CN111668406B

CN111668406B - Battery tray, power battery package and vehicle

Info

Publication number: CN111668406B
Application number: CN201910175981.6A
Authority: CN
Inventors: 陈婧; 鲁志佩
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2019-03-08
Filing date: 2019-03-08
Publication date: 2021-12-07
Anticipated expiration: 2039-03-08
Also published as: CN111668406A

Abstract

The utility model relates to a battery tray, power battery package and vehicle, battery tray are equipped with and are used for holding the single hold cabin of battery, and every battery monomer has monomer explosion-proof valve, and battery tray includes the tray main part, and the inside of tray main part is formed with the gas passage, is equipped with inlet port and exhaust hole in the tray main part, makes the flame, smog or the gas that discharge from every monomer explosion-proof valve get into the gas passage via corresponding inlet port; a containing bag is arranged in the gas channel, and a phase change material is arranged in the containing bag. Through above-mentioned technical scheme, in case the inside atmospheric pressure of a certain battery monomer increases, when causing the monomer explosion vent above that to open, the inside flame of battery monomer, smog or gaseous will directly get into the gas passage of tray main part through the inlet port in the tray main part in for this flame, smog or gaseous can not get into battery accommodation space, thereby avoid this flame, smog or gaseous to cause secondary damage or influence other batteries to the battery.

Description

Battery tray, power battery package and vehicle

Technical Field

The disclosure relates to the field of electric automobiles, in particular to a battery tray, a power battery pack and a vehicle.

Background

The power battery pack is used as an energy storage device and is a core component of hybrid electric vehicles and electric vehicles. The power battery pack mainly comprises a plurality of battery monomers, a battery tray and a cover plate. The battery tray is installed in the car bottom, and apron and battery tray sealing connection form jointly and hold the free airtight space of a plurality of batteries. In order to prevent explosion accidents, the battery cell is usually provided with an explosion-proof valve structure. In the use process of the battery, if the internal air pressure is increased to a certain degree, the explosion-proof valve is opened, and flame, smoke or gas in the battery monomer is exhausted through the explosion-proof valve. In the prior art, after the explosion-proof valve on the single battery is opened, discharged flame, smoke or gas can be accumulated inside the battery pack and cannot be discharged in time, and secondary damage or other batteries are easily caused to the battery.

Disclosure of Invention

The purpose of this disclosure is to provide a power battery package, this power battery tray can effectively prevent that the flame, smog or the gas that the battery monomer discharged from gathering in power battery package inside.

The present disclosure further provides a power battery pack.

The present disclosure further proposes a vehicle.

According to the battery tray disclosed by the invention, the battery tray is provided with a containing cabin for containing battery monomers, each battery monomer is provided with a monomer explosion-proof valve, the battery tray comprises a tray main body, a gas channel is formed in at least one part of the tray main body, the tray main body is provided with a plurality of gas inlets and at least one exhaust hole, the gas inlets and the monomer explosion-proof valves are oppositely arranged and are in one-to-one correspondence, so that flame, smoke or gas exhausted from each monomer explosion-proof valve enters the gas channel through the corresponding gas inlet, and the exhaust hole is used for exhausting the flame, smoke or gas in the gas channel; a containing bag is arranged in the gas channel, and a phase change material is arranged in the containing bag.

According to this disclosed battery tray, through above-mentioned technical scheme, in case the inside atmospheric pressure of a certain battery monomer increases, when causing the monomer explosion vent above that to open, the inside flame of battery monomer, smog or gaseous will directly get into the gas passage of tray main part through the inlet port in the tray main part for this flame, smog or gaseous can not get into battery accommodation space, thereby avoid this flame, smog or gaseous to cause secondary damage or influence other batteries to the battery.

In some examples of the present disclosure, an adhesive layer is disposed between the pouch and an inner wall of the gas channel.

In some examples of the present disclosure, the adhesive layer is a double-sided adhesive tape.

In some examples of the disclosure, the receptacle is a sealed pouch adapted to receive a liquid phase change material.

In some examples of the present disclosure, an insulating layer is disposed within the pouch.

In some examples of the present disclosure, the receiving bag is an aerogel bag or a ceramic fiber bag.

In some examples of the present disclosure, at least a portion of the tray body is a hollow structure, the hollow structure serving as the gas passage.

In some examples of the present disclosure, the battery tray further includes a battery pack explosion-proof valve through which the vent hole is blocked.

In some examples of the present disclosure, the battery tray further includes a one-way stopper plate disposed at the air inlet hole, the one-way stopper plate being adapted to rotate between a first position and a second position, the one-way stopper plate blocking the air inlet hole when the one-way stopper plate is in the first position; when the one-way stop plate is located at the second position, the one-way stop plate is located in the gas channel, the gas inlet hole is opened by the one-way stop plate, and fluid discharged by the single explosion-proof valve enters the gas channel through the gas inlet hole.

In some examples of the disclosure, the tray main body includes a bottom plate and a boundary beam, the boundary beam is disposed around the bottom plate and defines a single battery accommodating space together with the bottom plate, a gas passage is formed inside the boundary beam, and the gas inlet and the gas outlet are disposed on the boundary beam.

In some examples of this disclosure, the tray main part includes bottom plate and boundary beam, the boundary beam sets up the bottom plate all around and with the free accommodation space of battery is injectd jointly to the bottom plate, inside the boundary beam with the bottom plate is inside all to be formed with gas channel and to link up each other, the inlet port sets up on the boundary beam, the exhaust hole sets up on the bottom plate.

In some examples of the disclosure, the tray main body includes a bottom plate and a boundary beam, the boundary beam is disposed around the bottom plate and defines a single battery accommodating space together with the bottom plate, a gas passage is formed inside the bottom plate, and the gas inlet hole and the gas outlet hole are both disposed on the bottom plate.

In some examples of this disclosure, the tray main part includes bottom plate and boundary beam, the boundary beam sets up the bottom plate all around and with the free accommodation space of battery is injectd jointly to the bottom plate, inside the boundary beam with the bottom plate is inside all to be formed with gas channel and to link up each other, the inlet port sets up on the bottom plate, the exhaust hole sets up on the boundary beam.

In some examples, the tray main body includes bottom plate, boundary beam and a plurality of crossbeam, the boundary beam set up bottom plate around and with the bottom plate prescribes a limit to the free accommodation space of battery jointly, the crossbeam sets up on the bottom plate and will the bottom plate is separated into a plurality of and is used for placing the free region of battery, the crossbeam inside with the boundary beam inside all is formed with gas channel and link up each other, the inlet port sets up on the crossbeam, the exhaust hole sets up on the boundary beam.

In some examples, the tray main body includes a bottom plate, a boundary beam and a plurality of crossbeams, the boundary beam is arranged around the bottom plate and defines the single accommodation space of battery together with the bottom plate, the crossbeams are arranged on the bottom plate and divide the bottom plate into a plurality of regions for placing the single battery, gas channels are formed inside the crossbeams and inside the bottom plate and are communicated with each other, the gas inlet holes are arranged on the crossbeams, and the exhaust holes are arranged on the bottom plate.

In some examples of this disclosure, the tray main part includes bottom plate, boundary beam and a plurality of crossbeam, the boundary beam sets up around the bottom plate and with the free accommodation space of battery is injectd jointly to the bottom plate, the crossbeam sets up on the bottom plate and will a plurality of is used for placing the free region of battery is separated into to the bottom plate, inside the crossbeam the boundary beam inside with the inside gas passage that all is formed with of bottom plate, just the inside gas passage of crossbeam with the inside gas passage of boundary beam link up, the inside gas passage of boundary beam with the inside gas passage of bottom plate link up, the inlet port sets up on the crossbeam, the exhaust hole sets up on the bottom plate.

In some examples of this disclosure, the tray main part includes bottom plate, boundary beam and a plurality of crossbeam, the boundary beam sets up around the bottom plate and with the free accommodation space of battery is injectd jointly to the bottom plate, the crossbeam sets up on the bottom plate and will a plurality of is used for placing the free region of battery is separated into to the bottom plate, inside the crossbeam the boundary beam inside with the inside gas passage that all is formed with of bottom plate, just the inside gas passage of crossbeam with the inside gas passage of bottom plate link up, the inside gas passage of bottom plate with the inside gas passage of boundary beam link up, the inlet port sets up on the crossbeam, the exhaust hole sets up on the boundary beam.

In some examples of this disclosure, the tray main part includes bottom plate, boundary beam and a plurality of crossbeam, the boundary beam sets up around the bottom plate and with the free accommodation space of battery is injectd jointly to the bottom plate, the crossbeam sets up on the bottom plate and will the bottom plate is separated into a plurality of and is used for placing the free region of battery, inside with the boundary beam is inside all to be formed with gas passage and to link up each other, and some inlet port sets up on the crossbeam, and another part inlet port sets up on the boundary beam, the exhaust hole sets up on the boundary beam.

In some examples of this disclosure, the tray main part includes bottom plate, boundary beam and a plurality of crossbeam, the boundary beam sets up around the bottom plate and with the free accommodation space of battery is injectd jointly to the bottom plate, the crossbeam sets up on the bottom plate and will the bottom plate is separated into a plurality of and is used for placing the free region of battery, inside with the bottom plate is inside all to be formed with gas passage and to link up each other, and some inlet port sets up on the crossbeam, and another part inlet port sets up on the bottom plate, the exhaust hole sets up on the bottom plate.

In some examples of this disclosure, the tray main part includes bottom plate, boundary beam and a plurality of crossbeam, the boundary beam sets up around the bottom plate and with the bottom plate prescribes a limit to the free accommodation space of battery jointly, the crossbeam sets up on the bottom plate and will the bottom plate is separated into a plurality of and is used for placing the free region of battery, inside the crossbeam, inside the boundary beam with inside all being formed with gas channel of bottom plate and being link up each other, and some inlet port sets up on the crossbeam, and another part inlet port sets up the boundary beam and/or on the bottom plate, the exhaust hole sets up the boundary beam and/or on the bottom plate.

In some examples of the disclosure, a cross beam is disposed in the cross beam, the cross beam divides a gas channel in the cross beam into a first channel and a second channel, a fluid discharged from a battery cell on one side of the cross beam enters the first channel, and a fluid discharged from a battery cell on the other side of the cross beam enters the second channel.

In some examples of the disclosure, the cross beam is provided with a first air inlet hole at an interval and a second air inlet hole at an interval, fluid discharged from the battery cell positioned on one side of the cross beam enters the gas channel through the first air inlet hole, fluid discharged from the battery cell positioned on the other side of the cross beam enters the gas channel through the second air inlet hole, and at least part of the first air inlet hole and the second air inlet hole are distributed in a staggered manner.

The power battery pack comprises a plurality of battery monomers, a cover plate and the battery tray, wherein the cover plate is hermetically connected with the battery tray and forms a closed space for accommodating the battery monomers together; each battery monomer is provided with a single explosion-proof valve, the air inlet holes are arranged opposite to the single explosion-proof valves and correspond to the single explosion-proof valves one by one, so that flame, smoke or gas exhausted from each single explosion-proof valve enters the gas channel through the corresponding air inlet holes.

According to the vehicle of this disclosure, including above-mentioned power battery package.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

Fig. 1A is a schematic perspective view of a battery tray according to one embodiment of the present disclosure;

FIG. 1B is a top view of the battery tray of FIG. 1A;

fig. 1C is an exploded top view of a battery module, a gasket, and a cross member in the battery tray of fig. 1A;

fig. 1D is an exploded perspective view of a battery module, a gasket, and a cross member in the battery tray of fig. 1A;

fig. 2A is a schematic perspective view of a battery tray according to another embodiment of the present disclosure;

FIG. 2B is a schematic perspective view of the battery tray of FIG. 2A, showing the gasket;

FIG. 2C is a schematic top view of the battery tray of FIG. 2A, showing the gasket;

FIG. 2D is an assembled perspective view of the battery tray of FIG. 2A with battery cells;

FIG. 2E is a top view of the battery tray of FIG. 2A assembled with battery cells;

FIG. 2F is a cross-sectional view taken along A-A in FIG. 2E;

fig. 3A is a schematic perspective view of a battery tray according to another embodiment of the present disclosure;

FIG. 3B is an assembled perspective view of the battery tray of FIG. 3A with battery cells;

fig. 3C is a schematic top view of the battery tray and the battery cells of fig. 3A;

FIG. 3D is a cross-sectional view taken along B-B in FIG. 3C;

fig. 4A is a schematic perspective view of a battery tray according to another embodiment of the present disclosure;

FIG. 4B is a schematic top view of the battery tray of FIG. 4A;

FIG. 4C is a cross-sectional view taken along C-C in FIG. 4B;

fig. 5 is a perspective view of a battery tray according to another embodiment of the present disclosure;

FIG. 6 is a schematic perspective view of a battery tray according to another embodiment of the present disclosure, with air intake holes not shown;

FIG. 7 is a schematic structural diagram of a power battery pack according to an embodiment of the present disclosure;

FIG. 8 is a schematic cross-sectional view of a partial structure of a power battery pack according to an embodiment of the present disclosure;

FIG. 9 is a cross-sectional schematic view of a cross beam of a power battery pack according to an embodiment of the present disclosure;

FIG. 10 is a schematic view of a partial structure of a cross beam of a power battery pack according to an embodiment of the present disclosure;

FIG. 11 is a cross-sectional view taken along the direction D-D in FIG. 10 with the first one-way stopper in a first position and the second one-way stopper in a third position;

FIG. 12 is a cross-sectional view taken along the direction D-D in FIG. 4, with the first one-way stopper in a second position and the second one-way stopper in a third position.

Reference numerals:

a battery tray 100; a base plate 10; an edge rail 20; a first mounting hole 21;

a cross member 30; an intake hole 31; the second mounting hole 32;

a battery pack explosion-proof valve 40; a mounting block 50; a third mounting hole 51;

a battery cell 200; a unitary explosion-proof valve 201; a gasket 300; a through hole 3011;

a battery module 400; a first unit cell 301, a second unit cell 302; a first unitary explosion proof valve 304; a second unitary explosion proof valve 305;

a tray main body 110; a housing compartment 111; a first battery compartment 112; a second battery compartment 113;

a gas passage 1210; first air intake holes 1221;

a first one-way stop panel 1222; a connecting portion 1213; a slot 1214;

second air intake holes 1231; a second one-way stop plate 1232; a storage bag 150; a phase change material 151.

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

As shown in fig. 1A-12, according to one aspect of the present disclosure, a battery tray 100 and a power battery pack having the battery tray 100 are provided. Besides the battery tray 100, the power battery pack may further include a cover plate (not shown) and a plurality of battery cells 200, wherein the cover plate is hermetically connected with the battery tray 100 and jointly forms a closed space for accommodating the plurality of battery cells 200. Each battery cell 200 has a cell explosion-proof valve 201 (see fig. 1D). The battery tray 100 includes a tray main body 110, a gas channel 1210 is formed in at least a portion of the tray main body 110, and a plurality of air inlet holes 31 and at least one air outlet hole communicated with the gas channel 1210 are formed on the tray main body 110. The air inlet holes 31 are opposite to the single explosion-proof valves 201 and are in one-to-one correspondence, and each air inlet hole 31 is used for guiding flame, smoke or gas inside the battery unit 200 into the gas channel 1210 when the corresponding single explosion-proof valve 201 is opened. The exhaust hole is communicated with the gas channel 1210 and the space outside the power battery pack and is used for exhausting flame, smoke or gas in the gas channel 1210 to the outside of the power battery pack. When the pressure inside the battery cell 200 increases to open the cell explosion-proof valve 201 thereon, the flame, smoke or gas inside the battery cell 200 is discharged from the battery cell 200 through the cell explosion-proof valve 201, and then flows toward the air inlet hole 31 to enter the air passage 1210.

Through the technical scheme, once the air pressure in a certain single battery 200 is increased, when the single explosion-proof valve 201 on the single battery is opened, the flame, smoke or gas in the single battery 200 directly enters the gas channel 1210 of the tray main body 110 through the air inlet hole 31 in the tray main body 110, so that the flame, smoke or gas cannot enter the accommodating space of the single battery 200 in the tray, and the secondary damage to the battery or the influence on other batteries caused by the flame, smoke or gas is avoided.

In order to avoid the leakage of the flame, smoke or gas discharged from the individual explosion-proof valve 201 into the battery accommodating space, preferably, as shown in fig. 1C-1D, fig. 2B-2C and fig. 3D, the power battery pack further includes a gasket 300, the gasket 300 is disposed between the battery cell 200 and the tray main body 110 and has flame retardant performance and certain compressibility, a plurality of through holes 3011 are disposed on the gasket 300, the through holes 3011 correspond to the air inlet holes 31 on the tray main body 110 one to one, and each through hole 3011 is located between the corresponding air inlet hole 31 and the individual explosion-proof valve 201. The gasket 300 forms a seal around the air intake holes 31 by the pressing of the battery cells 200 and the tray main body 110, preventing flame, smoke, or gas from leaking into the battery receiving space.

In order to prevent external dust and water from entering the battery receiving space through the vent hole and the gas channel 1210, it is preferable that the battery tray 100 further includes a battery pack explosion-proof valve 40 as shown in fig. 1A to 1B, 2A to 2E, 3A to 3C, 4C, 5, and 6, and the battery pack explosion-proof valve 40 is mounted on the vent hole to block the vent hole by the battery pack explosion-proof valve 40. The flame, smoke or gas discharged from the single explosion-proof valve 201 enters through the gas inlet hole 31 and is accumulated in the gas channel 1210, and when the gas pressure in the gas channel 1210 reaches a certain value, the battery pack explosion-proof valve 40 is opened to discharge the flame, smoke or gas accumulated in the gas channel 1210. Here, the battery pack explosion-proof valve 40 and the cell explosion-proof valve 201 are well known to those skilled in the art, and the structure and the operation principle thereof will not be described herein.

In the present disclosure, the battery tray 100 may have any suitable structure, and the present disclosure is not limited thereto. Several preferred embodiments of the battery tray 100 are described in detail below, with the understanding that these preferred embodiments are merely provided to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.

In a first embodiment, as shown in fig. 1A to 1D, the tray main body 110 includes a bottom plate 10, an edge beam 20, and a plurality of cross beams 30, the edge beam 20 is disposed around the bottom plate 10 and defines a battery accommodating space together with the bottom plate 10, the cross beams 30 are disposed on the bottom plate 10, the bottom plate 10 is divided into a plurality of regions for accommodating the battery cells 200 by the cross beams 30, gas channels 1210 are formed inside the cross beams 30 and inside the edge beam 20 and are communicated with each other, the gas inlets 31 are disposed on the cross beams 30, and the gas outlets are disposed on the edge beam 20. In this embodiment, the flame, smoke, or gas discharged from the single explosion-proof valve 201 enters the gas channel 1210 inside the cross beam 30 through the gas inlet hole 31 on the cross beam 30, and then diffuses from the gas channel 1210 inside the cross beam 30 to the gas channel 1210 inside the edge beam 20, when the gas pressure in the gas channel 1210 reaches a certain value, the battery pack explosion-proof valve 40 on the edge beam 20 is opened, and the flame, smoke, or gas accumulated in the gas channel 1210 is discharged to the outside of the power battery pack through the battery pack explosion-proof valve 40.

In the first embodiment, as shown in fig. 1C-1D, a plurality of battery cells 200 form a battery module 400, gaskets 300 are disposed between the battery module 400 and the cross member 30, each gasket 300 is provided with a plurality of through holes 3011, the through holes 3011 correspond to the air inlet holes 31 on the cross member 30 one by one, and each through hole 3011 is located between the corresponding air inlet hole 31 and the cell explosion-proof valve 201.

In a second embodiment, as shown in fig. 4A to 4C, the tray main body 110 includes a bottom plate 10, an edge beam 20, and a plurality of cross beams 30, the edge beam 20 is disposed around the bottom plate 10 and defines a battery accommodating space together with the bottom plate 10, the cross beams 30 are disposed on the bottom plate 10, the bottom plate 10 is divided into a plurality of regions for accommodating the battery cells 200 by the cross beams 30, gas channels 1210 are formed inside the cross beams 30 and inside the bottom plate 10 and are communicated with each other, the gas inlets 31 are disposed on the cross beams 30, and the gas outlets are disposed on the bottom plate 10. In this embodiment, the flame, smoke or gas discharged from the single explosion-proof valve 201 enters the gas channel 1210 inside the cross beam 30 through the gas inlet hole 31 on the cross beam 30, and then diffuses from the gas channel 1210 inside the cross beam 30 to the gas channel 1210 inside the base plate 10, when the gas pressure in the gas channel 1210 reaches a certain value, the battery pack explosion-proof valve 40 on the base plate 10 is opened, and the flame, smoke or gas accumulated in the gas channel 1210 is discharged to the outside of the power battery pack through the battery pack explosion-proof valve 40.

Since the upper portion of the power battery pack faces the passenger compartment, in the second embodiment, since the exhaust holes are provided on the bottom plate 10, the gas in the gas passage 1210 is discharged downward, which is safer.

In the third embodiment, the tray main body 110 includes a bottom plate 10, a side beam 20, and a plurality of cross beams 30, the side beam 20 is disposed around the bottom plate 10 and defines a battery accommodating space together with the bottom plate 10, the cross beams 30 are disposed on the bottom plate 10, the cross beams 30 divide the bottom plate 10 into a plurality of areas for placing the battery cells 200, the gas passages 1210 are formed inside the cross beams 30 and inside the side beam 20 and are communicated with each other, a part of the gas inlets 31 are disposed on the cross beams 30, another part of the gas inlets 31 are disposed on the side beam 20, and the gas outlets are disposed on the side beam 20. In this embodiment, the flame, smoke or gas discharged from the single explosion-proof valve 201 enters the gas channel 1210 inside the cross beam 30 through the gas inlet hole 31 on the cross beam 30, and/or enters the gas channel 1210 inside the edge beam 20 through the gas inlet hole 31 on the edge beam 20, when the gas pressure in the gas channel 1210 reaches a certain value, the battery pack explosion-proof valve 40 on the edge beam 20 is opened, and the flame, smoke or gas accumulated in the gas channel 1210 is discharged to the outside of the power battery pack through the battery pack explosion-proof valve 40.

In the fourth embodiment, the tray main body 110 includes a bottom plate 10, a side beam 20, and a plurality of cross beams 30, the side beam 20 is disposed around the bottom plate 10 and defines a battery accommodating space together with the bottom plate 10, the cross beam 30 is disposed on the bottom plate 10, the cross beam 30 divides the bottom plate 10 into a plurality of areas for placing the battery cells 200, the inside of the cross beam 30 and the inside of the bottom plate 10 are both formed with gas channels 1210 and are communicated with each other, a part of the gas inlets 31 are disposed on the cross beam 30, another part of the gas inlets 31 are disposed on the bottom plate 10, and the gas outlets are disposed on the bottom plate 10. In this embodiment, the flame, smoke or gas discharged from the single explosion-proof valve 201 enters the gas channel 1210 inside the cross beam 30 through the gas inlet hole 31 on the cross beam 30, and/or enters the gas channel 1210 inside the bottom plate 10 through the gas inlet hole 31 on the bottom plate 10, when the gas pressure in the gas channel 1210 reaches a certain value, the battery pack explosion-proof valve 40 on the bottom plate 10 is opened, and the flame, smoke or gas accumulated in the gas channel 1210 is discharged out of the power battery pack through the battery pack explosion-proof valve 40.

Since the upper portion of the power battery pack faces the passenger compartment, in the fourth embodiment, since the exhaust holes are provided on the bottom plate 10, the gas in the gas passage 1210 is discharged downward, which is safer.

In a fifth embodiment, the tray main body 110 includes a bottom plate 10, a side beam 20, and a plurality of cross beams 30, the side beam 20 is disposed around the bottom plate 10 and defines a battery accommodating space together with the bottom plate 10, the cross beams 30 are disposed on the bottom plate 10, the cross beams 30 divide the bottom plate 10 into a plurality of areas for accommodating the battery cells 200, the air passages 1210 are formed inside the cross beams 30, the inside of the side beam 20 and the inside of the bottom plate 10 and are communicated with each other, a part of the air inlets 31 are disposed on the cross beams 30, a part of the air inlets 31 are disposed on the side beam 20, and a part of the air inlets 31 are disposed on the bottom plate 10, and the air outlets are disposed on the side beam 20. In this embodiment, the flame, smoke or gas discharged from the single explosion-proof valve 201 enters the gas channel 1210 inside the cross beam 30 through the gas inlet hole 31 on the cross beam 30, and/or enters the gas channel 1210 inside the bottom plate 10 through the gas inlet hole 31 on the bottom plate 10, and/or enters the gas channel 1210 inside the edge beam 20 through the gas inlet hole 31 on the edge beam 20, when the gas pressure in the gas channel 1210 reaches a certain value, the battery pack explosion-proof valve 40 on the edge beam 20 is opened, and the flame, smoke or gas accumulated in the gas channel 1210 is discharged to the outside of the power battery pack through the battery pack explosion-proof valve 40.

In a sixth embodiment, the tray main body 110 includes a bottom plate 10, a side beam 20, and a plurality of cross beams 30, the side beam 20 is disposed around the bottom plate 10 and defines a battery accommodating space together with the bottom plate 10, the cross beam 30 is disposed on the bottom plate 10, the cross beam 30 divides the bottom plate 10 into a plurality of areas for placing the battery cells 200, the inside of the cross beam 30, the inside of the side beam 20 and the inside of the bottom plate 10 are all formed with gas channels 1210 and are communicated with each other, a part of the gas inlets 31 are disposed on the cross beam 30, a part of the gas inlets 31 are disposed on the side beam 20, a part of the gas inlets 31 are disposed on the bottom plate 10, and the gas outlets are disposed on the bottom plate 10. In this embodiment, the flame, smoke or gas discharged from the single explosion-proof valve 201 enters the gas channel 1210 inside the cross beam 30 through the gas inlet hole 31 on the cross beam 30, and/or enters the gas channel 1210 inside the bottom plate 10 through the gas inlet hole 31 on the bottom plate 10, and/or enters the gas channel 1210 inside the edge beam 20 through the gas inlet hole 31 on the edge beam 20, when the gas pressure in the gas channel 1210 reaches a certain value, the battery pack explosion-proof valve 40 on the bottom plate 10 is opened, and the flame, smoke or gas accumulated in the gas channel 1210 is discharged to the outside of the power battery pack through the battery pack explosion-proof valve 40.

Since the upper portion of the power battery pack faces the passenger compartment, in the sixth embodiment, since the exhaust holes are provided on the bottom plate 10, the gas in the gas passage 1210 is discharged downward, which is safer.

In a seventh embodiment, the tray main body 110 includes a bottom plate 10, a side beam 20, and a plurality of cross beams 30, the side beam 20 is disposed around the bottom plate 10 and defines a battery accommodating space together with the bottom plate 10, the cross beams 30 are disposed on the bottom plate 10, the cross beams 30 divide the bottom plate 10 into a plurality of areas for accommodating the battery cells 200, the air passages 1210 are formed inside the cross beams 30, the inside of the side beam 20 and the inside of the bottom plate 10 and are communicated with each other, a part of the air inlets 31 are disposed on the cross beams 30, a part of the air inlets 31 are disposed on the side beam 20, and a part of the air inlets 31 are disposed on the bottom plate 10, a part of the air outlets are disposed on the side beam 20, and another part of the air outlets are disposed on the bottom plate 10. In this embodiment, the flame, smoke or gas discharged from the single explosion-proof valve 201 enters the gas channel 1210 inside the cross beam 30 through the gas inlet hole 31 on the cross beam 30, and/or enters the gas channel 1210 inside the bottom plate 10 through the gas inlet hole 31 on the bottom plate 10, and/or enters the gas channel 1210 inside the edge beam 20 through the gas inlet hole 31 on the edge beam 20, when the gas pressure in the gas channel 1210 reaches a certain value, the battery pack explosion-proof valve 40 on the bottom plate 10 and/or the edge beam 20 is opened, and the flame, smoke or gas accumulated in the gas channel 1210 is discharged to the outside of the power battery pack through the battery pack explosion-proof valve 40.

In the eighth embodiment, the tray main body 110 includes a bottom plate 10, a side beam 20, and a plurality of cross beams 30, the side beam 20 is disposed around the bottom plate 10 and defines a battery accommodating space together with the bottom plate 10, the cross beam 30 is disposed on the bottom plate 10, the cross beam 30 divides the bottom plate 10 into a plurality of areas for placing the battery cells 200, the cross beam 30 is disposed inside, the gas passages 1210 are formed inside the side beam 20 and the bottom plate 10, and are communicated with each other, the gas inlets 31 are disposed on the cross beam 30, a part of the gas outlets are disposed on the side beam 20, and another part of the gas outlets are disposed on the bottom plate 10. In this embodiment, the flame, smoke or gas discharged from the single explosion-proof valve 201 enters the gas channel 1210 inside the cross beam 30 through the gas inlet hole 31 on the cross beam 30, when the gas pressure in the gas channel 1210 reaches a certain value, the battery pack explosion-proof valve 40 on the bottom plate 10 and/or the edge beam 20 is opened, and the flame, smoke or gas accumulated in the gas channel 1210 is discharged out of the power battery pack through the battery pack explosion-proof valve 40.

In a ninth embodiment, the tray main body 110 includes a bottom plate 10, a side beam 20, and a plurality of cross beams 30, the side beam 20 is disposed around the bottom plate 10 and defines a battery accommodating space together with the bottom plate 10, the cross beams 30 are disposed on the bottom plate 10, the cross beams 30 divide the bottom plate 10 into a plurality of areas for placing the battery cells 200, the air passages 1210 are formed inside the cross beams 30, the inside of the side beam 20 and the inside of the bottom plate 10 and are communicated with each other, a part of the air inlets 31 are disposed on the cross beams 30, another part of the air inlets 31 are disposed on the side beam 20, a part of the air outlets are disposed on the side beam 20, and another part of the air outlets are disposed on the bottom plate 10. In this embodiment, the flame, smoke or gas discharged from the single explosion-proof valve 201 enters the gas channel 1210 inside the cross beam 30 through the gas inlet hole 31 on the cross beam 30, and/or enters the gas channel 1210 inside the edge beam 20 through the gas inlet hole 31 on the edge beam 20, when the gas pressure in the gas channel 1210 reaches a certain value, the battery pack explosion-proof valve 40 on the bottom plate 10 and/or the edge beam 20 is opened, and the flame, smoke or gas accumulated in the gas channel 1210 is discharged out of the power battery pack through the battery pack explosion-proof valve 40.

In a tenth embodiment, the tray main body 110 includes a bottom plate 10, a side beam 20, and a plurality of cross beams 30, the side beam 20 is disposed around the bottom plate 10 and defines a battery accommodating space together with the bottom plate 10, the cross beams 30 are disposed on the bottom plate 10, the cross beams 30 divide the bottom plate 10 into a plurality of areas for placing the battery cells 200, the air passages 1210 are formed inside the cross beams 30, the inside of the side beam 20 and the inside of the bottom plate 10 and are communicated with each other, a part of the air inlets 31 are disposed on the cross beams 30, another part of the air inlets 31 are disposed on the bottom plate 10, a part of the air outlets are disposed on the side beam 20, and another part of the air outlets are disposed on the bottom plate 10. In this embodiment, the flame, smoke or gas discharged from the single explosion-proof valve 201 enters the gas channel 1210 inside the cross beam 30 through the gas inlet hole 31 on the cross beam 30, and/or enters the gas channel 1210 inside the bottom plate 10 through the gas inlet hole 31 on the bottom plate 10, when the gas pressure in the gas channel 1210 reaches a certain value, the battery pack explosion-proof valve 40 on the bottom plate 10 and/or the edge beam 20 is opened, and the flame, smoke or gas accumulated in the gas channel 1210 is discharged out of the power battery pack through the battery pack explosion-proof valve 40.

In the eleventh embodiment, the tray main body 110 includes a bottom plate 10, a side sill 20, and a plurality of cross members 30, the side sill 20 is disposed around the bottom plate 10 and defines a battery accommodating space together with the bottom plate 10, the cross members 30 are disposed on the bottom plate 10, the cross members 30 divide the bottom plate 10 into a plurality of regions for accommodating the battery cells 200, gas passages 1210 are formed inside the cross members 30, inside the side sill 20, and inside the bottom plate 10, and the gas passage 1210 inside the cross member 30 is communicated with the gas passage 1210 inside the side member 20, the gas passage 1210 in the side sill 20 is communicated with the gas passage 1210 in the base plate 10, the gas passage 1210 in the cross member 30 is communicated with the gas passage 1210 in the bottom plate 10 via the gas passage 1210 in the side member 20, the air inlet 31 is arranged on the cross beam 30, and the air outlet is arranged on the bottom plate 10. In this embodiment, the flame, smoke, or gas discharged from the single explosion-proof valve 201 enters the gas channel 1210 inside the cross beam 30 through the gas inlet hole 31 on the cross beam 30, diffuses from the gas channel 1210 inside the cross beam 30 to the gas channel 1210 inside the edge beam 20, and then diffuses from the gas channel 1210 inside the edge beam 20 to the gas channel 1210 inside the bottom plate 10, when the gas pressure in the gas channel 1210 reaches a certain value, the battery pack explosion-proof valve 40 on the bottom plate 10 is opened, and the flame, smoke, or gas accumulated in the gas channel 1210 is discharged to the outside of the power battery pack through the battery pack explosion-proof valve 40.

In the twelfth embodiment, the tray main body 110 includes a bottom plate 10, an edge beam 20, and a plurality of cross beams 30, the edge beam 20 is disposed around the bottom plate 10 and defines a battery accommodating space together with the bottom plate 10, the cross beams 30 are disposed on the bottom plate 10, the cross beams 30 divide the bottom plate 10 into a plurality of regions for accommodating the battery cells 200, gas passages 1210 are formed inside the cross beams 30, inside the edge beam 20, and inside the bottom plate 10, and the gas passage 1210 inside the cross beam 30 is communicated with the gas passage 1210 inside the base plate 10, the air passage 1210 of the bottom plate 10 is communicated with the air passage 1210 of the side sill 20, the gas passage 1210 in the cross member 30 is communicated with the gas passage 1210 in the side sill 20 through the gas passage 1210 in the base plate 10, the air inlet holes 31 are formed in the cross beam 30, and the air outlet holes are formed in the edge beam 20. In this embodiment, the flame, smoke, or gas discharged from the single explosion-proof valve 201 enters the gas channel 1210 inside the cross beam 30 through the gas inlet hole 31 on the cross beam 30, and diffuses from the gas channel 1210 inside the cross beam 30 to the gas channel 1210 inside the bottom plate 10, and then diffuses from the gas channel 1210 inside the bottom plate 10 to the gas channel 1210 inside the edge beam 20, when the gas pressure in the gas channel 1210 reaches a certain value, the battery pack explosion-proof valve 40 on the edge beam 20 is opened, and the flame, smoke, or gas accumulated in the gas channel 1210 is discharged to the outside of the power battery pack through the battery pack explosion-proof valve 40.

In a thirteenth embodiment, as shown in fig. 3A to 3D, the tray main body 110 includes a bottom plate 10 and an edge beam 20, the edge beam 20 is disposed around the bottom plate 10 and defines a battery accommodating space together with the bottom plate 10, a gas passage 1210 is formed inside the edge beam 20, and the gas inlet hole 31 and the gas outlet hole are disposed on the edge beam 20. In this embodiment, the gas channel 1210 is formed in the edge beam 20, the flame, smoke, or gas discharged from the single explosion-proof valve 201 enters the gas channel 1210 inside the edge beam 20 through the gas inlet hole 31 on the edge beam 20, when the gas pressure in the gas channel 1210 reaches a certain value, the battery pack explosion-proof valve 40 on the edge beam 20 is opened, and the flame, smoke, or gas accumulated in the gas channel 1210 is discharged to the outside of the power battery pack through the battery pack explosion-proof valve 40.

In the thirteenth embodiment, as shown in fig. 3D, a plurality of battery cells 200 form a battery module 400, gaskets 300 are disposed between the battery module 400 and the edge beams 20, each gasket 300 is provided with a plurality of through holes 3011, the through holes 3011 correspond to the air inlet holes 31 on the edge beams 20 one by one, and each through hole 3011 is located between the corresponding air inlet hole 31 and the cell explosion-proof valve 201.

When thermal runaway of the battery cell 200 occurs, several tens or even hundreds of liters of smoke or gas are generally generated in a short time. In the tenth embodiment, the exhaust path is made shorter by providing both the intake holes 31 and the exhaust holes on the side sill 20, so that smoke or gas is exhausted more quickly, and the safety of the power battery pack is improved.

In a fourteenth embodiment, as shown in fig. 2A to 2F, the tray main body 110 includes a bottom plate 10 and an edge beam 20, the edge beam 20 is disposed around the bottom plate 10 and defines a battery accommodating space together with the bottom plate 10, a gas passage 1210 is formed inside the bottom plate 10, and the gas inlet hole 31 and the gas outlet hole are disposed on the bottom plate 10. In this embodiment, a gas channel 1210 is formed in the base plate 10, flame, smoke, or gas discharged from the individual explosion-proof valve 201 enters the gas channel 1210 inside the base plate 10 through the gas inlet hole 31 on the base plate 10, when the gas pressure in the gas channel 1210 reaches a certain value, the battery pack explosion-proof valve 40 on the base plate 10 is opened, and the flame, smoke, or gas accumulated in the gas channel 1210 is discharged to the outside of the power battery pack through the battery pack explosion-proof valve 40.

In the fourteenth embodiment, as shown in fig. 2B-2C, a plurality of battery cells 200 form a battery module 400, gaskets 300 are disposed between the battery module 400 and the edge beams 20, each gasket 300 is provided with a plurality of through holes 3011, the through holes 3011 correspond to the air inlets 31 on the base plate 10 one by one, and each through hole 3011 is located between the corresponding air inlet 31 and the cell explosion-proof valve 201.

When thermal runaway of the battery cell 200 occurs, several tens or even hundreds of liters of smoke or gas are generally generated in a short time. In the fourteenth embodiment, the air inlet holes 31 and the air outlet holes are both arranged on the bottom plate 10, so that the air outlet path is shorter, smoke or gas is exhausted more quickly, and the safety of the power battery pack is improved.

Since the upper portion of the power battery pack faces the passenger compartment, in the fourteenth embodiment, since the exhaust holes are provided on the bottom plate 10, the gas in the gas passage 1210 is discharged downward, which is safer.

In the fifteenth embodiment, as shown in fig. 5, the tray main body 110 includes a bottom plate 10 and an edge beam 20, the edge beam 20 is disposed around the bottom plate 10 and defines a battery accommodating space together with the bottom plate 10, the inside of the edge beam 20 and the inside of the bottom plate 10 are formed with gas passages 1210 and are communicated with each other, the gas inlet holes 31 are disposed on the bottom plate 10, and the gas outlet holes are disposed on the edge beam 20. In this embodiment, the flame, smoke, or gas discharged from the single explosion-proof valve 201 enters the gas channel 1210 inside the bottom plate 10 through the gas inlet hole 31 on the bottom plate 10, and then diffuses from the gas channel 1210 inside the bottom plate 10 to the gas channel 1210 inside the edge beam 20, when the gas pressure in the gas channel 1210 reaches a certain value, the battery pack explosion-proof valve 40 on the edge beam 20 is opened, and the flame, smoke, or gas accumulated in the gas channel 1210 is discharged to the outside of the power battery pack through the battery pack explosion-proof valve 40.

In the sixteenth embodiment, the tray main body 110 includes a bottom plate 10 and a side sill 20, the side sill 20 is disposed around the bottom plate 10 and defines a battery accommodating space together with the bottom plate 10, the inside of the side sill 20 and the inside of the bottom plate 10 are both formed with a gas passage 1210 and are communicated with each other, the gas inlet holes 31 are disposed on the side sill 20, and the gas outlet holes are disposed on the bottom plate 10. In this embodiment, the flame, smoke, or gas discharged from the single explosion-proof valve 201 enters the gas channel 1210 inside the edge beam 20 through the gas inlet hole 31 on the edge beam 20, and then diffuses from the gas channel 1210 inside the edge beam 20 to the gas channel 1210 inside the bottom plate 10, when the gas pressure in the gas channel 1210 reaches a certain value, the battery pack explosion-proof valve 40 on the bottom edge 10 is opened, and the flame, smoke, or gas accumulated in the gas channel 1210 is discharged to the outside of the power battery pack through the battery pack explosion-proof valve 40.

In the present disclosure, the battery tray 100 may have a rectangular shape, including a rectangular bottom plate 10 and edge beams 20 disposed around the bottom plate 10. The edge beams 20 may be integral with the base 10 or may be separate structures, such as by welding or other processes around the base to attach the edge beams 20. The edge beams 20 may be of unitary construction, and may be formed by welding four edge beams 20 end-to-end or by joining them together by other processes. The cross member 30 may be formed as a single body with the base plate 10, or may be formed as a separate body, for example, by welding or other processes to connect the cross member 30 to the base plate 10.

In the first to twelfth embodiments described above, the cross member 30 is provided inside the battery tray 100, the cross member 30 serves to reinforce the battery tray 100, and at least a part of the air intake holes 31 is provided on the cross member 30. However, in the above-mentioned thirteenth to sixteenth embodiments, there is no particular limitation on whether the cross member is provided inside the battery tray, the cross member 30 may not be provided inside the battery tray, and the air inlet holes 31 may be directly provided on the side member 20 and/or the bottom plate 10.

In the first to twelfth embodiments described above, the cross members 30 may be arranged in any suitable arrangement within the cell tray, and the disclosure is not limited thereto. Alternatively, as shown in fig. 1A and 1B, the cross members 30 may be arranged parallel to and spaced apart from each other, the cross members 30 being perpendicular to the floor panel 10, and both ends of the cross members 30 being connected to the edge beams 20. Alternatively, as shown in fig. 6, the cross member 30 may also include one or more longitudinal cross members 31 extending along the length direction of the tray main body 110 and one or more transverse cross members 32 extending along the width direction of the tray main body 110, the longitudinal cross members 31 and the transverse cross members 32 are arranged in a crossing manner, two ends of the longitudinal cross member 31 are connected to the edge members 20, and two ends of the transverse cross member 32 are connected to the edge members 20.

In the present disclosure, the gas channel 1210 formed inside the tray main body 110 is used for receiving and storing the flame, smoke or gas discharged from the battery cells 200, all the smoke and gas discharged from the battery cells 200 can enter the gas channel 1210 through the corresponding gas inlet holes 31, and the battery pack explosion-proof valve 40 is used for controlling the exhaust of the gas channel 1210.

The number of the gas passages 1210 is not limited in the present disclosure, and one single battery cell 200 may correspond to one gas passage 1210, or a plurality of single battery cells 200 may share one gas passage 1210.

In the first embodiment, only one air passage 1210 may be formed inside the edge beam 20, and the air passage 1210 is communicated with the air passage 1210 inside each cross beam 30; a plurality of independent gas passages 1210 may be formed in the edge sill 20, and the gas passage 1210 in each cross member 30 may communicate with only the corresponding gas passage 1210 in the edge sill 20.

In the second embodiment, only one gas channel 1210 may be formed inside the base plate 10, and the gas channel 1210 is communicated with the gas channel 1210 inside each cross beam 30; a plurality of independent gas passages 1210 may be formed in the bottom plate 10, and the gas passages 1210 in each of the cross beams 30 may communicate only with the corresponding gas passages 1210 in the bottom plate 10.

In the thirteenth embodiment, only one gas channel 1210 may be formed inside the edge beam 20, and all the battery cells 200 share the gas channel 1210, that is, all the gas inlet holes 31 and the gas outlet holes are communicated with the gas channel 1210; a plurality of independent gas channels 1210 are formed in the edge beam 20, and each gas channel 1210 corresponds to a plurality of battery cells 200, that is, each gas channel 1210 has a plurality of gas inlets 31 and at least one gas outlet; it is also possible that a plurality of independent gas passages 1210 are formed inside the side sill 20, and each gas passage 1210 corresponds to one battery cell 200, that is, each gas passage 1210 has one gas inlet hole 31 and one gas outlet hole.

In the fourteenth embodiment, only one gas channel 1210 may be formed inside the bottom plate 10, and all the battery cells 200 share the gas channel 1210, that is, all the gas inlet holes 31 and the gas outlet holes are communicated with the gas channel 1210; a plurality of independent gas channels 1210 are formed in the bottom plate 10, and each gas channel 1210 corresponds to a plurality of battery cells 200, that is, each gas channel 1210 has a plurality of gas inlet holes 31 and at least one gas outlet hole; it is also possible that a plurality of mutually independent gas channels 1210 are formed inside the base plate 10, and each gas channel 1210 corresponds to one battery cell 200, i.e., each gas channel 1210 has one intake hole 31 and one exhaust hole.

In the present disclosure, preferably, each gas channel 1210 corresponds to a plurality of battery cells 200, that is, a plurality of battery cells 200 may share one gas channel 1210, so that the number of the vent holes and the number of the battery pack explosion-proof valves 40 may be reduced, and the number of the vent holes and the number of the battery pack explosion-proof valves 40 may be smaller than the number of the air inlet holes 31, thereby reducing the processing difficulty of the tray main body 110, reducing the number of the required battery pack explosion-proof valves 40, and reducing the manufacturing cost. Specifically, the number of the battery pack explosion-proof valves 40 may be one, two, three, or more, which is not limited by the present disclosure.

In the first and second embodiments, as shown in fig. 1C and 1D, the number of the sealing gaskets 300 may be equal to the number of the cross beams 30, and the sealing gaskets are in one-to-one correspondence with the cross beams 30, each sealing gasket 300 is disposed between the corresponding cross beam 30 and the corresponding battery cell 200, the sealing gaskets 300 may be integrally formed or may be separately disposed, preferably, the sealing gaskets are separately disposed, so as to be conveniently matched with the battery modules 400 having different numbers of battery cells 200.

In the present disclosure, as shown in fig. 1B, the upper edge of the edge beam 20 may be provided with a plurality of first mounting holes 21, and bolts pass through the first mounting holes 21 and are connected to the cover plate, so as to connect the edge beam 20 to the cover plate. In the first to fifth embodiments, as shown in fig. 1B, the upper edge of the cross beam 30 may be flush with the upper edge of the edge beam 20, the upper edge of the cross beam 30 may be provided with a second mounting hole 32, and a bolt passes through the second mounting hole 32 and is connected to the cover plate, so as to connect the cross beam 30 to the cover plate.

In the present disclosure, as shown in fig. 1B, one or more mounting blocks 50 may be provided at the outer side of the side sill 20, one or more third mounting holes 51 may be provided at the mounting blocks 50, and bolts may be passed through the third mounting holes 51 and coupled to the bottom of the vehicle, thereby fixing the battery tray 100 to the bottom of the vehicle.

In the prior art, a smoke and/or gas sensor is arranged in a battery tray, when a certain battery cell 200 relatively far away from the smoke and/or gas sensor is out of control due to heat, an explosion-proof valve opens to release gas or smoke, and due to the large volume of the tray, the released gas or smoke diffuses around the inside of the battery tray and is diluted, the smoke and/or gas sensor may not detect the discharged gas or smoke in time, and the sensitivity is reduced, in the present disclosure, a smoke or gas sensor (not shown) may be arranged in a gas channel 1210 of the battery tray 100, the space of the gas channel 1210 is significantly smaller relative to the volume of the battery tray, and the gas channel 1210 may exhaust the corresponding smoke or gas in a predetermined direction, therefore, once the single explosion-cell explosion-proof valve 201 is opened, the smoke and/or gas sensor may sense the corresponding smoke or gas, the smog or gas inductor gives a signal feedback to the whole vehicle control system, reminds a driver to make a response, or starts actions such as gas fire extinguishing, flame retarding and the like of the power battery pack, and improves the safety of the power battery pack.

The battery tray 100 of the battery module 400, and the vehicle according to the embodiment of the present disclosure are described below with reference to fig. 7 to 12.

As shown in fig. 7 to 12, the battery tray 100 of the battery module 400 according to an aspect of the present disclosure includes a tray main body 110, a cross member 30, and a receiving pocket 150.

Specifically, as shown in fig. 7, the tray main body 110 has a receiving compartment 111 therein. The cross member 30 is provided in the tray main body 110 to divide the interior of the tray main body 110 into a first battery compartment 112 and a second battery compartment 113. That is, the receiving compartment 111 may be partitioned into the first battery compartment 112 and the second battery compartment 113 by the cross member 30. Wherein the receiving compartment 111 may be used to hold the battery cell 200. For convenience of description, the battery cell 200 placed in the first battery compartment 112 is referred to as a first battery cell 301, and the battery cell 200 placed in the second battery compartment 113 is referred to as a second battery cell 302. In other words, the first battery compartment 112 is adapted to hold at least one first battery cell 301, and the second battery compartment 113 is adapted to hold at least one second battery cell 302.

As shown in fig. 7, the first unit cell 301 has a first unit cell explosion-proof valve 304, and the second unit cell 302 has a second unit cell explosion-proof valve 305. As shown in fig. 8, the cross member 30 is provided with first and second air inlet holes 1221 and 1231, and the cross member 30 is provided with an air passage 1210 therein, and the fluid discharged from the first unit explosion-proof valve 304 can enter the air passage 1210 through the first air inlet holes 1221, and the fluid discharged from the second unit explosion-proof valve 305 can enter the air passage 1210 through the second air inlet holes 1231.

It should be noted that, in the working process of the battery module, if an abnormality occurs in a certain battery cell 200, the internal pressure of the battery cell 200 increases, so that when the cell explosion-proof valve on the battery cell 200 is opened, a fluid (for example, a fluid with high temperature and high pressure such as flame, smoke, or gas) generated inside the battery cell 200 may directly pass through the gas passage 1210, so that the flame, smoke, or gas does not enter the battery tray 100.

In order to prevent the abnormal battery from ejecting the high-temperature and high-pressure fluid to affect the other battery cells 200, a storage bag 150 may be provided in the gas passage 1210, and the phase change material 151 may be stored in the storage bag 150. When the air pressure and the temperature in the air passage 1210 change, the phase change material 151 in the storage bag 150 generates phase change and absorbs heat in the air passage 1210 quickly, so that the temperature in the air passage 1210 can be reduced quickly, adverse effects on other battery cells 200 due to overhigh heat in the air passage 1210 can be avoided, other battery cells 200 can be protected, and the safety of the battery module 400 can be improved.

It should also be noted that the phase change material 151 may be a cooling liquid, such as clear, colorless, odorless, and insulating liquid environmental fire extinguishing agent, perfluorohexanone. When the monomer explosion-proof valve 201 sprays high-temperature gas and the high-temperature gas enters the lifting channel, the perfluorohexanone liquid with the boiling point of only about fifty degrees can be evaporated, heat is absorbed in the evaporation process, the evaporation heat is only about 1/25 of water, and the purpose of quickly taking away heat and reducing the temperature is achieved. In addition to the liquid coolant, such as perfluorohexanone, various phase change materials 151 can be selected, which are environmentally friendly materials that undergo a phase change from a final heated state to a gaseous state, have a high latent heat, and a trigger temperature of about 200 ℃.

According to the battery tray 100 of the battery module 400 of the embodiment of the present disclosure, the storage bag 150 for storing the phase change material is disposed in the gas channel 1210, so that the phase change process of the phase change material 151 can be utilized to absorb heat in the gas channel 1210, thereby rapidly reducing the temperature in the gas channel 1210, avoiding adverse effects on other battery cells 200 due to overhigh heat in the gas channel 1210, protecting other battery cells 200, and further improving the safety of the battery module 400.

To facilitate securing the pouch 150, an adhesive layer is provided between the pouch 150 and the inner wall of the gas channel 1210 according to some embodiments of the present disclosure. It is understood that the pouch 150 may be fixed to the inner circumferential wall of the gas passage 1210 using an adhesive layer. Further, the adhesive layer may be a double-sided tape. It should be noted that the double-sided adhesive tape has a simple structure, good viscosity, and the viscosity is less affected by temperature, so that the double-sided adhesive tape has good viscosity stability.

According to some embodiments of the present disclosure, at least a portion of the tray main body 110 is a hollow structure, and the hollow structure is used as the gas channel 1210, such that the gas channel 1210 can be formed in the tray main body 110, so that the gas channel 1210 can be prevented from being formed outside the tray main body 110, and the volume of the tray main body 110 can be reduced.

According to some embodiments of the present disclosure, the pouch 150 may be a sealed pouch adapted to contain the liquid phase change material 151. The liquid phase-change material 151 has stable performance, high phase-change speed and strong heat absorption capacity, so that high-temperature and high-pressure fluid can be rapidly cooled. To prevent the pouch 150 from being melted through by the high temperature fluid, in some embodiments, a thermal insulation layer may be disposed inside the pouch 150. By providing the heat insulating layer in the storage bag 150, the substance ejected from the unit explosion-proof valve 201 can be locked while the temperature of the gas is reduced, and the risk that the peripheral wall of the gas passage 1210 is burned through due to an excessively high temperature or an excessively high heat transfer is reduced.

According to some embodiments of the present disclosure, the receiving bag 150 may be an aerogel bag or a ceramic fiber bag. It can be understood that, when the gas temperature of the storage bag 150 constructed by aerogel or ceramic fiber reaches the temperature range of 200-.

According to some embodiments of the present disclosure, the first air inlet holes 1221 may be a plurality of spaced apart, and the second air inlet holes 1231 may also be a plurality of spaced apart. This makes it possible for the battery tray 100 to accommodate more battery cells 200. Further, at least a portion of the first inlet holes 1221 and the second inlet holes 1231 are staggered from each other.

It should be noted that, when a first single battery is abnormal, the high-temperature and high-pressure fluid generated by the first single battery breaks through the first single explosion-proof valve and enters the gas channel through the first gas inlet, and if the fluid speed is too fast, the fluid entering from the first gas inlet is easily injected to the second gas inlet, so that the second explosion-proof valve or the second single battery communicated with the second gas inlet is easily adversely affected, and even the performance of the second single battery is damaged. By staggering at least part of the first air inlet hole 1221 and the second air inlet hole 1231 from each other, it is possible to reduce or even avoid the adverse effect of the high-temperature and high-pressure fluid entering from the first air inlet hole 1221 on the second unit cell 302 communicated with the second air inlet hole 1231, or reduce or even avoid the adverse effect of the high-temperature and high-pressure fluid entering from the second air inlet hole 1231 on the first unit cell 301 communicated with the first air inlet hole 1221.

Further, the first air intake holes 1221 are positioned above the second air intake holes 1231. It is understood that, when the distribution of the first and second air inlet holes 1221 and 1231 is provided, the first and second air inlet holes 1221 and 1231 may be separately arranged using an upper-lower relationship. Thereby simplifying the process difficulty of the cross member 30.

As shown in fig. 10 and 12, according to some embodiments of the present disclosure, the battery tray 100 may further include a first one-way stopper plate 1232 and a second one-way stopper plate 1232, the first one-way stopper plate 1222 being provided at the first air inlet hole 1221, the second one-way stopper plate 1232 being provided at the second air inlet hole 1231.

Specifically, the first one-way stopper 1222 is adapted to rotate between a first position and a second position, and when the first one-way stopper 1222 is in the first position, the first one-way stopper 1222 blocks the first air intake hole 1221. When the first one-way stopper 1222 is located at the second position, the first one-way stopper 1222 is located in the gas passage 1210, the first one-way stopper 1222 opens the first gas inlet hole 1221, and the fluid discharged from the first unit explosion-proof valve 304 enters the gas passage 1210 through the first gas inlet hole 1221. That is, the fluid within the gas passage 1210 may drive the first one-way stop plate 1222 to switch from the second position to the first position without further movement of the first one-way stop plate 1222 toward the outside of the gas passage 1210, i.e., without movement of the first one-way stop plate 1222 outside of the gas passage 1210.

The second one-way stop plate 1232 is adapted to rotate between a third position and a fourth position, and when the second one-way stop plate 1232 is in the third position, the second one-way stop plate 1232 obstructs the second air intake holes 1231. When the second one-way stopper 1232 is located at the fourth position, the second one-way stopper 1232 is located in the gas passage 1210, the second one-way stopper 1232 opens the second gas inlet hole 1231, and the fluid discharged from the second one-body explosion-proof valve 305 enters the gas passage 1210 through the second gas inlet hole 1231. That is, the fluid within the gas channel 1210 may drive the second one-way stop 1232 plate to switch from the fourth position to the third position without further moving the second one-way stop 1232 towards the outside of the gas channel 1210, i.e., without the second one-way stop 1232 moving outside of the gas channel 1210.

Further, the first one-way stopper 1222 may be connected to the peripheral wall of the gas passage 1210 by a connection portion 1213, and a portion of the first one-way stopper 1222 remote from the connection portion 1213 has a gap 1214 between the peripheral wall of the first gas inlet hole 1221. Thus, movement of the first one-way stop panel 1222 between a first position and a second position is facilitated. Similarly, the second one-way stopper 1232 may be connected to the peripheral wall of the gas passage 1210 through a connection portion 1213, and a portion of the second one-way stopper 1232 away from the connection portion 1213 has a gap 1214 with the peripheral wall of the second gas intake hole 1231. Thereby, movement of the second one-way stop plate 1232 between the third position and the fourth position is facilitated.

It should be noted that the first one-way stop plate 1222 and the second one-way stop plate 1232 can block fluid in a single direction, for example, when the first battery cell 301 is abnormal, the fluid with high temperature and high pressure can break the first one-way stop plate 1222 and enter the gas channel 1210 through the first air inlet hole 1221, and the first one-way stop plate 1222 can be switched from the first position to the second position.

Due to the increase of the gas pressure in the gas channel 1210, the gas in the gas channel 1210 easily escapes from the gas channel 1210 through other gas inlet holes under the action of the pressure in the gas channel 1210, and by providing the first one-way stopper 1222 that cannot move to the outside of the gas channel 1210, the first one-way stopper 1222 can block the gas flow so that the gas flow cannot pass from the inside of the gas channel 1210 to the outside of the gas channel 1210. Thereby, a fluid of high temperature and high pressure can be confined in the gas channel 1210. Likewise, the second one-way stop plate 1232 is identical in motion to the first one-way stop plate 1222 and will not be described further herein.

According to the battery tray 100 of the battery module 400 of the embodiment of the disclosure, a plurality of battery cells 200 are suitable to be placed in the battery tray 100, each battery cell 200 has a cell explosion-proof valve 201, a gas channel 1210 is provided in the battery tray 100, and a storage bag 150 suitable for containing a phase-change material 151 is provided in the gas channel 1210.

It should be noted that, in the working process of the battery module, if an abnormal condition occurs in a certain single battery, the internal pressure of the single battery 200 increases, so that when the single explosion-proof valve 201 on the single battery is opened, the fluid (for example, fluid with high temperature and high pressure such as flame, smoke, or gas) generated inside the single battery 200 may directly pass through the gas channel, so that the flame, smoke, or gas does not enter the battery tray 100.

It should also be noted that the phase change material 151 may be a cooling liquid, such as clear, colorless, odorless, and insulating liquid environmental fire extinguishing agent, perfluorohexanone. When the monomer explosion-proof valve sprays high-temperature gas and the high-temperature gas enters the lifting channel, the perfluorohexanone liquid with the boiling point of only about fifty degrees can be evaporated, heat can be absorbed in the evaporation process, the evaporation heat is only about 1/25 of water, and the purpose of quickly taking away heat and reducing the temperature is achieved. In addition to the liquid coolant, such as perfluorohexanone, various phase change materials 151 can be selected, which are environmentally friendly materials that undergo a phase change from a final heated state to a gaseous state, have a high latent heat, and a trigger temperature of about 200 ℃.

The battery module 400 according to the embodiment of the present disclosure includes the battery tray 100 and the plurality of battery cells 200 as described above. Specifically, a part of the plurality of battery cells 200 is disposed in the first battery compartment 112, and another part of the plurality of battery cells 200 is disposed in the second battery compartment 113.

According to the battery module 400 of the embodiment of the present disclosure, the storage bag 150 for storing the phase change material is disposed in the gas channel 1210, so that the phase change process of the phase change material 151 can be utilized to absorb heat in the gas channel 1210, thereby rapidly reducing the temperature in the gas channel 1210, avoiding adverse effects on other battery cells 200 due to overhigh heat in the gas channel 1210, protecting other battery cells 200, and further improving the safety of the battery module 400.

According to another aspect of the present disclosure, there is provided a vehicle including the power battery pack as described above.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, various possible combinations will not be separately described in this disclosure.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims

1. A battery tray is characterized in that the battery tray is provided with a containing cabin for containing battery monomers, each battery monomer is provided with a monomer explosion-proof valve, the battery tray comprises a tray main body, a gas channel is formed in at least one part of the tray main body, the tray main body is provided with a plurality of gas inlet holes and at least one exhaust hole, the gas inlet holes and the monomer explosion-proof valves are oppositely arranged and are in one-to-one correspondence, so that flame, smoke or gas exhausted from each monomer explosion-proof valve enters the gas channel through the corresponding gas inlet holes, and the exhaust holes are used for exhausting the flame, smoke or gas in the gas channel; a containing bag is arranged in the gas channel, and a phase change material is arranged in the containing bag;

the tray main body comprises a bottom plate, side beams and a plurality of cross beams, the side beams are arranged on the periphery of the bottom plate and define a containing space of single batteries together with the bottom plate, the cross beams are arranged on the bottom plate and divide the bottom plate into a plurality of areas for containing the single batteries, and at least part of the air inlets are arranged on the cross beams;

the exhaust holes are formed in the edge beam and/or the bottom plate.

2. The battery tray of claim 1, wherein an adhesive layer is disposed between the receiving pocket and the inner wall of the gas channel.

3. The battery tray of claim 2, wherein the adhesive layer is a double-sided adhesive.

4. The battery tray of claim 1, wherein the receiving pocket is a sealed pocket adapted to receive a liquid phase change material.

5. The battery tray of claim 1, wherein a thermally insulating layer is disposed within the pocket.

6. The battery tray of claim 5, wherein the receiving pouch is an aerogel pouch or a ceramic fiber pouch.

7. The battery tray according to claim 1, wherein at least a part of the tray main body is a hollow structure, the hollow structure serving as the gas passage.

8. The battery tray of claim 1, further comprising a battery pack explosion-proof valve, wherein the vent hole is blocked by the battery pack explosion-proof valve.

9. The battery tray of claim 1, further comprising a one-way stop plate disposed at the air inlet aperture,

the one-way stop plate is suitable for rotating between a first position and a second position, and when the one-way stop plate is located at the first position, the one-way stop plate shields the air inlet hole; when the one-way stop plate is located at the second position, the one-way stop plate is located in the gas channel, the gas inlet hole is opened by the one-way stop plate, and fluid discharged by the single explosion-proof valve enters the gas channel through the gas inlet hole.

10. The battery tray according to claim 1, wherein the inside of the cross member and the inside of the side member are formed with gas passages and communicated with each other, the gas inlet hole is provided on the cross member, and the gas outlet hole is provided on the side member.

11. The battery tray according to claim 1, wherein the inside of the cross member and the inside of the bottom plate are formed with gas passages and communicated with each other, the gas inlet hole is provided on the cross member, and the gas outlet hole is provided on the bottom plate.

12. The battery tray according to claim 1, wherein gas passages are formed in the cross member, the side member, and the bottom plate, and the gas passages in the cross member are communicated with the gas passages in the side member, the gas passages in the side member are communicated with the gas passages in the bottom plate, the gas inlet holes are provided in the cross member, and the gas outlet holes are provided in the bottom plate.

13. The battery tray according to claim 1, wherein gas passages are formed in the cross member, the side member and the bottom plate, the gas passages in the cross member are communicated with the gas passages in the bottom plate, the gas passages in the bottom plate are communicated with the gas passages in the side member, the gas inlet holes are formed in the cross member, and the gas outlet holes are formed in the side member.

14. The battery tray according to claim 1, wherein the inside of the cross member and the inside of the side member are formed with gas passages and communicated with each other, a part of the gas inlet holes are provided on the cross member, the other part of the gas inlet holes are provided on the side member, and the gas outlet holes are provided on the side member.

15. The battery tray according to claim 1, wherein the inside of the cross member and the inside of the bottom plate are formed with gas passages and communicated with each other, a part of the gas inlet holes are provided on the cross member, another part of the gas inlet holes are provided on the bottom plate, and the gas outlet holes are provided on the bottom plate.

16. The battery tray according to claim 1, wherein the inside of the cross member, the inside of the side member, and the inside of the bottom plate are formed with gas passages and communicated with each other, a part of the gas inlet holes are provided on the cross member, another part of the gas inlet holes are provided on the side member and/or the bottom plate, and the gas outlet holes are provided on the side member and/or the bottom plate.

17. A battery tray as claimed in any one of claims 10 to 16, wherein the cross member is provided with a first air inlet hole through which fluid discharged from a cell located on one side of the cross member enters the air passage and a second air inlet hole through which fluid discharged from a cell located on the other side of the cross member enters the air passage, at least part of the first air inlet hole and the second air inlet hole being offset from each other.

18. A power battery pack, which is characterized by comprising a plurality of battery cells, a cover plate and the battery tray of any one of claims 1 to 17, wherein the cover plate and the battery tray are hermetically connected and jointly form a closed space for accommodating the battery cells;

each battery monomer is provided with a single explosion-proof valve, the air inlet holes are arranged opposite to the single explosion-proof valves and correspond to the single explosion-proof valves one by one, so that flame, smoke or gas exhausted from each single explosion-proof valve enters the gas channel through the corresponding air inlet holes.

19. A vehicle comprising the power battery pack of claim 18.