CN218391936U - Fire extinguishing box, battery package and vehicle - Google Patents

Abstract

The utility model discloses a box of putting out a fire, battery package and vehicle, the box of putting out a fire includes: a barrier net; the mounting piece is fixedly connected with the barrier net, and an isolation cavity is formed between the mounting piece and the barrier net; the explosion-proof valve, the explosion-proof valve set up in the installed part is kept away from one side of barrier net. From this, through being connected the installed part with the separation net fixed to make and form the isolation chamber between the two, set up explosion-proof valve in the installed part moreover, when the gas fire stream gets into the box of putting out a fire, can effectively be extinguished, prevent that the high temperature high pressure gas fire stream after the discharge from causing secondary damage to people and article on every side.

Description

Fire extinguishing box, battery package and vehicle

Technical Field

The utility model belongs to the technical field of the vehicle technique and specifically relates to a box, battery package and vehicle extinguish.

Background

In the correlation technique, electric automobile's structural design is unreasonable, even be provided with the box of putting out a fire on the battery, take place thermal runaway at the battery to when producing the high-temperature high-pressure gas fire stream, the box of putting out a fire also can't carry out effective extinction to the high-temperature high-pressure gas fire stream, can reduce electric automobile's security and reliability like this.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a fire extinguishing box, this fire extinguishing box fire extinguishing performance is good.

The utility model also provides a battery package.

The utility model also provides a vehicle.

According to the utility model discloses fire extinguishing box, include: a barrier net; the mounting piece is fixedly connected with the barrier net, and an isolation cavity is formed between the mounting piece and the barrier net; the explosion-proof valve, the explosion-proof valve set up in the installed part is kept away from one side of barrier net.

From this, through being connected the installed part with the separation net fixed to make and form the isolation chamber between the two, set up explosion-proof valve in the installed part moreover, when the gas fire stream gets into the box of putting out a fire, can effectively be extinguished, prevent that the high temperature high pressure gas fire stream after the discharge from causing secondary damage to people and article on every side.

According to some embodiments of the invention, the barrier net comprises: outer installation department and interior separation portion, interior separation portion set up in the inboard of outer installation department just is provided with the through-hole, the installed part set up in outer installation department.

According to the utility model discloses a some embodiments, the through-hole is a plurality of, and is a plurality of the through-hole is in even interval distribution in the interior separation portion, the aperture of through-hole is d, and the value scope of d is: d is more than or equal to 5mm and less than or equal to 7mm.

According to the utility model discloses a some embodiments, the thickness of interior separation portion is L, and L's value range does: d is more than or equal to 5mm and less than or equal to 8mm.

According to some embodiments of the invention, the mounting comprises: first board, second board and connecting portion, connecting portion connect in first board with the second board just the second board orientation the explosion-proof valve protrusion sets up, the second board is provided with dodges the hole, the explosion-proof valve set up in the second board and with it sets up relatively to dodge the hole.

According to some embodiments of the invention, the fire extinguishing box further comprises: sealing gasket and fastener, block the net with the installed part is provided with sealed the pad, the fastener is worn to establish the installed part sealed fill up with block the net and will the installed part sealed fill up with it is fixed that the connection of separation net is fixed.

According to the utility model discloses battery package, include: a housing, the housing comprising: the top plate is arranged at the top of the outer frame, the bottom plate is arranged at the bottom of the outer frame so as to define an accommodating space together with the top plate and the outer frame, an exhaust channel is arranged on the outer frame, and the exhaust channel is communicated with the accommodating space and is provided with an air outlet; the battery module is arranged in the accommodating space; the fire extinguishing box described above, the fire extinguishing box is disposed in the air outlet.

According to some embodiments of the present invention, it is a plurality of the area sum of through-hole is S1, the cross-sectional area of exhaust passage is S2, and the relation of S1 and S2 is: s1 is more than or equal to S2.

According to some embodiments of the invention, the outer frame comprises: the side edge beam and the end beam are oppositely arranged and respectively connected between the end beams, and the side edge beam and/or the end beam are/is provided with the exhaust channel.

According to the utility model discloses a some embodiments, the side roof beam with be provided with the reinforcing plate in the end roof beam, the reinforcing plate will exhaust passage separates into a plurality of interval distribution's sub-exhaust passage.

According to the utility model discloses a some embodiments, the reinforcing plate is at least two and the interval sets up in the up-and-down direction, the side roof beam with the inside wall of end beam is provided with a plurality of air inlets, every sub-exhaust passage all corresponds and is provided with the air inlet.

According to the utility model discloses vehicle, include: the battery pack described above.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is an exploded view of a battery pack according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a bezel according to an embodiment of the present invention;

FIG. 3 is a schematic view of region A of FIG. 2;

fig. 4 is a partial schematic view of a bezel according to an embodiment of the present invention;

fig. 5 is a partial cross-sectional view of a bezel in accordance with an embodiment of the present invention;

fig. 6 is an exploded view of a fire extinguishing box according to an embodiment of the present invention.

Reference numerals:

100-a battery pack;

10-a housing; 11-a top plate; 12-a base plate; 13-outer frame; 131-side edge beam; 1311-air inlet; 132-end beam; 1321-a stiffener; 133- -barrier net; 1331-an external mounting portion; 1332-an inner barrier; 13321-a through hole; 14-a containment space; 141-sub accommodation space;

15-inner spacer beam; 151-diaphragm beam; 152-longitudinal partition beams; 16-an exhaust channel; 161-sub exhaust channel; 17-air outlet; 20-a battery module;

30-a fire extinguishing box; 31-a mounting member; 311-a first plate portion; 312-a second plate portion; 3121-avoiding holes; 313-a connecting portion; 32-an explosion-proof valve; 33-an isolation chamber; 34-a seal pad; 35-fasteners.

Detailed Description

Embodiments of the present invention are described in detail below, and the embodiments described with reference to the drawings are exemplary.

Referring to fig. 1 to 6, a fire extinguishing box 30 according to an embodiment of the present invention will be described, which can be applied to a battery pack 100 and also to a vehicle in which a battery and a vehicle body are integrated.

As shown in fig. 1 and 2, a battery pack 100 according to an embodiment of the present invention may mainly include: the housing 10, the battery module 20 and the fire extinguishing box 30, the housing 10 may mainly include: roof 11, bottom plate 12 and outline 13, roof 11 sets up in the top of outline 13, and bottom plate 12 sets up in the bottom of outline 13 to inject accommodation space 14 jointly with roof 11 and outline 13, be provided with exhaust passage 16 on the outline 13, exhaust passage 16 is linked together with accommodation space 14, and is provided with gas outlet 17, and gas outlet 17 is provided with the barrier net 133, and battery module 20 sets up in accommodation space 14. Specifically, by respectively arranging the top plate 11 and the bottom plate 12 at the top and the bottom of the outer frame 13, the top plate 11 and the bottom plate 12 can jointly define the accommodating space 14, so that not only can the tightness of the accommodating space 14 be ensured, but also the stability and the reliability of the accommodating space 14 can be improved.

Further, with the battery module 20 set up in accommodation space 14, accommodation space 14 can separate battery module 20 from the external environment to can prevent that the erosion of the impact of external force or external foreign matter from damaging battery module 20, cause the damage of battery package 100, can promote the reliability of battery package 100 like this.

As shown in fig. 5, the exhaust channel 16 is disposed on the outer frame 13, so that the exhaust channel 16 is communicated with the accommodating space 14, and thus, high-temperature and high-pressure gas and fire flow generated by thermal runaway of the battery module 20 flows from the accommodating space 14 to the exhaust channel 16, and is exhausted through the air outlet 17 of the exhaust channel 16, so that the original structure of the housing 10 can be fully utilized to exhaust the gas, and the structural design of the battery pack 100 can be simplified to a certain extent on the premise of ensuring stable exhaust.

Further, through set up at gas outlet 17 and separate net 133, separate net 133 can effectively block and reduce the temperature and the impact velocity of gas fire flow, put out the flame that constantly erupts burning in the gas stream to when gas fire flow discharges from gas outlet 17, can guarantee that the state of gas fire flow is stable relatively, can promote battery package 100's stability and reliability like this.

As shown in connection with fig. 6, the fire suppression box 30 may mainly include: a mounting member 31 and an explosion-proof valve 32, the mounting member 31 being provided to the barrier net 133 and forming an isolation chamber 33 with the barrier net 133, the explosion-proof valve 32 being provided to the mounting member 31. Specifically, after the high-temperature and high-pressure fire flows flow out of the blocking net 133, the high-temperature and high-pressure fire flows may enter the isolation cavity 33 formed by the mounting member 31 and the blocking net 133, and the isolation cavity 33 may play a role of turbulence buffering for the high-temperature and high-pressure fire flows, so as to further reduce the speed and the temperature of the high-temperature and high-pressure fire flows. Further, by providing the explosion-proof valve 32 in the mounting member 31, the high-temperature and high-pressure gas and fire flow is substantially extinguished in the isolation chamber 33, the extinguished gas and the unburned gas or solid particles continue to flow to the explosion-proof valve 32, and the extinguished gas and the unburned gas or solid particles are discharged to the outside environment through the explosion-proof valve 32, thereby preventing the battery pack 100 from being exploded and ignited, and thus, the reliability of the battery pack 100 can be further improved.

From this, through set up the installed part 31 in the separation net 133 of gas outlet 17, when battery module 20 takes place the thermal runaway to produce the high-temperature high-pressure gas fire stream, the high-temperature high-pressure gas fire stream will flow to exhaust passage 16, and discharge to the box 30 of putting out a fire from gas outlet 17, is put out a fire by the box 30 of putting out a fire, can promote the reliability of battery package 100 structure like this.

As shown in connection with fig. 6, the barrier net 133 may mainly include: an outer mounting part 1331 and an inner barrier part 1332, the inner barrier part 1332 being disposed inside the outer mounting part 1331 and being provided with a through hole 13321, the inner barrier part 1332 being disposed opposite the air outlet 17, the outer mounting part 1331 being disposed at the outer rim 13, and the mounting part 31 being disposed at the outer mounting part 1331. Specifically, the outer mounting portion 1331 is disposed on the outer frame 13 of the casing 10, so that the barrier net 133 can be mounted on the casing 10, after the outer mounting portion 1331 is disposed on the outer frame 13, the inner barrier portion 1332 is disposed inside the outer mounting portion 1331, and the inner barrier portion 1332 is disposed opposite to the air outlet 17, so that the high-temperature and high-pressure fire flow flowing out from the air outlet 17 can directly flow into the inner barrier portion 1332, and the inner barrier portion 1332 blocks and reduces the temperature and speed of the high-temperature and high-pressure fire flow, which not only makes the structure of the battery pack 100 more compact, but also makes it guide the inner barrier portion 1332 without providing a guide structure after the high-temperature and high-pressure fire flow flows out from the air outlet 17, so that the structural design of the battery pack 100 can be simplified. Further, the thickness of the inner partition 1332 is 5-8mm, within which the exhaust resistance of the gas stream is within a suitable degree.

Further, by forming the through hole 13321 in the inner separation portion 1332, the inner separation portion 1332 can block the high-temperature and high-pressure fire flow and can smoothly flow out of the inner separation portion 1332, so that the pressure inside the fire extinguishing box 30 can be uniform, and the failure of the fire extinguishing box 30 due to the local pressure difference in the fire extinguishing box 30 can be prevented. Specifically, the cross section of the through hole 13321 may be different shapes, such as a circle, an octagon, a hexagon, a pentagon, a quadrangle, a triangle, etc., all of which are considered in this patent, and this patent is illustrated by taking a circle as an example. Further, when the cross section of the through hole 13321 is circular, the aperture of the through hole 13321 is 5-7mm, when the aperture is too small, the pressure of the eruptive airflow may be too concentrated, and when the aperture is too large, the blocking effect on the airflow may be weakened, and the actual size of the aperture needs to be determined by combining the sectional area of the exhaust channel 16, the total number of the cells and the total number of the through holes 13321. The external mounting portion 1331 may be provided on the bottom plate 12, but is not limited thereto. Further, the total area of the openings 13321 of all the inner partitions 1332 connected to the exhaust passage 16 is larger than the sectional area of the exhaust passage 16.

As shown in connection with fig. 6, the mounting member 31 may mainly include: first plate portion 311, second plate portion 312 and connecting portion 313, connecting portion 313 is connected to first plate portion 311 and second plate portion 312, and second plate portion 312 is provided protruding towards explosion-proof valve 32, and second plate portion 312 is provided with dodging hole 3121, and explosion-proof valve 32 is provided in second plate portion 312, and sets up opposite dodging hole 3121. Specifically, the connection portion 313 is connected between the first plate portion 311 and the second plate portion 312, and the connection portion 313 is provided so as to project toward the explosion-proof valve 32, so that a certain distance can be provided between the second plate portion 312 and the outer mounting portion 1331, and the outer mounting portion 1331 of the barrier net 133 and the mounting member 31 can form the isolation chamber 33, so that not only the structural reliability of the mounting member 31 can be improved, but also the structure of the isolation chamber 33 can be simplified, and the reliability of the isolation chamber 33 can be improved.

Further, by providing the escape hole 3121 in the second plate portion 312, the explosion-proof valve 32 is provided in the second plate portion 312 and is disposed opposite to the escape hole 3121, after the gas and fire flow of high temperature and high pressure is substantially extinguished by the blocking mesh 133 and the isolation chamber 33, the extinguished gas and the unburned gas or solid particles may enter the explosion-proof valve 32 through the escape hole 3121 and stably and smoothly flow out of the explosion-proof valve 32, so that the stability and reliability of the explosion-proof valve 32 may be improved.

As shown in connection with fig. 6, the fire suppression box 30 may mainly include: the sealing gasket 34 and the fastener 35, the blocking net 133 and the mounting piece 31 are provided with the sealing gasket 34, and the fastener 35 penetrates through the mounting piece 31, the sealing gasket 34 and the blocking net 133 and is fixed on the outer frame 13. Specifically, gaps inevitably occur in the connection between the mounting member 31 and the blocking net 133 due to process and material limitations, and the sealing gasket 34 can be made to seal the gaps between the mounting member 31 and the blocking net 133 by providing the sealing gasket 34 between the mounting member 31 and the blocking net 133, so that the flow of fire and gas can be prevented from being ejected from the gaps in the connection between the mounting member 31 and the blocking net 133 after entering the insulating chamber 33, which can improve the sealing performance and the structural reliability of the fire extinguishing box 30.

Further, through setting up fastener 35, make fastener 35 wear to establish installed part 31, sealed 34 and separation net 133, not only can promote the stability and the reliability of interconnect between installed part 31, sealed 34 and the separation net 133, but also can make the installation setting of separation net 133 on outer frame 13 more firm. In addition, the mounting member 31, the gasket 34 and the barrier web 133 can be easily removed, thereby facilitating subsequent maintenance.

As shown in fig. 1 and fig. 2, the outer frame 13 may mainly include: side beams 131 and end beams 132, the side beams 131 being disposed opposite to each other and connected between the end beams 132, respectively, the side beams 131 and/or the end beams 132 being provided with the exhaust gas passages 16. Specifically, the side members 131 are disposed opposite to each other and are connected between the end members 132, respectively, so that the side members 131 and the end members 132 define the movement of the battery modules 20 in the accommodating space 14 in the left-right direction and the front-rear direction, respectively, which can further improve the reliability of the side members 131 and the end members 132.

Further, by directly providing the exhaust duct 16 on the side frame 131 and/or the end frame 132, not only can the distance of the high-temperature and high-pressure fire and gas flow generated when the battery module 20 in the accommodating space 14 is thermally out of control be shortened and the exhaust efficiency can be improved, but also the available space on the side frame 131 and/or the end frame 132 can be fully utilized, and no separate exhaust component is required, so that the structural design of the battery pack 100 can be further simplified.

As shown in fig. 5, a reinforcing plate 1321 is disposed inside the side frame 131 and the end frame 132, and the reinforcing plate 1321 divides the exhaust passage 16 into a plurality of sub-exhaust passages 161 distributed at intervals. Specifically, the reinforcing plate 1321 is disposed in the side frame 131 and the end frame 132, so that not only the structural strength of the side frame 131 and the end frame 132 can be improved, but also after the high-temperature and high-pressure gas and fire flows enter the sub-exhaust passages 161, the high-temperature and high-pressure gas and fire flows among the sub-exhaust passages 161 disposed at intervals can be prevented from interfering with each other, and thus the structural reliability and stability of the exhaust passage 16 can be improved.

As shown in fig. 5, at least two reinforcing plates 1321 are provided and spaced apart in the vertical direction, the inner side walls of the side frame 131 and the end frame 132 are provided with a plurality of air inlets 1311, and each sub-exhaust passage 161 is correspondingly provided with an air inlet 1311. Specifically, by providing a plurality of air inlets 1311 on the inner side walls of the side beams 131 and the end beams 132, the high-temperature and high-pressure air fire flow in the accommodating space 14 can be quickly and directly introduced into the exhaust passage 16 through the air inlets 1311, and the exhaust efficiency can be further improved. Further, each sub-exhaust passage 161 is correspondingly provided with an air inlet 1311, so that the high-temperature and high-pressure gas stream flowing into the exhaust passage 16 from the air inlet 1311 can uniformly enter the sub-exhaust passage 161, and the reliability and stability of air inlet of the exhaust passage 16 can be further improved.

With reference to fig. 4 and 5, each sub-exhaust passage 161 is correspondingly provided with a plurality of air inlets 1311, and the air inlets 1311 of the sub-exhaust passages 161 are arranged in a staggered manner in the vertical direction, so that air intake of the exhaust passage 16 is more uniform, pressure in the accommodating space 14 is uniform, local pressure difference in the accommodating space 14 can be prevented, the structure of the accommodating space 14 is unstable, and reliability of the accommodating space 14 can be improved. In addition, the plurality of sub-exhaust passages 161 are arranged in a staggered manner in the vertical direction of the air inlet 1311, so that the high-temperature and high-pressure fire flow can enter the sub-exhaust passages 161 arranged at intervals up and down more stably.

In some embodiments, the housing 10 may also mainly include: the inner partition beam 15, the inner partition beam 15 may also mainly include: the transverse partition beam 151 is transversely arranged in the outer frame 13 to divide the accommodating space 14 into a plurality of sub-accommodating spaces 141, so that the accommodating space 14 can be divided into a plurality of sub-accommodating spaces 141 arranged in the front-rear direction, and a plurality of battery modules 20 can be divided into at least three parts in the front-rear direction, so that the contact heat exchange area between the plurality of battery modules 20 and the inner partition beam 15 can be further increased, the heat exchange performance of the plurality of battery modules 20 can be improved, and when a high-temperature fire occurs in a battery module 20 in a certain sub-accommodating space 141, because the plurality of battery modules 20 are divided into at least three parts, the inner partition beam 15 can separate the sub-accommodating space 141 of the battery module 20 in which the high-temperature fire occurs from the battery modules 20 in other sub-accommodating spaces 141, and the loss can be reduced. In addition, since the at least two inner partition beams 15 divide the accommodating space 14 into the plurality of sub-accommodating spaces 141, the volume of each sub-accommodating space 141 is small, i.e., the number of the battery modules 20 in each sub-accommodating space 141 is small, so that when a fire occurs in one of the sub-accommodating spaces 141, it is possible to further reduce the loss of the plurality of battery modules 20 due to the small volume of the battery modules 20 in this sub-accommodating space 141.

In other embodiments, the inner partition beam 15 includes: the longitudinal beam 152 and the longitudinal beam 152 are longitudinally arranged in the outer frame 13 to divide the accommodating space 14 into a plurality of sub-accommodating spaces 141, so that the accommodating space 14 can be divided into a plurality of sub-accommodating spaces 141 arranged in the left-right direction, and a plurality of battery modules 20 can be divided into at least three parts in the left-right direction, so that the areas of the plurality of battery modules 20 contacting with the inner beam 15 for heat exchange can be further increased, the heat exchange performance of the plurality of battery modules 20 can be improved, and when a high-temperature fire occurs in a battery module 20 in a certain sub-accommodating space 141, the plurality of battery modules 20 are divided into at least three parts, so that the inner beam 15 can separate the sub-accommodating space 141 of the battery module 20 in which the high-temperature fire occurs from the battery modules 20 in other sub-accommodating spaces 141, and the loss can be reduced. In addition, since the at least two inner partition beams 15 divide the accommodating space 14 into the plurality of sub-accommodating spaces 141, the volume of each sub-accommodating space 141 is small, i.e., the number of the battery modules 20 in each sub-accommodating space 141 is small, so that when a fire occurs in one of the sub-accommodating spaces 141, the loss of the plurality of battery modules 20 can be further reduced due to the small volume of the battery modules 20 in the sub-accommodating space 141.

In other embodiments, as shown in fig. 2, the inner partition beam 15 includes: the cross beams 151 and the longitudinal beams 152 are arranged in the outer frame 13 in a crossing manner, so as to divide the accommodating space 14 into a plurality of sub-accommodating spaces 141, so that the accommodating space 14 can be divided into a plurality of sub-accommodating spaces 141 uniformly arranged in the left-right direction and the front-back direction at intervals, and thus the plurality of battery modules 20 can be divided into at least four parts, which not only can further increase the contact heat exchange area between the plurality of battery modules 20 and the inner beam 15, but also can improve the heat exchange performance of the plurality of battery modules 20, and when a high-temperature fire occurs in the battery module 20 in a certain sub-accommodating space 141, because the plurality of battery modules 20 are divided into at least four parts, the inner beam 15 can separate the sub-accommodating space 141 of the battery module 20 in which the high-temperature fire occurs from the battery modules 20 in other sub-accommodating spaces 141, so as to reduce the loss.

In addition, since the at least two inner partition beams 15 divide the accommodating space 14 into the plurality of sub-accommodating spaces 141, the volume of each sub-accommodating space 141 is small, i.e., the number of the battery modules 20 in each sub-accommodating space 141 is small, so that when a fire occurs in one of the sub-accommodating spaces 141, the loss of the plurality of battery modules 20 can be further reduced due to the small volume of the battery modules 20 in the sub-accommodating space 141. It should be noted that, with such an arrangement, on the premise that the number of the inner partition beams 15 is the same, the number of the plurality of sub-accommodation spaces 141 into which the accommodation space 14 is partitioned by the inner partition beams 15 can be increased, so that the volume of the battery module 20 in each sub-accommodation space 141 can be further reduced on the premise that the overall volume of the battery module 20 is fixed.

Further, the number of the inner partition beams 15 and the arrangement manner in the accommodating space 14 can be selectively set according to the specific structure and the specific process requirements of the vehicle, so that the applicability of the inner partition beams 15 can be further improved, and the reliability of the vehicle can be further improved.

It should be noted that, when the inner partition beams 15 are the transverse partition beams 151 and the longitudinal partition beams 152, the number of the transverse partition beams 151 and the number of the longitudinal partition beams 152 may be different, and the number of the transverse partition beams 151 and the number of the longitudinal partition beams 152 may be adjusted according to specific process requirements, so that the variability and flexibility of the installation and the arrangement of the inner partition beams 15 in the accommodating space 14 may be improved, and the applicability of the inner partition beams 15 may be improved.

Further, according to the utility model discloses the vehicle can mainly include: the battery pack 100 is applied to the vehicle, so that the power of the vehicle can be increased, the stability of the vehicle can be guaranteed, and even if the battery module 20 in the battery pack 100 is out of control due to heat, the influence on the driver and passengers on the vehicle and the periphery of the vehicle can be avoided, so that the reliability and the stability of the vehicle can be improved.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (9)

1. The utility model provides a fire extinguishing box, fire extinguishing box installs on exhaust passage's gas outlet, its characterized in that includes:

a barrier net comprising: outer installation department and interior separation portion, interior separation portion set up in the inboard of outer installation department just is provided with the through-hole, the through-hole is a plurality of, and is a plurality of the through-hole is in even interval distribution in the interior separation portion, the aperture of through-hole is d, and the value range of d does: d is more than or equal to 5mm and less than or equal to 7mm, the thickness of the inner blocking part is L, and the value range of L is as follows: d is more than or equal to 5mm and less than or equal to 8mm;

the mounting piece is arranged on the outer mounting part, and an isolation cavity is formed between the mounting piece and the isolation net;

the explosion-proof valve, the explosion-proof valve set up in the installed part is kept away from one side of blocking the net.

2. The fire suppression cartridge of claim 1, wherein the mount comprises: first board, second board and connecting portion, connecting portion connect in first board with the second board just the second board orientation the explosion-proof valve protrusion sets up, the second board is provided with dodges the hole, the explosion-proof valve set up in the second board and with dodge the relative setting in hole.

3. The fire suppression cartridge of claim 1, further comprising: sealing gasket and fastener, block the net with the installed part is provided with sealed the pad, the fastener is worn to establish the installed part sealed fill up with block the net and will the installed part sealed fill up with it is fixed that the connection of separation net is fixed.

4. A battery pack, comprising:

a housing, the housing comprising: the top plate is arranged at the top of the outer frame, the bottom plate is arranged at the bottom of the outer frame so as to define an accommodating space together with the top plate and the outer frame, the outer frame is provided with the exhaust channel, and the exhaust channel is communicated with the accommodating space and provided with the air outlet;

the battery module is arranged in the accommodating space;

a fire extinguishing cartridge as recited in any one of claims 1-3, disposed at the air outlet.

5. The battery pack according to claim 4, wherein the fire extinguishing case is provided with a plurality of through holes, the sum of areas of the plurality of through holes is S1, the cross-sectional area of the exhaust passage is S2, and the relation between S1 and S2 is: s1 is more than or equal to S2.

6. The battery pack of claim 4, wherein the outer frame comprises: the side edge beam and the end beam are oppositely arranged and respectively connected between the end beams, and the side edge beam and/or the end beam are/is provided with the exhaust channel.

7. The battery pack of claim 6, wherein reinforcing plates are disposed within the side beams and the end beams, the reinforcing plates dividing the exhaust channel into a plurality of spaced apart sub-exhaust channels.

8. The battery pack according to claim 7, wherein the reinforcing plates are at least two and are spaced apart in the vertical direction, the side members and the inner side walls of the end members are provided with a plurality of air inlets, and each of the sub-exhaust passages is provided with the air inlet.

9. A vehicle, characterized by comprising: the battery pack of any one of claims 4-8.

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