201 enters the gas passage inside the partition plate 30 through the intake holes 31 of the partition plate 30, or enters the gas passage inside the bottom plate 10 through the intake holes 31 of the bottom plate 10, or enters the gas passage inside the side beam 20 through the intake holes 31 of the side beam 20, or enters the corresponding gas passage through any two intake holes 31 of the partition plate 30, the bottom plate 10, and the side beam 20, or enters the corresponding gas passage through the intake holes 31 of the partition plate 30, the bottom plate 10, and the side beam 20, respectively. When the air pressure in the gas passage reaches a certain value, the battery pack explosion-proof valve 40 of the side beam 20 opens, and the flame, smoke, or gas accumulated in the gas passage is discharged to the outside of the battery pack by the battery pack explosion-proof valve 40.

[0041] In the sixth embodiment, the tray body includes a bottom plate 10, side beams 20, and one or more partition plates 30. The side beams 20 are arranged around the bottom plate 10 and together with the bottom plate 10 define a battery storage space. The partition plates 30 are arranged on the bottom plate 10 and divide the bottom plate 10 into multiple areas for arranging the single cells 200. Gas passages are formed inside the partition plates 30, inside the side beams 20, and inside the bottom plate 10, and the three gas passages are interconnected. Some of the air intake holes 31 are arranged on the partition plate 30, some of the air intake holes 31 are arranged on the side beams 20, some of the air intake holes 31 are arranged on the bottom plate 10, and an exhaust hole is arranged on the bottom plate 10. In this embodiment, the flame, smoke, or gas discharged from the cell explosion-proof valve 201 enters the gas passage inside the partition plate 30 through the intake holes 31 in the partition plate 30, or enters the gas passage inside the bottom plate 10 through the intake holes 31 in the bottom plate 10, or enters the gas passage inside the side beam 20 through the intake holes 31 in the side beam 20, or enters the corresponding gas passage through any two intake holes 31 in the partition plate 30, the bottom plate 10, and the side beam 20, or enters the corresponding gas passage through the intake holes 31 in the partition plate 30, the bottom plate 10, and the side beam 20, respectively. When the air pressure in the gas passage reaches a certain value, the battery pack explosion-proof valve 40 in the bottom plate 10 opens, and the flame, smoke, or gas accumulated in the gas passage is discharged outside the battery pack by the battery pack explosion-proof valve 40.

[0042] The top of the battery pack faces the passenger compartment, and in the sixth embodiment, the exhaust holes are installed in the bottom plate 10, so that the gas in the gas passage is discharged downward, which is safer.

[0043] In the seventh embodiment, the tray body includes a bottom plate 10, side beams 20, and one or more partition plates 30. The side beams 20 are arranged around the bottom plate 10 and together with the bottom plate 10 define a battery storage space. The partition plates 30 are arranged on the bottom plate 10 and divide the bottom plate 10 into multiple areas for arranging the single cells 200. Gas passages are formed inside the partition plates 30, inside the side beams 20, and inside the bottom plate 10, and the three gas passages are interconnected. Some of the air intake holes 31 are arranged on the partition plates 30, some of the air intake holes 31 are arranged on the side beams 20, some of the air intake holes 31 are arranged on the bottom plate 10, some of the air exhaust holes are arranged on the side beams 20, and some of the air exhaust holes are arranged on the bottom plate 10. In such an embodiment, the flame, smoke, or gas discharged from the cell explosion-proof valve 201 enters the gas passage inside the partition plate 30 through the intake holes 31 of the partition plate 30, or enters the gas passage inside the bottom plate 10 through the intake holes 31 of the bottom plate 10, or enters the gas passage inside the side beam 20 through the intake holes 31 of the side beam 20, or enters the corresponding gas passage through any two intake holes 31 of the partition plate 30, the bottom plate 10, and the side beam 20. or enters the corresponding gas passage through the intake holes 31 of the partition plate 30, bottom plate 10 and side beam 20, respectively, and when the air pressure in the gas passage reaches a certain value, the battery pack explosion-proof valve 40 of the bottom plate 10 opens, or the battery pack explosion-proof valve 40 of the side beam 20 opens, or the battery pack explosion-proof valves 40 of the bottom plate 10 and side beam 20 both open, and the flames, smoke or gas accumulated in the gas passage is discharged outside the battery pack by the battery pack explosion-proof valve 40.

[0044] In the eighth embodiment, the tray body includes a bottom plate 10, side beams 20, and one or more partition plates 30. The side beams 20 are arranged around the bottom plate 10 and together with the bottom plate 10 define a battery storage space. The partition plates 30 are arranged on the bottom plate 10 and divide the bottom plate 10 into multiple areas for arranging the single cells 200. Gas passages are formed inside the partition plates 30, inside the side beams 20, and inside the bottom plate 10, and the three gas passages are interconnected. An intake hole 31 is arranged on the partition plate 30, some exhaust holes are arranged on the side beams 20, and some exhaust holes are arranged on the bottom plate 10. In such an embodiment, the flame, smoke, or gas discharged from the battery explosion-proof valve 201 enters the gas passage inside the partition plate 30 through the air intake hole 31 of the partition plate 30, and when the air pressure in the gas passage reaches a certain value, the battery pack explosion-proof valve 40 on the bottom plate 10 opens, or the battery pack explosion-proof valve 40 on the side beam 20 opens, or the battery pack explosion-proof valves 40 on both the bottom plate 10 and the side beam 20 open, and the flame, smoke, or gas accumulated in the gas passage is discharged outside the battery pack by the battery pack explosion-proof valve 40.

[0045] In the ninth embodiment, the tray body includes a bottom plate 10, side beams 20, and one or more partition plates 30. The side beams 20 are arranged around the bottom plate 10 and together with the bottom plate 10 define a battery storage space. The partition plates 30 are arranged on the bottom plate 10 and divide the bottom plate 10 into multiple areas for arranging the single cells 200. Gas passages are formed inside the partition plates 30, inside the side beams 20, and inside the bottom plate 10, and the three gas passages are interconnected. Some of the air intake holes 31 are arranged on the partition plate 30, some of the air intake holes 31 are arranged on the side beams 20, some of the exhaust holes are arranged on the side beams 20, and some of the exhaust holes are arranged on the bottom plate 10. In this embodiment, the flame, smoke, or gas discharged from the battery explosion-proof valve 201 passes through the air intake 31 of the partition plate 30 and enters the gas passage inside the partition plate 30, or through the air intake 31 of the side beam 20 and enters the gas passage inside the side beam 20, or partially passes through the air intake 31 of the partition plate 30 and enters the gas passage inside the partition plate 30 and partially passes through the air intake 31 of the side beam 20 and enters the gas passage inside the side beam 20, and when the air pressure in the gas passage reaches a certain value, the battery pack explosion-proof valve 40 of the bottom plate 10 opens, or the battery pack explosion-proof valve 40 of the side beam 20 opens, or both the battery pack explosion-proof valves 40 of the bottom plate 10 and the side beam 20 open, and the flame, smoke, or gas accumulated in the gas passage is discharged to the outside of the battery pack by the battery pack explosion-proof valve 40.

[0046] In the tenth embodiment, the tray body includes a bottom plate 10, side beams 20, and one or more partition plates 30. The side beams 20 are arranged around the bottom plate 10 and together with the bottom plate 10 define a battery storage space. The partition plates 30 are arranged on the bottom plate 10 and divide the bottom plate 10 into multiple areas for arranging the single cells 200. Gas passages are formed inside the partition plates 30, inside the side beams 20, and inside the bottom plate 10, and the three gas passages are interconnected. Some of the air intake holes 31 are arranged on the partition plate 30, some of the air intake holes 31 are arranged on the bottom plate 10, some of the exhaust holes are arranged on the side beams 20, and some of the exhaust holes are arranged on the bottom plate 10. In this embodiment, the flame, smoke, or gas discharged from the battery explosion-proof valve 201 passes through the air intake 31 of the partition plate 30 and enters the gas passage inside the partition plate 30, or passes through the air intake 31 of the bottom plate 10 and enters the gas passage inside the bottom plate 10, or part of the flame, smoke, or gas passes through the air intake 31 of the partition plate 30 and enters the gas passage inside the partition plate 30, and part of the flame, smoke, or gas passes through the air intake 31 of the bottom plate 10 and enters the gas passage inside the bottom plate 10. When the air pressure in the gas passage reaches a certain value, the battery pack explosion-proof valve 40 of the bottom plate 10 opens, or the battery pack explosion-proof valve 40 of the side beam 20 opens, or both the battery pack explosion-proof valves 40 of the bottom plate 10 and the side beam 20 open, and the flame, smoke, or gas accumulated in the gas passage is discharged to the outside of the battery pack by the battery pack explosion-proof valve 40.

[0047] In an eleventh embodiment, the tray body includes a bottom plate 10, side beams 20, and one or more partition plates 30. The side beams 20 are arranged around the bottom plate 10 and together with the bottom plate 10 define a battery storage space. The partition plates 30 are arranged on the bottom plate 10 and divide the bottom plate 10 into a plurality of areas for arranging the single cells 200. Gas passages are formed in the interiors of the partition plates 30, the interiors of the side beams 20, and the interiors of the bottom plate 10. The gas passages in the interiors of the partition plates 30 are connected to the gas passages in the interiors of the side beams 20, the gas passages in the interiors of the side beams 20 are connected to the gas passages in the interiors of the bottom plate 10, and the gas passages in the interiors of the partition plates 30 are connected to the gas passages in the interiors of the bottom plate 10 via the gas passages in the interiors of the side beams 20. The intake holes 31 are arranged in the partition plates 30, and the exhaust holes are arranged in the bottom plate 10. In this embodiment, the flame, smoke, or gas discharged from the cell explosion-proof valve 201 enters the gas passage inside the partition plate 30 through the air intake 31 of the partition plate 30, then diffuses from the gas passage inside the partition plate 30 to the gas passage inside the side beam 20, and further diffuses from the gas passage inside the side beam 20 to the gas passage inside the bottom plate 10.When the air pressure in the gas passage reaches a certain value, the battery pack explosion-proof valve 40 on the bottom plate 10 opens, and the flame, smoke, or gas accumulated in the gas passage is discharged outside the battery pack by the battery pack explosion-proof valve 40.

[0048] In the twelfth embodiment, the tray body includes a bottom plate 10, side beams 20, and one or more partition plates 30. The side beams 20 are arranged around the bottom plate 10 and together with the bottom plate 10 define a battery storage space. The partition plates 30 are arranged on the bottom plate 10 and divide the bottom plate 10 into a plurality of areas for arranging the single cells 200. Gas passages are formed in the interiors of the partition plates 30, the interiors of the side beams 20, and the interiors of the bottom plate 10. The gas passages in the interiors of the partition plates 30 are connected to the gas passages in the interiors of the bottom plate 10, the gas passages in the interiors of the bottom plate 10 are connected to the gas passages in the interiors of the side beams 20, and the gas passages in the interiors of the partition plates 30 are connected to the gas passages in the interiors of the side beams 20 via the gas passages in the interiors of the bottom plate 10. The intake holes 31 are arranged in the partition plates 30, and the exhaust holes are arranged in the side beams 20. In this embodiment, the flame, smoke, or gas discharged from the cell explosion-proof valve 201 enters the gas passage inside the partition plate 30 through the air intake hole 31 of the partition plate 30, then diffuses from the gas passage inside the partition plate 30 to the gas passage inside the bottom plate 10, and further diffuses from the gas passage inside the bottom plate 10 to the gas passage inside the side beam 20.When the air pressure in the gas passage reaches a certain value, the battery pack explosion-proof valve 40 of the side beam 20 opens, and the flame, smoke, or gas accumulated in the gas passage is discharged outside the battery pack by the battery pack explosion-proof valve 40.

[0049] 11 to 14 , the tray body includes a bottom plate 10 and side beams 20. The side beams 20 are disposed around the bottom plate 10 and together with the bottom plate 10 define a battery storage space. A gas passage is formed inside the side beams 20, and both the intake holes 31 and the exhaust holes are disposed in the side beams 20. In this embodiment, the gas passage is formed inside the side beams 20, and flame, smoke, or gas discharged from the cell explosion-proof valve 201 enters the gas passage inside the side beams 20 through the intake holes 31 of the side beams 20. When the air pressure in the gas passage reaches a certain value, the battery pack explosion-proof valve 40 in the side beams 20 opens, and the flame, smoke, or gas accumulated in the gas passage is discharged to the outside of the battery pack by the battery pack explosion-proof valve 40.

[0050] In the thirteenth embodiment, as shown in FIG. 14, a plurality of single cells 200 constitute a battery module, a gasket 300 is installed between the battery module and the side beam 20, and a plurality of through holes 301 are installed in each gasket 300, and the through holes 301 correspond one-to-one to the air intake holes 31 of the side beam 20, and each through hole 301 is located between the corresponding air intake hole 31 and the single cell explosion-proof valve 201.

[0051] When a cell 200 experiences thermal runaway, it will typically produce tens or even hundreds of liters of smoke or gas in a very short period of time. 13th In this embodiment, both the intake hole 31 and the exhaust hole are located on the side beam 20, which shortens the exhaust path and allows smoke or gas to be discharged more quickly, thereby improving the safety of the battery pack.

[0052] 5 to 10 , the tray body includes a bottom plate 10 and side beams 20. The side beams 20 are disposed around the bottom plate 10 and together with the bottom plate 10 define a battery storage space. A gas passage is formed inside the bottom plate 10, and both the intake holes 31 and the exhaust holes are disposed in the bottom plate 10. In this embodiment, the gas passage is formed inside the bottom plate 10, and flame, smoke, or gas discharged from the cell explosion-proof valve 201 enters the gas passage inside the bottom plate 10 through the intake holes 31 in the bottom plate 10. When the air pressure in the gas passage reaches a certain value, the battery pack explosion-proof valve 40 in the bottom plate 10 opens, and the flame, smoke, or gas accumulated in the gas passage is discharged to the outside of the battery pack by the battery pack explosion-proof valve 40.

[0053] In the fourteenth embodiment, as shown in Figures 6 and 7, a plurality of single cells 200 form a battery module, a gasket 300 is installed between the battery module and the side beam 20, and a plurality of through holes 301 are installed in each gasket 300, and the through holes 301 correspond one-to-one to the air intake holes 31 of the bottom plate 10, and each through hole 301 is located between the corresponding air intake hole 31 and the single cell explosion-proof valve 201.

[0054] When a cell 200 experiences thermal runaway, it typically generates tens of liters or even hundreds of liters of smoke or gas in a very short period of time. In the fourteenth embodiment, the intake hole 31 and the exhaust hole are both located on the bottom plate 10, shortening the exhaust path and allowing the smoke or gas to be discharged more quickly, improving the safety of the battery pack.

[0055] The top of the battery pack faces the passenger compartment, and in the fourteenth embodiment, the exhaust holes are installed in the bottom plate 10, so that the gas in the gas passage is discharged downward, which is safer.

[0056] 18 , the tray body includes a bottom plate 10 and side beams 20. The side beams 20 are disposed around the bottom plate 10 and together with the bottom plate 10 define a battery storage space. Gas passages are formed inside both the side beams 20 and the bottom plate 10, and these gas passages are interconnected. Air intake holes 31 are disposed in the bottom plate 10, and air exhaust holes are disposed in the side beams 20. In this embodiment, flame, smoke, or gas discharged from the cell explosion-proof valve 201 enters the gas passage inside the bottom plate 10 through the air intake holes 31 in the bottom plate 10, and then diffuses from the gas passage inside the bottom plate 10 to the gas passage inside the side beams 20. When the air pressure in the gas passage reaches a certain value, the battery pack explosion-proof valve 40 in the side beams 20 opens, and the flame, smoke, or gas accumulated in the gas passage is discharged to the outside of the battery pack by the battery pack explosion-proof valve 40.

[0057] In a sixteenth embodiment, the tray body includes a bottom plate 10 and side beams 20. The side beams 20 are disposed around the bottom plate 10 and together with the bottom plate 10 define a battery storage space. Gas passages are formed inside both the side beams 20 and the bottom plate 10, and the two gas passages are connected to each other. The air intake holes 31 are disposed in the side beams 20, and the air exhaust holes are disposed in the bottom plate 10. In this embodiment, flame, smoke, or gas discharged from the cell explosion-proof valve 201 enters the gas passage inside the side beams 20 through the air intake holes 31 of the side beams 20, and then diffuses from the gas passage inside the side beams 20 to the gas passage inside the bottom plate 10. When the air pressure in the gas passage reaches a certain value, the battery pack explosion-proof valve 40 in the bottom plate 10 opens, and the flame, smoke, or gas accumulated in the gas passage is discharged to the outside of the battery pack by the battery pack explosion-proof valve 40.

[0058] In the present disclosure, the battery tray 100 is rectangular and may include a rectangular bottom plate 10 and side beams 20 disposed around the periphery of the bottom plate 10. The side beams 20 may be manufactured integrally with the bottom plate 10 or may be a separate structure, for example, attached to the periphery of the bottom plate by welding or other processes. The side beams 20 may be a single structure, formed by welding four side beams 20 together, or may be connected by other processes. The partition plate 30 may be manufactured integrally with the bottom plate 10 or may be a separate structure, for example, connected to the bottom plate 10 by welding or other processes.

[0059] In the first to twelfth embodiments, a partition plate 30 is installed inside the battery tray 100, and the partition plate 30 is intended to reinforce the battery tray 100, and at least some of the air intake holes 31 are installed in the partition plate 30. In the thirteenth to sixteenth embodiments, there is no particular limitation on whether a partition plate is installed inside the battery tray, and the partition plate 30 does not have to be installed inside the battery tray, and the air intake holes 31 may be installed directly on the side beams 20, directly on the bottom plate 10, or directly on both the side beams 20 and the bottom plate 10.

[0060] In the first to twelfth embodiments, the partition plates 30 may be arranged in any suitable manner within the battery tray, and the present disclosure is not limited thereto. In some embodiments of the present disclosure, as shown in FIGS. 1 and 2 , the partition plates 30 may be installed parallel to and spaced apart from each other, perpendicular to the bottom plate 10, and both ends of the partition plates 30 may be connected to the side beams 20. In some embodiments of the present disclosure, as shown in FIG. 19 , the partition plates 30 may include one or more vertical partition plates 31 extending along the length of the tray body and one or more horizontal partition plates 32 extending along the width of the tray body, the vertical partition plates 31 and the horizontal partition plates 32 being arranged crosswise, with both ends of the vertical partition plates 31 connected to the side beams 20 and both ends of the horizontal partition plates 32 connected to the side beams 20.

[0061] In the present disclosure, the gas passage formed inside the tray body receives and stores the flame, smoke or gas emitted from the cells 200, and the smoke and gas emitted from all the cells 200 can enter the gas passage through the corresponding air intake holes 31, and the battery pack explosion-proof valve 40 controls the exhaust of the gas passage.

[0062] The present disclosure does not limit the number of gas passages, and one cell 200 may correspond to one gas passage, or multiple cells 200 may share one gas passage.

[0063] In the first embodiment described above, only one gas passage may be formed inside the side beam 20, and this gas passage may be connected to each of the gas passages inside each partition plate 30, or multiple gas passages independent of each other may be formed inside the side beam 20, and the gas passages inside each partition plate 30 may be connected only to the corresponding gas passages inside the side beam 20.

[0064] In the second embodiment described above, only one gas passage may be formed inside the bottom plate 10, and this gas passage may be connected to each of the gas passages inside each partition plate 30, or multiple gas passages independent of each other may be formed inside the bottom plate 10, and the gas passages inside each partition plate 30 may be connected only to the corresponding gas passages inside the bottom plate 10.

[0065] In the above thirteenth embodiment, only one gas passage may be formed inside the side beam 20, and all of the cells 200 may share this gas passage, i.e., all of the air intake holes 31 and exhaust holes may be connected to this gas passage; multiple gas passages independent of one another may be formed inside the side beam 20, and each gas passage corresponds to multiple cells 200, i.e., each gas passage has multiple air intake holes 31 and at least one exhaust hole; or multiple gas passages independent of one another may be formed inside the side beam 20, and each gas passage corresponds to one cell 200, i.e., each gas passage has one air intake hole 31 and one exhaust hole.

[0066] In the above-mentioned fourteenth embodiment, only one gas passage may be formed inside the bottom plate 10, and all of the cells 200 may share this gas passage, i.e., all of the air intake holes 31 and exhaust holes may be connected to this gas passage; multiple gas passages independent of one another may be formed inside the bottom plate 10, and each gas passage corresponds to multiple cells 200, i.e., each gas passage has multiple air intake holes 31 and at least one exhaust hole; or multiple gas passages independent of one another may be formed inside the bottom plate 10, and each gas passage corresponds to one cell 200, i.e., each gas passage has one air intake hole 31 and one exhaust hole.

[0067] In some embodiments of the present disclosure, each gas passage corresponds to a plurality of cells 200, i.e., a single gas passage can be shared by a plurality of cells 200. In this way, the number of exhaust holes and battery pack explosion-proof valves 40 can be reduced, and by making the number of exhaust holes and battery pack explosion-proof valves 40 smaller than the number of intake holes 31, the difficulty of processing the tray body can be reduced, the number of required battery pack explosion-proof valves 40 can be reduced, and manufacturing costs can be reduced. According to some embodiments of the present disclosure, the number of battery pack explosion-proof valves 40 can be one, two, three or more, and the present disclosure is not limited thereto.

[0068] In the first and second embodiments, as shown in Figures 3 and 4, the number of gaskets 300 is equal to the number of partition plates 30 and corresponds one-to-one to the partition plates 30, and each gasket 300 may be installed between the corresponding partition plate 30 and the cell 200. The gaskets 300 may be integrally molded or installed separately. In one embodiment, the gaskets are installed separately to facilitate use in combination with battery modules having different numbers of cell 200. In the present application, the material of the gasket is not particularly limited, and specifically, it may be one or a combination of polyurethane foam material, silica gel foam, and flame-retardant polypropylene foam material.

[0069] In the present disclosure, as shown in Fig. 2, a plurality of first mounting holes 21 are provided in the upper edge of the side beam 20, and bolts are passed through the first mounting holes 21 and connected to the cover plate, thereby realizing connection between the side beam 20 and the cover plate. In the first to fifth embodiments described above, as shown in Fig. 2, the upper edge of the partition plate 30 may be flush with the upper edge of the side beam 20, and second mounting holes 32 are provided in the upper edge of the partition plate 30, and bolts are passed through the second mounting holes 32 and connected to the cover plate, thereby realizing connection between the partition plate 30 and the cover plate.

[0070] In the present disclosure, as shown in FIG. 2 , one or more mounting blocks 50 are installed on the outside of the side beam 20, one or more third mounting holes 51 are installed in the mounting blocks 50, and bolts are passed through the third mounting holes 51 and connected to the bottom of the vehicle 500, thereby fixing the battery tray 100 to the bottom of the vehicle 500.

[0071] In the prior art, a smoke sensor or gas sensor is installed in a battery tray, and when a battery 200 that is relatively far from the location of the smoke sensor or gas sensor experiences thermal runaway and opens an explosion-proof valve, releasing gas or smoke, the released gas or smoke is diffused and diluted inside the battery tray due to the large volume of the tray, and the smoke sensor or gas sensor may not be able to detect the released gas or smoke in a timely manner, resulting in reduced sensitivity. In the present disclosure, a smoke sensor or gas sensor (not shown) can be installed in the gas passage of the battery tray 100, and the space of the gas passage is significantly smaller than the volume of the battery tray, and the gas passage releases the corresponding smoke or gas in a predetermined direction, thereby preventing the battery from exploding. When 201 opens, the smoke sensor or gas sensor will detect the corresponding smoke or gas, and the smoke sensor or gas sensor will feed back a signal to the vehicle control system to warn the driver to take action, or activate an operation such as gas fire extinguishing or flame retardant for the battery pack, thereby improving the safety of the battery pack. The present disclosure does not particularly limit the installation positions of the smoke and gas sensors within the gas passage, or the number of smoke and gas sensors installed. In one embodiment, the smoke sensor is installed adjacent to the position of the exhaust vent, or the gas sensor is installed adjacent to the position of the exhaust vent, or both the smoke sensor and the gas sensor are installed adjacent to the position of the exhaust vent, which can more sensitively detect the corresponding gas or smoke.

[0072] A vehicle 500 according to another embodiment of the present disclosure includes the power battery pack 400 described above.

[0073] Although the embodiments of the present disclosure have been described in detail above with reference to the drawings, the present disclosure is not limited to the specific content of the above embodiments, and multiple simple modifications can be made to the technical solutions of the present disclosure within the scope of the technical idea of ​​the present disclosure, and all of these simple modifications fall within the protection scope of the present disclosure.

[0074] Furthermore, the specific technical features described in the above specific embodiments can be combined in any suitable manner unless they are contradictory, and in order to avoid unnecessary duplication, this disclosure does not separately describe every possible combination.

[0075] Furthermore, the various embodiments of the present disclosure can be combined in any manner, and should be considered to be the same as the contents disclosed in the present disclosure, unless they deviate from the spirit of the present disclosure. [Explanation of symbols]

[0076] 100 Battery tray 10 Bottom plate 20 Side beam 21 First mounting hole 30 Partition plate 31 Air intake hole 32 Second mounting hole 40 Battery pack explosion prevention valve 50 Mounting block 51 Third mounting hole 200 Single cell 201 Single cell explosion-proof valve 300 Gasket 301 Through hole 400 Power Battery Pack 500 Vehicle

Claims

1. A power battery pack including a battery tray (100) and a plurality of cells (200) installed in the battery tray (100), Each cell (200) has a cell explosion-proof valve (201), The battery tray (100) includes a tray body, A gas passage is formed inside at least a part of the tray body, and a plurality of intake holes (31) and at least one exhaust hole are installed in the tray body, At least one of the intake holes (31) is arranged facing the single cell explosion-proof valves (201) in a one-to-one correspondence, and the flame, smoke or gas discharged from each single cell explosion-proof valve (201) enters the gas passage through the corresponding intake hole (31), and the exhaust hole discharges the flame, smoke or gas in the gas passage; The tray body includes a bottom plate (10) and a side beam (20); The side beams (20) are installed around the bottom plate (10) and together with the bottom plate (10) define a space for accommodating the cells (200); The tray body further includes a partition plate (30), which is installed on the bottom plate (10) and divides the bottom plate (10) into a plurality of regions for arranging the single cells (200), and both ends of the partition plate (30) are connected to the side beams (20); The air intake hole (31) is provided in the partition plate (30), A gas passage is formed inside the partition plate (30) and inside the bottom plate (10) and / or the side beam (20), and the gas passages of both plates communicate with each other; The exhaust hole is installed in the bottom plate (10) and / or the side beam (20) in which the gas passage is formed. Power battery pack.

2. The battery tray (100) further includes a battery pack explosion-proof valve (40), and the exhaust hole is closed by the battery pack explosion-proof valve (40).

10. The power battery pack of claim 1.

3. A power battery pack as described in claim 1 or 2, characterized in that a gas passage is formed inside the side beam (20), and the intake hole (31) and at least one of the exhaust holes are both installed in the side beam (20).

4. A gas passage is formed inside both the side beam (20) and the bottom plate (10), and the two gas passages are connected to each other, the intake hole (31) is installed in the side beam (20), and at least one of the exhaust holes is installed in the bottom plate (10), 3. The power battery pack according to claim 1 or 2.

5. A gas passage is formed inside the bottom plate (10), and the intake hole (31) and at least one exhaust hole are both installed in the bottom plate (10).

3. The power battery pack according to claim 1 or 2.

6. A gas passage is formed inside both the side beam (20) and the bottom plate (10), and the two gas passages are connected to each other, the intake hole (31) is installed in the bottom plate (10), and at least one exhaust hole is installed in the side beam (20).

3. The power battery pack according to claim 1 or 2.

7. A gas passage is formed inside both the partition plate (30) and the side beam (20), and the two gas passages are connected to each other, the intake hole (31) is installed in the partition plate (30), and at least one of the exhaust holes is installed in the side beam (20), 3. The power battery pack according to claim 1 or 2.

8. A gas passage is formed inside both the partition plate (30) and the bottom plate (10), and the two gas passages are connected to each other, the intake hole (31) is installed in the partition plate (30), and at least one of the exhaust holes is installed in the bottom plate (10).

3. The power battery pack according to claim 1 or 2.

9. A power battery pack as described in claim 1 or 2, wherein gas passages are formed inside the partition plate (30), the side beam (20) and the bottom plate (10), the gas passage inside the partition plate (30) is connected to the gas passage inside the side beam (20), the gas passage inside the side beam (20) is connected to the gas passage inside the bottom plate (10), the intake hole (31) is installed in the partition plate (30), and at least one exhaust hole is installed in the bottom plate (10).

10. Gas passages are formed inside the partition plate (30), the side beam (20) and the bottom plate (10), the gas passage inside the partition plate (30) communicates with the gas passage inside the bottom plate (10), the gas passage inside the bottom plate (10) communicates with the gas passage inside the side beam (20), the intake hole (31) is installed in the partition plate (30), and at least one of the exhaust holes is installed in the side beam (20).

3. The power battery pack according to claim 1 or 2.

11. A gas passage is formed inside both the partition plate (30) and the side beam (20), and the two gas passages are connected to each other, some of the intake holes (31) are installed in the partition plate (30), other intake holes (31) are installed in the side beam (20), and at least one of the exhaust holes is installed in the side beam (20).

3. The power battery pack according to claim 1 or 2.

12. A gas passage is formed inside both the partition plate (30) and the bottom plate (10), and the two gas passages are connected to each other, some of the intake holes (31) are installed in the partition plate (30), other intake holes (31) are installed in the bottom plate (10), and at least one of the exhaust holes is installed in the bottom plate (10).

3. The power battery pack according to claim 1 or 2.

13. Gas passages are formed inside the partition plate (30), the side beam (20) and the bottom plate (10), and the three gas passages are interconnected, some of the intake holes (31) are installed in the partition plate (30), other intake holes (31) are installed in at least one of the side beam (20) and the bottom plate (10), and at least one of the exhaust holes is installed in at least one of the side beam (20) and the bottom plate (10).

3. The power battery pack according to claim 1 or 2.

14. The battery tray (100) further includes at least one of a smoke sensor and a gas sensor, the at least one of the smoke sensor and the gas sensor being installed in the gas passage.

3. The power battery pack according to claim 1 or 2.

15. The tray further includes a gasket (300), which is disposed between the battery cell (200) and the tray body, and has through holes (301) in one-to-one correspondence with the air intake holes (31), and the through holes (301) are located between the corresponding air intake holes (31) and the battery explosion-proof valves (201).

3. The power battery pack according to claim 1 or 2.

16. The battery tray further includes a cover plate, the cover plate being hermetically connected to the battery tray (100) and forming an enclosed space for accommodating the plurality of electric cells (200).

3. The power battery pack according to claim 1 or 2.

17. A vehicle comprising the power battery pack according to claim 1 or 2.

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