CN113437425A - Battery box of new energy automobile - Google Patents

Battery box of new energy automobile Download PDF

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Publication number
CN113437425A
CN113437425A CN202110983280.2A CN202110983280A CN113437425A CN 113437425 A CN113437425 A CN 113437425A CN 202110983280 A CN202110983280 A CN 202110983280A CN 113437425 A CN113437425 A CN 113437425A
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China
Prior art keywords
cavity
battery
isolation cavity
isolation
new energy
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CN202110983280.2A
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Chinese (zh)
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CN113437425B (en
Inventor
王冠琴
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Hefei Wisdom Dragon Machinery Design Co ltd
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Weifang University of Science and Technology
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Publication of CN113437425A publication Critical patent/CN113437425A/en
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Publication of CN113437425B publication Critical patent/CN113437425B/en
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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
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/64—Constructional details of batteries specially adapted for electric 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
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • 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
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • 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
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6561—Gases
    • H01M10/6563—Gases with forced flow, e.g. by blowers
    • 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
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • 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
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Business, Economics & Management (AREA)
  • Public Health (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Management (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

The application provides a new energy automobile's battery box, including box and case lid two parts, the box includes different functional regions again, and the battery holds the chamber and is located the middle zone, and it is the isolation cavity of difference all around, and when the condition of a fire appeared, the isolation cavity can block to a certain extent that the battery holds the chamber and contacts with other parts of new energy automobile, reduces the influence of the condition of a fire to other positions of automobile. Be equipped with drive arrangement in the battery box, this drive arrangement includes the drive roller, sets up ventilation channel in the drive roller, and the inside heat accessible ventilation channel of battery box discharges. When the battery holds the intracavity and appears the condition of a fire and lead to the temperature sudden rise, the drive roller is rotatory under the drive of balancing weight, closes the ventilation passageway, cuts off the way of outside oxygen suppliment. Simultaneously, the baffle in the actuating lever and the bracing piece linkage case lid that set up on the drive roller, the baffle rotates under the thrust effect of actuating lever, and the dry powder fire extinguishing agent in the dry powder intracavity scatters to the battery along the breach of baffle and holds the intracavity, and the prevention burning goes on, prevents to reburn.

Description

Battery box of new energy automobile
Technical Field
The invention relates to the technical field of new energy automobiles, in particular to a battery box of a new energy automobile.
Background
The new energy automobile mainly comprises a hybrid electric automobile and a pure electric automobile, wherein the pure electric automobile adopts a single storage battery as an energy storage power source, the storage battery is used as the energy storage power source, and the electric energy is provided for the motor through the battery, so that the automobile is pushed to run. The battery is the core part of new energy automobile, especially pure electric vehicles. The battery is usually placed in a mating battery box to reduce the adverse effects of external environmental factors on the performance of the battery.
The discharge performance of the battery is greatly influenced by the ambient temperature, the battery can continuously release heat in the running process of the new energy automobile, and if the high temperature of the external environment is superposed, the discharge performance of the battery can be seriously reduced. For this reason, the battery case is generally designed to have a non-hermetic structure to improve the heat dissipation effect of the battery. However, once the battery is burnt due to circuit failure, high temperature, nature and other factors, external air enters the battery box along the non-closed structure of the battery box, so that the fire spreading is accelerated, and even a vehicle body structure outside the battery box is burnt, so that irreparable economic loss is caused, and the personal safety is threatened. Based on above-mentioned adverse effect, can alleviate through the fire behaviour who improves battery itself, but the degree of difficulty of battery research and development is big, with high costs, and the cycle length, in order to find solution fast, designs a novel battery box structure and also is a fine entry point.
Disclosure of Invention
The invention provides a battery box of a new energy automobile, aiming at overcoming the defect that the battery box in the background technology cannot meet the dual requirements of ventilation and flame retardance.
The invention is realized through the following technical scheme, the application provides a battery box of a new energy automobile, which comprises a box body and a box cover;
the box body comprises a first isolation cavity, a second isolation cavity and a battery box main body, wherein the first isolation cavity and the second isolation cavity are independently arranged, the battery box main body is positioned between the first isolation cavity and the second isolation cavity, the battery box main body is sequentially provided with a third isolation cavity, a fourth isolation cavity and a battery accommodating cavity, the battery accommodating cavity is positioned between the third isolation cavity and the fourth isolation cavity, and the arrangement direction of the third isolation cavity, the fourth isolation cavity and the battery accommodating cavity is vertical to the arrangement direction of the first isolation cavity and the second isolation cavity;
a driving device is arranged in the third isolation cavity and comprises a driving roller and a connecting shaft sleeved with the driving roller, two ends of the connecting shaft are respectively fixed on the inner wall and the outer wall of the third isolation cavity, a plurality of ventilation channels penetrate through the driving roller in the axial direction, and the interval between every two adjacent ventilation channels is larger than the inner diameter of each ventilation channel; the inner wall and the outer wall of the third isolation cavity are provided with first vent holes matched with the vent channel, and the surfaces of the driving rollers, which are contacted with the inner wall of the third isolation cavity, are coated with bonding media;
a driving rod, a supporting rod and a balancing weight are sequentially arranged on the periphery of the driving roller, the balancing weight is connected with the driving roller through a flexible connecting piece, the driving rod and the supporting rod are correspondingly arranged, and the length of the driving rod is greater than that of the supporting rod;
the dry powder box is characterized in that a dry powder cavity is arranged in the box cover, a baffle is arranged at the bottom of the dry powder cavity and hinged to the dry powder cavity through a central shaft, a bonding medium is filled in a contact area of the baffle and the bottom of the dry powder cavity, a sliding groove is formed in the lower surface of the baffle and is divided into a first sliding groove and a second sliding groove by a partition plate, the free end of the driving rod is located in the first sliding groove, and the free end of the supporting rod is located in the second sliding groove.
Preferably, the first isolation cavity and the second isolation cavity are filled with super absorbent resin hydrogel, and a first through hole is formed in the connection part of the first isolation cavity, the second isolation cavity, the third isolation cavity and the fourth isolation cavity.
Preferably, a plurality of isolation plates are arranged in the first isolation cavity and the second isolation cavity, a plurality of second through holes are arranged on the isolation plates in a penetrating mode, and super absorbent resin hydrogel is filled between every two adjacent isolation plates.
Preferably, an inner cavity is formed in the balancing weight, a refrigerant is stored in the inner cavity, a water inlet communicated with the inner cavity is formed in the top of the balancing weight, a water tank is arranged at the bottom of the third isolation cavity, and an opening matched with the balancing weight is formed in the upper end face of the water tank.
Preferably, a gravity sensor is arranged at the position, corresponding to the opening, of the bottom of the water tank, and the gravity sensor is connected with an alarm system of the new energy automobile.
Preferably, the two ends of the connecting shaft are respectively sleeved with a sealing ring, the inner wall and the outer wall of the third isolation cavity are respectively provided with a connecting hole, the sealing rings are clamped in the connecting holes, and the surface of each sealing ring is coated with flame-retardant coating.
Preferably, the battery holds the intracavity and is provided with battery tray, can dismantle on the battery tray and be equipped with a plurality of backup pads, the backup pad will battery tray with the battery holds the space separation that the chamber formed and becomes a plurality of son that are used for holding the battery and holds the chamber, the dry powder chamber includes a plurality of sub-cavities, every the sub-cavity bottom all is provided with the partition baffle, be provided with a plurality of drive arrangement in the third isolation cavity, drive arrangement with the son holds the chamber one-to-one setting.
Preferably, a plurality of damping devices are fixed at the bottom of the battery accommodating cavity, a soft damping plate is further arranged between each damping device and the battery accommodating cavity, and the upper surface of each soft damping plate is coated with flame-retardant paint;
the damping device comprises a damping base, a damping cylinder is fixed on the damping base, a damping spring is arranged in the damping cylinder, a damping sleeve is detachably fixed on the damping cylinder, a supporting column is fixed at the center of the top in the damping sleeve, and the supporting column is located in the damping spring.
Preferably, the damping device further comprises a cushion pad, the cushion pad is fixed on the bottom wall inside the damping cylinder, and a cushion groove matched with the supporting column is formed in the upper surface of the cushion pad.
Preferably, the supporting plate comprises a transverse plate and a plurality of vertical plates arranged on the transverse plate at intervals, a plurality of concave parts are arranged on the surfaces of the vertical plates, and damping parts are uniformly fixed in the concave parts; a plurality of grooves are formed in two inner side walls, opposite to each other, of the battery accommodating cavity respectively, and damping parts are uniformly fixed in the grooves.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
in order to solve the drawback that current battery box can't satisfy ventilation and fire-retardant dual demand simultaneously, this application provides a new energy automobile's battery box. This battery box includes box and case lid two parts, and the box includes different functional regions again, and the battery holds the chamber and is located the middle zone, and it is the isolation cavity of difference all around, when the condition of a fire appears, keeps apart the cavity and can block to a certain extent that the battery holds the contact of chamber and other parts of new energy car, reduces the influence of the condition of a fire to other positions of car. The interior of this battery box is designed with drive arrangement, and this drive arrangement includes the drive roller, is provided with the ventilation passageway that communicates the external world and hold the chamber with the battery in the drive roller, and the inside heat accessible ventilation passageway of battery box discharges. When the battery holds the intracavity portion and appears the condition of a fire and lead to the temperature sudden rise, the drive roller is rotatory under the drive of balancing weight, closes the ventilation passageway, cuts off the route of outside oxygen suppliment. Simultaneously, the actuating lever and the bracing piece that set up on the drive roller can also link the baffle in the case lid, and the baffle will rotate under the thrust effect of actuating lever, and the dry powder fire extinguishing agent in the dry powder intracavity scatters to the battery along the breach of baffle and holds the intracavity, and stifling, cooling of dry powder fire extinguishing agent and have the chemical inhibition to the flame burning can prevent that the burning from going on to can prevent the after combustion. This application can satisfy ventilation when normal operating, the fire-retardant demand rapidly when the condition of a fire appears through the linkage of each mechanical component.
Drawings
For a clearer explanation of the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
Fig. 1 is a schematic top view of a battery box of a first new energy vehicle according to an embodiment of the present invention.
Fig. 2 is a schematic sectional structure view of a battery box of a first new energy vehicle in a direction a-a according to an embodiment of the present invention.
Fig. 3 is a schematic sectional structure view in the direction a-a of a first driving apparatus for a battery box of a new energy vehicle according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a driving device of a battery box of a first new energy vehicle according to an embodiment of the present invention.
Fig. 5 is a schematic bottom structure view of a baffle plate of a battery box of a first new energy vehicle according to an embodiment of the present invention.
Fig. 6 is a schematic view of an operating principle of a driving device of a battery box of a first new energy vehicle according to an embodiment of the present invention.
Fig. 7 is a schematic top view of a battery box of a second new energy vehicle according to an embodiment of the present invention.
Fig. 8 is a schematic structural diagram of a position of a vertical plate of a battery box of a second new energy vehicle according to an embodiment of the present invention.
Fig. 9 is a schematic structural diagram of a counterweight of a battery box of a third new energy vehicle according to an embodiment of the present invention.
Fig. 10 is a schematic structural diagram of a battery box of a third new energy vehicle according to an embodiment of the present invention.
Fig. 11 is a schematic structural diagram of a battery box of a fourth new energy vehicle according to an embodiment of the present invention.
Fig. 12 is a schematic structural position diagram of a seal ring of a battery box of a new energy vehicle according to an embodiment of the present invention.
Fig. 13 is a schematic top view of a battery box of a fifth new energy vehicle according to an embodiment of the present invention.
Fig. 14 is a schematic internal structure diagram of a battery box of a fifth new energy vehicle according to an embodiment of the present invention.
Fig. 15 is a schematic structural diagram of a use state of a drive device of a battery box of a fifth new energy vehicle according to an embodiment of the present invention.
Fig. 16 is a schematic structural diagram of a battery box of a sixth new energy vehicle according to an embodiment of the present invention.
Fig. 17 is an external structural schematic view of a damping device of a battery box of a sixth new energy vehicle according to an embodiment of the present invention.
Fig. 18 is an internal structural schematic view of a damping device of a battery box of a sixth new energy vehicle according to an embodiment of the present invention.
Fig. 19 is a schematic structural view of a support plate of a battery box of a sixth new energy vehicle according to an embodiment of the present invention.
Fig. 20 is a schematic top view of a battery box of a sixth new energy vehicle according to an embodiment of the present invention.
Shown in the figure:
1-box body, 2-box cover, 3-battery tray, 4-support plate, 5-damping device, 6-soft damping plate, 7-damping component and 8-driving device;
11-a first isolation cavity, 12-a second isolation cavity, 13-a third isolation cavity, 14-a fourth isolation cavity, 15-a battery accommodating cavity, 16-a first through hole, 17-an isolation plate, 21-a dry powder cavity, 22-a baffle, 23-a central shaft, 24-a first chute, 25-a second chute, 41-a transverse plate, 42-a vertical plate, 51-a shock absorption base, 52-a shock absorption cylinder, 53-a shock absorption sleeve, 54-a shock absorption spring, 55-a support column, 56-a buffer pad, 57-a buffer groove, 81-a drive roller, 82-a connecting shaft, 83-a ventilation channel, 84-a drive rod, 85-a support rod, 86-a balancing weight and 87-a flexible connecting piece;
131-a first vent hole, 132-a water tank, 133-an opening, 134-a gravity sensor, 151-a sub-containing cavity, 152-a groove, 171-a second through hole, 211-a sub-cavity, 221-a partition plate, 222-a separation baffle plate, 421-a concave part, 821-a sealing ring, 861-an inner cavity, 862-a refrigerant and 863-a water inlet hole.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without making creative efforts based on the embodiments of the present invention, shall fall within the protection scope of the present invention.
To current battery box can't compromise heat dissipation and fire-retardant conflict point, this application provides a new energy automobile's battery box. This battery box includes box 1 and case lid 2, box 1 can divide into according to the function and keeps apart cavity and battery and hold the chamber, and wherein, keeps apart the cavity setting around the battery holds the chamber, in case the battery holds the intracavity and appears the condition of a fire, keeps apart the cavity all around and will respond to the condition of a fire rapidly, changes the battery box into the closed state by open state, and isolated outside air prevents further stretching of the condition of a fire.
Specifically, referring to fig. 1, a schematic top view of a battery box of a new energy vehicle according to an embodiment of the present invention is shown. As shown in the attached drawing 1, the box body 1 comprises a first isolation cavity 11 and a second isolation cavity 12 which are independently arranged, and a battery box main body which is arranged between the first isolation cavity 11 and the second isolation cavity 12, wherein the battery box main body is sequentially provided with a third isolation cavity 13 and a fourth isolation cavity 14, and is arranged between the third isolation cavity 13 and the fourth isolation cavity 14, and a battery holding cavity 15 is arranged between the third isolation cavity 13 and the fourth isolation cavity 14, the arrangement direction of the third isolation cavity 13 and the fourth isolation cavity 14 and the arrangement direction of the battery holding cavity 15 are perpendicular to the arrangement direction of the first isolation cavity 11 and the second isolation cavity 12.
The first isolation cavity 11 and the second isolation cavity 12 located at the two sides of the battery box main body belong to a closed structure, gas exchange is not carried out with the outside, when a fire condition appears in the battery holding cavity 15, the battery holding cavity 15 can be isolated from the outside to a certain extent, and the fire spreading is slowed down. The first isolation cavity 11 and the second isolation cavity 12 can be filled with water, flame retardant and the like, and the functions of cooling and flame retarding are achieved. In addition, also can fill inert gas in first isolation cavity 11 and the second isolation cavity 12 to set up check valve on the inner wall, when the battery holds the inside overheated time in chamber 15, the heat can conduct rapidly to first isolation cavity 11 and the second keeps apart inside chamber 12, and inert gas wherein is heated the inflation, and it holds the chamber 15 inside to get into the battery from check valve under the high pressure effect, reduces the battery and holds the inside oxygen content in chamber 15, has certain promotion effect to the flame retardant efficiency of battery box.
Referring to fig. 2, fig. 3, fig. 4 and fig. 5, a schematic cross-sectional structure view of a battery box of a new energy vehicle in a direction of a-a according to an embodiment of the present invention, a schematic structural view of a driving device of a battery box of a new energy vehicle according to an embodiment of the present invention in a use state, a schematic structural view of a driving device of a battery box of a new energy vehicle according to an embodiment of the present invention, and a schematic structural view of a bottom surface of a baffle plate of a battery box of a new energy vehicle according to an embodiment of the present invention are shown. It can be seen from fig. 2-5 that, in this application, be provided with drive arrangement 8 in third isolation cavity 13, drive arrangement 8 is the core component of this application, can be under the state that the condition of a fire appears, change the battery box into airtight state by the ventilation cooling state, isolated external oxygen, simultaneously, drive arrangement 8 can also link the baffle 22 of 2 bottoms of case lid, and the back is opened to baffle 22, and the dry powder that scatters in the dry powder chamber 21 can be fast with the source of a fire in the battery accommodation chamber 15 and put out.
Specifically, drive arrangement 8 includes drive roller 81, and with the connecting axle 82 that drive roller 81 cup jointed, the both ends of connecting axle 82 are fixed respectively on the inner wall and the outer wall of cavity 13 are kept apart to the third, and the inner wall of cavity 13 is kept apart to the third indicates to be close to the battery and holds the wall body of cavity 15 one side, and the outer wall of cavity 13 is kept apart to the third indicates to keep away from the battery and holds the wall body of cavity 15 one side. Run through on the axial direction of drive roller 81 and be provided with a plurality of ventilation passageways 83, be provided with on the inner wall of third isolation cavity 13 and the outer wall with the first ventilation hole 131 of ventilation passageway 83 assorted, adjacent two interval between the ventilation passageway 83 is greater than the internal diameter of ventilation passageway 83, like this, when drive roller 81 rotates, the part outside first ventilation hole 131 can shelter from ventilation passageway 83 completely, and cavity 13 and whole battery box are all got into airtight state are kept apart to the third.
The surface of the driving roller 81, which is in contact with the inner wall of the third isolation cavity 13, is coated with an adhesive medium, the periphery of the driving roller 81 is provided with a balancing weight 86, the balancing weight 86 is connected with the driving roller 81 through a flexible connecting piece 87, the fixed position of the flexible connecting piece 87 on the driving roller 81 is located above the horizontal axis of the driving roller 81, and the balancing weight 86 can pull the driving roller 81 to turn downwards under the condition that the driving roller 81 is free from other external forces.
Under normal conditions, the driving roller 81 is fixedly connected with the inner wall of the third isolation cavity 13 under the action of the bonding medium, the bonding force of the bonding medium offsets the power of the counterweight block 86 for the driving roller 81 to rotate downwards, the driving device 8 is in a relatively static state, at the moment, the battery box is in an open state, and external air can enter and exit the battery accommodating cavity 15 from the ventilation channel 83 and the first ventilation hole 131 to achieve the ventilation and heat exchange effects. When the battery accommodating cavity 15 is ignited and burned, and the temperature rises suddenly, the heat in the space can be rapidly conducted to the inner wall of the third isolating cavity 13, the bonding medium on the inner wall of the third isolating cavity 13 is heated and melted, the bonding force acting on the driving roller 81 disappears, at the moment, the driving roller 81 can rotate under the action of the balancing weight 86, the ventilation channel 83 is staggered with the first ventilation hole 131, the ventilation channel 83 is completely shielded by the part except the first ventilation hole 131, at the moment, the third isolating cavity 13 and the whole battery box are in a closed state, and the combustible in the battery accommodating cavity 15 can be isolated from the outside air.
In the embodiment of the present application, the surface of the driving roller 81 contacting the inner wall of the third isolation chamber 13 is coated with the adhesive medium, so as to prevent the adhesive medium from entering the ventilation channel 83 and the first ventilation hole 131 and blocking the ventilation channel. The bonding medium in this embodiment may be a hot melt adhesive or a fusible alloy. Specifically, the hot melt adhesive can be an EVA hot melt adhesive, the basic resin of the EVA hot melt adhesive is formed by copolymerizing ethylene and vinyl acetate VA at high temperature and high pressure, the softening point of the EVA hot melt adhesive is about 95 ℃, the melting temperature is 160 ℃ to 180 ℃, the melting point of the EVA hot melt adhesive can be adjusted by the proportion of the vinyl acetate, and the higher the proportion of the vinyl acetate, the lower the melting point of the EVA hot melt adhesive. If the VA percent is 19-20 percent, the melting point of the EVA hot melt adhesive is reduced to 70 ℃, and if the VA percent is 40 percent, the melting point of the EVA hot melt adhesive is reduced to 50 ℃. Therefore, the melting temperature range of the EVA hot melt adhesive is wide, the triggering condition of the driving device can be completely met, and the specific component proportion of the EVA hot melt adhesive can be adjusted according to actual needs.
The bonding medium in other embodiments of the present application may also be a fusible alloy, which is often widely used as a solder, and the bismuth-based fusible alloy has a melting point of 47 ℃, 70 ℃, 92 ℃, 120 ℃ and other choices, and generally, the bismuth-tin low-melting-point alloy has a melting point of only 70-160 ℃, and has good fluidity after being heated and melted. Like hot melt adhesives, fusible alloys have a wide range of applicable temperatures, and their ability to melt upon exposure to heat can also serve as a trigger condition for the drive mechanism of the present application.
In addition, in addition to coating the adhesive medium between the driving roller 81 and the third isolation chamber 13, an electronic component may be used as a trigger member of the driving device. For example, by using the electromagnetic principle, the driving roller 81 and the third isolation cavity 13 are in an adsorption state at normal temperature, and when the temperature sensor detects that the temperature inside the third isolation cavity 13 or the temperature of the inner wall is higher than a preset threshold, the power supply is cut off, so that the driving roller 81 and the third isolation cavity 13 are separated. The trigger part has the advantages of accurate temperature measurement and quick response, but the device is high in cost and complex in installation, and can be selected according to actual application requirements.
In addition, this application except through closing the ventilation passageway in order to cut off the way of outside oxygen suppliment, can also trigger the dry powder device in battery holding chamber 15 simultaneously, and the dry powder that falls scattered can further keep apart the combustible substance, and two means synergism can reach quick fire-retardant purposes. Specifically, the driving roller 81 is further provided with a driving rod 84 and a supporting rod 85 for producing a linkage action with the baffle 22 in the box cover 2. The driving rod 84 and the supporting rod 85 are correspondingly arranged, and the length of the driving rod 84 is greater than that of the supporting rod 85. A dry powder cavity 21 is arranged in the box cover 2, dry powder extinguishing agents are stored in the dry powder cavity 21, a baffle plate 22 is arranged at the bottom of the dry powder cavity 21, the baffle plate 22 is hinged to the dry powder cavity 21 through a central shaft 23, a bonding medium is filled in a contact area between the baffle plate 22 and the bottom of the dry powder cavity 21, a sliding groove is formed in the lower surface of the baffle plate 22 and is divided into a first sliding groove 24 and a second sliding groove 25 by a partition plate 221, the free end of the driving rod 84 is located in the first sliding groove 24, and the free end of the supporting rod 85 is located in the second sliding groove 25.
Referring to fig. 6, a schematic diagram of a driving apparatus of a battery box of a new energy vehicle according to an embodiment of the present invention is shown. Under normal conditions, the free end of the driving rod 84 is located in the first sliding groove 24, the free end of the supporting rod 85 is located in the second sliding groove 25, the driving rod 84, the supporting rod 85 and the sliding grooves form a triangular stable structure, and the baffle 22 can be stabilized at the bottom of the dry powder cavity 21 under the action of the bonding medium to prevent the dry powder extinguishing agent in the dry powder cavity 21 from scattering. After the temperature rises suddenly, the driving device 8 rotates downwards, meanwhile, the bonding medium at the position of the baffle 22 is heated and melted, the driving rod 84 and the supporting rod 85 move along the first sliding groove 24 and the second sliding groove 25 respectively along with the rotation of the driving roller 81, after the baffle 22 loses stable triangular supporting force and bonding force, the baffle 22 rotates along the central shaft 23 under the thrust action of the driving rod 84, a gap appears between the baffle 22 and the dry powder cavity 21, the dry powder extinguishing agent in the dry powder cavity 21 scatters to the battery accommodating cavity 15 along the gap, the dry powder extinguishing agent is suffocated, cooled and has a chemical inhibition effect on flame combustion, the combustion can be prevented from being carried out, and the re-combustion can be prevented.
In this embodiment, the connection line of the contact point of the driving rod 84 and the supporting rod 85 with the driving roller 81 is perpendicular to the axis of the driving roller 81, i.e. the driving rod 84 and the supporting rod 85 are located on the same peripheral line of the driving roller 81. Thus, when the driving roller 81 rotates, the driving lever 84 can be ensured to move along the sliding track of the supporting lever 85. The baffle 22 is disposed at the bottom of the dry powder chamber 21, and the edge portion thereof extends to above the third isolation chamber 13, so as to form a linkage mechanism with the driving rod 84 and the supporting rod 85. In addition, in order to enhance the ventilation effect in the battery accommodating cavity 15 and the stability of the linkage of the baffle 22, a similar driving device can be correspondingly arranged in the fourth isolation cavity 14 in the preferred embodiment of the present application. In this case, the baffle 22 needs to be provided with a third sliding slot and a fourth sliding slot to cooperate with the linkage of the driving device in the fourth isolation chamber 14. The working principle and working process of the driving device arranged in the fourth isolation chamber 14 are similar to those of the existing driving device, and are not described in detail here.
In addition, the bonding medium at the baffle 22 acts the same as the bonding medium at the drive roller 81, and the composition is similar, and will not be described again. The main component of the dry powder extinguishing agent in the embodiment can comprise K2CO3、KHCO3、NaCl、KCl、NH42SO4、NH4HSO4、NaHCO3、K4FeCN6·3H2O, etc., the dried ultrafine powder has a sufficiently large contact area with the flame, and the chain combustion reaction of combustion is terminated to extinguish the flame. Meanwhile, the main components of the dry powder extinguishing agent are decomposed in a combustion flame in a heat absorption way, and the dry powder extinguishing agent has a good cooling effect.
In order to solve the drawback that current battery box can't satisfy ventilation and fire-retardant dual demand simultaneously, this application provides a new energy automobile's battery box. This battery box includes box 1 and 2 parts of case lid, and box 1 includes different function intervals again, and battery holds chamber 15 and is located the middle zone, and it is the isolation cavity of difference all around, when the condition of a fire appears, keeps apart the cavity and can block to a certain extent that the battery holds the contact of chamber 15 with other parts of new energy car, reduces the influence of the condition of a fire to other positions of car. The interior of this battery box is designed with drive arrangement 8, and this drive arrangement 8 includes drive roller 81, is provided with the ventilation passageway 83 that communicates external world and battery and hold chamber 15 in the drive roller 81, and the inside heat accessible ventilation passageway 83 of battery box discharges. When the temperature rises suddenly due to the fire inside the battery accommodating cavity 15, the driving roller 81 is driven by the counterweight block 86 to rotate, the ventilation channel 83 is closed, and the external oxygen supply path is cut off. Meanwhile, the driving rod 84 and the supporting rod 85 arranged on the driving roller 81 can also be linked with the baffle 22 in the box cover 2, the baffle 22 can rotate under the thrust action of the driving rod 84, dry powder extinguishing agent in the dry powder cavity 21 scatters to the battery accommodating cavity 15 along the notch of the baffle 22, the dry powder extinguishing agent is suffocated, cooled and has a chemical inhibition effect on flame combustion, and combustion can be prevented from being carried out. This application can satisfy ventilation when normal operating, the fire-retardant demand rapidly when the condition of a fire appears through the linkage of each mechanical component.
Prevention of sustained combustion of combustibles is generally achieved by three approaches, namely, reducing reactant concentration, inhibiting reactant contact, and reducing reactant temperature. The present application reduces the concentration of reactants and inhibits the contact of reactants by the open-closed design of the driving device 8 and the linked design of the driving device and the baffle plate 22. Temperature is also a necessary condition for the continued combustion of the combustible, which terminates the combustion reaction when the temperature in the system falls below the ignition point. Thus, the continuous reduction of the temperature of the reactants is also one of the important means of preventing the continuous combustion of the combustible.
The super absorbent resin is a synthetic resin which can absorb a large amount of water and swell, and can keep the water not to flow out, and generally can absorb the water which is more than 100 times of the volume of the resin, and the highest water absorption can reach more than 1000 times. The super absorbent resin can be swelled into hydrogel immediately after absorbing water, has excellent water retention performance and reversible water absorption performance, and the super absorbent resin hydrogel can be dehydrated at high temperature to recover the water absorption performance. In the preferred embodiment of the present application, the super absorbent resin hydrogel can be used as a storage medium for water, and the super absorbent resin hydrogel can stably exist at normal temperature, can be dehydrated at high temperature, and can reduce the ambient temperature. The ignition and combustion of lithium batteries are mainly caused by evaporation of an electrolyte due to overcharge, overdischarge, or the like, thereby generating a combustible gas. Vinyl carbonate is the major constituent of most lithium battery electrolytes, having a flash point of 160 c and a flash point of 465 c, and when the lithium battery burns, its ambient temperature will rise rapidly. The super absorbent resin hydrogel can release about 50% of water at 150 ℃, and completely release water at 450-500 ℃. Therefore, the super absorbent resin hydrogel is feasible when used in the application scene.
Specifically, referring to fig. 7, a schematic top view of a battery box of a second new energy vehicle according to an embodiment of the present invention is shown. As shown in fig. 7, in this embodiment, the first isolation cavity 11 and the second isolation cavity 12 are filled with super absorbent resin hydrogel, a first through hole 16 is formed at a connection position between the first isolation cavity 11, the second isolation cavity 12, the third isolation cavity 13, and the fourth isolation cavity 14, and water vapor released by the super absorbent resin hydrogel can fill each isolation cavity through the first through hole 16, so as to achieve the effect of uniform cooling. The super absorbent resin in this embodiment may be a high absorbent resin such as polyacrylamide, starch acrylate polymer, starch-acrylonitrile graft copolymer, acrylamide-acrylonitrile-acrylic acid terpolymer, or the like. Further, the lithium ion battery is a chemical combustion in which chemical reactions continue to occur and combustion continues if continuous cooling is not given. In order to improve the continuity of the super absorbent resin hydrogel water supply, please refer to fig. 8, which is a schematic diagram illustrating a position structure of a vertical plate of a battery box of a second new energy vehicle according to an embodiment of the present invention, as can be seen from fig. 8, a plurality of isolation plates 17 may be disposed in both the first isolation cavity 11 and the second isolation cavity 12, a plurality of second through holes 171 are disposed on the isolation plates 17 in a penetrating manner, and the super absorbent resin hydrogel is filled between two adjacent isolation plates 17. The first isolation cavity 11 and the second isolation cavity 12 are separated into different temperature areas by arranging the isolation plate 17, the temperature of the different areas is gradually increased from near to far, and the water loss amount of the super absorbent resin hydrogel is gradually increased.
To further enhance the cooling effect, please refer to fig. 9 and fig. 10, which are schematic structural diagrams of a counterweight of a battery box of a third new energy vehicle according to an embodiment of the present invention and a schematic structural diagram of a battery box of a third new energy vehicle according to an embodiment of the present invention. As can be seen from fig. 9 and 10, in the embodiment of the present application, an inner cavity 861 is disposed in the weight block 86, a refrigerant 862 is stored in the inner cavity 861, and a water inlet 863 communicating with the inner cavity 861 is disposed at the top of the weight block 86. The bottom of the third isolation cavity 13 is further provided with a water tank 132, an opening 133 matched with the weight block 86 is arranged on the upper end face of the water tank 132, the size of the opening 133 is larger than or equal to that of the weight block 86, and the weight block 86 can enter the water tank 132 after falling. In this embodiment, the refrigerant 862 may be a crystalline hydrate, such as sodium carbonate decahydrate, calcium chloride hexahydrate, or the like, which has an obvious endothermic effect when dissolved in water. Normally, the weight 86 is located at the upper portion of the tank 132, and the refrigerant 862 is separated from water. When a fire occurs, the weight block 86 falls into the water tank 132, water in the water tank 132 can enter the inner cavity 861 through the water inlet hole 863, and the refrigerant 862 can react with the water to absorb heat, thereby further reducing the ambient temperature.
In addition, to further optimize the device, the weight 86 in the normal state can be clamped at the opening 133, as shown in fig. 11, and at this time, the flexible connecting member 87 connected with the weight 86 is in the stretched state. In this design, the weight 86 can also serve as a cover for the opening 133 to prevent water in the inner cavity 861 from overflowing due to shaking of the vehicle body, and at the same time, the weight 86 can also reduce collision of the vehicle body with the third isolation chamber 13 during operation.
In other embodiments of the present application, a gravity sensor 134 may be further added to a position corresponding to the opening 133 at the bottom of the water tank 132, and the gravity sensor 134 is disposed at the bottom of the water tank 132 and connected to an alarm system of the new energy vehicle. When the height that balancing weight 86 descends is big enough, balancing weight 86 can contact with the bottom of water tank 132, and the detected data of gravity sensor 134 can increase unusually this moment, and new energy automobile's alarm system can judge this unusual data to be because balancing weight 86 that the condition of a fire triggered drops, and after receiving the detected data of gravity sensor 134, alarm system can send out warning signal at the car central control end to the driver in time takes remedial action.
Further, in order to further enhance the sealing performance of the battery box, as shown in fig. 12, sealing rings 821 are further sleeved at two ends of the connecting shaft 82, connecting holes are respectively formed in the inner wall and the outer wall of the third isolation cavity 13, the sealing rings 821 are clamped in the connecting holes, and the surface of the sealing rings 821 is coated with a flame retardant coating. The flame retardant coating in this embodiment may include the following ingredients: the coating comprises water-based ethylene-vinyl acetate, water-based resin, a flame retardant, a dispersing agent, a coupling agent, silicon dioxide powder and the like, and in other embodiments of the application, the flame-retardant coating can also adopt coating components with a flame-retardant function, which are commonly available in the market.
Further preferably, referring to fig. 13, fig. 14 and fig. 15, a schematic top view structure diagram of a battery box of a fifth new energy vehicle according to an embodiment of the present invention, a schematic internal structure diagram of the battery box of the fifth new energy vehicle according to the embodiment of the present invention, and a schematic use state diagram of a driving apparatus of the battery box of the fifth new energy vehicle according to the embodiment of the present invention are shown. As can be known from the accompanying drawings 13, 14 and 15, the battery holds and is provided with battery tray 3 in the chamber 15, can dismantle on the battery tray 3 and be equipped with a plurality of backup pads 4, backup pad 4 will battery tray 3 with the space that battery holds the chamber 15 formation is separated into a plurality of son that are used for holding the battery and is held chamber 151, dry powder chamber 21 includes a plurality of subcavities 211, every subcavities 211 bottom all is provided with separates baffle 222, be provided with a plurality of drive arrangement 8 in the third isolation cavity 13, drive arrangement 8 with the son holds chamber 151 one-to-one setting. In this embodiment, the battery accommodating chamber 15 can be divided into a plurality of sub-accommodating chambers 151, and one driving device 8 is disposed at a corresponding position of each sub-accommodating chamber 151, so that the ignition area can be accurately detected by the fine dividing method, the dry powder extinguishing agent can be accurately applied when a fire occurs, and meanwhile, the divided supporting plate 4 can further block the spread of the fire.
When the automobile runs, the battery and the inner wall of the battery box are inevitably collided, the battery jolts up and down due to the fact that a road is uneven, and the battery is damaged and electrolyte is evaporated due to violent vibration, so that combustion occurs. Therefore, adding a shock absorbing function to the battery box is also one of the methods of reducing the battery burning probability.
Specifically, please refer to fig. 16, which is a schematic structural diagram of a battery box of a sixth new energy vehicle according to an embodiment of the present invention. As shown in fig. 16, in other embodiments of the present application, a plurality of damping devices 5 are fixed at the bottom of the battery accommodating cavity 15, a soft damping plate 6 is further disposed between the damping devices 5 and the battery accommodating cavity 15, and an upper surface of the soft damping plate 6 is coated with a flame retardant coating. The bumping of the car body is damped by the damping device 5 and the soft damping plate 6, so that the vibration of the battery tray 3 and the battery is greatly reduced, and the battery is protected.
Specifically, referring to fig. 17 and 18, an external structural schematic diagram of a damping device of a battery box of a sixth new energy vehicle according to an embodiment of the present invention and an internal structural schematic diagram of the damping device of the battery box of the sixth new energy vehicle according to the embodiment of the present invention are shown, respectively. As shown in fig. 17 and 18, the damping device 5 includes a damping base 51, a damping cylinder 52 is fixed on the damping base 51, a damping spring 54 is disposed in the damping cylinder 52, a damping sleeve 53 is detachably fixed on the damping cylinder 52, a supporting column 55 is fixed at a central position of a top portion in the damping sleeve 53, and the supporting column 55 is located in the damping spring 54. The support column 55 supports the damping spring 54, so that the damping spring 54 is prevented from being deformed and damaged due to high pressure.
Further, the damping device 5 further comprises a buffer pad 56, the buffer pad 56 is fixed on the bottom wall inside the damping cylinder 52, a buffer groove 57 matched with the support column 55 is arranged on the upper surface of the buffer pad 56, the buffer pad 56 buffers the support column 55, and the support column 55 is prevented from vibrating when reaching the bottom of the damping cylinder 52.
Further preferably, referring to fig. 19, which is a schematic structural diagram of a support plate of a battery box of a sixth new energy automobile according to an embodiment of the present invention, as can be seen from fig. 19, the support plate 4 includes a horizontal plate 41 and a plurality of vertical plates 42 arranged on the horizontal plate 41 at intervals, a plurality of concave portions 421 are arranged on surfaces of the vertical plates 42, and the damping members 7 are uniformly fixed in the concave portions 421; referring to fig. 20, which is a schematic top view illustrating a battery box of a sixth new energy vehicle according to an embodiment of the present invention, as can be seen from fig. 20, a plurality of grooves 152 are respectively disposed on two inner side walls opposite to the battery accommodating cavity 15, and the damping members 7 are uniformly fixed in the grooves 152. The shock absorption parts 7 are distributed between the battery and the vertical plates 42, and buffer the left-right shaking of the battery, so that the collision between the battery and the collision between the battery and the inner wall are avoided. The damping member may be a damping spring, a soft cushion, or the like, or may be provided in the same manner as the damping device 5, and this embodiment is not particularly limited.
Of course, the above description is not limited to the above examples, and the undescribed technical features of the present invention can be implemented by or using the prior art, and will not be described herein again; the above embodiments are merely for illustrating the technical solutions of the present invention and not for limiting the present invention, and the present invention has been described in detail with reference to the preferred embodiments, and those skilled in the art should understand that changes, modifications, additions or substitutions which are made by those skilled in the art within the spirit of the present invention are also within the scope of the claims of the present invention.

Claims (10)

1. The battery box of the new energy automobile is characterized by comprising a box body (1) and a box cover (2);
the box body (1) comprises a first isolation cavity (11), a second isolation cavity (12) and a battery box main body, wherein the first isolation cavity (11) and the second isolation cavity (12) are independently arranged, the battery box main body is positioned between the first isolation cavity (11) and the second isolation cavity (12), the battery box main body is sequentially provided with a third isolation cavity (13), a fourth isolation cavity (14) and a battery accommodating cavity (15) positioned between the third isolation cavity (13) and the fourth isolation cavity (14), and the arrangement direction of the third isolation cavity (13), the fourth isolation cavity (14) and the battery accommodating cavity (15) is vertical to the arrangement direction of the first isolation cavity (11) and the second isolation cavity (12);
a driving device (8) is arranged in the third isolation cavity (13), the driving device (8) comprises a driving roller (81) and a connecting shaft (82) sleeved with the driving roller (81), two ends of the connecting shaft (82) are respectively fixed on the inner wall and the outer wall of the third isolation cavity (13), a plurality of ventilation channels (83) penetrate through the driving roller (81) in the axial direction, and the interval between every two adjacent ventilation channels (83) is larger than the inner diameter of each ventilation channel (83); the inner wall and the outer wall of the third isolation cavity (13) are provided with first ventilation holes (131) matched with the ventilation channel (83), and the surfaces of the driving roller (81) contacted with the inner wall of the third isolation cavity (13) are coated with bonding media;
a driving rod (84), a supporting rod (85) and a balancing weight (86) are sequentially arranged on the periphery of the driving roller (81), the balancing weight (86) is connected with the driving roller (81) through a flexible connecting piece (87), the driving rod (84) and the supporting rod (85) are correspondingly arranged, and the length of the driving rod (84) is greater than that of the supporting rod (85);
be provided with dry powder chamber (21) in case lid (2), dry powder chamber (21) bottom is provided with baffle (22), baffle (22) through center pin (23) with dry powder chamber (21) are articulated, baffle (22) with the contact area of dry powder chamber (21) bottom is filled with and is glued the medium, the lower surface of baffle (22) is provided with the spout, the spout is separated for first spout (24) and second spout (25) by baffle (221), the free end of actuating lever (84) is located in first spout (24), the free end of bracing piece (85) is located in second spout (25).
2. The battery box of the new energy automobile according to claim 1, wherein the first isolation cavity (11) and the second isolation cavity (12) are filled with super absorbent resin hydrogel, and a first through hole (16) is formed at a connection position between the first isolation cavity (11), the second isolation cavity (12), the third isolation cavity (13) and the fourth isolation cavity (14).
3. The battery box of the new energy automobile as claimed in claim 1, wherein a plurality of isolation plates (17) are arranged in each of the first isolation cavity (11) and the second isolation cavity (12), a plurality of second through holes (171) are arranged on each isolation plate (17) in a penetrating manner, and a high water absorbent resin hydrogel is filled between two adjacent isolation plates (17).
4. The battery box of the new energy automobile as claimed in claim 1, wherein an inner cavity (861) is formed in the counterweight block (86), a refrigerant (862) is stored in the inner cavity (861), a water inlet hole (863) communicated with the inner cavity (861) is formed in the top of the counterweight block (86), a water tank (132) is formed in the bottom of the third isolation cavity (13), and an opening (133) matched with the counterweight block (86) is formed in the upper end face of the water tank (132).
5. The battery box of the new energy automobile according to claim 4, characterized in that a gravity sensor (134) is arranged at the bottom of the water tank (132) corresponding to the opening (133), and the gravity sensor (134) is connected with an alarm system of the new energy automobile.
6. The battery box of the new energy automobile as claimed in claim 1, wherein sealing rings (821) are respectively sleeved at two ends of the connecting shaft (82), connecting holes are respectively formed in the inner wall and the outer wall of the third isolation cavity (13), the sealing rings (821) are clamped in the connecting holes, and the surface of each sealing ring (821) is coated with a flame retardant coating.
7. The battery box of the new energy automobile as claimed in claim 1, wherein a battery tray (3) is arranged in the battery accommodating cavity (15), a plurality of support plates (4) are detachably arranged on the battery tray (3), the space formed by the battery tray (3) and the battery accommodating cavity (15) is divided into a plurality of sub accommodating cavities (151) for accommodating batteries by the support plates (4), the dry powder cavity (21) comprises a plurality of sub cavities (211), a separation baffle (222) is arranged at the bottom of each sub cavity (211), a plurality of driving devices (8) are arranged in the third isolation cavity (13), and the driving devices (8) and the sub accommodating cavities (151) are arranged in a one-to-one correspondence manner.
8. The battery box of the new energy automobile according to claim 1, characterized in that a plurality of shock absorbing devices (5) are fixed at the bottom of the battery accommodating cavity (15), a soft shock absorbing plate (6) is further arranged between the shock absorbing devices (5) and the battery accommodating cavity (15), and the upper surface of the soft shock absorbing plate (6) is coated with a flame retardant coating;
damping device (5) are including vibration damping mount (51), be fixed with damper cylinder (52) on vibration damping mount (51), be provided with damping spring (54) in damper cylinder (52), the last detachable of damper cylinder (52) is fixed with shock attenuation cover (53), top central point puts and is fixed with support column (55) in shock attenuation cover (53), support column (55) are located in damping spring (54).
9. The battery box of the new energy automobile as claimed in claim 8, wherein the shock absorbing device (5) further comprises a buffer pad (56), the buffer pad (56) is fixed on the inner bottom wall of the shock absorbing cylinder (52), and the upper surface of the buffer pad (56) is provided with a buffer groove (57) matched with the supporting column (55).
10. The battery box of the new energy automobile according to claim 7, characterized in that the supporting plate (4) comprises a transverse plate (41) and a plurality of vertical plates (42) arranged on the transverse plate (41) at intervals, a plurality of concave parts (421) are arranged on the surfaces of the vertical plates (42), and the damping parts (7) are uniformly fixed in the concave parts (421); the battery accommodating cavity is characterized in that a plurality of grooves (152) are respectively formed in two opposite inner side walls of the battery accommodating cavity (15), and damping parts (7) are uniformly fixed in the grooves (152).
CN202110983280.2A 2021-08-25 2021-08-25 Battery box of new energy automobile Active CN113437425B (en)

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CN118040160B (en) * 2024-03-08 2024-07-26 湖南湘华储能科技有限公司 Prevent overheated energy storage battery box of inside electric core

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