CN114824616B - Fireproof and explosion-proof battery box for low-cost electric automobile - Google Patents

Fireproof and explosion-proof battery box for low-cost electric automobile Download PDF

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Publication number
CN114824616B
CN114824616B CN202210492936.5A CN202210492936A CN114824616B CN 114824616 B CN114824616 B CN 114824616B CN 202210492936 A CN202210492936 A CN 202210492936A CN 114824616 B CN114824616 B CN 114824616B
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China
Prior art keywords
outer box
explosion
box body
proof
carbon dioxide
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CN202210492936.5A
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CN114824616A (en
Inventor
何超
陈丹
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Anhui Tianjun Precision Technology Co ltd
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Anhui Tianjun Precision Technology Co ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/242—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
    • A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C35/00—Permanently-installed equipment
    • A62C35/02—Permanently-installed equipment with containers for delivering the extinguishing substance
    • A62C35/10—Containers destroyed or opened by flames or heat
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/658—Means for temperature control structurally associated with the cells by thermal insulation or shielding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/222—Inorganic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

The invention discloses a fireproof and explosion-proof battery box body for a low-cost electric automobile, which relates to the technical field of battery boxes of electric automobiles, in particular to a fireproof and explosion-proof battery box body for a low-cost electric automobile. This battery box for fire prevention explosion-proof low-cost electric automobile through set up explosion-proof reinforcing plate in the bottom of outer box, improves the guard strength of outer box bottom, uses through the cooperation of buffering foam board and buffer spring, and buffering foam board and buffer spring can cushion the energy of striking to reduce the impact force that outer box received, improve the security of outer box.

Description

Fireproof and explosion-proof battery box for low-cost electric automobile
Technical Field
The invention relates to the technical field of battery boxes of electric automobiles, in particular to a fireproof and explosion-proof battery box body for a low-cost electric automobile
Background
An electric vehicle (BEV) is a vehicle that uses a vehicle-mounted power supply as power and uses a motor to drive wheels to run, and meets various requirements of road traffic and safety regulations. Because of smaller influence on environment than the traditional automobile, the method has wide prospect, the speed of the pure electric automobile is high and low, the starting speed is dependent on the power and performance of the driving motor, the continuous mileage is dependent on the capacity of the vehicle-mounted power battery, the weight of the vehicle-mounted power battery is dependent on the power battery such as lead-acid battery, zinc-carbon battery and lithium battery, and the volume, specific gravity, specific power, specific energy and cycle life of the vehicle-mounted power battery are all different.
The power battery is the only power energy source of the existing pure electric vehicle and is one of important factors affecting the performance of the pure electric vehicle. The safety of battery package directly influences the security of whole car, at present, adopts the battery box as the carrier of group battery, and the battery is placed inside the battery box, connects each electric core through the mode of busbar, and the electric core is packaged through the box.
The battery box plays a key role in safety work and protection of the battery pack, and as the battery box is generally arranged at the bottom of an automobile, the bottom of the battery box is very easy to damage from the outside, the safety of the battery pack is affected, and meanwhile, the traditional battery box structure mainly depends on the mode of coating a fireproof coating to improve the fireproof function of the composite material battery box in a limited way, so that flame generated by the battery pack cannot be solved; secondly, the fireproof coating is easy to fall off in a layering manner in the using process of the structure, and potential safety hazards exist, so that the battery box body for the fireproof and explosion-proof low-cost electric automobile is provided.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a fireproof and explosion-proof battery box body for a low-cost electric automobile, and solves the problems in the prior art.
In order to achieve the above purpose, the invention is realized by the following technical scheme: the utility model provides a battery box for fire prevention explosion-proof low-cost electric automobile, includes outer box, explosion-proof reinforcing plate is installed to the bottom of outer box, the buffering foam board has been placed at the top of explosion-proof reinforcing plate, the top fixedly connected with buffer spring of buffering foam board, the bottom of outer box is offered to buffer spring's top fixed mounting, the cylinder hole has been seted up to the inside of outer box, the inside fixed mounting in cylinder hole has the carbon dioxide accumulator tube, the inside fixed cover of carbon dioxide accumulator tube is equipped with plugging material, the inboard of outer box is installed the carbon fiber and is put up the box, the internal thread of carbon fiber is put up the fixing bolt second, the carbon fiber is put up the fixing bolt second and is put up with outer box connection.
Optionally, the side fixedly connected with strengthening rib of outer box, equidistant distribution of strengthening rib, hollow groove has been seted up to the inside of strengthening rib, outer box and strengthening rib all adopt aluminum alloy material die-casting to form, through setting up the strengthening rib, can improve the structural strength of outer box, take place deformation when preventing that outer box from receiving the striking, are favorable to the protection to the group battery.
Optionally, the side welding of outer box has the fixed bolster, the fixed bolster symmetric distribution is in the both sides of outer box, the mounting hole has been seted up to the inside of fixed bolster, through setting up the fixed bolster, and the fixed bolster is used for installing the chassis of car with outer box, conveniently supports outer box, the installation of the outer box of being convenient for.
Optionally, the explosion-proof reinforcing plate adopts stainless steel material preparation to form, the internal thread of explosion-proof reinforcing plate has cup jointed fixing bolt one, the explosion-proof reinforcing plate is in the same place with outer box bolted connection through fixing bolt one, through setting up the explosion-proof reinforcing plate, and stainless steel material's intensity is high, utilizes the explosion-proof reinforcing plate to protect the bottom of outer box, prevents that the bottom of outer box from receiving the destruction.
Optionally, the buffering foam board adopts fire-retardant thermal-insulated foam board preparation to form, recess one has been seted up at the top of buffering foam board, buffer spring's bottom is in recess one, through using fire-retardant thermal-insulated foam board preparation buffering foam board, when buffering, can also play fire-retardant thermal-insulated effect, avoids the condition that the spontaneous combustion takes place for buffering foam board.
Optionally, recess two has been seted up to the bottom of outer box, in recess two is installed at buffer spring's top, buffer spring equidistance distributes between buffer foam board and outer box, and through setting up buffer spring, when the bottom of battery box received the striking, buffer spring can take place to deform and cushion the impact, reduces the damage of striking to outer box.
Optionally, the carbon dioxide accumulator tube is high strength glass fiber pipe, the inside of carbon dioxide accumulator tube is filled with high pressure carbon dioxide, the fumarole has been seted up to the surface equidistance of carbon dioxide accumulator tube, the fumarole runs through the carbon dioxide accumulator tube, through setting up the carbon dioxide accumulator tube in the inside of outer box, when the group battery conflagration breaks out, the shutoff material in the carbon dioxide accumulator tube can receive the high temperature and melt, and the carbon dioxide of the inside storage of carbon dioxide accumulator tube can spray out at this moment, can play the effect of putting out a fire to the group battery.
Optionally, the plugging material is made of ABS plastic, the plugging material is installed in the air hole and is used for completely plugging the air hole, the plugging material has higher structural strength through being arranged, the plugging material is prevented from being destroyed by high-pressure carbon dioxide, and when the temperature of the plugging material exceeds 95 ℃, the plugging material is subjected to thermal deformation, so that the air hole is opened to spray the carbon dioxide.
Optionally, fixed mounting has the insulating layer in the inner wall of outer box, the insulating layer adopts fire-retardant thermal-insulated foam preparation to form, the insulating layer encircles outer box round, through setting up the insulating layer, and the insulating layer can play thermal-insulated effect, avoids the inside transmission of the outer box of external high temperature box, prevents that the high temperature from arousing the group battery nature, has improved the security of group battery.
Optionally, the mounting groove has been seted up to the top surface of outer box, the bottom fixedly connected with installation piece of box in the carbon fiber, in the installation groove was installed to the installation piece joint, through the cooperation of mounting groove and installation piece use, the installation piece can the joint to the inside of mounting groove, can make the laminating that box and outer box are more in the carbon fiber, has improved the stability of outer box and the equipment of carbon fiber inner box.
The invention provides a fireproof and explosion-proof battery box body for a low-cost electric automobile, which has the following beneficial effects:
1. this battery box for fire prevention explosion-proof low-cost electric automobile sets up explosion-proof reinforcing plate through the bottom at outer box, and the explosion-proof reinforcing plate can provide extra protection in the bottom of outer box, improves the guard strength of outer box bottom, prevents that the bottom of outer box from receiving the destruction, uses through the cooperation of buffering foam board and buffer spring, and when the bottom of outer box received the striking, buffer foam board and buffer spring can cushion the energy of striking to reduce the impact force that the outer box received, improve the security of outer box.
2. This battery box for fire prevention explosion-proof low-cost electric automobile sets up the carbon dioxide accumulator tube through the inside at outer box, and when the group battery took place the conflagration, the shutoff material in the carbon dioxide accumulator tube can receive high temperature and melt, and the inside carbon dioxide that stores of carbon dioxide accumulator tube can spray out this moment, can play the effect of putting out a fire to the group battery, through set up the insulating layer in the inside of outer box, the insulating layer can play thermal-insulated effect, avoids the inside transmission of the outside high temperature box outer box, prevents that the high temperature from arousing the group battery nature, has improved the security of group battery.
3. This battery box for fire prevention explosion-proof low-cost electric automobile sets up the interior box of carbon fiber through the inside at outer box, and the interior box of carbon fiber has light in weight, characteristics that intensity is high, can alleviate the weight of battery box, improves the degree of light weight of car, through set up the installation piece in the bottom of the interior box of carbon fiber, the installation piece can the joint to the inside of mounting groove, can make the laminating that carbon fiber inner box and outer box are more, has improved the stability of outer box and the equipment of carbon fiber inner box.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the structure of the bottom part of the present invention;
FIG. 3 is a schematic cross-sectional view of the present invention;
FIG. 4 is a schematic view of the split structure of the present invention;
FIG. 5 is a schematic view of the structure of the outer case of the present invention;
FIG. 6 is a schematic view of the structure of the inner case of the present invention;
FIG. 7 is a schematic diagram of a carbon dioxide storage tank according to the present invention.
In the figure: 1. an outer case; 2. reinforcing ribs; 21. a hollow groove; 3. a fixed bracket; 31. a mounting hole; 4. an explosion-proof reinforcing plate; 5. a first fixing bolt; 6. a cushioning foam panel; 7. a buffer spring; 8. a carbon dioxide storage tube; 9. a plugging material; 10. a thermal insulation layer; 11. a carbon fiber inner box body; 12. a second fixing bolt; 13. a mounting groove; 14. and (5) installing a block.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Referring to fig. 1, the present invention provides a technical solution: the utility model provides a battery box for fireproof and explosion-proof's low-cost electric automobile, including outer box 1, the side fixedly connected with strengthening rib 2 of outer box 1, the equidistant distribution of strengthening rib 2, hollow groove 21 has been seted up to the inside of strengthening rib 2, outer box 1 and strengthening rib 2 all adopt aluminum alloy material die-casting to form, through setting up strengthening rib 2, can improve the structural strength of outer box 1, deformation takes place when preventing that outer box 1 receives the striking, be favorable to the protection to the group battery, the side welding of outer box 1 has fixed bolster 3, fixed bolster 3 symmetric distribution is in the both sides of outer box 1, mounting hole 31 has been seted up to the inside of fixed bolster 3, through setting up fixed bolster 3, fixed bolster 3 is used for installing outer box 1 on the chassis of car, the outer box 1 is supported to the convenience, the installation of outer box 1 of being convenient for.
Referring to fig. 2, an explosion-proof reinforcing plate 4 is installed at the bottom of the outer case 1, the explosion-proof reinforcing plate 4 is made of stainless steel materials, the strength of the stainless steel materials is high by arranging the explosion-proof reinforcing plate 4, the bottom of the outer case 1 is protected by the explosion-proof reinforcing plate 4, the bottom of the outer case 1 is prevented from being damaged, a first fixing bolt 5 is sleeved on an internal thread of the explosion-proof reinforcing plate 4, and the explosion-proof reinforcing plate 4 is connected with the outer case 1 through the first fixing bolt 5.
Referring to fig. 3 and 4, the top of the explosion-proof reinforcing plate 4 is provided with a buffer foam plate 6, the buffer foam plate 6 is made of a flame-retardant heat-insulating foam plate, the buffer foam plate 6 is made of the flame-retardant heat-insulating foam plate, the flame-retardant heat-insulating effect can be achieved when the buffer foam plate 6 is used for buffering, the condition that spontaneous combustion occurs in the buffer foam plate 6 is avoided, the top of the buffer foam plate 6 is provided with a first groove, the bottom of the buffer spring 7 is arranged in the first groove, the top of the buffer foam plate 6 is fixedly connected with a buffer spring 7, the top of the buffer spring 7 is fixedly mounted to the bottom of the outer box 1, the buffer spring 7 is arranged, when the bottom of the battery box is impacted, the buffer spring 7 can deform to buffer impact force, damage to the outer box 1 due to impact is reduced, the bottom of the outer box 1 is provided with a second groove, and the top of the buffer spring 7 is equidistantly distributed between the buffer foam plate 6 and the outer box 1.
Referring to fig. 3 and 7, a cylindrical hole is formed in the outer case 1, a carbon dioxide storage tube 8 is fixedly mounted in the cylindrical hole, the carbon dioxide storage tube 8 is a high-strength glass fiber tube, high-pressure carbon dioxide is filled in the carbon dioxide storage tube 8, air injection holes are formed in the surface of the carbon dioxide storage tube 8 at equal intervals, the air injection holes penetrate through the carbon dioxide storage tube 8, when a fire disaster occurs in the battery pack, a blocking material 9 in the carbon dioxide storage tube 8 is melted at a high temperature, at this time, carbon dioxide stored in the carbon dioxide storage tube 8 can be sprayed out, the fire extinguishing effect can be achieved on the battery pack, the blocking material 9 is fixedly sleeved in the carbon dioxide storage tube 8, the blocking material 9 is made of ABS plastic, the blocking material 9 is mounted in the air injection holes and is completely blocked in the air injection holes, the blocking material 9 has high structural strength, the blocking material 9 is prevented from being destroyed by the high-pressure carbon dioxide, and when the temperature received by the blocking material 9 exceeds 95 ℃, the blocking material 9 is thermally deformed, and the blocking material is opened to spray the carbon dioxide.
Referring to fig. 3, a heat insulation layer 10 is fixedly installed in the inner wall of the outer case 1, the heat insulation layer 10 is made of flame-retardant heat insulation foam, the heat insulation layer 10 surrounds the outer case 1 for one circle, the heat insulation layer 10 can play a role in heat insulation by arranging the heat insulation layer 10, internal transmission of the outer case 1 of an external high-temperature case is avoided, natural battery pack caused by high temperature is prevented, and safety of the battery pack is improved.
Referring to fig. 5 and 6, the inner side of the outer case 1 is provided with the inner carbon fiber case 11, the inner screw thread of the inner carbon fiber case 11 is sleeved with the second fixing bolt 12, the inner carbon fiber case 11 is connected with the outer case 1 through the second fixing bolt 12, the inner carbon fiber case 11 is arranged in the outer case 1, the inner carbon fiber case 11 has the characteristics of light weight and high strength, the weight of the battery case can be reduced, the light weight of an automobile is improved, the top surface of the outer case 1 is provided with the mounting groove 13, the bottom of the inner carbon fiber case 11 is fixedly connected with the mounting block 14, the mounting block 14 is clamped into the mounting groove 13, the mounting block 14 can be clamped into the mounting groove 13 through the cooperation of the mounting groove 13, the inner carbon fiber case 11 can be more attached to the outer case 1, and the assembly stability of the outer case 1 and the inner carbon fiber case 11 is improved.
To sum up, this battery box for fire and explosion prevention's low cost electric automobile, when using, through set up explosion-proof reinforcing plate 4 in the bottom of outer box 1, can improve the crashproof explosion-proof performance of outer box 1 bottom, avoid the bottom of outer box 1 to receive the damage, when the bottom of outer box 1 receives the striking, explosion-proof reinforcing plate 4 can take place deformation and offset the energy of collision, then explosion-proof reinforcing plate 4 gives buffering foam plate 6 and buffer spring 7 with energy transfer, through the deformation of buffering foam plate 6 and buffer spring 7 to the energy of collision buffering, reduce the influence of collision to outer box 1, when the conflagration, the inside shutoff material 9 of carbon dioxide accumulator 8 can be by high temperature melting, at this moment carbon dioxide ash in the carbon dioxide accumulator 8 sprays out, can extinguish open flame, the inside insulating layer 10 of outer box 1 can keep apart the outside temperature simultaneously, avoid the outside high temperature to transmit the inside of outer box 1, prevent that the group battery from receiving high temperature spontaneous combustion, through set up the inside of outer box 1 carbon fiber inner box 11, the weight of the automobile can be reduced, the weight of the automobile can be increased.
In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in the specific direction, and thus should not be construed as limiting the present invention; the terms "first," "second," "third," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "coupled," and the like are to be construed broadly, and may be fixedly coupled, detachably coupled, or integrally coupled, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (4)

1. The utility model provides a fire prevention explosion-proof battery box for low-cost electric automobile, includes outer box (1), its characterized in that: the anti-explosion device comprises an outer box body (1), wherein an anti-explosion reinforcing plate (4) is arranged at the bottom of the outer box body (1), a buffer foam plate (6) is arranged at the top of the anti-explosion reinforcing plate (4), a buffer spring (7) is fixedly connected to the top of the buffer foam plate (6), the top end of the buffer spring (7) is fixedly arranged at the bottom of the outer box body (1), a cylindrical hole is formed in the outer box body (1), a carbon dioxide storage tube (8) is fixedly arranged in the cylindrical hole, a plugging material (9) is fixedly sleeved in the carbon dioxide storage tube (8), a carbon fiber inner box body (11) is arranged on the inner side of the outer box body (1), a fixing bolt II (12) is sleeved on the inner thread of the carbon fiber inner box body (11), and the carbon fiber inner box body (11) is connected with the outer box body (1) through the fixing bolt II (12);
the side face of the outer box body (1) is fixedly connected with reinforcing ribs (2), the reinforcing ribs (2) are distributed at equal intervals, hollow grooves (21) are formed in the reinforcing ribs (2), and the outer box body (1) and the reinforcing ribs (2) are formed by adopting aluminum alloy materials through die casting;
the side face of the outer box body (1) is welded with a fixed support (3), the fixed supports (3) are symmetrically distributed on two sides of the outer box body (1), and mounting holes (31) are formed in the fixed support (3);
the explosion-proof reinforcing plate (4) is made of stainless steel materials, a first fixing bolt (5) is sleeved on the internal thread of the explosion-proof reinforcing plate (4), and the explosion-proof reinforcing plate (4) is connected with the outer box body (1) through the first fixing bolt (5) through bolts;
the buffer foam board (6) is made of a flame-retardant heat-insulating foam board, a first groove is formed in the top of the buffer foam board (6), and the bottom of the buffer spring (7) is arranged in the first groove;
a second groove is formed in the bottom of the outer box body (1), the top of the buffer spring (7) is arranged in the second groove, and the buffer springs (7) are equidistantly distributed between the buffer foam plate (6) and the outer box body (1);
the carbon dioxide storage tube (8) is a high-strength glass fiber tube, high-pressure carbon dioxide is filled in the carbon dioxide storage tube (8), air spraying holes are formed in the surface of the carbon dioxide storage tube (8) at equal intervals, and the air spraying holes penetrate through the carbon dioxide storage tube (8).
2. The battery box for a fireproof and explosion-proof low-cost electric automobile according to claim 1, wherein: the blocking material (9) is made of ABS plastic, and the blocking material (9) is arranged in the air injection hole and completely blocks the air injection hole.
3. The battery box for a fireproof and explosion-proof low-cost electric automobile according to claim 1, wherein: the heat insulation box is characterized in that a heat insulation layer (10) is fixedly installed in the inner wall of the outer box body (1), the heat insulation layer (10) is made of flame-retardant heat insulation foam, and the heat insulation layer (10) surrounds the outer box body (1) for one circle.
4. The battery box for a fireproof and explosion-proof low-cost electric automobile according to claim 1, wherein: the top surface of outer box (1) has seted up mounting groove (13), the bottom fixedly connected with installation piece (14) of carbon fiber inner box (11), installation piece (14) joint is in mounting groove (13).
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