CN218513628U - Explosion-proof valve hot air flow protection device and battery pack - Google Patents

Abstract

The application relates to the technical field of batteries, and particularly discloses an explosion-proof valve hot air flow protection device and a battery pack, wherein the protection device comprises a protection cover; the first opening is arranged on the first side of the protective cover; the second opening is arranged at the bottom of the protective cover, and the opening direction of the second opening faces downwards; the guide plate is arranged on the second side of the protective cover, the lower end of the guide plate inclines towards the direction close to the first side, a space is reserved between the lower end of the guide plate and the side edge of the second opening close to the first side to form an air outlet, so that the blasting object of the explosion-proof valve is guided to flow downwards to the air outlet along the inclined direction of the guide plate, and the second side is opposite to the first side. This protector can change the gaseous eruption direction of explosion-proof valve department when electric core thermal runaway, avoids the direction eruption of high temperature flue gas to car door, has avoided high temperature high pressure flue gas to the back row passenger's of fleing scald risk to ensure the passenger's of fleing safety, further improve the security of battery package.

Description

Explosion-proof valve hot air flow protection device and battery pack

Technical Field

The application relates to the technical field of batteries, in particular to an explosion-proof valve hot air flow protection device and a battery pack.

Background

In recent years, the appearance of new energy automobiles plays a great role in promoting social development and environmental protection, and the power battery pack serving as a rechargeable battery is a power source of the new energy automobiles and is widely applied to the field of the new energy automobiles.

Wherein, some side reactions can take place for the battery package under the circumstances such as short circuit, overcharge, and then produce the gas of a certain amount and temperature, can take place the thermal runaway phenomenon after the gas accumulation that produces to a certain extent, and then make the explosion-proof valve of installing on the battery package box erupt high-pressure high temperature gas, carry out the pressure release.

The explosion-proof valve is usually installed at the front end of the upper cover of the battery pack in the prior art, and in a thermal safety test, the problem that the air leakage amount of the explosion-proof valve is smaller than the total air output amount of the battery pack electric core can exist under the influence of the electric core air output amount and the arrangement position of the explosion-proof valve, so that the thermal safety test cannot pass. For solving the problem that the disappointing volume of battery package electric core thermal runaway explosion-proof valve is not enough, the quantity of increasing explosion-proof valve is the mode of often adopting, through the test of thermal safety experiment, when increasing explosion-proof valve and can guarantee that electric core takes place the thermal runaway in battery package box both sides, the battery package is not exploded.

However, referring to fig. 1, the anti-explosion valves on both sides of the conventional battery pack case 1 are located just below the rear door of the vehicle and the injection angle is opposite to the area where the passenger falls, so that when the passenger escapes from the battery pack due to extreme thermal runaway, the passengers are easily burned by high-temperature smoke emitted from the anti-explosion valves on both sides of the battery pack case.

SUMMERY OF THE UTILITY MODEL

Based on this, the utility model provides an explosion-proof valve hot gas flow protector and battery package to the problem that high temperature flue gas directly spouts to the passenger of fleing easily when solving electric core thermal runaway leads to the passenger to be scalded, burn.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

on the one hand, the utility model provides an explosion-proof valve hot gas flow protector sets up on the lateral wall of battery package box and covers and establish on explosion-proof valve, protector includes:

the protection cover is internally provided with a cavity structure;

the first opening is arranged on the first side of the protective cover, and the protective cover covers the explosion-proof valve in the cavity structure through the first opening so that an explosive substance of the explosion-proof valve is collected in the cavity structure;

the second opening is arranged at the bottom of the protective cover, and the opening direction of the second opening faces downwards;

the guide plate is arranged on the second side of the protective cover, the lower end of the guide plate inclines towards the direction close to the first side, a space is reserved between the lower end of the guide plate and the side edge of the second opening close to the first side to form an air outlet, so that the blasting object of the explosion-proof valve is guided to flow downwards to the air outlet along the inclined direction of the guide plate, and the second side is opposite to the first side.

In one embodiment, the protective cover at least comprises an outer side plate positioned on the second side, a top plate positioned on the top and baffle plates positioned on the left side and the right side, the outer side plate, the top plate and the two baffle plates define a first side opening, a bottom opening and a cover body structure with a cavity inside, the upper end of the flow guide plate is connected with the outer side plate, and the lower end of the flow guide plate extends downwards to be flush with the opening.

In one embodiment, both sides of the top plate and the outer side plate extend outwards to form extending parts which exceed the baffle plate, and the extending parts are used for abutting against the battery pack box body.

In one embodiment, the extension part on the top plate and/or the outer side plate is provided with a fixing part used for matching with the battery pack box body.

In one embodiment, the baffle is provided with a limiting structure for limiting and matching with the battery pack box body.

In one embodiment, the limiting structure includes a limiting plate disposed on a side wall of the baffle plate away from the cavity structure, and the limiting plate is configured to abut against the battery pack case.

In one embodiment, the baffle plate comprises an upper plate and a lower plate, the lower plate is offset to the side far away from the cavity structure, so that a horizontal distance is reserved between the lower plate and the upper plate, and the limiting plate is connected between the lower end of the upper plate and the upper end of the lower plate.

In one embodiment, a filter net is arranged in the cavity structure, and the filter net is arranged on a path from the first opening to the second opening.

In one embodiment, the filter screen is obliquely arranged in the cavity structure, the upper end of the filter screen is connected with the outer side plate, and the lower end of the filter screen is connected with the side edge of the second opening, which is close to the first side.

On the other hand, the utility model also provides a battery pack, the power distribution box comprises a box body, be provided with the explosion-proof valve on the box lateral wall, the explosion-proof valve upper shield be equipped with above-mentioned arbitrary embodiment protector.

The beneficial effect of this scheme:

this protector establishes explosion-proof valve cover in the cavity structure through first opening, spouts when making the battery thermal runaway to spout that the valve spun spouts explodes the thing and can all be collected in the cavity structure, has avoided spouting the burning, the explosion scheduling problem that the direct blowout of high temperature inflammable matter in the thing arouses, reduces the thermal runaway risk.

In addition, the guide plate that the slope set up among this protector can be with spouting the downward direction guide of thing along the slope, because guide plate and second opening are formed with the gas outlet between being close to the side of first side again, consequently spout that the thing that explodes that flows along the guide plate finally can flow to gas outlet department and discharge, make and spout the thing and can outwards discharge to whole car body chassis under along the downward direction of slope. This protector can change the gaseous eruption direction of explosion-proof valve department when electric core thermal runaway, avoids high temperature flue gas to the direction eruption of car door, has avoided high temperature high pressure flue gas to the back row passenger's of fleing scald risk to ensure the passenger's of fleing safety, further improve the security of battery package.

Drawings

FIG. 1 is a schematic diagram of the position of an explosion-proof valve on the side of a battery pack case in the prior art;

FIG. 2 is a schematic view of the explosion-proof valve thermal current protection device of the present invention assembled on a battery pack case;

FIG. 3 is a schematic structural view of an embodiment of the thermal airflow protection device of the explosion-proof valve of the present invention;

FIG. 4 is a cross-sectional view of an embodiment of the thermal gas flow protection device of the explosion-proof valve of the present invention;

fig. 5 is a schematic view showing the cooperation of an embodiment of the thermal airflow protection device of the anti-explosion valve of the present invention.

Reference numerals in the drawings of the specification include: the battery pack comprises a battery pack box body 1, a protective cover 2, a first opening 201, an air outlet 202, a guide plate 203, an outer side plate 204, a top plate 205, a baffle plate 206, an upper plate 2061, a lower plate 2062, an extension part 207, a fixing part 208, a limiting plate 209, a filter screen 210 and an explosion-proof valve 3.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It should be noted that the drawings provided in the present embodiment are only for illustrating the basic idea of the invention in a schematic manner, and only the components related to the invention are shown in the drawings rather than being drawn according to the number, shape and size of the components in actual implementation, and the form, quantity and proportion of the components in actual implementation may be changed at will, and the layout of the components may be more complicated.

The structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention does not have the substantial significance in the technology, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy which can be produced by the present invention and the purpose which can be achieved by the present invention.

References in this specification to "upper", "lower", "left", "right", "middle", "longitudinal", "lateral", "horizontal", "inner", "outer", "radial", "circumferential", etc., indicate orientations and positional relationships based on those shown in the drawings, and are for convenience only to simplify the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The explosion-proof valves on two sides of the existing battery pack box body are just positioned below the rear door of an automobile and the injection angle faces to the foot falling area of a passenger, so when the passenger escapes due to extreme thermal runaway of the battery pack, high-temperature smoke sprayed by the explosion-proof valves on two sides of the battery pack box body easily burns the passenger. Based on this, this embodiment provides an explosion-proof valve hot gas flow protector, sets up on the lateral wall of battery package box and covers on explosion-proof valve, can discharge the thing that explodes that spouts of explosion-proof valve to whole car body chassis under, has avoided high temperature high pressure flue gas to the back row risk of scalding of fleing the passenger. The specific scheme is as follows:

a hot air flow protection device of an explosion-proof valve comprises a protection cover and a guide plate, wherein the interior of the protection cover is provided with a cavity structure; the first side of the protective cover is provided with a first opening, and the protective device covers the explosion-proof valve in the cavity structure through the first opening so that the explosive substances of the explosion-proof valve are collected in the cavity structure; the bottom of protection casing is provided with the second opening and the open direction of second opening is down. The guide plate is arranged on the second side of the protective cover, the lower end of the guide plate inclines towards the direction close to the first side, a space is formed between the lower end of the guide plate and the side edge of the second opening close to the first side to form an air outlet, so that an explosive-spraying object of the explosion-proof valve is guided to flow downwards along the guide plate in an inclined mode to the air outlet, and the second side is opposite to the first side.

The utility model discloses above-mentioned embodiment provides a protector establishes explosion-proof valve cover in cavity structure through first opening, spouts when making battery thermal runaway to explode the valve spun and spout the explosive material and can all be collected in cavity structure, has avoided spouting the burning, the explosion scheduling problem that the direct blowout of high temperature inflammable material in the explosive material arouses, reduces the thermal runaway risk.

In addition, the guide plate that the slope set up among this protector can be with spouting the downward direction guide of thing along the slope, because guide plate and second opening are formed with the gas outlet between being close to the side of first side again, consequently spout that the thing that explodes that flows along the guide plate finally can flow to gas outlet department and discharge, make and spout the thing and can outwards discharge to whole car body chassis under along the downward direction of slope. The protection device that this embodiment provided can change the gaseous eruption direction of explosion-proof valve department when electric core thermal runaway, avoids high temperature flue gas to erupt to the direction of car door, has avoided high temperature high pressure flue gas to the back row passenger's of fleing scald risk to ensure the passenger's of fleing safety, further improve the security of battery package.

Embodiments of the present invention and examples thereof are described in detail below with reference to the accompanying drawings.

For convenience of description, the embodiment of the present invention marks the side of the protective cover 2 of fig. 3 and 4 close to the first opening 201 (i.e. close to the battery pack case 1) as an inner side and also as a first side; the side away from the first opening 201 is referred to as the outer side and is also referred to as the second side. It should be noted that the directions of the present invention are relative positions, and the range of the present invention is not limited.

Fig. 3 is a schematic view of an explosion-proof valve thermal airflow protection device according to some embodiments of the present invention. As shown in fig. 3 and 4, the protection device according to at least one embodiment of the present invention includes a protection cover 2 and a flow guide plate 203.

The protection cover 2 may have a square structure, a cylindrical structure, or other irregular structures, for example, the protection cover 2 may have a polygonal prism structure surrounded by a cover plate, a bottom plate, and a plurality of side plates.

Preferably, in the present embodiment, the shield 2 at least includes an outer side plate 204 located at the second side, a top plate 205 located at the top, and baffle plates 206 located at the left and right sides, referring to fig. 3, the outer side plate 204, the top plate 205, and the baffle plates 206 at the left and right sides enclose an inner side opening, a bottom opening, and the shield 2 having a cavity structure inside, where the opening at the inner side of the shield 2 is a first opening 201 of the shield 2, the first opening 201 is an air inlet end of the cavity structure, the opening at the bottom of the shield 2 is a second opening of the shield 2, and the second opening is an air outlet end of the cavity structure.

Of course, in some other embodiments, the shield 2 may further include an inner side plate and a bottom plate, such that the outer side plate 204, the top plate 205, the inner side plate, the bottom plate, and the left and right baffle plates 206 may enclose a square shield 2 structure, in which the inner side plate may be opened to form the first opening 201, and the bottom plate may be opened to form the second opening.

In the protection casing 2 of above-mentioned structure, the size of first opening 201 needs to be greater than the size of explosion-proof valve 3, makes explosion-proof valve 3 can pass first opening 201, and based on this, during this protector during the installation, protector accessible first opening 201 establishes explosion-proof valve 3 cover in the cavity structure to first opening 201 forms the butt cooperation with battery package box 1 when installation protection casing 2, can block up first opening 201 through battery package box 1 lateral wall.

Based on above-mentioned structural design, spout when battery thermal runaway and explode 3 spun and spout that the thing can all be collected in protector's cavity structure, avoided spouting the burning, the explosion scheduling problem that the direct blowout of high temperature inflammable matter in the thing arouses, reduce the thermal runaway risk.

Referring to fig. 2 and 3, in the protective cover 2 with the above structure, the baffles 206 on the left and right sides can limit the flow of the explosive substance in the left and right directions, so as to prevent high-temperature and high-pressure smoke from flowing to the front and rear sides of the cross beam along the hollow channel of the battery pack case 1 and overflowing through the mounting hole, thereby triggering new risks, such as scalding a front vehicle door driver during escaping, and further improving the safety performance.

Referring to fig. 3 and 4, in the present embodiment, the baffle 203 is disposed on the second side of the shield 2, the lower end of the baffle 203 is inclined toward the first side, and a space is provided between the lower end of the baffle 203 and the side of the second opening near the first side to form the air outlet 202, so as to guide the explosive substance of the explosion-proof valve 3 to flow along the baffle 203 to the air outlet 202 in an inclined manner. So, make and spout the thing and can follow the downward direction of slope and outwards discharge to whole car body chassis under, avoid passenger's scald risk.

Referring to fig. 3 and 4, in a specific example, the guide plate 203 is an inclined plate with a higher end and a lower end, wherein the upper end of the guide plate 203 is connected to the outer plate 204, specifically, in this embodiment, the lower end of the outer plate 204 is higher than the lower ends of the two side baffles 206, so that a height difference exists between the lower end of the outer plate 204 and the lower end of the baffle 206, and the upper side of the guide plate 203 is connected to the lower side of the outer plate 204 by welding, so that the outer plate 204 and the guide plate 203 form a smooth transition plate structure, and the blasting substance can flow down to the guide plate 203 along the outer plate 204, and then the guide plate 203 guides the blasting substance in an inclined manner.

Referring to fig. 4, the lower end of the baffle 203 extends downward to be flush with the second opening of the bottom of the shield 2 so that the baffle 203 is disposed to be inclined as a whole. Specifically, referring to fig. 3, corresponding to the oblique baffle 203, in this embodiment, the lower side of the baffle 206 is provided with a bevel edge with a higher end and a lower end, which is adapted to the baffle 203, the upper end of the bevel edge is connected to the lower end of the outer plate 204, and the lower end of the bevel edge is flush with the bottom opening of the shield 2. Based on this, the deflector 203 is installed between the outer panel 204 and the two side baffles 206 along the track of the oblique edge of the baffles 206, so as to form an inclined plate having a guiding function for the blasting object.

In the above embodiment, the outer side plate 204 and the baffle 206 have no part below the deflector 203, and this structural design can simplify the structure of the shield 2 and save the manufacturing material of the shield 2, but it is not limited by this application. For example, in other embodiments, the lower end of the outer side plate 204 and the lower end of the baffle 206 of the shield 2 may also be arranged flush with the lower end of the shield 2, and in this structure, the flow guide plate 203 may be directly and obliquely arranged between the outer side plate 204 and the two side baffles 206, which also has the effect of guiding the explosive.

It is understood that in the present embodiment, the deflector 203 is inclined at an angle of 30 degrees, 45 degrees, 60 degrees, etc., as long as the flow guiding direction of the deflector 203 is inclined toward the lower side of the vehicle body chassis. Preferably, in this embodiment, the inclination angle of the deflector 203 may be 30-60 degrees, so that the deflector 203 has a better guiding direction and a good guiding effect, and the smoothness of the flow guiding of the blasting object can be ensured.

It will be appreciated that in this embodiment, the height of the baffle 203 may be one third, one half or even equal to the height of the shield 2, for example, when the height of the baffle 203 is equal to the height of the shield 2, the baffle 203 may be directly and obliquely arranged in the cavity structure, with the top end connected to the ceiling 205 of the shield 2 and the lower end flush with the bottom end of the shield 2. Referring to fig. 4, in the present embodiment, it is preferable that the height of the baffle 203 is one third to one half of the height of the shield 2, so that the baffle 203 can achieve a better guiding effect.

In other embodiments, the outer plate 204 of the shield 2 may be used as the guide plate 203 to guide the blasting object as a whole, for example, the outer plate 204 may be a tilted plate whose lower end is tilted to be close to the first side, and the tilted outer plate 204 may also be used as the guide plate 203 to guide the blasting object in a tilted manner.

Referring to fig. 1 and 2, a beam is arranged on the outer side of the battery pack case 1, and a mounting groove for accommodating the explosion-proof valve 3 is arranged on the beam, wherein the length of the protective cover 2 is matched with the width of the mounting groove, and the width of the protective cover 2 is matched with the depth of the mounting groove, so that the protective cover 2 can be just mounted in the mounting groove. Referring to fig. 3, in the present embodiment, in order to achieve the quick positioning and assembling of the protection cover 2 and the mounting groove, both sides of the top plate 205 and the outer side plate 204 are extended outward to form an extension 207 beyond the baffle 206, and the extension 207 is used to abut against the battery pack case 1.

Specifically, referring to fig. 2 and 5, when the device is installed, the extending portions 207 formed by extending the two sides of the top plate 205 outwards just abut against the upper surface of the cross beam, so as to longitudinally position the protection device; the extension parts 207 formed by extending outwards from two sides of the outer side plate 204 are just abutted against the outer side walls of the cross beams, so that the horizontal positioning of the protection device is realized. In the structural design, the extending parts 207 on the two sides of the top plate 205 and the outer side plate 204 can realize the accurate positioning of the protective device and the battery pack case 1, so that the positioning and installation of the protective device are facilitated, and the assembly efficiency is improved.

In this embodiment, the extension 207 of the top plate 205 and/or the outer side plate 204 is provided with a fastener 208 for engaging with the shield 2. Specifically, referring to fig. 3, in the present embodiment, it is preferable that the extension 207 of the outer plate 204 is provided with a fixing member 208, and the fixing member 208 may be a bolt. Based on this, after the protection device is positioned in the mounting groove, the extension 207 on the outer side plate 204 and the outer side wall of the cross beam of the battery pack case 1 can be fixed by the fixing member 208, so as to fix the protection device and the battery pack case 1.

In some embodiments, the baffle 206 is also provided with a limiting structure for limiting and matching with the battery pack case 1. The limiting structure comprises a limiting plate 209 arranged on the side wall of the baffle 206 far away from one side of the cavity structure, and the limiting plate 209 is used for abutting against the battery pack box body 1.

Specifically, referring to fig. 3, in this embodiment, the baffle 206 comprises an upper plate 2061 and a lower plate 2062, the lower plate 2062 being offset to the side away from the cavity structure so that there is a horizontal spacing between the lower plate 2062 and the upper plate 2061, and a retainer plate 209 is connected between the lower end of the upper plate 2061 and the upper end of the lower plate 2062.

Wherein the offset of the lower plate 2062 to the side away from the cavity structure is to be understood as the lower plates 2062 at both sides are outwardly translated in the width direction of the shield 2 by a distance such that the distance between the two lower plates 2062 is greater than the width of the mounting groove. Based on this, because the limiting plate 209 is connected between the lower end of the upper plate 2061 and the upper end of the lower plate 2062, when the upper plates 2061 at the two sides of the protection cover 2 are embedded into the mounting groove, the limiting plates 209 at the two sides will be abutted against the bottom wall of the cross beam of the battery pack case 1, and the protection device and the battery pack case 1 are positioned. Referring to fig. 2, the bottom wall of the cross beam of the battery pack case 1 is taken as an example of an inclined surface, and in the present embodiment, the limiting plate 209 is also an inclined plate adapted to the bottom wall of the cross beam.

In other embodiments, the limiting structure can be a limiting plate 209 directly fixed on the baffle 206, and the lower plate 2062 may not be offset.

Referring to fig. 3 and 4, in the present embodiment, the bottom end of the baffle 203 is spaced from the side of the second opening close to the first side, so that the air outlet 202 is formed between the baffle 203 and the side of the second opening close to the first side.

Specifically, referring to fig. 3 and 4, in some embodiments, the bottom of the protection hood 2 is not provided with a bottom plate, and is in an open shape, that is, the open shape is a second opening, in this structure, the lower side of the outer side plate 204 is a left side of the second opening, and the right side of the second opening can be understood as a boundary side where a plane of the first side of the protection hood 2 intersects with a plane of the lower end of the protection hood 2. Based on this, when the protection casing 2 and the battery package box 1 butt, the part that the lower side of guide plate 203, the lower side of both sides baffle 206 and battery package box 1 lateral wall enclose to close is gas outlet 202, makes guide plate 203 directly meet with gas outlet 202 to make guide plate 203 can directly spout the thing that explodes and guide to gas outlet 202 department.

Of course, in other embodiments, the bottom of the protective cover 2 may also be provided with a bottom plate, and the middle or other portion of the bottom plate is opened to form a second opening, in the structural design, the lower side of the flow guide plate 203 may be directly connected to the left side of the second opening, so that the second opening is integrally used as the air outlet 202.

Referring to fig. 3, in the present embodiment, a filter 210 is disposed in the cavity structure, and the filter 210 is disposed on a path from the first opening 201 to the second opening for filtering harmful substances and particles in the blasting object.

Referring to fig. 3, in this embodiment, the both sides of filter screen 210 and baffle 206 butt, the outside and the outer panel 204 butt of filter screen 210, the inboard of filter screen 210 flushes with the inboard of baffle 206, filter screen 210 also can offset with battery package box 1 when making protection casing 2 and battery package box 1 lateral wall butt, on the basis, four sides of filter screen 210 respectively with baffle 206, outer panel 204, battery package box 1 lateral wall combination constitution enclosed construction for the thing that explodes can only be followed gas outlet 202 after must passing through the filtration of filter screen 210 and discharged.

In this embodiment, the filter screen 210 can filter harmful substances, such as toxic heavy metal gas, in the blasting object, so as to avoid environmental pollution; in addition, the filter screen 210 can also filter high-temperature solid particulate matters in the blasting substances, reduce the temperature of hot air flow, and filter solid particles to prevent solid particles from beating the ground and sputtering to the legs of passengers to scald the passengers, so that the safety of the device is further improved. Of course, external dust or impurities are blocked or adsorbed by the filter screen 210, the dust or impurities cannot enter the explosion-proof valve 3 and the battery pack case 1, the battery cannot be affected, and the high pressure generated when the high-temperature high-pressure gas is sprayed out when the battery is in thermal runaway can bring out the adsorbed impurities.

Referring to fig. 3 and 4, in some embodiments, the filter screen 210 is obliquely disposed in the cavity structure, and specifically, the upper end of the filter screen 210 is connected to the outer side plate 204, and the lower end of the filter screen 210 is connected to the side edge of the second opening close to the first side. Due to the structural design, the position of the cavity structure close to the first side has enough space to accommodate the explosion-proof valve 3, so that the position interference between the filter screen 210 and the explosion-proof valve 3 is avoided; in addition, the filter screen 210 arranged obliquely can also enable solid particles to roll along the inclined surface to the bottommost part, so that the blockage caused by the adhesion of the particles on the filter screen 210 is avoided.

On the other hand, this application still discloses a battery package, and it includes the box, is provided with explosion-proof valve 3 on the box lateral wall, and 3 upper hoods of explosion-proof valve are equipped with the protector of above-mentioned any embodiment.

The construction of the battery pack, such as the explosion-proof valve 3, the case, the battery module, etc., is well known to those skilled in the art, and therefore, will not be described in detail herein.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that the technical features of the above embodiments can be arbitrarily combined, and for the sake of simplicity of description, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combinations of the technical features do not contradict each other, the technical features should be considered to be within the scope of the description.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. Explosion-proof valve hot gas flow protector sets up on the lateral wall of battery package box (1) and covers and establish on explosion-proof valve (3), its characterized in that, protector includes:

the protection cover (2), the inside of the protection cover (2) is arranged to be a cavity structure;

the first opening (201) is arranged on the first side of the protective cover (2), and the protective cover (2) covers the explosion-proof valve (3) in the cavity structure through the first opening (201) so that the explosive substances of the explosion-proof valve (3) are collected in the cavity structure;

the second opening is arranged at the bottom of the protective cover (2) and the opening direction of the second opening faces downwards;

the guide plate (203) is arranged on the second side of the protective cover (2), the lower end of the guide plate inclines towards the direction close to the first side, a space is reserved between the lower end of the guide plate (203) and the side edge of the second opening close to the first side to form an air outlet (202), so that an explosive substance of the explosion-proof valve (3) is guided to flow downwards along the guide plate (203) in an inclined mode to the air outlet (202), wherein the second side is opposite to the first side.

2. The explosion proof valve hot gas flow protector of claim 1, characterized in that: the protection casing (2) are including being located the outside board (204) of second side at least, being located roof (205) at the top and being located baffle (206) of the left and right sides, outside board (204) roof (205) and two baffle (206) enclose into the first side and open, bottom opening and inside have the cover body structure of cavity, the upper end of guide plate (203) with outside board (204) meet, the lower extreme downwardly extending of guide plate (203) with the bottom opening parallel and level.

3. The explosion proof valve hot gas flow protector of claim 2, characterized in that: both sides of the top plate (205) and the outer side plate (204) extend outwards to form an extending part (207) exceeding the baffle plate (206), and the extending part (207) is used for abutting against the battery pack box body (1).

4. The explosion proof valve hot gas flow protector of claim 3, characterized in that: and the extension part (207) on the top plate (205) and/or the outer side plate (204) is/are provided with a fixing part (208) used for being matched with the battery pack box body (1).

5. A blast gate hot gas flow guard according to claim 2 or 3, wherein: the baffle (206) is provided with a limiting structure which is used for limiting and matching with the battery pack box body (1).

6. The explosion proof valve hot gas flow protector of claim 5, characterized in that: the limiting structure comprises a limiting plate (209) arranged on the side wall, far away from one side of the cavity structure, of the baffle plate (206), and the limiting plate (209) is used for being abutted to the battery pack box body (1).

7. The explosion proof valve hot gas flow protector of claim 6, wherein: the baffle plate (206) comprises an upper plate (2061) and a lower plate (2062), the lower plate (2062) is deviated to one side far away from the cavity structure, a horizontal distance is reserved between the lower plate (2062) and the upper plate (2061), and the limiting plate (209) is connected between the lower end of the upper plate (2061) and the upper end of the lower plate (2062).

8. The explosion proof valve hot gas flow protector of claim 2, characterized in that: a filter screen (210) is arranged in the cavity structure, and the filter screen (210) is arranged on a path from the first opening (201) to the second opening.

9. The explosion proof valve hot gas flow protector of claim 8, characterized in that: the filter screen (210) slope set up in the cavity structure, filter screen (210) upper end with outer panel (204) meet, the lower extreme of filter screen (210) with the second opening is close to the side of first side meets.

10. The battery package, its characterized in that: the anti-explosion device comprises a box body, wherein an anti-explosion valve (3) is arranged on the side wall of the box body, and a protective device according to any one of claims 1 to 9 is covered on the anti-explosion valve (3).

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