CN210744049U

CN210744049U - Explosion-proof battery box

Info

Publication number: CN210744049U
Application number: CN201922212176.4U
Authority: CN
Inventors: 刘建明
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-11
Filing date: 2019-12-11
Publication date: 2020-06-12
Anticipated expiration: 2029-12-11

Abstract

The utility model discloses an explosion-proof battery box, which comprises an upper cover and a bottom shell, wherein a plurality of clapboards are arranged in the bottom shell, the clapboards are of hollow structures and are communicated with each other to divide the bottom shell into a plurality of battery grids, heat insulation plates are arranged in the battery grids, a connecting assembly and a first air bag are arranged in the clapboards, the upper cover is detachably connected with the bottom shell through the connecting assembly, one end of the heat insulation plate, which is close to the first air bag, is provided with a puncture device, and the position, which corresponds to the puncture device, on the clapboard is provided with; according to the explosion-proof battery box, the battery box is divided into the plurality of battery grids through the partition plates, so that the energy of the batteries cannot be rapidly gathered, and the danger of explosion is reduced; meanwhile, the upper cover and the lower shell are detachably connected through the connecting assembly, when the gas pressure of the combustible gas is too high, the combustible gas pushes the puncture device to puncture the first airbag, so that the connecting assembly falls off from the upper cover, the combustible gas can be quickly released, explosion is avoided, and time is won for drivers and passengers to withdraw to a safe place.

Description

Explosion-proof battery box

Technical Field

The utility model relates to a battery box technical field specifically is an explosion-proof battery box.

Background

In recent years, with the catalysis of new energy automobile industry policies in China, a large number of new energy automobiles are put on the market, the safety of vehicles faces important challenges, particularly once a lithium ion battery box is ignited, the whole box of batteries can be ignited, burned and scrapped by light people, the vehicles can be ignited even exploded by heavy people, potential hazards are caused to drivers and passengers of the vehicles, and a plurality of lithium ion battery ignition accidents of electric automobiles occur at home and abroad, so that a large amount of economic losses and casualties are caused.

The fire of the lithium ion battery box is generally caused by the thermal runaway of the lithium ion battery, a large amount of combustible gas, liquid and solid mixture can be released in the battery box after the thermal runaway of the lithium ion battery, and the mixture can be combusted or exploded under certain conditions.

The existing battery box adopts all batteries in one space and all batteries in one space, when the energy of the batteries is uncontrollable, the batteries can be rapidly diffused into the space, so that larger uncontrollable energy is generated, and the danger is maximized. Meanwhile, the battery box is usually installed in a screw fastening mode, a large amount of combustible gas generated when the battery is overheated cannot be effectively released, and the generated energy is rapidly concentrated, so that greater energy power is generated, the screw fastening or the box body is broken under certain energy, and explosive hazards are generated.

SUMMERY OF THE UTILITY MODEL

Based on this, it is necessary to provide an explosion-proof battery box.

The utility model provides an explosion-proof battery box, includes upper cover, drain pan, has a plurality of baffles in the drain pan, a plurality of baffles divide into a plurality of battery check for hollow structure and intercommunication setting with the drain pan, install the heat insulating board in the battery check, install coupling assembling and first gasbag in the baffle, the upper cover can be dismantled with the drain pan through coupling assembling and be connected, the one end that the heat insulating board is close to first gasbag has the puncture ware, set up the through-hole on the position that corresponds with the puncture ware on the baffle.

In one embodiment, the connecting assembly comprises a buckle, the buckle is rotatably installed on the partition plate, one end of the buckle is clamped in a first groove formed in the upper cover, and one end of the buckle is abutted against the first air bag.

In one embodiment, the connecting assembly comprises a clamping piece, two sides of the clamping piece are rotatably installed on the partition board, one end of the clamping piece is clamped in a second groove formed in the upper cover, and the other end of the clamping piece is clamped on the first air bag.

In one embodiment, the explosion-proof battery box further comprises a flame-retardant plate in a shape like a Chinese character 'hui', and the flame-retardant plate is mounted on the battery grid.

In one embodiment, the top surface, the bottom surface, and the side surfaces connected to the top surface and the bottom surface of the battery cell are respectively provided with a second airbag.

In one embodiment, the explosion-proof battery box further comprises a connecting chain, and two ends of the connecting chain are respectively installed on the upper cover and the bottom shell.

In one embodiment, the puncture device has a spiral-type pointed cone.

In one embodiment, the first and second balloons are made of PE material.

According to the explosion-proof battery box, the battery box is divided into the plurality of battery grids through the partition plates, so that the energy of the batteries cannot be rapidly gathered, and the danger of explosion is reduced; meanwhile, the upper cover and the lower shell are detachably connected through the connecting assembly, when the air pressure of the combustible gas is too high, the combustible gas pushes the puncture device to puncture the first air bag, so that the connecting assembly falls off from the upper cover, the upper cover and the lower shell are automatically separated, the combustible gas can be quickly released, explosion is avoided, time is won for drivers and passengers to evacuate to a safe place, and the safety of the drivers and the passengers is guaranteed.

Drawings

Fig. 1 is an assembly view of an explosion-proof battery box according to an embodiment of the present invention;

fig. 2 is an assembly view of a bottom case of an explosion-proof battery box according to an embodiment of the present invention shown in fig. 1;

fig. 3 is a cross-sectional view of an explosion-proof battery box according to an embodiment of the present invention shown in fig. 1;

fig. 4 is an enlarged view of a portion a of an explosion-proof battery box according to an embodiment of the present invention in fig. 3;

fig. 5 is an enlarged view of a portion B of an explosion-proof battery box according to an embodiment of the present invention shown in fig. 3;

fig. 6 is a structural view of a puncture outfit of an explosion-proof battery box according to fig. 1.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1, an explosion-proof battery box comprises an upper cover 10 and a bottom shell 20, wherein a plurality of partition plates 21 are arranged in the bottom shell 20, the partition plates 21 are of a hollow structure and are communicated with each other to divide the bottom shell 20 into a plurality of battery grids 30, heat insulation plates 31 are arranged in the battery grids 30, a connecting assembly 40 and a first air bag 50 are arranged in the partition plates 21, the upper cover 10 is detachably connected with the bottom shell 20 through the connecting assembly 40, a puncture device 60 is arranged at one end, close to the first air bag 50, of each heat insulation plate 31, and a through hole is formed in the corresponding position of each puncture device 60 on each partition plate 21.

The upper cover 10 is installed on the automobile chassis, the plurality of partition plates 21 are of a hollow structure and are arranged in a communicated manner, the first air bags 50 are installed in the plurality of partition plates 21 and are arranged in a communicated manner, when a battery pack in a certain battery grid 30 is overheated, the battery pack can emit combustible gas, when the air pressure of the generated combustible gas is too large, the puncture device 60 can be pushed to move towards the first air bag 50 until the first air bag 50 is punctured, after the first air bag 50 on one side of the certain battery grid 30 is punctured, the first air bag 50 is a communicated whole, so that the whole first air bag 50 can be deflated, all the connecting components 40 can fall off from the upper cover 10, the upper cover 10 and the bottom shell 20 can be quickly separated, and the combustible gas can be quickly discharged.

Thus, the battery box is divided into a plurality of battery grids 30 by the partition plates 21, so that the energy of the batteries cannot be rapidly gathered, and the danger of explosion is reduced; meanwhile, the upper cover 10 and the lower cover 20 are detachably connected through the connecting assembly 40, when the gas pressure of the combustible gas is too high, the combustible gas pushes the puncture device 60 to puncture the first gas bag 50, so that the connecting assembly 40 falls off from the upper cover 10, the upper cover 10 and the lower cover 20 are automatically separated, the combustible gas can be quickly released, the explosion is avoided, time is won for drivers and passengers to evacuate to a safe place, and the safety of the drivers and the passengers is ensured.

Further, in order to enable the connecting assembly 40 to include a buckle 41, the buckle 41 is rotatably installed on the partition plate 21, and one end of the buckle 41 is clamped in the first groove 11 formed in the upper cover 10, and one end of the buckle 41 abuts against the first air bag 50.

Example 1: when the battery pack in a certain battery compartment 30 is overheated, the battery pack may emit combustible gas, and when the pressure of the generated combustible gas is too high, the puncture device 60 may be pushed to move towards the first airbag 50 until the first airbag 50 is punctured, one end of the buckle 41 abuts against the first airbag 50, and when the support of the first airbag 50 is lost, one end of the buckle 41 falls off from the upper cover 10 due to the action of gravity, so that the upper cover 10 and the bottom case 20 are rapidly separated, and the combustible gas is rapidly discharged.

Thus, through the arrangement of the buckle 41, after the first air bag 50 is punctured, the buckle 41 falls off from the upper cover 10 due to the loss of the support of the first air bag 50, so that the upper cover 10 and the bottom shell 20 are quickly separated, the upper cover 10 and the bottom shell 20 are automatically separated, the combustible gas is quickly discharged, and the safety of the battery box is ensured.

Further, the connecting assembly 40 includes a clamping member 42, two sides of the clamping member 42 are rotatably mounted on the partition board 21, one end of the clamping member is clamped in the second groove 12 formed in the upper cover, and the other end of the clamping member is clamped on the first airbag 50.

Example 2: the clamping member 42 is two clamping portions which are connected through a torsion spring, when the battery pack in a certain battery cell 30 is overheated, the battery pack can emit combustible gas, when the pressure of the generated combustible gas is too high, the puncture device 60 can be pushed to move towards the first air bag 50 until the first air bag 50 is punctured, one end of the first air bag 50 clamped by the two clamping portions of the clamping member 42 is inwardly folded under the action of the torsion spring, and the other end of the first air bag is separated from the second groove 12, so that the upper cover 10 and the bottom shell 20 are quickly separated.

Thus, through the arrangement of the buckle 41, after the first air bag 50 is punctured, one end of the clamping member 42 loses the support of the first air bag 50, so that the other end falls off from the upper cover 10, the upper cover 10 and the bottom shell 20 are quickly separated, the upper cover 10 and the bottom shell 20 are automatically separated, the combustible gas is quickly discharged, and the safety of the battery box is ensured.

Further, in order to control the spread of flame, the explosion-proof battery box further includes a flame retardant plate 70 of a 'return' shape, and the flame retardant plate 70 is mounted on the battery compartment 30.

Thus, the flame-retardant plate 70 is arranged in a shape like a Chinese character 'hui', when the battery pack catches fire, flame is sprayed out from the small hole formed in the middle of the flame-retardant plate 70, the combustion path of the flame is controlled, the flame is prevented from being combusted to other surrounding battery packs to a certain degree, the spreading speed of the flame is effectively controlled, and time is won for evacuation of drivers and passengers.

Further, in order to achieve a good shock-absorbing effect, the top surface, the bottom surface, and the side surfaces connected to the top surface and the bottom surface of the battery cell 30 are respectively provided with the second air bag 80.

Thus, the second air bags 80 are arranged on the top surface and the bottom surface of the battery grid 30 and the side surfaces respectively connected with the top surface and the bottom surface, so that a good shock absorption effect can be achieved, and the battery pack is effectively prevented from being damaged due to vibration.

Further, in order to avoid an accident caused after the bottom case 20 is separated, the explosion-proof battery box further includes a connection chain 90, and both ends of the connection chain 90 are respectively installed on the upper cover 10 and the bottom case 20.

Thus, after the upper cover 10 and the bottom case 20 are separated, since the upper cover 10 is mounted on the vehicle, the upper cover 10 is always connected to the bottom case 20 by the connection chain 90, thereby avoiding other accidents caused by other places where the bottom case 20 moves due to external force.

Further, the penetrator 60 has a spiral-type pointed cone for the purpose of rapidly piercing the first balloon 50.

Thus, the puncture device 60 has a plurality of sharp cones, and any one of the sharp cones touches the first air bag 50 to achieve the effect of puncturing the first air bag 50, so that the battery box can be quickly decompressed.

Further, the first balloon 50 and the second balloon 80 are made of PE material.

The melting point of the PE material is relatively low, generally about 150 degrees, and when the temperature of the battery pack rises or a fire breaks, the first airbag 50 and the second airbag 80 can be burned through, so that the upper cover 10 and the bottom case 20 are automatically separated, the safety of the battery box can be ensured to a certain extent, the occurrence of explosion accidents is delayed, and sufficient time is provided for drivers and passengers to evacuate.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. An explosion-proof battery box which characterized in that: the battery bottom case is characterized in that a plurality of partition plates are arranged in the upper cover, the bottom case and the bottom case, the partition plates are hollow structures and are communicated with the bottom case to divide the bottom case into a plurality of battery grids, heat insulation plates are arranged in the battery grids, a connecting assembly and a first air bag are arranged in the partition plates, the upper cover is detachably connected with the bottom case through the connecting assembly, one end, close to the first air bag, of each heat insulation plate is provided with a puncture device, and a through hole is formed in the position, corresponding to the puncture device.

2. An explosion-proof battery box according to claim 1, characterized in that: the connecting assembly comprises a buckle, the buckle is rotatably installed on the partition plate, one end of the buckle is clamped in a first groove formed in the upper cover, and one end of the buckle is abutted to the first air bag.

3. An explosion-proof battery box according to claim 1, characterized in that: the connecting assembly comprises a clamping piece, two sides of the clamping piece are rotatably arranged on the partition board, one end of the clamping piece is clamped in the second groove formed in the upper cover, and the other end of the clamping piece is clamped on the first air bag.

4. An explosion-proof battery box according to claim 1, characterized in that: the explosion-proof battery box also comprises a back-shaped flame-retardant plate, and the flame-retardant plate is arranged on the battery grid.

5. An explosion-proof battery box according to claim 1, characterized in that: and the top surface and the bottom surface of the battery grid, and the side surfaces respectively connected with the top surface and the bottom surface are provided with second air bags.

6. An explosion-proof battery box according to claim 1, characterized in that: the explosion-proof battery box further comprises a connecting chain, and two ends of the connecting chain are respectively installed on the upper cover and the bottom shell.

7. An explosion-proof battery box according to claim 1, characterized in that: the puncture device has a spiral pointed cone.

8. An explosion-proof battery box according to claim 1, characterized in that: the first air bag and the second air bag are made of PE materials.