CN111490202A - New energy vehicle power battery emergency treatment equipment - Google Patents

New energy vehicle power battery emergency treatment equipment Download PDF

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Publication number
CN111490202A
CN111490202A CN202010302905.XA CN202010302905A CN111490202A CN 111490202 A CN111490202 A CN 111490202A CN 202010302905 A CN202010302905 A CN 202010302905A CN 111490202 A CN111490202 A CN 111490202A
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power battery
groove
battery
conducting
plate
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CN202010302905.XA
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Chinese (zh)
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刘正国
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Individual
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Individual
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Priority to CN202010302905.XA priority Critical patent/CN111490202A/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
    • 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
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
    • 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
    • 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
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
    • 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
    • H01M10/63—Control systems
    • H01M10/635—Control systems based on ambient temperature
    • 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
    • H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
    • 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
    • H01M10/6554—Rods or plates
    • 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
    • H01M10/6567—Liquids
    • H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2200/00—Safety devices for primary or secondary batteries
    • H01M2200/10—Temperature sensitive devices
    • 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 Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Power Engineering (AREA)
  • Sustainable Development (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Energy (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The invention discloses a new energy vehicle power battery emergency treatment device, a battery cabin is provided with two layers, a cooling control groove is arranged on an inner layer, when a battery fails, the cooling control groove on the inner layer can utilize liquid water to cool the battery to avoid battery combustion, meanwhile, electric energy of the battery is transmitted to saline water in an external insulating shell through liquid water and a heat conduction conductive shell to discharge the battery, when the temperature rises sharply, a first installation bottom plate is popped up through the fusing operation of a hot-fusing lock head, then the failed battery is popped out of a vehicle through a squeezing plate, so that the combustion of the vehicle caused by the battery failure is avoided When the temperature of the battery cannot be controlled, the battery is quickly ejected out of the vehicle, and the vehicle is prevented from being damaged by combustion.

Description

New energy vehicle power battery emergency treatment equipment
Technical Field
The invention belongs to the technical field of new energy battery equipment; in particular to a new energy vehicle power battery emergency treatment device.
Background
With the technological progress and the development of society, new energy vehicles are used more and more, and among various new energy vehicles, the most common is the vehicle driven by a pure electric mode. At present, accidents of fire and battery explosion of power batteries of several pure electric vehicles occur in the using process and the charging process, and the number of the accidents of the fire of the power batteries is increased correspondingly with the increase of the market share of new energy vehicles, so that how to properly handle the fire of the power batteries becomes a new problem. To date, however, various automobile manufacturers have not proposed a good way to address this problem. The existing new energy vehicle power battery ignition processing mode is to use a fire extinguisher to extinguish fire, but if the fire of the power battery is not well controlled, the fire is easy to explode, which can seriously endanger the health of rescue workers, and for the automobile which is a place with a small space, the consequences caused by the new energy vehicle power battery ignition are more serious. In addition, a certain potential safety hazard exists in the prior art when the fire extinguisher is singly used for fighting fire, and because the main body for firing the fire is a new energy vehicle power battery, the battery can continuously discharge in the process of fire extinguishing, so that secondary danger can occur at any time.
The new energy vehicle power battery emergency treatment equipment with the patent number of CN108553773A and the operation method thereof disclose that the equipment comprises a base, a water tank and an upright post, wherein the upright post is fixedly connected with the base and fixed at the rear side of the base, and the lower part of the upright post is attached to the rear side surface of the water tank; the lifting mechanism is connected with the lifting mechanism, a lifting support arm capable of lifting the power battery is arranged at the front end of the lifting mechanism, and the lifting support arm of the lifting mechanism reciprocates between a first position and a second position through the lifting mechanism; the fire extinguishing liquid in the water tank is saturated salt water. Although the scheme can effectively extinguish fire when the battery is on fire, the device is used in a battery placing factory and cannot be effectively utilized on a new energy vehicle, meanwhile, the device is effective under the condition that the battery is on fire, and cannot be effectively utilized when the battery is on fire seriously, so that the emergence of the power battery emergency treatment equipment which can be applied to the new energy vehicle is urgent.
Disclosure of Invention
The invention aims to provide new energy vehicle power battery emergency treatment equipment which comprises a bottom plate, a first mounting bottom plate, a first dismounting power battery, a second mounting bottom plate, a second dismounting power battery, a squeezing plate, a cover plate and a battery mounting frame, wherein the battery mounting frame is fixed inside a new energy vehicle, two mounting grooves are arranged on the inner side of the battery mounting frame, the upper ends of the two mounting grooves are respectively and fixedly provided with the cover plate, the squeezing plate is arranged on the lower side of the cover plate, the first dismounting power battery and the second dismounting power battery are respectively embedded in the two mounting grooves on the battery mounting frame, the first dismounting power battery and the second dismounting power battery are both arranged on the lower side of the squeezing plate, the upper ends of the first dismounting power battery and the second dismounting power battery are tightly attached to the lower end of the squeezing plate, the lower end face of the first dismounting power battery is tightly attached to the upper end face of the first mounting bottom plate, the lower end face of the second detachable power battery is tightly attached to the upper end face of a second mounting bottom plate, the first mounting bottom plate and the second mounting bottom plate are embedded in the bottom plate, and the bottom plate is fixed to the bottom face of the new energy vehicle;
the first detachable power battery comprises an external insulation shell, a cooling control groove, heat-conducting and electric-conducting fins, a heat-conducting and electric-conducting shell, heat-conducting and electric-conducting fins, an outer-layer electric-conducting electrode plate and a power battery, wherein the power battery is fixed at the bottom of the inner side of the heat-conducting and electric-conducting shell, the cooling control groove is arranged at the upper part of the inner side of the heat-conducting and electric-conducting shell, the heat-conducting and electric-conducting fins are wrapped on the outer side of the power battery, the heat-conducting and electric-conducting fins are in close contact with the inner side wall of the heat-conducting and electric-conducting shell, saline water is filled between the outer side wall of the heat-conducting and electric-conducting shell and the inner side wall of the external insulation shell, a plurality of heat-conducting and electric-conducting fins, the outer side wall of the external insulation shell is provided with a T-shaped limiting fixture block;
the first detachable power battery and the second detachable power battery are connected with an internal circuit of the new energy vehicle in a parallel mode, and the first detachable power battery and the second detachable power battery are electrically connected with the battery mounting frame.
Further, the bottom plate includes first bottom plate mounting groove, spacing groove, separation groove, second bottom plate mounting groove and bottom plate body, the bottom plate body is flat rectangular plate-like, bottom plate body up end front side is equipped with first bottom plate mounting groove, bottom plate body up end rear side is equipped with second bottom plate mounting groove, first bottom plate mounting groove and second bottom plate mounting groove symmetric distribution, first bottom plate mounting groove and second bottom plate mounting groove all run through the terminal surface about the bottom plate body, all be equipped with the spacing groove on the inboard cell wall of first bottom plate mounting groove and second bottom plate mounting groove, evenly be equipped with a plurality of separation grooves under the bottom plate body on the terminal surface, it is a plurality of the separation groove is connected with a plurality of spacing groove through-going through respectively, the separation groove tank bottom all is the slope bottom surface to spacing groove one side slope.
Further, the first mounting base plate comprises a base plate cover plate, a limiting clamping block, a base plate shell, a thermal fusing lock head, a connecting rod, an extrusion spring and a baffle plate, the bottom plate shell is a hollow rectangular shell without a top and a bottom, the number of the limiting clamping blocks is four, the four limiting clamping blocks are respectively arranged on four side surfaces of the bottom plate shell, the limiting clamping block is in sliding fit with the bottom plate shell, the baffle is rectangular and annular, the baffle is fixed on the bottom surface of the inner side of the bottom plate shell, one end of the connecting rod is fixedly connected with the thermal fusing lock head, the other end of the connecting rod penetrates through the baffle plate and is fixedly connected with the limiting clamping block, the extrusion spring is sleeved on the connecting rod, one end of the extrusion spring is contacted with the limiting clamping block, the other end of the extrusion spring is contacted with the baffle plate, the bottom plate cover plate is fixed on the upper end surface of the bottom plate shell, the bottom plate shell is matched with the first bottom plate mounting groove, and the limiting clamping block is matched with the limiting groove.
Furthermore, the hot-melt lock head comprises two clamping bodies, a fusing ring and a lock head clamping groove, wherein the two clamping bodies are arranged, the two clamping bodies are closed to form a complete cylinder, the lock head clamping groove is formed in the center of the cylinder, the fusing ring is embedded in the inner side of the complete cylinder formed by the two clamping bodies, the lock head clamping groove is in interference fit with the connecting rod, the clamping bodies are formed by copper casting, and the fusing ring is made of lead-antimony alloy materials.
Further, the structure of the second mounting base plate is identical to that of the first mounting base plate.
Furthermore, the cooling control groove comprises a water tank, two sealing baffles, a control groove rotating shaft, two fixed pulleys, two connecting ropes, a hot melting rope, a contraction spring and a heat conducting rope, wherein the water tank is a rectangular hollow tank body without a top, the water tank is fixed on the upper end surface of the inner side of the heat conducting and electricity conducting shell, the two sealing baffles are rotationally fixed on the inner side of the heat conducting and electricity conducting shell through the control groove rotating shaft and just seal the bottom surface of the water tank, the two fixed pulleys are symmetrically rotationally fixed on the inner side wall of the heat conducting and electricity conducting shell, the two connecting ropes are respectively fixedly connected with one end of the two connecting ropes and the outer side wall of the two control groove rotating shaft, the other end of the connecting ropes bypasses the fixed pulleys and is fixedly connected with the contraction spring, the contraction spring is embedded on the inner side wall of the heat conducting and electricity conducting shell, and the bottom of the contraction spring is fixedly connected, the top of the contraction spring is fixedly connected with the connecting rope and the lower end of the hot melting rope respectively, the upper end of the hot melting rope is fixed on the side wall of the heat-conducting and electricity-conducting shell, the center of the hot melting rope is fixedly connected with one end of the heat-conducting rope, the other end of the heat-conducting rope is fixedly connected with the heat-conducting insulating fins, and the water tank is filled with liquid water.
Further, the second detachable power battery structure is identical to the first detachable power battery structure.
Furthermore, the extrusion plate comprises an extrusion plate body and an extrusion elastic sheet, the extrusion elastic sheet is fixed at the upper end of the extrusion plate body, the upper end of the extrusion elastic sheet is tightly attached to the lower end face of the cover plate, and the lower end face of the extrusion plate body is tightly attached to the top faces of the external insulation shells of the second detachable power battery structure and the first detachable power battery.
Further, battery installation frame is including installation frame body, first mounting groove, second mounting groove, electrode patch draw-in groove and T type draw-in groove, installation frame body is the cuboid, installation frame body up end one side is equipped with first mounting groove, installation frame body up end opposite side is equipped with the second mounting groove, first mounting groove is the same with second mounting groove inner structure completely, be equipped with electrode patch draw-in groove and T type draw-in groove on the second mounting groove inside wall, electrode patch draw-in groove and new energy vehicle internal circuit electric connection, and electrode patch draw-in groove and outer conductive electrode piece sliding fit, the spacing fixture block sliding fit of T type on T type draw-in groove and the external insulation casing lateral wall.
Further, the working steps of the new energy vehicle power battery emergency treatment equipment are as follows:
1) welding a battery installation frame in the new energy vehicle, and welding a bottom plate on a chassis of the new energy vehicle;
2) inserting a first detachable power battery into the battery installation rack from a first bottom plate installation groove on the lower side of the bottom plate, and enabling the T-shaped clamping groove to be matched with a T-shaped limiting clamping block on the outer side wall of the external insulating shell and the electrode patch clamping groove to be matched with the outer-layer conductive electrode plate completely;
3) installing a second detachable power battery in the battery installation vehicle frame according to the step 2);
4) the first installation bottom plate is clamped into the first bottom plate installation groove, the limiting fixture block is matched with the limiting groove completely, and the second installation bottom plate is clamped into the second bottom plate installation groove in the same way;
5) when any one of the first detachable power battery and the second detachable power battery fails, the failed battery generates high temperature, the temperature is transmitted to the heat-conducting rope through the heat-conducting insulating fins in the failed battery, and the temperature is transmitted to the hot-melting rope by the cooling control groove until the hot-melting rope is fused;
6) at the moment, the contraction spring contracts, the connection rope is pulled, the connection rope pulls the control groove rotating shaft to rotate, the sealing baffle is unfolded, water in the water tank flows into the heat and electricity conducting shell, and the power battery in the heat and electricity conducting shell is cooled;
7) when the temperature of the power battery in the fault battery continues to rise, the temperature is transmitted to the heat and electricity conducting fins through the heat and electricity conducting fins and is transmitted to the external insulating shell through the heat and electricity conducting fins, the external insulating shell transmits the temperature into the first mounting bottom plate, the temperature rises at the moment, the thermal fuse locking head in the first mounting bottom plate is heated, the fuse ring is further heated, and after the fuse ring is fused, the two clamping bodies are separated, and the locking groove of the locking head is separated from the connecting rod;
8) the limiting clamping block is bounced into the separation groove under the action of the extrusion spring, and the new energy vehicle is thrown out through the inclined bottom surface of the separation groove;
9) at the moment, the first mounting bottom plate and the bottom plate fall off, and the fault battery is pushed by the extrusion plate to pop out of the battery mounting rack and is separated from the bottom of the new energy vehicle;
10) and the new energy vehicle carries out emergency braking through the residual battery and then alarms to maintain the vehicle.
The invention has the beneficial effects that: the battery compartment of the invention is provided with two layers, and the inner layer is internally provided with a cooling control groove, when the battery has a fault, the temperature of the battery rises, the cooling control groove of the inner layer can utilize liquid water to cool the battery, so as to avoid the battery from further deterioration and burning, simultaneously, the liquid water and the heat conduction conductive shell transmit the electric energy of the battery into the external insulating shell, the brine in the external insulating shell discharges the electric energy in the battery, so as to avoid secondary injury of personnel, the inner layer is provided with the heat conduction fins, so as to lead out the heat generated when the battery normally works and avoid the battery from being damaged, when the battery has a fault and the temperature rises sharply, the heat conduction fins lead the temperature in the heat conduction conductive shell to the external insulating shell, the temperature is led into the first mounting bottom plate through the external insulating shell, and the first mounting bottom plate pops up through the fusing operation of the thermal fusing lock head, the emergency treatment method of the power battery is safe and effective, and under the condition that the battery is damaged, the emergency operation is carried out by adopting the battery, so that the safety performance is high.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of the general structure of an emergency treatment device for a power battery of a new energy vehicle;
FIG. 2 is a schematic structural diagram of a base plate of the emergency treatment equipment for the power battery of the new energy vehicle;
FIG. 3 is a schematic structural diagram of a first mounting base plate of the emergency treatment device for the power battery of the new energy vehicle;
FIG. 4 is a schematic structural diagram of a thermal-fusing lock head of the emergency treatment equipment for the power battery of the new energy vehicle;
FIG. 5 is a schematic structural diagram of a first disassembled power battery of the emergency treatment device for the power battery of the new energy vehicle;
FIG. 6 is a schematic structural diagram of a cooling control tank of the emergency treatment equipment for the power battery of the new energy vehicle;
FIG. 7 is a schematic structural diagram of a squeezing plate of the emergency treatment device for the power battery of the new energy vehicle;
FIG. 8 is a schematic structural diagram of a battery mounting rack of the emergency treatment equipment for the power battery of the new energy vehicle;
in the figure: 1 bottom plate, 2 first mounting bottom plate, 3 first dismounting power battery, 4 second mounting bottom plate, 5 second dismounting power battery, 6 extrusion plate, 7 cover plate, 8 battery mounting rack, 11 first bottom plate mounting groove, 12 spacing groove, 13 disengagement groove, 14 second bottom plate mounting groove, 15 bottom plate body, 21 bottom plate cover plate, 22 spacing fixture block, 23 bottom plate shell, 24 thermal fusing lock head, 25 connecting rod, 26 extrusion spring, 27 baffle, 241 clamp body, 242 fusing ring, 243 lock head clamping groove, 31 external insulation shell, 32 cooling control groove, 33 thermal conductive fin, 34 thermal conductive electric shell, 35 thermal conductive insulation fin, 36 external layer electric conductive electrode slice, 37 power battery, 321 water tank, 322 sealing baffle, 323 control groove rotating shaft, 324 fixed pulley, 325 connecting rope, 326 thermal fusing rope, 327 shrinking spring, 328 thermal conductive rope, 61 extrusion plate body, 62 extrusion elastic sheet, 81 mounting rack body, 81 extrusion elastic sheet, etc, 82 a first mounting groove, 83 a second mounting groove, 84 an electrode patch card slot and 85T-shaped card slot.
Detailed Description
Referring to fig. 1-8, an emergency treatment device for a power battery of a new energy vehicle comprises a base plate 1, a first mounting base plate 2, a first detachable power battery 3, a second mounting base plate 4, a second detachable power battery 5, a squeezing plate 6, a cover plate 7 and a battery mounting rack 8, wherein the battery mounting rack 8 is fixed inside the new energy vehicle, two mounting grooves are formed in the inner side of the battery mounting rack 8, the cover plate 7 is fixedly mounted at the upper ends of the two mounting grooves respectively, the squeezing plate 6 is arranged on the lower side of the cover plate 7, the first detachable power battery 3 and the second detachable power battery 5 are embedded in the two mounting grooves of the battery mounting rack 8 respectively, the first detachable power battery 3 and the second detachable power battery 5 are arranged on the lower side of the squeezing plate 6, the upper ends of the first detachable power battery 3 and the second detachable power battery 5 are tightly attached to the lower end of the squeezing plate 6, the terminal surface closely laminates with first mounting plate 2 up end under the first power battery 3 of dismantling, and the terminal surface closely laminates with second mounting plate 4 up end under the second power battery 5 of dismantling, and first mounting plate 2 and second mounting plate 4 all embed on bottom plate 1, and bottom plate 1 is fixed in new forms of energy vehicle bottom surface.
As shown in fig. 5, the first detachable power battery 3 includes an external insulation casing 31, a cooling control slot 32, heat-conducting fins 33, a heat-conducting casing 34, heat-conducting insulating fins 35, an outer-layer conductive electrode plate 36 and a power battery 37, wherein the power battery 37 is fixed at the bottom of the inner side of the heat-conducting casing 34, the cooling control slot 32 is arranged at the upper portion of the inner side of the heat-conducting casing 34, the heat-conducting insulating fins 35 are wrapped at the outer side of the power battery 37, the heat-conducting insulating fins 35 are in close contact with the inner side wall of the heat-conducting casing 34, the heat-conducting casing 34 is fixed inside the external insulation casing 31, saline is filled between the outer side wall of the heat-conducting casing 34 and the inner side wall of the external insulation casing 31, a plurality of heat-conducting fins 33 are uniformly arranged on the outer side wall of the heat-conducting casing 34, the outer-layer conductive electrode plate, be equipped with the spacing fixture block of T type on the external insulation casing 31 lateral wall, the battery compartment is equipped with two layers, and be equipped with the cooling control groove in the inlayer inside, when the battery breaks down, the battery temperature risees, the cooling control groove 32 of inlayer can utilize liquid water to cool down the battery, avoid the battery to further worsen and lead to the burning, simultaneously through liquid water and lead in the electric energy transmission of conductive shell 34 with the battery to external insulation casing 31, through the salt water in the external insulation casing 31, emit the inside electric energy of battery, avoid personnel's secondary injury, the inlayer is equipped with heat conduction insulating fin 35, can derive the heat that the battery normally worked the production, avoid the battery to damage.
First dismantlement power battery 3 and second dismantlement power battery 5 are connected with new forms of energy vehicle internal circuit through parallel connection, and first dismantlement power battery 3 and second are dismantled power battery 5 and all are installed 8 electric connection with the battery, and when a battery damage and break away from the circuit, can not influence the power supply of another battery to the circuit.
As shown in fig. 2, the bottom plate 1 includes a first bottom plate mounting groove 11, a limiting groove 12, a separation groove 13, a second bottom plate mounting groove 14 and a bottom plate body 15, the bottom plate body 15 is in a flat rectangular plate shape, the front side of the upper end surface of the bottom plate body 15 is provided with the first bottom plate mounting groove 11, the rear side of the upper end surface of the bottom plate body 15 is provided with the second bottom plate mounting groove 14, the first bottom plate mounting groove 11 and the second bottom plate mounting groove 14 are symmetrically distributed, the first bottom plate mounting groove 11 and the second bottom plate mounting groove 14 all penetrate through the upper end surface and the lower end surface of the bottom plate body 15, the inner side groove walls of the first bottom plate mounting groove 11 and the second bottom plate mounting groove 14 are all provided with the limiting groove 12, the lower end surface of the bottom plate body 15 is evenly provided with a plurality of separation grooves 13, the plurality of separation grooves 13 are respectively.
As shown in fig. 3, the first mounting base plate 2 includes a base plate cover plate 21, a limiting fixture block 22, a base plate housing 23, four thermally-broken locking heads 24, a connecting rod 25, an extruding spring 26 and a baffle plate 27, the base plate housing 23 is a hollow rectangular housing with no top and bottom, the limiting fixture block 22 is provided with four limiting fixture blocks 22, the four limiting fixture blocks 22 are respectively arranged on four sides of the base plate housing 23, the limiting fixture block 22 is in sliding fit with the base plate housing 23, the baffle plate 27 is in a rectangular ring shape, the baffle plate 27 is fixed on the bottom surface of the inner side of the base plate housing 23, one end of the connecting rod 25 is fixedly connected with the thermally-broken locking head 24, the other end penetrates through the baffle plate 27 and is fixedly connected with the limiting fixture block 22, the extruding spring 26 is sleeved on the connecting rod 25, one end of the extruding spring 26 is in contact with the limiting, and the limiting fixture block 22 is matched with the limiting groove 12.
As shown in fig. 4, the thermal fusing locking head 24 includes two locking bodies 241, a fusing ring 242 and a locking head slot 243, the two locking bodies 241 are closed to form a complete cylinder, the locking head slot 243 is disposed at the center of the cylinder, the fusing ring 242 is embedded inside the complete cylinder formed by the two locking bodies 241, the locking head slot 243 is in interference fit with the connecting rod 25, the locking bodies 241 are cast from copper, the fusing ring 242 is made of lead-antimony alloy material, when the temperature rises, the thermal fusing locking head 24 in the first installation base plate 2 is heated, and the fusing ring 242 is further heated, when the fusing ring 242 is fused, the two locking bodies 241 are separated, the locking head slot 243 is separated from the connecting rod 25, the limiting fixture block 22 is ejected into the separation slot 13 under the action of the extrusion spring 26, and a new energy vehicle is ejected through the inclined bottom surface of the separation slot 13, and at this time, the first installation base plate 2 and the base plate 1 fall off.
The structure of the second installation bottom plate 4 is identical to that of the first installation bottom plate 2.
As shown in fig. 6, the temperature-reducing control tank 32 includes a water tank 321, a sealing baffle plate 322, a control tank rotating shaft 323, two fixed pulleys 324, two connecting ropes 325, a hot-melting rope 326, a shrinking spring 327 and a heat-conducting rope 328, the water tank 321 is a rectangular bottomless hollow tank body, the water tank 321 is fixed on the upper end surface of the inner side of the heat-conducting conductive shell 34, the two sealing baffle plates 322 are rotatably fixed on the inner side of the heat-conducting shell 34 through the control tank rotating shaft 323, the sealing baffle plates 322 just seal the bottom surface of the water tank 321, the two fixed pulleys 324 are symmetrically and rotatably fixed on the inner side wall of the heat-conducting shell 34, the two connecting ropes 325 are provided, one end of each connecting rope 325 is fixedly connected with the outer side wall of the two control tank rotating shafts 323, the other end of each connecting rope bypasses the fixed pulley 324 to be fixedly connected with the shrinking spring 327, the shrinking spring 327 is embedded on the inner side wall of the heat-, the top of the contraction spring 327 is respectively fixedly connected with the lower ends of the connection rope 325 and the hot melt rope 326, the upper end of the hot melt rope 326 is fixed on the side wall of the heat conduction conductive shell 34, the center of the hot melt rope 326 is fixedly connected with one end of the heat conduction rope 328, the other end of the heat conduction rope 328 is fixedly connected with the heat conduction insulation fins 35, and the water tank 321 is filled with liquid water.
The structure of the second detachable power battery 5 is identical to that of the first detachable power battery 3.
As shown in fig. 7, the squeeze plate 6 includes a squeeze plate body 61 and a squeeze spring 62, the squeeze spring 62 is fixed on the upper end of the squeeze plate body 61, and the upper end of the squeeze spring 62 is tightly attached to the lower end surface of the cover plate 7, the lower end surface of the squeeze plate body 61 is tightly attached to the top surface of the external insulation shell 31 of the second detachable power battery 5 and the first detachable power battery 3, the squeeze plate 6 can be pushed by the squeeze spring 62 to pop up the faulty battery to the battery mounting rack 8 after the first mounting base plate 2 and the bottom plate 1 fall off, and the faulty battery is separated from the bottom of the new energy vehicle.
As shown in fig. 8, the battery installation frame 8 includes an installation frame body 81, a first installation groove 82, a second installation groove 83, an electrode patch clamping groove 84 and a T-shaped clamping groove 85, the installation frame body 81 is a rectangular body, the first installation groove 82 is arranged on one side of the upper end face of the installation frame body 81, the second installation groove 83 is arranged on the other side of the upper end face of the installation frame body 81, the internal structure of the first installation groove 82 is completely the same as that of the second installation groove 83, the electrode patch clamping groove 84 and the T-shaped clamping groove 85 are arranged on the inner side wall of the second installation groove 83, the electrode patch clamping groove 84 is electrically connected with an internal circuit of a new energy vehicle, the electrode patch clamping groove 84 is in sliding fit with the outer conductive electrode plate 36, the T-shaped clamping groove 85 is in sliding fit with a T-shaped limiting clamping block.
The working steps of the new energy vehicle power battery emergency treatment equipment are as follows:
1) welding the battery installation frame 8 in the new energy vehicle, and welding the bottom plate 1 on a chassis of the new energy vehicle;
2) inserting the first detachable power battery 3 into the battery installation rack 8 from the first bottom plate installation groove 11 on the lower side of the bottom plate 1, and finishing the matching of the T-shaped clamping groove 85 and the T-shaped limiting clamping block on the outer side wall of the external insulating shell 31 and the electrode patch clamping groove 84 with the outer layer conductive electrode plate 36;
3) installing the second disassembled power battery 5 in the battery installation vehicle frame 8 according to the step 2);
4) the first installation bottom plate 2 is clamped into the first bottom plate installation groove 11, the limiting fixture block 22 is completely matched with the limiting groove 12, and the second installation bottom plate 4 is clamped into the second bottom plate installation groove 14 in the same way;
5) when any one of the first detachable power battery 3 and the second detachable power battery 5 fails, the failed battery generates high temperature, the temperature is transmitted to the heat-conducting rope 328 through the heat-conducting insulating fins 35 in the failed battery, and the temperature-reducing control groove 32 transmits the temperature to the hot-melting rope 326 until the hot-melting rope 326 is fused;
6) at this time, the contracting spring 327 contracts to pull the connecting rope 325, the connecting rope 325 pulls the control groove rotating shaft 323 to rotate, so that the sealing baffle 322 is unfolded, water in the water tank 321 flows into the heat and electricity conducting shell 34, and the power battery 37 in the heat and electricity conducting shell 34 is cooled;
7) when the temperature of the power battery 37 in the faulty battery continues to rise, the temperature is transmitted to the heat and electricity conducting fins 33 through the heat and electricity conducting fins 35 and is transmitted to the external insulating shell 31 through the heat and electricity conducting fins 33, the external insulating shell 31 transmits the temperature into the first mounting base plate 2, the temperature rises at the moment, so that the thermal fusing lock 24 in the first mounting base plate 2 is heated, the fusing ring 242 is further heated, after the fusing ring 242 is fused, the two clamping bodies 241 are separated, and the lock clamping groove 243 is separated from the connecting rod 25;
8) the limiting clamping block 22 is bounced into the separation groove 13 under the action of the extrusion spring 26 and is thrown out of the new energy vehicle through the inclined bottom surface of the separation groove 13;
9) at the moment, the first mounting bottom plate 2 and the bottom plate 1 fall off, and the fault battery is pushed by the extrusion plate 6 to pop up the battery mounting rack 8 and is separated from the bottom of the new energy vehicle;
10) and the new energy vehicle carries out emergency braking through the residual battery and then alarms to maintain the vehicle.
The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.

Claims (9)

1. The utility model provides a new forms of energy vehicle power battery emergency treatment equipment, includes that bottom plate (1), first mounting plate (2), first dismantlement power battery (3), second mounting plate (4), second dismantlement power battery (5), stripper plate (6), apron (7) and battery installation truck frame (8), its characterized in that, inside battery installation truck frame (8) were fixed in the new forms of energy vehicle, battery installation truck frame (8) inboard is equipped with two mounting grooves, two the mounting groove upper end all is fixed mounting respectively has apron (7), apron (7) downside is equipped with stripper plate (6), first dismantlement power battery (3) and second dismantlement power battery (5) are embedded respectively in two mounting grooves on battery installation truck frame (8), first dismantlement power battery (3) and second dismantlement power battery (5) all locate stripper plate (6) downside and first dismantlement power battery (3) and second dismantlement power battery (5) and second dismantle The upper end of a power unloading battery (5) is tightly attached to the lower end of an extrusion plate (6), the lower end face of a first disassembling power battery (3) is tightly attached to the upper end face of a first mounting bottom plate (2), the lower end face of a second disassembling power battery (5) is tightly attached to the upper end face of a second mounting bottom plate (4), the first mounting bottom plate (2) and the second mounting bottom plate (4) are embedded in a bottom plate (1), and the bottom plate (1) is fixed to the bottom face of a new energy vehicle;
the first detachable power battery (3) comprises an external insulation shell (31), a cooling control groove (32), heat-conducting and electricity-conducting fins (33), a heat-conducting and electricity-conducting shell (34), heat-conducting and electricity-conducting fins (35), an outer-layer electricity-conducting electrode plate (36) and a power battery (37), wherein the power battery (37) is fixed at the bottom of the inner side of the heat-conducting and electricity-conducting shell (34), the cooling control groove (32) is arranged at the upper part of the inner side of the heat-conducting and electricity-conducting shell (34), the heat-conducting and electricity-conducting fins (35) are wrapped at the outer side of the power battery (37), the heat-conducting and electricity-conducting fins (35) are in close contact with the inner side wall of the heat-conducting and electricity-conducting shell (34), the heat-conducting and electricity-conducting shell (34) is fixed inside the external insulation shell (31), saline is filled between the outer side wall of the heat-conducting and electricity, the outer-layer conductive electrode plate (36) is embedded in the outer side wall of the outer insulating shell (31), the outer-layer conductive electrode plate (36) is electrically connected with the power battery (37) through a wire, and a T-shaped limiting clamping block is arranged on the outer side wall of the outer insulating shell (31);
the first detachable power battery (3) and the second detachable power battery (5) are connected with an internal circuit of the new energy vehicle in a parallel mode, and the first detachable power battery (3) and the second detachable power battery (5) are electrically connected with the battery mounting rack (8).
2. The new energy vehicle power battery emergency treatment equipment according to claim 1, wherein the base plate (1) comprises a first base plate installation groove (11), a limiting groove (12), a release groove (13), a second base plate installation groove (14) and a base plate body (15), the base plate body (15) is in a flat rectangular plate shape, the front side of the upper end surface of the base plate body (15) is provided with the first base plate installation groove (11), the rear side of the upper end surface of the base plate body (15) is provided with the second base plate installation groove (14), the first base plate installation groove (11) and the second base plate installation groove (14) are symmetrically distributed, the first base plate installation groove (11) and the second base plate installation groove (14) both penetrate through the upper end surface and the lower end surface of the base plate body (15), and the inner side groove walls of the first base plate installation groove (11) and the second base plate installation groove (14) are both provided with the limiting groove (, evenly be equipped with a plurality of grooves (13) that break away from on the terminal surface under bottom plate body (15), it is a plurality of break away from groove (13) respectively with a plurality of spacing groove (12) through connection, break away from the slope bottom surface that groove (13) tank bottom all is to spacing groove (12) one side slope.
3. The new energy vehicle power battery emergency treatment equipment according to claim 1, wherein the first mounting base plate (2) comprises a base plate cover plate (21), four limiting clamping blocks (22), a base plate shell (23), a thermal fusing lock head (24), a connecting rod (25), an extrusion spring (26) and a baffle plate (27), the base plate shell (23) is a hollow rectangular shell without a top and a bottom, the number of the limiting clamping blocks (22) is four, the four limiting clamping blocks (22) are respectively arranged on four side surfaces of the base plate shell (23), the limiting clamping blocks (22) are in sliding fit with the base plate shell (23), the baffle plate (27) is in a rectangular ring shape, the baffle plate (27) is fixed on the bottom surface of the inner side of the base plate shell (23), one end of the connecting rod (25) is fixedly connected with the thermal fusing lock head (24), and the other end penetrates through the baffle plate (27) and is fixedly connected with the limiting clamping blocks (22, extrusion spring (26) cover is on connecting rod (25), and extrusion spring (26) one end and spacing fixture block (22) contact, the other end and baffle (27) contact, bottom plate apron (21) are fixed in on bottom plate casing (23) up end, bottom plate casing (23) cooperate with first bottom plate mounting groove (11), and spacing fixture block (22) cooperate with spacing groove (12).
4. The new energy vehicle power battery emergency treatment equipment according to claim 3, wherein the thermal fusing lock head (24) comprises two card bodies (241), two fusing rings (242) and two lock head clamping grooves (243), the two card bodies (241) are closed to form a complete cylinder, the lock head clamping groove (243) is formed in the center of the cylinder, the fusing rings (242) are embedded in the inner side of the complete cylinder formed by the two card bodies (241), the lock head clamping grooves (243) are in interference fit with the connecting rod (25), the card bodies (241) are formed by copper casting, and the fusing rings (242) are made of lead-antimony alloy materials.
5. The new energy vehicle power battery emergency treatment equipment according to claim 1, characterized in that the structure of the second mounting base plate (4) is identical to the structure of the first mounting base plate (2).
6. The new energy vehicle power battery emergency treatment equipment according to claim 1, wherein the cooling control groove (32) comprises a water tank (321), sealing baffles (322), a control groove rotating shaft (323), fixed pulleys (324), a connecting rope (325), a hot melting rope (326), a contraction spring (327) and a heat conducting rope (328), the water tank (321) is a rectangular bottomless hollow groove body with a top, the water tank (321) is fixed on the upper end surface of the inner side of the heat conducting shell (34), the number of the sealing baffles (322) is two, the two sealing baffles (322) are rotationally fixed on the inner side of the heat conducting shell (34) through the control groove rotating shaft (323), the sealing baffles (322) just seal the bottom surface of the water tank (321), the number of the fixed pulleys (324) is two, and the two fixed pulleys (324) are symmetrically rotationally fixed on the inner side wall of the heat conducting shell (34), the connecting rope (325) is provided with two, the connecting rope (325) is respectively fixedly connected with one end and the outer side walls of the two control groove rotating shafts (323), the other end of the connecting rope is fixedly connected with a contraction spring (327) by bypassing a fixed pulley (324), the contraction spring (327) is embedded in the inner side wall of the heat conduction conductive shell (34), the bottom of the contraction spring is fixedly connected with the heat conduction conductive shell (34), the top of the contraction spring (327) is respectively fixedly connected with the connecting rope (325) and the lower end of the hot melting rope (326), the upper end of the hot melting rope (326) is fixed on the side wall of the heat conduction conductive shell (34), the center of the hot melting rope (326) is fixedly connected with one end of the heat conduction rope (328), the other end of the heat conduction rope (328) is fixedly connected with the heat conduction insulating fins (35), and the water tank (321).
7. The new energy vehicle power battery emergency treatment device according to claim 1, characterized in that the second disassembled power battery (5) is identical in structure to the first disassembled power battery (3).
8. The new energy vehicle power battery emergency treatment equipment according to claim 7, wherein the extrusion plate (6) comprises an extrusion plate body (61) and an extrusion elastic sheet (62), the extrusion elastic sheet (62) is fixed at the upper end of the extrusion plate body (61), the upper end of the extrusion elastic sheet (62) is tightly attached to the lower end face of the cover plate (7), and the lower end face of the extrusion plate body (61) is tightly attached to the top faces of the second detachable power battery (5) structure and the external insulation shell (31) of the first detachable power battery (3).
9. The new energy vehicle power battery emergency treatment equipment according to claim 1, wherein the battery installation frame (8) comprises an installation frame body (81), a first installation groove (82), a second installation groove (83), an electrode patch clamping groove (84) and a T-shaped clamping groove (85), the installation frame body (81) is a rectangular body, the first installation groove (82) is formed in one side of the upper end face of the installation frame body (81), the second installation groove (83) is formed in the other side of the upper end face of the installation frame body (81), the first installation groove (82) and the second installation groove (83) are identical in internal structure, the electrode patch clamping groove (84) and the T-shaped clamping groove (85) are formed in the inner side wall of the second installation groove (83), the electrode patch clamping groove (84) is electrically connected with an internal circuit of the new energy vehicle, and the electrode patch clamping groove (84) is in sliding fit with the outer conductive electrode plate (36), the T-shaped clamping groove (85) is in sliding fit with a T-shaped limiting clamping block on the outer side wall of the external insulating shell (31).
CN202010302905.XA 2020-04-17 2020-04-17 New energy vehicle power battery emergency treatment equipment Withdrawn CN111490202A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010302905.XA CN111490202A (en) 2020-04-17 2020-04-17 New energy vehicle power battery emergency treatment equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010302905.XA CN111490202A (en) 2020-04-17 2020-04-17 New energy vehicle power battery emergency treatment equipment

Publications (1)

Publication Number Publication Date
CN111490202A true CN111490202A (en) 2020-08-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010302905.XA Withdrawn CN111490202A (en) 2020-04-17 2020-04-17 New energy vehicle power battery emergency treatment equipment

Country Status (1)

Country Link
CN (1) CN111490202A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113488736A (en) * 2021-06-28 2021-10-08 上海翊族商务咨询有限公司 Vehicle battery pack system with increased pure electric endurance mileage

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113488736A (en) * 2021-06-28 2021-10-08 上海翊族商务咨询有限公司 Vehicle battery pack system with increased pure electric endurance mileage
CN113488736B (en) * 2021-06-28 2023-11-10 南通康北新材料有限公司 Vehicle battery pack system with increased pure electric endurance mileage

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Application publication date: 20200804