CN117046006A - Automatic fire extinguishing device for energy storage battery pack - Google Patents

Abstract

The invention discloses an automatic fire extinguishing device for an energy storage battery pack, which comprises a battery shell provided with a battery, wherein a plurality of air guide cylinders provided with air openings are arranged on the battery shell, and blades for controlling the opening and the closing of the air openings are arranged in the air guide cylinders in a circumferential rotating mode. According to the automatic fire extinguishing device for the energy storage battery pack, thermal runaway occurs through the battery, a large amount of hot air expands into the upper cavity, the upper plug cover is driven to drive the shaft rod to move downwards, the shaft is inserted into the clamping piece, the hot air drives the blades to rotate for one sixth of a circle to open the air outlet and discharge and disperse the hot air, the third elastic piece deforms, the fast-discharged and flowing hot air is not easy to flow into the battery shell, when the hot air in the battery shell is reduced, the blades lose the driving force of the hot air and seal the air outlet under the action of the recovery deformation of the third elastic piece, the occurrence of fire sources and combustion air in accumulation of the hot air is effectively reduced, and the condition of combustion explosion of the battery is reduced.

Description

Automatic fire extinguishing device for energy storage battery pack

Technical Field

The invention relates to the technical field of energy storage battery packs, in particular to an automatic fire extinguishing device for an energy storage battery pack.

Background

The energy storage battery is a basic unit for forming an energy storage system, and comprises a lithium battery energy storage pack used on two-wheel and three-wheel electric vehicles, and the lithium battery energy storage pack has the advantages of long service life, high energy ratio, environment friendliness and the like.

According to publication (bulletin) No.: CN115275397a, publication (date): 2022-11-01 discloses an energy storage battery pack with an autonomous fire extinguishing function, which adapts to the impact force of high-temperature fluid under the action of elastic restoring force of an elastic member through a pushing plate and guides the high-temperature fluid to be mixed with sand so as to prevent the battery unit from burning by the sand.

According to publication (bulletin) No.: CN217903209U, publication (date): 2022-11-25 discloses a store fire extinguishing apparatus for energy storage battery, and this scheme can realize accomodating the convenience of battery cluster, can open corresponding drawer type battery box is automatic when the battery cluster is unusual simultaneously for unusual battery package exposes in the clothes closet body outside and in time carries out the local cooling fire extinguishing to unusual battery cluster, avoids normal battery cluster to receive fire extinguishing operation influence, also avoids unusual battery package to continue to stay in the inside battery package that influences other normal of clothes closet body.

In the prior art including the above patent, in general, a lithium battery energy storage pack is formed by connecting a large number of batteries in series or in parallel so as to form a battery pack module, and a large number of battery packs inevitably generate heat during operation, when thermal runaway occurs in a certain battery, the heat in the energy storage battery pack is influenced by each other through the series or in parallel, so that the heat in the energy storage battery pack is extremely diffused, and the condition of large-scale combustion and explosion is caused, and three conditions of combustible materials, combustion supporting materials and fire sources are required during object combustion, when a large amount of heat occurs in the lithium battery pack, the surface of the lithium battery pack bulges, and when the bulges break, a large amount of heat enters the battery shell and is mutually extruded so as to generate more heat, if the heat is not discharged in time, the heat generated by expanding can directly extrude the battery shell from a gap in the battery shell or directly, so that the battery shell is broken, the heat in a large amount exceeds a combustible critical point and the fire source occurs, and the battery is used as the combustible materials to mix oxygen in the outside air into the battery shell, so that the conditions of combustion and explosion are all met, and the condition of the battery pack is caused, and thus the condition of combustion and explosion occurs, after the combustion of the battery pack is greatly, the heat is discharged, and the condition of the battery pack is effectively and the explosion is lost, and the combustion condition is reduced.

Disclosure of Invention

The invention aims to provide an automatic fire extinguishing device for an energy storage battery pack, which solves the problems that when the battery pack is out of control, a large amount of heat generated in the battery pack is extruded in a battery shell, a fire source is generated and leaks into the air, so that oxygen in the air provides combustion-supporting substances and causes the battery to be used as a combustion explosion condition of combustible substances.

In order to achieve the above object, the present invention provides the following technical solutions: an automatic fire extinguishing device for an energy storage battery pack comprises a battery shell provided with a battery, wherein a plurality of air ducts provided with air openings are arranged on the battery shell, and blades for controlling the opening and the closing of the air openings are arranged in the air ducts in a rotating manner in the circumferential direction;

the air duct is internally and movably provided with a shaft lever, a third elastic piece is arranged on the air duct along the axial circumferential direction of the air duct, a clamping piece is arranged at the end part of the third elastic piece, and the shaft lever is used for connecting the blade and the clamping piece, wherein:

the blades close the air inlet in a default state of the third elastic piece;

after the blades rotate for a preset number of turns, the third elastic piece deforms to enable the air port to be opened.

Preferably, the shaft rod moves vertically along with the blade in synchronization, and is matched with the third elastic piece when the shaft rod is in a low position.

Preferably, the air duct is provided with a main partition board in a sliding manner, so that a pressure cavity is formed between the main partition board and the blades;

the device also comprises a main membrane communicated with the pressure cavity, and when the blade rotates, the pressure cavity is extruded to enable gas to enter the main membrane to expand.

Preferably, the air duct is provided with a main air leakage part, and the main film is matched with the main air leakage part.

Preferably, further comprising a suction assembly comprising:

the auxiliary membrane is arranged on the air duct and is communicated with the main membrane;

the hole path frame is arranged on the air duct and provided with a plurality of arc holes;

wherein: the auxiliary membrane is matched with the hole path frame so that the arc hole is communicated with the air duct.

Preferably, the shaft lever is provided with a connecting hole, and in a state that the auxiliary membrane is matched with the hole path frame, the connecting hole is communicated with an air passage formed in the hole path frame.

Preferably, the auxiliary membrane is divided into a gas transmission part, a transfer part and a gas storage part according to the positions, the gas transmission part is matched with the main membrane, and the gas storage part is matched with the hole road frame.

Preferably, the main air leakage piece is movably provided with an auxiliary baffle plate, and the auxiliary baffle plate moves along a preset track along with the reduction of the volume of the main film and finally abuts against the air transmission part.

Preferably, the air duct is movably provided with a driven frame, and the driven frame is hinged with a symmetrically arranged special-shaped support frame;

the special-shaped pushing pieces are symmetrically arranged on the air duct in a circumferential rotation mode, and the special-shaped pushing frames are matched with the special-shaped pushing pieces so that intermittent pushing and matching of the special-shaped pushing pieces and the transfer portion can be kept.

Preferably, the air duct is provided with a plurality of lever plates, and the main partition plate is provided with a plurality of connecting blocks;

the connecting blocks intermittently contact the lever plate, so that the lever plate drives the driven frame to move.

In the technical scheme, the automatic fire extinguishing device for the energy storage battery pack provided by the invention has the following beneficial effects: when thermal runaway occurs through the battery and a large amount of heat leaks into the battery shell, hot air expands and enters the upper cavity, so that the expanded hot air flows into the upper plug cover, the upper plug cover slides downwards in the plug sleeve, the upper plug cover is driven to drive the shaft rod to move downwards, the shaft is enabled to be inserted into the clamping piece in a protruding mode, at the moment, the hot air entering the air inlet from the air inlet drives the blade to rotate along the arc-shaped end part of the blade towards the direction by one sixth of a circle, meanwhile, the third elastic piece is extruded to deform when the clamping piece deflects, the blade is enabled to partially open the air outlet, hot air accumulated in the battery shell is enabled to be rapidly discharged and dispersed from the partially opened air outlet, the situation that heat sources are generated due to mutual extrusion caused by a large amount of hot air in the battery shell is reduced, and the hot air flowing into the battery shell is not easy to be enabled to flow in the battery shell due to the fact that the hot air is rapidly discharged, and when the hot air in the battery shell is reduced, the blade loses the hot air driving force to recover deformation effect, the air outlet is effectively reduced, the entry of fire sources and combustion air are caused by the hot air accumulation and combustion explosion is effectively reduced under the effect of the third elastic piece.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.

Fig. 1 is a schematic view of a battery case structure according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a battery case with a cross-sectional side view and multiple air ducts according to an embodiment of the present application;

FIG. 3 is a schematic diagram of a left side structure of an air duct according to an embodiment of the present application;

FIG. 4 is a schematic view of a cross-sectional structure of a right portion of an air duct according to an embodiment of the present application;

FIG. 5 is a schematic diagram of a cross-sectional structure of a top surface of an air duct according to an embodiment of the present application;

FIG. 6 is a schematic view of a partial cross-sectional configuration of a blade and suction assembly according to an embodiment of the present application;

FIG. 7 is a schematic diagram of a cross-sectional top view structure of a top surface of an air duct according to an embodiment of the present application;

FIG. 8 is a schematic diagram of a cross-sectional structure of a portion of a bottom surface of an air duct according to an embodiment of the present application;

fig. 9 is an enlarged schematic view of the structure at a in fig. 7.

Reference numerals illustrate:

1. A battery case; 11. a battery; 2. an air duct; 21. an air port; 211. an air inlet; 212. an air outlet; 22. an upper chamber; 23. a lower cavity; 24. a main board frame; 241. a support plate; 25. a force frame; 3. a vent assembly; 31. a shaft lever; 311. a shaft boss; 32. a leaf cylinder; 321. a blade; 33. a plug cover is arranged; 331. a first elastic member; 332. a plug sleeve; 333. a main exhaust hole; 34. a main partition; 341. a main sliding protrusion; 342. a driving rod; 343. a second elastic member; 35. pressing a cavity; 36. a main film; 361. a main air release member; 362. discharging the cover; 37. a clip; 371. a slider; 372. a third elastic member; 373. a fan hole; 4. a suction assembly; 41. a secondary membrane; 411. a gas transmission part; 412. a transfer section; 413. a gas storage part; 42. auxiliary plate frame; 421. an auxiliary separator; 422. a fourth elastic member; 423. the arc plate is convex; 424. an elastic clamping piece; 425. a fifth elastic member; 43. a driven frame; 431. a hook plate; 432. a sixth elastic member; 433. a sloping plate; 434. resisting and protruding; 435. a clamping protrusion; 44. a lever plate member; 441. connecting blocks; 45. a connecting rod; 46. a special-shaped support frame; 461. vertical protrusions; 47. a special-shaped stripping piece; 471. arc convex; 472. a seventh elastic member; 473. a touch panel; 48. a hole path frame; 481. an airway; 482. a cavity shell is paired; 483. an auxiliary air inlet hole; 4831. an auxiliary exhaust hole; 484. a lower plug cover; 4841. a plug rod; 4842. a plug body; 485. a connecting hole; 486. and (5) an arc hole.

Detailed Description

In order to make the technical scheme of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.

As shown in fig. 1-9, an automatic fire extinguishing device for an energy storage battery pack comprises a battery shell 1 provided with a battery 11, wherein a plurality of air guide cylinders 2 provided with air inlets 21 are arranged on the battery shell 1, and blades 321 for controlling the opening and the closing of the air inlets 21 are arranged in the air guide cylinders 2 in a circumferential rotation manner;

the air duct 2 is internally and movably provided with a shaft lever 31, a third elastic piece 372 is arranged on the air duct 2 along the axial circumferential direction of the air duct 2, and a clamping piece 37 is arranged at the end part of the third elastic piece 372, and the shaft lever 31 is used for connecting the blade 321 and the clamping piece 37, wherein:

the third elastic member 372 closes the tuyere 21 by the blade 321 in a default state;

after the blades 321 are rotated a predetermined number of times, the third elastic member 372 is deformed to open the tuyere 21.

Specifically, as shown in fig. 1, 2, 3, 4, 5, 6 and 7, a plurality of vertical holes arranged in a linear array are formed in the side wall of the battery case 1, and a plurality of air ducts 2 are fixedly installed in the vertical holes; the air inlet 21 is divided into an air inlet 211 and an air outlet 212 according to the positions, the air inlet 211 is positioned in the battery case 1, and the air outlet 212 is positioned outside the battery case 1.

Further, circular plates which are vertically and symmetrically arranged are fixedly arranged in the air duct 2, the air duct 2 is vertically divided to form two upper cavities 22 and lower cavities 23 with the same size, the air port 21 is arranged between the two circular plates, namely between the upper cavities 22 and the lower cavities 23, and the volumes of the upper cavities 22 and the lower cavities 23 are smaller than the volumes of the air port 21, so that when hot air enters the upper cavities 22 and the air port 21 at the same time, the upper cavities 22 are filled with hot air, and the pressure in the upper cavities 22 is larger than the air port 21.

Still further, the port of the air inlet 211 is fixedly provided with a main board frame 24, the main board frame 24 is fixedly provided with supporting boards 241 which are vertically and symmetrically arranged, the side wall of the air duct 2 is fixedly provided with a force frame 25, and the main board frame 24 and the force frame 25 are both L-shaped.

Still further, the ventilation assembly 3 comprises a blade cylinder 32 movably sleeved on the shaft lever 31, two blades 321 are circumferentially arranged on the side wall of the blade cylinder 32 in an array manner, the ends of the blades 321 are bent to be arc-shaped, the arc-shaped ends are abutted against the inner wall of the air duct 2, and the blades 321 are specifically stainless steel metal plates, so that the blades 321 provide a good sealing effect of the air duct 2; the side wall of the shaft lever 31 is fixedly provided with a shaft boss 311, the shaft boss 311 slides in a strip concave hole formed in the inner wall of the blade cylinder 32, two end parts of the blade 321 are abutted against two circular plates and keep sliding contact, the shaft lever 31 penetrates through the two circular plates to slide, and a concave hole matched with the shaft boss 311 in a sliding manner is formed in the lower circular plate; the lower circular plate is provided with a fan hole 373, the concave hole is communicated with the fan hole 373, after the shaft boss 311 is spliced with the buckling piece 37, the shaft boss 311 does not move downwards any more, and when the shaft rod 31 deflects, the shaft boss 311 cannot move downwards any more, the third elastic piece 372 is fixedly arranged on the side wall of the fan hole 373, the buckling piece 37 slides in the fan hole 373 along the circumferential direction by taking the shaft rod 31 as the axis, an arc-shaped telescopic rod is fixedly arranged between the buckling piece 37 and the fan hole 373, the third elastic piece 372 is annularly arranged outside the arc-shaped telescopic rod, the third elastic piece 372 is a spring, and the third elastic piece 372 enables the two blades 321 and the side wall of the battery case 1 to be positioned on the same straight line in a default state; the snap 37 is fixedly provided with a slider 371, and the slider 371 slides in a fan sliding hole formed in the fan hole 373 to provide stability when the snap 37 slides.

Further, the upper end portion of the shaft lever 31 is fixedly provided with an upper plug cover 33 with an upward opening, a plug sleeve 332 is fixedly arranged on a circular plate above, the upper plug cover 33 slides in the plug sleeve 332, a rubber sealing ring is fixedly sleeved on the side wall of the upper plug cover 33, a first elastic piece 331 is fixedly arranged on the upper inner wall of the air duct 2, the lower end portion of the first elastic piece 331 slides in the upper plug cover 33, and the first elastic piece 331 and the upper plug cover 33 are kept connected, so that when the shaft lever 31 moves downwards, the first elastic piece 331 deforms and is not separated, the first elastic piece 331 is specifically a tension spring, and the first elastic piece 331 enables a boss 311 on the shaft lever 31 to be not connected with the buckle piece 37 in a default state; the upper circular plate is provided with a main exhaust hole 333 and is communicated with the plug sleeve 332 and the air port 21, so that the upper plug cover 33 can exhaust the air in the plug sleeve 332 to the air port 21 in the downward moving process.

The driving source of the shaft 31 in the above embodiment may be an electric push rod, or a motor and a screw rod are matched to drive the shaft to move, or an existing structure or an existing assembly known to those skilled in the art.

When thermal runaway occurs through the battery 11 and a large amount of heat leaks into the battery shell 1, the hot air expands into the upper cavity 22, so that the expanded hot air flows into the upper plug cover 33, the upper plug cover 33 slides downwards in the plug sleeve 332, the upper plug cover 33 is driven to drive the shaft rod 31 to move downwards, the shaft boss 311 is inserted into the clamping piece 37, at the moment, the hot air entering into the air inlet 21 from the air inlet 211 drives the blade 321 to rotate along the arc end part of the blade to a sixth turn towards the direction, meanwhile, the third elastic piece 372 is extruded to deform when the clamping piece 37 deflects, the blade 321 enables the air outlet 212 to be partially opened, so that the accumulated hot air in the battery shell 1 is rapidly discharged and dispersed from the partially opened air outlet 212, the situation that heat sources are generated due to mutual extrusion caused by a large amount of hot air in the battery shell 1 is reduced is realized, the rapidly discharged and the flowing hot air is not easy to flow into the battery shell 1, and when the hot air in the battery shell 1 is reduced, the blade 321 loses the driving force of the hot air to restore 372, the air outlet 212 is effectively reduced under the effect of restoring 372, and the combustion-supporting explosion condition occurs, and the combustion source 11 is reduced.

As a further embodiment of the present invention, the shaft 31 has a vertical movement along with the blade 321, and cooperates with the third elastic member 372 when in the low position.

Specifically, as shown in fig. 4, 6 and 7, the shaft lever 31 has a downward moving purpose when driven by the upper plug cover 33, and the shaft lever 31 is movably assembled to have three stations, the shaft lever 31 at the first station makes the boss 311 on the shaft lever 31 inserted into the blade cylinder 32, and the shaft lever 31 at the second station makes the boss 311 on the shaft lever 31 inserted into the blade cylinder 32 and the fastener 37 at the same time.

Further, the lower end of the first elastic member 331 slides in the upper plug cover 33, and the first elastic member 331 is connected to the upper plug cover 33, and a bidirectional torsion spring is disposed at the sliding position of the lower end of the first elastic member 331 and the upper plug cover 33, so that the blade 321 deflects along the direction of the arc end or deflects along the direction of the arc top of the blade 321 in the first station, and the two blades 321 are in the same straight line with the side wall of the battery case 1 in the default state under the action of the bidirectional torsion spring, and the bidirectional torsion spring is the prior art and is not described herein.

The shaft projection 311 on the shaft lever 31 is not connected with the buckle piece 37 in a default state through the first elastic piece 331, namely, the shaft lever 31 is in a high-position state at this time, the shaft projection 311 on the shaft lever 31 is connected with the blade cylinder 32, so that the blade 321 can rotate independently, at this time, under the condition that no thermal runaway occurs in the battery 11, the air outlet 212 in the outside air can serve as an air inlet function, so that the air quickly flows to the air outlet 212 in the riding process of the electric bicycle or the tricycle and is fed into the battery shell 1 through the air inlet 211, and meanwhile, the outside air acts on the blade 321, so that the blade 321 deflects along the arc top direction of the blade 321 and is accompanied by the deformation of the bidirectional torsion spring, so that when the vehicle is parked, the bidirectional torsion spring recovers the deformation and extracts and discharges the air in the battery shell 1, thereby reducing the heat generated when the battery 11 works, cooling the battery 11 in the running process of the vehicle, and reducing the overheat condition when the battery 11 works.

The driving source of the blade 321 in the above embodiment may be a motor.

As a further embodiment of the present invention, the air duct 2 is slidably provided with a main partition 34, so that a pressure cavity 35 is formed between the main partition 34 and the blades 321;

a main membrane 36 is also included in communication with the plenum 35 and expands as the vanes 321 rotate to squeeze the plenum 35 into the main membrane 36.

Specifically, as shown in fig. 2, 6 and 7, the main board frame 24 is provided with a through hole, the main partition board 34 slides in the through hole and extends out of the main board frame 24, the end portion of the main partition board 34 is fixedly provided with main sliding protrusions 341 which are symmetrically arranged, the main sliding protrusions 341 slide in a chute provided on the through hole, the main sliding protrusions 341 are fixedly provided with a plurality of driving rods 342, the driving rods 342 slide along the direction of the chute and extend out of the main board frame 24, a plurality of second elastic members 343 are fixedly arranged between the main sliding protrusions 341 and the chute, the second elastic members 343 are annularly arranged outside the driving rods 342, and the second elastic members 343 are specifically tension springs, so that the main partition board 34 is far away from the shaft lever 31 in a default state.

Further, an arc groove is formed in the side wall of the blade cylinder 32 so that the main partition 34 keeps sliding in the arc groove, and a rubber sealing gasket is fixedly arranged at the end part of the main partition 34 so that the rubber sealing gasket provides a sealing effect of the main partition 34 on the pressing cavity 35 during sliding; the side wall of the air duct 2 is provided with a hole, the side wall of the air duct 2 is fixedly provided with a main film 36, and the hole is respectively communicated with the main film 36 and the pressure cavity 35; the main film 36 is specifically a heat-resistant rubber film, which is a prior art and will not be described herein.

When thermal runaway occurs through the battery 11 and a large amount of heat leaks into the battery case 1, hot air enters the main board frame 24 from the through holes, drives the main partition board 34 to slide in the through holes and extend out of the main board frame 24, and simultaneously enables the end part of the main partition board 34 to be abutted against an arc groove formed on the side wall of the blade cylinder 32, so that the hot air expanding in the battery case 1 is stored in the pressure cavity 35 before the main partition board 34 is matched with the blade 321 to form the pressure cavity 35; when the blades 321 rotate, the single blade 321 presses the pressing cavity 35 and conveys the hot air in the pressing cavity 35 into the main film 36, so that the main film 36 can store additional hot air, and the burden of suddenly discharging the hot air from the air outlet 212 is reduced; the expanded main film 36 occupies the internal space of the battery case 1 to accelerate the flow rate of the hot air flowing to the air inlet 211, so that the hot air is not easy to cause backflow of the external air when being discharged through the air outlet 212.

The driving source of the main partition 34 in the above embodiment may be an electric push rod, or a motor and a screw rod are matched to drive the main partition to move, or an existing structure or an existing assembly known to those skilled in the art.

As a further embodiment of the present invention, the air duct 2 is provided with a main air release member 361, and the main membrane 36 is matched with the main air release member 361.

Specifically, as shown in fig. 4, 6 and 7, the main air release member 361 is fixedly installed on the main film 36, and the main air release member 361 is similar to the air release of the tire, the main air release member 361 and the air release manner thereof are in the prior art, and are not described in detail herein, and the main film 36 maintains the sealing state after the air release is completed, so that the main film 36 is convenient for performing the next expansion work; the force frame 25 is fixedly provided with a release cover 362, and the release cover 362 is annularly arranged outside the main release member 361; the main membrane 36 expands and deforms within the cavity formed between the main plate frame 24 and the force frame 25 and provides a guiding function to the cavity.

In the process of rotating the blades 321, the single blade 321 is used for extruding the pressing cavity 35 and conveying hot air in the pressing cavity 35 into the main film 36, so that the main film 36 expands and deforms to enable the main air release member 361 on the main film 36 to be close to the air release cover 362, the trigger member arranged in the air release cover 362 is used for triggering air release operation on the main air release member 361, and additional hot air stored in the main film 36 enters the battery case 1 again along the inner wall of the air release cover 362 and is discharged out of the battery case 1, so that the influence on the battery 11 caused by residual hot air in the battery case 1 is reduced.

Secondly, when the main film 36 completely leaks the hot air, the main film 36 is in a shrunken state, and when the hot air in the battery case 1 is reduced, the hot air entering from the air inlet 211 is reduced, so that the blade 321 loses the driving force of the hot air and closes the air outlet 212 under the action of the recovery deformation of the third elastic piece 372, meanwhile, the hot air entering into the through hole on the main board frame 24 is reduced, so that the main partition board 34 is far away from the blade cylinder 32 under the action of the recovery deformation of the second elastic piece 343, and the shrunken pressure cavity 35 is in urgent need of air under the action of the shrunken main film 36, so that when the blade 321 is recovered to the default position, the redundant hot air in the battery case 1 is additionally extracted by the pressure cavity 35 and the main film 36, and the potential danger caused by the hot air around the battery 11 is additionally reduced.

The driving source of the main air leakage member 361 in the above embodiment may be an electric push rod, or a motor and a screw rod are matched to drive the main air leakage member 361 to move, or any existing structure or existing assembly known to those skilled in the art may be adopted.

As a further embodiment of the present invention, there is also provided a suction assembly 4 comprising:

a sub-membrane 41 provided on the air duct 2, the sub-membrane 41 being communicated with the main membrane 36;

a hole path frame 48 which is arranged on the air duct 2 and provided with a plurality of arc holes 486;

wherein: the secondary membrane 41 and the orifice frame 48 cooperate to communicate the arcuate bores 486 to the barrel 2.

Specifically, as shown in fig. 3, 4, 5, 6, 7, 8 and 9, the auxiliary film 41 is fixedly installed between the two support plates 241, the hole path frame 48 is fixedly installed in the air duct 2 and is located in the lower cavity 23, the lower cavity 23 is filled with hot air entering from the battery case 1, and the side wall of the air duct 2 is fixedly installed with a guide cover with a table-shaped section, so that the auxiliary film 41 enters the guide cover after being expanded, and the auxiliary film 41 entering the guide cover is communicated with the hole path frame 48.

Further, the included angle between the arc hole 486 and the hole path frame 48 is specifically 30 °, and the included angle faces the outside of the battery case 1, so that the hole path frame 48 forms a negative pressure when hot air circulates, the arc hole 486 pumps the hot air in the lower cavity 23 to mix with the hot air circulating in the hole path frame 48, and the mixed hot air is discharged out of the battery case 1 rapidly.

The blades 321 rotate to enable the single blades 321 to squeeze the pressing cavity 35 and convey hot air in the pressing cavity 35 into the main film 36, so that part of the hot air enters the auxiliary film 41 in the expansion process of the main film 36, and is accumulated in the auxiliary film 41 step by step in the repeated expansion and shrinkage process of the main film 36, so that the auxiliary film 41 expands to enter the guide cover, and then the auxiliary film 41 is deflated, so that the hot air flowing in the hole frame 48 is enabled to be additionally extracted from the lower cavity 23 under the action of the plurality of arc holes 486, thereby effectively reducing the additional hot air in the battery case 1, reducing the situation that the battery 11 is out of thermal control for a long time and still discharges the hot air into the battery case 1, and enabling the part of the hot air to be accumulated in a large amount.

The air supply source of the sub-film 41 in the above embodiment may be a small blower.

As still another embodiment of the present invention, the shaft 31 is provided with a connecting hole 485, and the connecting hole 485 is in communication with the air passage 481 provided on the hole frame 48 in a state that the auxiliary membrane 41 is matched with the hole frame 48.

Specifically, as shown in fig. 3, 4, 5, 6, 7, 8 and 9, the opposite cavity 482 is fixedly installed at the bottom of the hole path frame 48, the lower plug cover 484 is fixedly installed at the bottom of the shaft rod 31, the lower plug cover 484 slides in the opposite cavity 482, a rubber sealing ring is fixedly sleeved on the side wall of the lower plug cover 484, an auxiliary air inlet 483 is formed on the hole path frame 48, the auxiliary air inlet 483 is communicated with the air passage 481, and an auxiliary air outlet 4831 is formed at the bottom of the opposite cavity 482.

Further, a plug rod 4841 is fixedly installed on the side wall of the lower plug cover 484, a plurality of plug bodies 4842 are fixedly installed on the plug rod 4841, and the plug bodies 4842 in a default state are used for blocking the arc holes 486; the auxiliary air release member is fixedly mounted on the auxiliary film 41, and has the same function as the main air release member 361, and the triggering member is fixedly mounted in the air passage 481, and the auxiliary film 41 which is expanded and enters into the air passage 481 along the guide cover is enabled to make the auxiliary air release member on the auxiliary film 41 touch and release by the triggering member, and the triggering member has the same function as the triggering member arranged in the air release cover 362.

Part of the hot air enters the auxiliary film 41 through the main film 36 in the expansion process, and is gradually accumulated in the auxiliary film 41 in the process of repeatedly expanding and shrinking the main film 36, so that the auxiliary film 41 expands into the guide cover, when the auxiliary air release piece on the auxiliary film 41 touches the triggering piece in the air passage 481, air starts to release, so that the hot air enters the opposite cavity shell 482 from the air passage 481 through the auxiliary air inlet holes 483, the lower plug cover 484 in the opposite cavity shell 482 moves downwards, the lower plug cover 484 extrudes the air below the opposite cavity shell 482 into the lower cavity 23 from the auxiliary air outlet holes 4831, simultaneously, the lower plug cover 484 drives the shaft rod 31 to move downwards continuously and perform the work of the third station, so that the connecting hole 485 on the shaft rod 31 communicates the other side of the air passage 481, the hot gas flowing in the air passage 481 from the auxiliary film 41 is discharged out of the battery case 1 rapidly, the plug rod 4841 drives the plug body 4842 to move downwards in the downward moving process of the lower plug cover 484, so that the plug body 4842 opens the arc hole 486, the hot gas flowing in the air passage 481 rapidly causes negative pressure in the arc hole 486, the hot gas in the lower cavity 23 is extracted and mixed, and meanwhile, the redundant hot gas in the battery case 1 enters the lower cavity 23 again and is used for supplementing the lost hot gas, so that the extra hot gas generated by the battery 11 in the battery case 1 under the action of long-time thermal runaway can be discharged out of the battery case 1 rapidly, and the condition that the hot gas is mutually extruded and burnt by the battery 11 in the battery case 1 is effectively reduced.

Secondly, after the hot air in the auxiliary film 41 is exhausted out of a plurality of times, the lower plug cover 484 which is not driven by hot air extrusion moves upwards under the action of the recovery deformation of the first elastic piece 331, and the lower plug cover 484 plugs the arc holes 486 again by the plug body 4842 under the action of the plug rod 4841, so that the condition that the external air enters the battery case 1 is reduced; and the shaft rod 31 positioned in front of the third station makes the connecting hole 485 on the shaft rod 31 positioned in the lower circular plate, and after the lower plug cover 484 moves upwards, the connecting hole 485 returns to the lower circular plate again, so that the shaft rod 31 seals the air passage 481 again, and external air is not easy to enter the lower cavity 23.

The driving source of the lower plug 484 in the above embodiment may be an electric push rod, or a motor and a screw rod to drive the lower plug 484, or an existing structure or an existing assembly known to those skilled in the art.

As still another embodiment further provided by the present invention, the sub-film 41 is divided into a gas transmission part 411, a transfer part 412 and a gas storage part 413 according to positions, the gas transmission part 411 being matched with the main film 36, the gas storage part 413 being matched with the orifice frame 48.

Specifically, as shown in fig. 5, 6, 7 and 9, the air delivery portion 411 is connected to the main membrane 36, and the bottom of the air storage portion 413 enters the air channel 481 on the hole frame 48 along the guide cover after being expanded, and the transfer portion 412 is located on one side of the L-shaped main plate frame 24.

Further, the transfer portion 412 is provided with a plurality of holes, so that the driving rod 342 can pass through the holes for movement, and the air transportation operation of the transfer portion 412 is not affected.

The single blade 321 is used for extruding the pressing cavity 35 in the rotating process of the blade 321, and conveying hot air in the pressing cavity 35 into the main film 36, so that part of the hot air enters the auxiliary film 41 in the expanding process of the main film 36, firstly enters the air conveying part 411 and is buffered in the transit part 412, and finally is gradually sent into the air storage part 413, so that the condition that the hot air leaks into the battery case 1 again in the conveying process of multiple sections of hot air can be effectively reduced, the expanded air storage part 413 is close to the air inlet 211, but the air inlet 211 is not closed, the gap around the air inlet 211 is reduced, the flow speed of the air inlet 211 in the discharging process of the hot air in the battery case 1 is faster, and the entering of external air from the air outlet 212 is reduced.

As still another embodiment of the present invention, the main air release member 361 is movably provided with a sub-partition 421, and the sub-partition 421 moves along a predetermined trajectory as the volume of the main film 36 decreases, and finally abuts against the air delivery portion 411.

Specifically, as shown in fig. 4, 7 and 9, the side wall of the release cover 362 is hinged with the auxiliary plate frame 42, and a torsion spring is arranged at the hinged position, so that the end part of the auxiliary plate frame 42 approaches the main plate frame 24 in a default state, the auxiliary plate frame 42 is also provided with a through hole, the through hole is communicated with the release cover 362, and the auxiliary partition 421 slides in the through hole, so that the auxiliary partition 421 is used as the main partition 34; the auxiliary baffle 421 is fixedly provided with auxiliary sliding protrusions which are symmetrically arranged, the auxiliary sliding protrusions slide in the sliding grooves formed in the through holes, the guide rods are fixedly arranged in the sliding grooves, the guide rods penetrate through the auxiliary sliding protrusions so that the auxiliary sliding protrusions slide on the guide rods, meanwhile, fourth elastic pieces 422 are fixedly arranged between the auxiliary sliding protrusions and the sliding grooves, the fourth elastic pieces 422 are annularly arranged on the outer sides of the guide rods, the fourth elastic pieces 422 are specifically tension springs, and the fourth elastic pieces 422 enable the auxiliary baffle 421 to be contained in the through holes in the auxiliary baffle 42 in a default state.

Further, the end of the auxiliary partition 421 is fixedly provided with an arc plate protrusion 423, and the arc plate protrusion 423 is specifically an arc stainless steel metal plate, so that the arc plate protrusion 423 can deform when being abutted against the gas transmission part 411, and can additionally abut against the gas transmission part 411 under the action of elastic potential energy.

The blade 321 rotates to enable the single blade 321 to extrude the pressing cavity 35 and convey hot air in the pressing cavity 35 into the main film 36, so that part of hot air enters the auxiliary film 41 in the expansion process of the main film 36, the hot air firstly enters the air conveying part 411 and then enters the transferring part 412, and simultaneously the main film 36 expands and deforms to enable the main air release part 361 on the main film 36 to be close to the air release cover 362, so that a trigger part arranged in the air release cover 362 triggers the air release work on the main air release part 361, additional hot air stored in the main film 36 enters the battery case 1 again along the inner wall of the air release cover 362, part of hot air flowing to the air release cover 362 enters from the perforations on the auxiliary film frame 42, so that the perforated hot air extrudes the auxiliary partition 421 to extend out of the auxiliary film frame 42, and simultaneously accompanies the deformation of the fourth elastic part 422, so that the auxiliary partition board 423 pushes the arc plate 421 at the end part onto the air conveying part 411 and abuts against the main film frame 24, and accordingly the main film 36 is enabled to be released, and simultaneously the main film 411 is enabled to directly perform air release work on the main film 36 to the main film frame 36, the air release work is not required, and the auxiliary film 36 is directly required to be released into the main film 41, and the air release work is reduced, and the auxiliary film 41 is directly stored in the main film 41, and the auxiliary film 41 is replaced in the air film 41.

The driving source of the secondary partition 421 in the above embodiment may be an electric push rod, or a motor and a screw rod to drive the secondary partition 421 to move, or any structure or assembly known to those skilled in the art.

As a further embodiment of the invention, the air duct 2 is movably provided with a driven frame 43, and the driven frame 43 is hinged with a symmetrical special-shaped support frame 46;

the air duct 2 is provided with a symmetrical special-shaped scraping piece 47 in a circumferential rotation mode, and the special-shaped supporting frame 46 is matched with the special-shaped scraping piece 47 so that the special-shaped scraping piece 47 is in intermittent abutting matching with the transfer part 412.

Specifically, as shown in fig. 3, 4, 5, 6, 7 and 9, the driven frame 43 is fixedly provided with symmetrically arranged hook plates 431, the hook plates 431 are provided with hook protrusions, so that the hook plates 431 are L-shaped, a plurality of sixth elastic members 432 are fixedly arranged between the hook protrusions and the force frame 25, the sixth elastic members 432 are springs, the sixth elastic members 432 are close to the main frame 24 in a default state, a plurality of guiding telescopic rods are fixedly arranged between the hook protrusions and the force frame 25, and the sixth elastic members 432 are annularly arranged outside the guiding telescopic rods.

Further, a plurality of connecting rods 45 which are symmetrically arranged front and back are hinged on the driven frame 43, the connecting rods 45 penetrate through one end of the main plate frame 24 to slide, a special-shaped supporting frame 46 is hinged at the end part of the connecting rods 45, a plurality of sliding blocks are fixedly arranged at the upper end part and the lower end part of the special-shaped supporting frame 46, and the sliding blocks slide in sliding ways formed in the support plates 241; the special-shaped support 46 is fixedly provided with vertical protrusions 461 which are symmetrically arranged left and right so that the cross section of the special-shaped support 46 is C-shaped.

Still further, the cross section of the special-shaped scraping piece 47 is in a shape of W, the special-shaped scraping piece 47 is provided with arc protrusions 471 which are arranged symmetrically left and right and oblique sides which are arranged symmetrically left and right, one of the two arc protrusions 471 keeps abutting against the transfer part 412, and an opening of the special-shaped scraping piece 47 is formed between the two oblique sides; the middle part of the special-shaped scraper 47 is provided with a rotating rod, and the rotating rod circumferentially rotates on the support plate 241.

Further, the supporting plate 241 is fixedly provided with a touch plate 473 which is arranged symmetrically in front and back, and the touch plate 473 is provided with inclined surfaces which are arranged symmetrically in left and right; the seventh elastic pieces 472 which are symmetrically arranged left and right are fixedly arranged on the single special-shaped scraping piece 47, the end parts of the two seventh elastic pieces 472 are propped against the inclined surface on the touch plate 473 in a default state, and the seventh elastic pieces 472 are specifically springs; when one of the vertical protrusions 461 on the special-shaped support 46 is abutted against the same side inclined edge on the special-shaped scraping piece 47 and slides towards the position of the rotating rod, the length of the vertical protrusion 461 is fixed, so that the opening on the special-shaped scraping piece 47 deflects towards a position far away from the abutting position of the vertical protrusion 461 under the condition that the same distance is kept between the inclined edge and the vertical protrusion 461, and the seventh elastic piece 472 on the side deforms when abutting against the inclined surface on the contact plate 473.

In the process of translating the driven frame 43 left and right, the connecting rod 45 pulls/pushes the special-shaped supporting frame 46, so that two vertical protrusions 461 on the special-shaped supporting frame 46 are respectively abutted against two bevel edges on the special-shaped scraping piece 47, and the process of approaching to the position of the rotating rod is carried out, so that the opening orientation of the special-shaped scraping piece 47 is intermittently changed.

Secondly, when the arc protrusions 471 which are symmetrically arranged at the front and back and are close to each other and are abutted against the film on the middle rotating part 412 on the two special-shaped pushing pieces 47 close to the gas storage part 413, the middle rotating part 412 and the gas storage part 413 are sealed, so that the hot gas entering the middle rotating part 412 from the gas transmission part 411 is stored in the middle rotating part 412, and the hot gas stored in the gas storage part 413 can not flow back and forth into the middle rotating part 412; when the two special-shaped pushing pieces 47 far away from the gas storage portion 413 and the arc-shaped protrusions 471 symmetrically arranged front and back are mutually close to each other and are abutted against the membrane on the middle rotating portion 412, the gas transmission portion 411 and the middle rotating portion 412 are closed, so that the hot gas originally stored in the middle rotating portion 412 enters the gas storage portion 413 at the moment, and the gas transmission portion 411 cannot cause gas leakage to the middle rotating portion 412 and the gas storage portion 413; when the air storage portion 413 stores hot air, the arc protrusions 471 of the two special-shaped pushing pieces 47, which are symmetrically arranged front and back, are close to each other again and abut against the film of the transfer portion 412 near the air storage portion 413, so that the air storage portion 413 after one air storage operation is closed, and the operation is repeated, so that the hot air sent into the air transmission portion 411 from the main film 36 continuously enters the air storage portion 413, and the air storage portion 413 continuously expands and enters the hole path frame 48 along the guide cover to drive the third station.

The driving source of the driven frame 43 in the above embodiment may be an electric push rod, or a motor and a screw rod are matched to drive the driven frame to move, or any existing structure or existing assembly known to those skilled in the art may be adopted.

As a further embodiment of the present invention, the air duct 2 is provided with a plurality of lever plates 44, and the main partition 34 is provided with a plurality of connecting blocks 441;

the link 441 intermittently contacts the lever plate 44, so that the lever plate 44 drives the driven frame 43 to move.

Specifically, as shown in fig. 3, 4, 5, 6, 7 and 9, the force frame 25 is fixedly provided with a plurality of lever frames, the lever plate 44 is hinged on the lever frames, one end of the lever plate 44 is abutted against the hook protrusion in a default state, and the lever plate 44 is in a labor-saving state; the driving rod 342 is fixedly provided with a connecting block 441.

Further, a sloping plate 433 is fixedly installed on one side of the driven frame 43, and a supporting protrusion 434 is fixedly installed on the end of the sloping plate 433, so that the supporting protrusion 434 is used for supporting the gas conveying part 411, and the gas conveying part 411 is supported on the main board frame 24, and a plurality of clamping protrusions 435 are fixedly installed on the supporting protrusion 434; the auxiliary partition plate 421 and the arc plate boss 423 are provided with a chute, an arc guide rod is fixedly arranged in the chute, an elastic clamping piece 424 is sleeved on the arc guide rod in a sliding manner, a fifth elastic piece 425 is fixedly arranged between the elastic clamping piece 424 and the chute, the fifth elastic piece 425 is annularly arranged on the outer side of the arc guide rod, and the fifth elastic piece 425 enables the elastic clamping piece 424 to be close to the auxiliary plate frame 42 in a default state; the snap 435 and the resilient clip 424 are snap fit.

Still further, when part of the hot air flowing to the release cover 362 enters from the through hole on the sub-frame 42, so that the hot air passing through the through hole presses the sub-partition 421 to extend out of the sub-frame 42, so that the sub-partition 421 pushes the arc plate boss 423 at the end against the air conveying portion 411 and pushes the air conveying portion 411 against the main-frame 24, at this time, the driven frame 43 is far away from the main-frame 24, and the elastic clamping member 424 and the clamping boss 435 on the sub-partition 421 are clamped and assembled, and meanwhile, the sub-frame 42 with the torsion spring is slightly sprung and deflected along with the hinge connection, and returns to the position before the torsion spring is deformed after the elastic clamping member 424 and the clamping boss 435 are clamped and assembled, and meanwhile, the sub-partition 421 still abuts against the air conveying portion 411.

When thermal runaway occurs through the battery 11 and a large amount of heat leaks into the battery case 1, hot air enters the main board frame 24 from the through holes and drives the main partition board 34 to slide in the through holes and extend out of the main board frame 24, so that a plurality of driving rods 342 on the main partition board 34 slide on the main board frame 24, and meanwhile, the driving rods 342 are accompanied by connecting blocks 441 which are arranged on the driving rods 342 and are close to the main board frame 24, so that the connecting blocks 441 are abutted against one end of the lever board piece 44, the other end of the lever board piece 44 is abutted against the hooking protrusion, the driven board frame 43 is far away from the main board frame 24 under the action of lever principle by the lever board piece 44, and meanwhile, the driven board frame 43 and the main partition board 34 are deformed along with the sixth elastic piece 432, so that reverse movement of the driven board frame 43 and the main partition board 34 is kept.

Secondly, when the hot air in the battery case 1 decreases, the hot air entering from the air inlet 211 decreases, so that the blade 321 loses the driving force of the hot air and closes the air outlet 212 under the action of the restoring deformation of the third elastic member 372, meanwhile, the hot air entering into the through hole on the main board frame 24 decreases, so that the main partition 34 is far away from the blade cylinder 32 under the action of the restoring deformation of the second elastic member 343, meanwhile, the driving rod 342 drives the connecting block 441 to separate from the lever plate 44, so that the driven frame 43 closes the main board frame 24 under the action of the restoring deformation of the sixth elastic member 432, at this time, the abutting protrusion 434 on the sloping board 433 closes the air conveying part 411, and meanwhile, the clamping protrusion 435 pushes the elastic clamping member 424 to slide in the sliding groove, when the other end of the sliding groove, namely the end of the arc-gathering plate protrusion 423, is reached, the abutting protrusion 434 on the sloping plate 433 is used for abutting the arc-gathering plate protrusion 423 on the gas conveying part 411, at the moment, the driven frame 43 continues to gather the main plate frame 24 at one point, so that the clamping protrusion 435 on the abutting protrusion 434 is continuously stressed and separated from the elastic clamping piece 424, the hinged auxiliary plate frame 42 slightly bounces and deflects again, and simultaneously, the auxiliary plate frame 421 is pulled to retract into the auxiliary plate frame 42 along with the recovery deformation of the fourth elastic piece 422 (and the fifth elastic piece 425 also recovers the deformation to enable the elastic clamping piece 424 to return to the default position), so that the auxiliary plate 421 can conveniently perform the next work of abutting the gas conveying part 411; therefore, when the main film 36 loses the air supply to the auxiliary film 41, the arc plate protrusion 423 on the auxiliary partition 421 tightly seals the air conveying part 411, so that the input hot air is accumulated on the middle rotating part 412, and when the auxiliary partition 421 loses the tightly sealing of the air conveying part 411, the hot air in the battery case 1 is reduced, and the main partition 34 returns to the default position, so that the reversely movable driven frame 43 is used for replacing the tightly sealing of the auxiliary partition 421 to the air conveying part 411 by the abutting protrusion 434, the hot air stored in the middle rotating part 412 is not easy to leak, and under the matching action of the elastic clamping piece 424 and the clamping protrusion 435, the abutting protrusion 434 can be used for replacing the abutting work of the auxiliary partition 421 in time.

Moreover, when the main partition 34 moves the driven frame 43 moving reversely away from the main board frame 24, the driven frame 43 pulls the special-shaped support frame 46 to a position away from the air storage part 413, so that the opening of the special-shaped pushing piece 47 faces away from the air storage part 413, and two special-shaped pushing pieces 47 close to the air storage part 413 are simultaneously connected with the film on the middle rotating part 412 in a mutually-approaching manner by the arc-shaped protrusions 471 which are symmetrically arranged front and back, the middle rotating part 412 and the air storage part 413 are sealed, so that hot air entering the middle rotating part 412 from the air conveying part 411 is stored in the middle rotating part 412, and the hot air stored in the air storage part 413 can not flow back into the middle rotating part 412; when the main partition 34 closes the driven frame 43 moving in opposite directions to the main plate frame 24, the driven frame 43 pushes the special-shaped support frame 46 towards the position closing the air storage part 413, so that the special-shaped pushing pieces 47 open towards the air storage part 413, and simultaneously, when two special-shaped pushing pieces 47 far away from the air storage part 413 and arc-shaped protrusions 471 symmetrically arranged front and back are mutually closed to be abutted against the film on the middle rotating part 412, the air conveying part 411 and the middle rotating part 412 are closed, so that hot air originally stored in the middle rotating part 412 enters the air storage part 413 at the moment, and the air conveying part 411 can not cause air leakage to the middle rotating part 412 and the air storage part 413; when the main partition 34 moves next time, the driven frame 43 is repeatedly operated to make the hot air fed from the main film 36 into the air conveying part 411 continuously enter the air storage part 413, so that the air storage part 413 continuously expands and enters the hole path frame 48 along the guide cover to drive the third station.

The driving source of the connecting block 441 in the above embodiment may be an electric push rod, or a motor and a screw rod are matched to drive the connecting block to move, or an existing structure or an existing assembly known to those skilled in the art.

Working principle: under the condition that no thermal runaway occurs to the battery 11, the air outlet 212 in the external air can serve as an air inlet effect, so that air can quickly flow to the air outlet 212 in the riding process of the electric bicycle or tricycle and is fed into the battery shell 1 through the air inlet 211, and meanwhile, external air acts on the blades 321 to enable the blades 321 to deflect along the arc top direction of the blades, and deformation of the bidirectional torsion spring is accompanied, when the vehicle is parked, the bidirectional torsion spring recovers deformation and extracts and discharges air in the battery shell 1, heat generated by the battery 11 during operation is reduced, cooling of the battery 11 during running of the vehicle is realized, and overheat condition of the battery 11 during operation is reduced.

Secondly, when thermal runaway occurs through the battery 11 and a large amount of heat leaks into the battery shell 1, the hot air expands and enters the upper cavity 22, so that the expanded hot air flows into the upper plug cover 33, the upper plug cover 33 slides downwards in the plug sleeve 332, the upper plug cover 33 is driven to drive the shaft rod 31 to move downwards, the shaft boss 311 is inserted into the clamping piece 37, at the moment, the hot air entering the air inlet 21 from the air inlet 211 drives the blade 321 to rotate along the arc end part of the blade to a sixth turn towards the direction, meanwhile, the third elastic piece 372 is extruded to deform when the clamping piece 37 deflects, the blade 321 enables the air outlet 212 to be partially opened, so that the accumulated hot air in the battery shell 1 is rapidly discharged and dispersed from the partially opened air outlet 212, the situation that the heat source is generated due to mutual extrusion caused by a large amount of hot air in the battery shell 1 is reduced is realized, the rapidly discharged and flowing hot air is not easy to flow into the battery shell 1, and when the hot air in the battery shell 1 is reduced, the driving force of the hot air is lost, the blade 321 is simultaneously, the third elastic piece 372 is extruded to deform when the combustion supporting piece is deflected, the air is partially compressed, the air outlet 212 is opened, and the condition of the combustion source is effectively reduced, and the explosion condition occurs, and the combustion condition occurs, and the explosion occurs, and the battery is reduced.

Moreover, the hot air enters the main board frame 24 from the perforation, drives the main partition board 34 to slide in the perforation and extend out of the main board frame 24, and enables the end part of the main partition board 34 to be abutted against an arc groove formed on the side wall of the blade cylinder 32, so that the hot air expanded in the battery case 1 is stored in the pressure cavity 35 before the main partition board 34 is matched with the blade 321 to form the pressure cavity 35; when the blade 321 rotates, the single blade 321 presses the pressing cavity 35, and the hot air in the pressing cavity 35 is conveyed into the main film 36, so that the main film 36 can store additional hot air, and simultaneously the main film 36 expands and deforms to enable the main air release member 361 on the main film 36 to be close to the air release cover 362, so that the trigger member arranged in the air release cover 362 triggers the air release work on the main air release member 361, and the additional hot air stored in the main film 36 enters the battery case 1 again along the inner wall of the air release cover 362 and is discharged out of the battery case 1; and the main film 36 makes part of the hot air enter the auxiliary film 41 in the expansion process, and gradually accumulates the part of the hot air in the auxiliary film 41 in the process of repeatedly expanding and shrinking the main film 36 so as to expand the auxiliary film 41 into the guide cover, and then deflates the auxiliary film 41.

Moreover, part of the hot air flowing to the venting cover 362 enters from the perforation on the auxiliary plate frame 42, so that the perforated hot air extrudes the auxiliary partition plate 421 to extend out of the auxiliary plate frame 42, and simultaneously, the auxiliary partition plate 421 deforms along with the fourth elastic piece 422, so that the arc plate boss 423 at the end part of the auxiliary partition plate 421 pushes the air conveying part 411 and pushes the air conveying part 411 to be tightly abutted against the main plate frame 24, so that the main film 36 directly seals the air conveying part 411 while venting, and simultaneously, the driving rod 342 drives the connecting block 441 to close to the main plate frame 24, so that the connecting block 441 is abutted against one end of the lever plate 44, and the other end of the lever plate 44 is abutted against the hooking boss, thereby realizing that the driven frame 43 is far away from the main plate frame 24 under the action of lever principle, and simultaneously, the sixth elastic piece 432 deforms, and further realizing that the driven frame 43 and the main partition plate 34 keep reverse movement; when the hot air in the battery case 1 decreases, the hot air entering from the air inlet 211 decreases, so that the blade 321 loses the driving force of the hot air and closes the air outlet 212 under the action of restoring deformation of the third elastic piece 372, meanwhile, the hot air entering into the through hole on the main board frame 24 decreases, so that the main partition board 34 is far away from the blade barrel 32 under the action of restoring deformation of the second elastic piece 343, meanwhile, the driving rod 342 drives the connecting block 441 to be separated from the lever board 44, so that the driven frame 43 approaches the main board frame 24 under the action of restoring deformation of the sixth elastic piece 432, at this time, the abutting boss 434 on the inclined board 433 approaches the air conveying part 411, and meanwhile, the clamping boss 435 pushes the elastic clamping piece 424 to slide in the chute, and reaches the other end of the chute, namely approaches the end of the arc gathering plate boss 423, the abutting boss 423 on the inclined board 433 contacts the air conveying part 411, at this time, the driven frame 43 continuously approaches the main board frame 24, so that the clamping boss 435 on the main board frame 435 is continuously stressed and separated from the elastic clamping piece 424, and the hinged auxiliary board 42 slightly deflects again, and simultaneously, the clamping boss 435 slightly deflects slightly, and the auxiliary board 421 is pulled back to the auxiliary board 421 to the inner part 421, thereby restoring the deformation of the main partition board 421; therefore, when the main film 36 loses the air supply to the auxiliary film 41, the arc plate protrusion 423 on the auxiliary partition plate 421 tightly seals the air conveying part 411, so that the input hot air is accumulated on the middle rotating part 412, and when the auxiliary partition plate 421 loses the tightly sealing of the air conveying part 411, the abutting protrusion 434 is used for replacing the tightly sealing of the auxiliary partition plate 421 to the air conveying part 411 by the reversely movable driven frame 43 due to the fact that the hot air in the battery case 1 is reduced and the main partition plate 34 returns to the default position, so that the hot air stored in the middle rotating part 412 is unlikely to leak, and the abutting protrusion 434 can be used for replacing the abutting work of the auxiliary partition plate 421 when in the matching action of the elastic clamping piece 424 and the clamping protrusion 435; firstly, the main partition 34 moves the driven frame 43 moving reversely away from the main board frame 24, at this time, the driven frame 43 pulls the special-shaped propping frame 46 to a position away from the gas storage part 413, so that the opening of the special-shaped pushing piece 47 faces away from the gas storage part 413, and when two special-shaped pushing pieces 47 close to the gas storage part 413 and arc-shaped protrusions 471 symmetrically arranged front and back are mutually close to and abutted against a film on the middle rotating part 412, the middle rotating part 412 and the gas storage part 413 are sealed, so that hot gas entering the middle rotating part 412 from the gas transmission part 411 is stored in the middle rotating part 412, and the hot gas stored in the gas storage part 413 can not flow back into the middle rotating part 412; when the main partition 34 closes the driven frame 43 moving in opposite directions to the main plate frame 24, the driven frame 43 pushes the special-shaped support frame 46 towards the position closing the air storage part 413, so that the special-shaped pushing pieces 47 open towards the air storage part 413, and simultaneously, when two special-shaped pushing pieces 47 far away from the air storage part 413 and arc-shaped protrusions 471 symmetrically arranged front and back are mutually closed to be abutted against the film on the middle rotating part 412, the air conveying part 411 and the middle rotating part 412 are closed, so that hot air originally stored in the middle rotating part 412 enters the air storage part 413 at the moment, and the air conveying part 411 can not cause air leakage to the middle rotating part 412 and the air storage part 413; when the main partition 34 moves next time, the driven frame 43 is repeatedly operated to make the hot air fed from the main film 36 into the air conveying part 411 continuously enter the air storage part 413, so that the air storage part 413 continuously expands and enters the hole path frame 48 along the guide cover to drive the third station.

Finally, the lower part of the auxiliary film 41 expands into the guide cover, when the auxiliary air release piece on the auxiliary film 41 touches the triggering piece in the air channel 481, air starts to release, so that hot air enters into the opposite cavity 482 from the air channel 481 through the auxiliary air inlet 483, the lower plug cover 484 in the opposite cavity 482 moves downwards, the lower plug cover 484 extrudes air below the opposite cavity 482 from the auxiliary air outlet 4831 into the lower cavity 23, meanwhile, the lower plug cover 484 drives the shaft 31 to move downwards and perform the operation of a third station, the other side of the air channel 481 is communicated through the connecting hole 485 on the shaft 31, the hot air flowing in the air channel 481 is enabled to be rapidly discharged out of the battery shell 1, the plug 4841 drives the plug 4842 to move downwards in the process of moving downwards of the lower plug cover 484, the arc hole 486 is enabled to be opened, the hot air originally in the air channel 481 is enabled to rapidly flow in the arc hole 486 to generate negative pressure, the hot air in the lower cavity 23 is extracted into the battery shell 23, meanwhile, the connecting hole 485 on the other side of the shaft 31 is enabled to communicate with the other side of the air channel 481, the hot air flowing in the air channel 481 is enabled to enter into the battery shell 1 again, the battery shell 11 is enabled to rapidly flow out of the battery shell 11, and the extra heat loss can be generated in the battery shell 11 is enabled to be rapidly and the battery shell 11 is reduced, and the loss of the battery 11 is rapidly and the battery can be exhausted.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the invention, which is defined by the appended claims.

Claims (10)

1. The automatic fire extinguishing device for the energy storage battery pack comprises a battery shell (1) provided with a battery (11), and is characterized in that a plurality of air guide cylinders (2) provided with air openings (21) are arranged on the battery shell (1), and blades (321) for controlling the opening and the closing of the air openings (21) are arranged in the air guide cylinders (2) in a circumferential rotation mode;

the utility model discloses a novel air duct, including air duct (2), air duct (2) internal activity is equipped with axostylus axostyle (31), be provided with third elastic component (372) on air duct (2) along its axle center circumference direction, just fastener (37) are installed to third elastic component (372) tip, axostylus axostyle (31) are used for connecting blade (321) and fastener (37), wherein:

the third elastic piece (372) enables the blade (321) to close the air inlet (21) in a default state;

after the blades (321) rotate for a preset number of turns, the third elastic piece (372) deforms to enable the air port (21) to be opened.

2. An automatic fire extinguishing device for energy storage battery packs according to claim 1, characterized in that the shaft (31) has a vertical movement in synchronization with the blade (321), in cooperation with the third elastic member (372) in the lowered position.

3. An automatic fire extinguishing device for an energy storage battery pack according to claim 1, characterized in that a main partition board (34) is slidably arranged on the air duct (2), so that a pressure cavity (35) is formed between the main partition board (34) and the blades (321);

also comprises a main membrane (36) communicated with the pressure cavity (35), and when the blade (321) rotates, the pressure cavity (35) is extruded to enable gas to enter the main membrane (36) to expand.

4. A self-extinguishing device for energy storage battery pack according to claim 3, wherein the air duct (2) is provided with a main air release member (361), and the main membrane (36) is matched with the main air release member (361).

5. An energy storage battery pack automatic fire extinguishing device according to claim 4, further comprising a suction assembly (4) comprising:

a secondary membrane (41) arranged on the air duct (2), wherein the secondary membrane (41) is communicated with the main membrane (36);

a hole path frame (48) which is arranged on the air duct (2) and provided with a plurality of arc holes (486);

Wherein: the auxiliary membrane (41) is matched with the hole path frame (48) so as to enable the arc holes (486) to be communicated with the air duct (2).

6. The automatic fire extinguishing device for the energy storage battery pack according to claim 5, wherein the shaft lever (31) is provided with a connecting hole (485), and the connecting hole (485) is communicated with an air passage (481) arranged on the hole road frame (48) under the matching state of the auxiliary film (41) and the hole road frame (48).

7. The automatic fire extinguishing device for the energy storage battery pack according to claim 5, wherein the auxiliary membrane (41) is divided into a gas transmission part (411), a transfer part (412) and a gas storage part (413) according to the positions, the gas transmission part (411) is matched with the main membrane (36), and the gas storage part (413) is matched with the hole road frame (48).

8. The automatic fire extinguishing device for the energy storage battery pack according to claim 7, wherein the main air leakage member (361) is movably provided with a secondary partition plate (421), and the secondary partition plate (421) moves along a predetermined track along with the volume reduction of the main film (36) and finally abuts against the air conveying part (411).

9. The automatic fire extinguishing device for the energy storage battery pack according to claim 7, wherein a driven frame (43) is movably arranged on the air duct (2), and a special-shaped supporting frame (46) which is symmetrically arranged is hinged on the driven frame (43);

The air duct (2) is circumferentially and rotationally provided with symmetrical special-shaped scraping pieces (47), and the special-shaped supporting frame (46) is matched with the special-shaped scraping pieces (47) so that the special-shaped scraping pieces (47) are in intermittent abutting fit with the transfer part (412).

10. The automatic fire extinguishing device for the energy storage battery pack according to claim 9, wherein a plurality of lever plates (44) are arranged on the air duct (2), and a plurality of connecting blocks (441) are arranged on the main partition plate (34);

the connecting block (441) intermittently abuts against the lever plate (44) so that the lever plate (44) drives the driven frame (43) to move.