CN113471588A - Upper box assembly, battery assembly and electric vehicle - Google Patents
Upper box assembly, battery assembly and electric vehicle Download PDFInfo
- Publication number
- CN113471588A CN113471588A CN202110738470.8A CN202110738470A CN113471588A CN 113471588 A CN113471588 A CN 113471588A CN 202110738470 A CN202110738470 A CN 202110738470A CN 113471588 A CN113471588 A CN 113471588A
- Authority
- CN
- China
- Prior art keywords
- box body
- upper box
- upper tank
- assembly
- battery
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
-
- 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
- A62C3/07—Fire prevention, containment or extinguishing specially adapted for particular objects or places in vehicles, e.g. in road vehicles
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C35/00—Permanently-installed equipment
- A62C35/02—Permanently-installed equipment with containers for delivering the extinguishing substance
- A62C35/10—Containers destroyed or opened by flames or heat
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C99/00—Subject matter not provided for in other groups of this subclass
- A62C99/0009—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames
- A62C99/0045—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames using solid substances, e.g. sand, ashes; using substances forming a crust
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
-
- 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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
- H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
- H01M50/231—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks having a layered structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/242—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses an upper box assembly, a battery assembly and an electric vehicle, and belongs to the technical field of vehicles. The upper box body assembly comprises an upper box body, a metal coating, a fire extinguishing material and an air pressure detection piece, wherein the upper box body is provided with a fixing flange, a plurality of reinforcing convex ribs and a plurality of part mounting surfaces, and the fixing flange is used for being connected with the lower box body so as to form a sealed mounting space between the upper box body and the lower box body; the metal coating is pasted on the inner surface of the upper box body; the fire extinguishing material is filled in the reinforced convex ribs; the air pressure detection piece is used for detecting air pressure in the installation space. The structural strength of the upper box body is improved, small-sized flame can be extinguished, and the alarm function can be achieved when fire, explosion and other conditions happen. The battery assembly can extinguish flame, buffer impact generated by thermal runaway explosion of the battery, and prompt a driver or passengers of potential safety hazards in time. The electric vehicle can reserve the escape time for passengers and can also give an alarm to a driver or the passengers.
Description
Technical Field
The invention relates to the technical field of vehicles, in particular to an upper box assembly, a battery assembly and an electric vehicle.
Background
With the increase of the holding capacity of electric vehicles, the burning accidents caused by insulation reduction and short circuit due to sealing water leakage of a battery pack are increasingly frequent, the thermal runaway problem caused by the rapid development of the battery towards the trend of high energy density and high power performance is more and more, and the safety problem of the electric vehicles becomes a hotspot of social attention. The battery package is inside to contain electronic components such as battery module, high-voltage electricity connection row, low-voltage electric wire harness, in case take place the battery package and intake, light then the battery package can't work, heavy then takes place the burning accident. After the thermal runaway of the battery, violent reaction can be generated, the process is uncontrollable, and passengers have to be left with enough escape time to avoid casualties.
The existing battery upper box body assembly is mostly of a large-surface integrated arrangement structure, the height difference between a fixed surface and the highest surface of the fixed surface is small, so that a plurality of reinforcing rib structures cannot be guaranteed, the structural strength is weak, the existing product cannot delay the severe condition when the battery is out of control due to thermal runaway, once the battery is out of control due to thermal runaway, no protection delay measure exists at all, the battery upper box body assembly is possibly damaged by explosion impact of a battery monomer, and great potential safety hazards exist.
Disclosure of Invention
The first purpose of the invention is to provide an upper box body assembly, which improves the structural strength of the upper box body, can buffer the impact generated by the explosion of products in the upper box body, and also has the functions of fire extinguishing and abnormal air pressure alarm.
The second purpose of the invention is to provide a battery assembly, which can buffer the impact generated by thermal runaway explosion of the battery by applying the upper box assembly and has the functions of fire extinguishing and abnormal air pressure alarm.
The third objective of the present invention is to provide an electric vehicle, wherein the safety performance of the electric vehicle is improved by applying the above battery assembly.
In order to realize the purpose, the following technical scheme is provided:
in a first aspect, an upper case assembly is provided, comprising:
the upper box body is provided with a fixed flange, a plurality of reinforcing convex ribs and a plurality of part mounting surfaces, and the fixed flange is connected with the lower box body so as to form a sealed mounting space between the upper box body and the lower box body;
the metal coating is attached to the inner surface of the upper box body;
the fire extinguishing material is filled in the reinforcing convex ribs;
and the air pressure detection piece is used for detecting the air pressure in the installation space.
As an alternative to the upper tank assembly, the top surface of the upper tank is upwardly convex to form a gas passage inside the upper tank, the gas passage being located at a middle portion of the top surface of the upper tank and extending to an edge of one side of the upper tank.
As an alternative to the upper tank assembly, the plurality of component mounting surfaces includes a first component mounting surface that is provided on a top surface of the upper tank and above the gas passage.
As an alternative to the upper tank assembly, the top surface of the upper tank is upwardly convex to form a plurality of bosses.
As an alternative of the upper box assembly, the plurality of bosses include a first boss located at one end of the upper box, the first boss protrudes upwards to form a flow converging groove in the upper box, a splayed flow guide structure is arranged between the flow converging groove and the gas channel, a large-diameter end of the flow guide structure is communicated with the flow converging groove, and a small-diameter end of the flow guide structure is communicated with the gas channel.
As an alternative of the upper tank assembly, the upper tank assembly further includes a plurality of vent valves for communicating the installation space with the external atmosphere, and the vent valves are disposed at the diversion structure.
As an alternative to the upper box assembly, the upper box assembly further includes a plurality of shock absorbing members disposed between the upper box and the vehicle body.
As an alternative of the upper tank assembly, a plurality of reinforcing structures are arranged on the fixing flange at intervals, and the reinforcing structures are connected between the fixing flange and the upper tank.
In a second aspect, a battery assembly is provided, which includes a battery module assembly, a lower case, and the upper case assembly as described above, the upper case is connected to the lower case to form a sealed installation space between the upper case and the lower case, and the battery module assembly is disposed in the installation space.
In a third aspect, an electric vehicle is provided, which comprises the battery assembly as described above.
Compared with the prior art, the invention has the beneficial effects that:
the upper box body assembly comprises an upper box body, a metal coating, a fire extinguishing material and an air pressure detection piece, wherein the upper box body is provided with a fixing flange, a plurality of reinforcing convex ribs and a plurality of part mounting surfaces, and the fixing flange is used for being connected with the lower box body so as to form a sealed mounting space between the upper box body and the lower box body; the metal coating is pasted on the inner surface of the upper box body; the fire extinguishing material is filled in the reinforced convex ribs; the air pressure detection piece is used for detecting air pressure in the installation space. The structural strength of the upper box body is improved by arranging more reinforcing convex ribs, and the impact generated by product explosion in the upper box body can be buffered. The metal coating can fall off from the inner surface of the upper box body after being heated, and then the small-sized flame can be extinguished. The fire extinguishing material filled in the reinforced convex ribs can be contacted with flame after the metal coating is burnt out, and the effect of further extinguishing fire is achieved. Meanwhile, the air pressure detection piece can monitor the air pressure change in the installation space, and plays a role in alarming when fire, explosion and the like happen.
According to the battery assembly, by applying the upper box body assembly, the metal coating and the fire extinguishing material can extinguish flame at the initial stage of thermal runaway of the battery, and the upper box body can buffer impact generated by thermal runaway explosion of the battery when the battery is subjected to thermal runaway explosion. Meanwhile, the air pressure detection piece can monitor the air pressure change in the installation space, and plays a role in alarming when fire, explosion and the like happen.
According to the electric vehicle, by applying the battery assembly, flame can be extinguished at the initial stage of thermal runaway of the battery, an alarm can be given to a driver or passengers, personal injury is avoided, escape time can be reserved for the passengers when the battery thermally runaway explodes, and the safety performance of the electric vehicle is improved.
Drawings
FIG. 1 is a schematic structural diagram of an upper case at one viewing angle according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an upper box body from another perspective in the embodiment of the present invention.
Reference numerals:
1. an upper box body; 11. a fixed flange; 111. a reinforcing structure; 112. bolt holes; 12. reinforcing the convex ribs; 13. a gas channel; 14. a first component mounting surface; 15. a boss; 151. a first boss; 16. a confluence groove; 17. a flow guide structure; 18. a ventilation valve fixing surface; 181. the ventilation valve is provided with a through hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally placed when the products of the present invention are used, and are used only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements to be referred to must have specific orientations, be constructed in specific orientations, and operate, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; either mechanically or electrically. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
As shown in fig. 1-2, the present embodiment is directed to providing an upper case assembly including an upper case 1, a metal coating film, a fire extinguishing material, and a pressure detecting member.
The upper box body 1 is provided with a fixing flange 11, and the fixing flange 11 is used for being connected with the lower box body so as to form a sealed installation space between the upper box body 1 and the lower box body. In the present embodiment, a sealed installation space is formed between the upper case 1 and the lower case for installing the battery module, which will be described in detail below by taking the battery module as an example. In other embodiments, other products can be placed in the installation space, and the purposes of fire extinguishing, explosion prevention and the like are achieved through the upper box body assembly.
Optionally, a plurality of reinforcing structures 111 are arranged on the fixing flange 11 at intervals, and the reinforcing structures 111 are connected between the fixing flange 11 and the upper box 1 to increase the connection strength between the fixing flange 11 and the upper box 1. Optionally, the mounting flange 11 is provided with a plurality of bolt holes 112, the bolt holes 112 being spaced apart by a distance in the range of 60-80 mm.
Further, the upper case 1 is provided with a plurality of reinforcing ribs 12 and a plurality of component mounting surfaces. The structural strength of the upper box body 1 is improved by arranging more reinforcing convex ribs 12, and the impact generated by the explosion of the product in the upper box body 1 can be buffered; a plurality of spare part installation faces can be used to install other spare parts, can integrate part spare part on the lower box in last box 1, saves the arrangement space, realizes that the lower box is lightweight (the lower box adopts metal material to make, and density is big, and weight is big), is convenient for install the lower box. Optionally, the minimum distance between the inner surface of the upper box body 1 and a product arranged in the installation space is not less than 3mm, the interference with the product cannot be generated, the assembly is easy, the distance between the inner wall of the upper box body 1 and the battery module in the prior art is too small, the interference is easy to generate during the assembly, and the assembly is difficult. Further, in order to avoid interference with the whole vehicle, the minimum distance between the upper box body 1 and other structures of the whole vehicle is not less than 10 mm.
Alternatively, the top surface of the upper chamber 1 is upwardly protruded to form the gas passage 13 inside the upper chamber 1, and the gas passage 13 is located at the middle of the top surface of the upper chamber 1 and extends to the edge of one side of the upper chamber 1. The structural arrangement of the gas channel 13 is according to CFD (Computational Fluid Dynamics, namely Computational Fluid Dynamics) simulation analysis, arrange in the middle part of the upper box 1, communicate with the upper space of all battery modules, can be after the module in the battery package takes place thermal runaway, pass through gas channel 13 equipartition with the harmful high temperature high-pressure gas of module in the battery package, avoid because gas gathering pressure is too big, cause the instant fracture of upper box 1, effectively delay the thermal diffusion of battery package assembly.
Alternatively, the thickness of the upper case 1 is designed according to the result of CAE (Computer Aided Engineering) with an experience range of 3-5 mm.
Alternatively, the plurality of component mounting surfaces includes a first component mounting surface 14, and the first component mounting surface 14 is provided on the top surface of the upper case 1 and above the gas duct 13. Exemplarily, the first component mounting surface 14 is used for mounting a fuse, and the upper box 1 can be fixedly connected to the vehicle body by the first component mounting surface 14 through a fastener, so that the fixing point of the upper box 1 is increased, the upper box 1 can be fixed more firmly, and the stability of a product placed in the mounting space can be protected.
Optionally, all corners of the upper box body 1 adopt fillet structures, so that the structural strength of the upper box body 1 is higher compared with a right-angle structure, the problem of corner damage is not easily caused, a safety protection effect can be achieved, and assembly workers are not easily injured; in addition, fillet structure water conservancy diversion effect is better, when the battery package thermal runaway, can also play the water conservancy diversion effect to gas.
Optionally, the top surface of the upper box 1 protrudes upward to form a plurality of bosses 15, so that the upper box 1 has a larger height difference, and a plurality of reinforcing ribs 12, round corners and other structures can be arranged to increase the overall strength and rigidity.
Optionally, the plurality of bosses 15 include a first boss 151 located at one end of the upper case 1, the first boss 151 protrudes upward to form a flow converging groove 16 inside the upper case 1, a splayed flow guiding structure 17 is disposed between the flow converging groove 16 and the gas passage 13, a large-diameter end of the flow guiding structure 17 is communicated with the flow converging groove 16, and a small-diameter end is communicated with the gas passage 13. Optionally, the splayed flow guide structure 17 is obtained through multiple CFD simulations and calculation adjustment according to the area ratio of the inlet and the outlet of the gas channel 13. It can be understood that the flow guiding structure 17 is substantially two splayed surfaces, and the two surfaces are curved surfaces with S-shaped trend, which can guide the gas.
Optionally, the upper box assembly further comprises a plurality of shock absorbing members, and the shock absorbing members are arranged between the upper box 1 and the vehicle body. Go up box 1 and be located the upper portion of battery assembly, whole battery assembly installs in electric vehicle underbody below, and the shock attenuation fixed block then can install on the battery between box 1 and the whole vehicle underbody. The shock attenuation fixed block has certain elasticity, can absorb the energy of vibrations, reduces the vibration range of battery assembly. The shock absorbing member is made of an elastic material with good nonmetal insulation, and comprises but is not limited to EPP foam, aerogel, polyurethane and other materials.
Optionally, a metal coating is applied to the inner surface of the upper case 1. When a fire just begins to happen inside the battery pack, flame is small, the metal coating cannot be burnt through, the metal coating is adhered to the inside of the upper box body 1 through structural adhesive, and can fall off from the inner surface of the upper box body 1 after being heated, so that small flame can be extinguished. The metal coating can promote the high temperature resistance of the upper box body 1, and the fire extinguishing function of the upper box body assembly to the battery pack can be effectively realized. Illustratively, the metal coating is made of, but not limited to, metals with high temperature resistance and high ductility, such as aluminum, tin, and copper.
Optionally, a fire extinguishing material is filled in the reinforcing bead 12. It can be understood that the reinforcing beads 12 are formed in the shape of grooves on the inner wall of the upper case 1, and the fire extinguishing material is filled in the grooves. When battery flame is great, can burn out the inside metal coating film of last box 1, at this moment, flame can directly bump and touch the inside fire extinguishing materials of strengthening protruding muscle 12, directly puts out flame through fire extinguishing materials. Optionally, the reinforcing ribs 12 are uniformly distributed at each part of the upper box body 1, so that most of flame in the battery pack can be extinguished. Illustratively, the fire extinguishing material is a fire extinguishing substance, but not limited to, a dry powder type.
Optionally, the air pressure detection piece is used for detecting air pressure in the installation space, once thermal runaway occurs inside the battery pack, the single body can explode a large amount of high-temperature and high-pressure gas, and the air pressure detection piece can sense the information. Illustratively, the air pressure detection element is a pressure sensor, and the pressure sensor is connected with a BATTERY BMS system (BATTERY MANAGEMENT SYSTEM ) to report detection information to the BMS, so that effective monitoring of thermal diffusion of the BATTERY assembly can be realized, and the mode makes up for possible erroneous prejudgment caused by voltage signals. Optionally, the upper box assembly further includes a plurality of vent valves for communicating the installation space with the external atmosphere, and the vent valves are disposed at the diversion structure 17.
Specifically, the installation surfaces of the plurality of parts include a vent valve fixing surface 18, the vent valve fixing surface 18 is located at the diversion structure 17, a plurality of vent valve installation through holes 181 are formed in the vent valve fixing surface 18, and the vent valve is arranged in the vent valve installation through holes 181. And (3) taking the single thermal runaway high-pressure gas as input, performing CFD simulation, calculating gas leakage pressure distribution, and selecting a pressure balance position to determine the fixed surface 18 of the vent valve. Wherein the number of the positions of the air permeable valves is 2-5. Meanwhile, the air pressure detection piece is integrated on the vent valve and is positioned on one side of the vent valve, which is positioned in the installation space, so as to detect the air pressure change in the installation space. Through CFD joint simulation of releasing high-pressure high-temperature gas when the battery monomer is out of control due to heat, the part, with the most severe pressure change in the cavity, of the upper box body 1 of the battery can be determined, and the sensing position of the pressure sensor is arranged at the position, so that the pressure change in the battery pack can be effectively detected.
And by combining the structural design of the gas channel 13, the flow guide structure 17 and the confluence groove 16, after the battery pack is out of control due to heat, the released high-pressure high-temperature gas can flow to the confluence groove 16 through the gas channel 13, and at the moment, the pressure sensor can measure the air pressure in the installation space. Until the gas pressure in the groove 16 that converges is enough big, gas can no longer flow into the groove 16 that converges, and the atmospheric pressure in the whole installation space is all very big this moment, can break through the breather valve, then the gas in the groove 16 that converges is under the guide of water conservancy diversion structure 17, flows out by breather valve installation through-hole 181 fast, because the gas velocity of flow is very fast, breather valve installation through-hole 181 sends sharp-pointed sound with the help of gas, provides physics audible alarm for driver or passenger. The scheme is safe and reliable, and the problem that the signal cannot be alarmed possibly due to BMS signal loss and low-voltage communication interruption is solved.
This embodiment still provides a battery assembly, including battery module assembly, lower box and as above-mentioned last box assembly, go up box 1 and box connection down to form sealed installation space between last box 1 and the lower box, battery module assembly sets up in installation space. Through using above-mentioned upper box assembly, at battery thermal runaway initial stage, metal coating and fire extinguishing material can put out flame, and when battery thermal runaway explodes, upper box 1 can cushion the impact that battery thermal runaway explodes the production. Meanwhile, the air pressure detection piece can monitor the air pressure change in the installation space, and plays a role in alarming when fire, explosion and the like happen.
The embodiment also provides an electric vehicle which comprises the battery assembly. Through using above-mentioned battery assembly, at battery thermal runaway initial stage, can put out flame, can also report to the police to driver or passenger, avoid bodily injury to can reserve the time of fleing for the passenger when the battery thermal runaway explodes, promote electric vehicle's security performance.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. An upper case assembly, comprising:
the upper box body (1) is provided with a fixed flange (11), a plurality of reinforcing convex ribs (12) and a plurality of part mounting surfaces, and the fixed flange (11) is connected with the lower box body so as to form a sealed mounting space between the upper box body (1) and the lower box body;
a metal coating which is attached to the inner surface of the upper box body (1);
the fire extinguishing material is filled in the reinforcing convex rib (12);
and the air pressure detection piece is used for detecting the air pressure in the installation space.
2. The upper tank assembly according to claim 1, wherein the top surface of the upper tank (1) is upwardly convex to form a gas passage (13) inside the upper tank (1), the gas passage (13) being located at a middle portion of the top surface of the upper tank (1) and extending to an edge of one side of the upper tank (1).
3. The upper tank assembly according to claim 2, wherein the plurality of component mounting surfaces includes a first component mounting surface (14), and the first component mounting surface (14) is provided on a top surface of the upper tank (1) above the gas passage (13).
4. The upper tank assembly according to claim 2, wherein the top surface of the upper tank (1) is upwardly convex to form a plurality of bosses (15).
5. The upper box assembly according to claim 4, wherein the plurality of bosses (15) include a first boss (151) at one end of the upper box (1), the first boss (151) protrudes upward to form a confluence groove (16) inside the upper box (1), a splayed flow guide structure (17) is arranged between the confluence groove (16) and the gas channel (13), a large-diameter end of the flow guide structure (17) is communicated with the confluence groove (16), and a small-diameter end of the flow guide structure is communicated with the gas channel (13).
6. Upper tank assembly according to claim 5, further comprising a plurality of venting valves for communicating the installation space with the external atmosphere, the venting valves being provided at the flow directing structure (17).
7. The upper tank assembly according to claim 1, further comprising a plurality of shock absorbing members disposed between the upper tank (1) and a vehicle body.
8. The upper tank assembly according to claim 1, wherein a plurality of reinforcing structures (111) are arranged on the fixing flange (11) at intervals, and the reinforcing structures (111) are connected between the fixing flange (11) and the upper tank (1).
9. A battery assembly comprising a battery module assembly, a lower case, and an upper case assembly according to any one of claims 1 to 8, wherein the upper case (1) is coupled to the lower case to form a sealed installation space between the upper case (1) and the lower case, and the battery module assembly is disposed in the installation space.
10. An electric vehicle characterized by comprising the battery assembly according to claim 9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110738470.8A CN113471588B (en) | 2021-06-30 | 2021-06-30 | Upper box assembly, battery assembly and electric vehicle |
| PCT/CN2022/089191 WO2023273568A1 (en) | 2021-06-30 | 2022-04-26 | Upper box body assembly, battery assembly, and electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110738470.8A CN113471588B (en) | 2021-06-30 | 2021-06-30 | Upper box assembly, battery assembly and electric vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113471588A true CN113471588A (en) | 2021-10-01 |
| CN113471588B CN113471588B (en) | 2022-10-11 |
Family
ID=77876749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110738470.8A Active CN113471588B (en) | 2021-06-30 | 2021-06-30 | Upper box assembly, battery assembly and electric vehicle |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN113471588B (en) |
| WO (1) | WO2023273568A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023273568A1 (en) * | 2021-06-30 | 2023-01-05 | 中国第一汽车股份有限公司 | Upper box body assembly, battery assembly, and electric vehicle |
Citations (37)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050174092A1 (en) * | 2003-10-28 | 2005-08-11 | Johnson Controls Technology Company | Battery system |
| CA2523240A1 (en) * | 2005-10-11 | 2007-04-11 | Delaware Systems Inc. | Universal battery module and controller therefor |
| JP2010097836A (en) * | 2008-10-17 | 2010-04-30 | Panasonic Corp | Battery pack, electronic equipment using it as power source, and battery pack case |
| US20110297402A1 (en) * | 2010-06-03 | 2011-12-08 | Cesar Belmonte | Fire-Suppressing Ceiling Panels |
| US20120231306A1 (en) * | 2009-04-22 | 2012-09-13 | Tesla Motors, Inc. | Battery Pack Venting System |
| US20120237803A1 (en) * | 2009-04-22 | 2012-09-20 | Tesla Motors, Inc. | Battery Pack Directed Venting System |
| CN103066225A (en) * | 2013-01-24 | 2013-04-24 | 东风汽车公司 | Power battery pack assembly structure of all-electric vehicle |
| CN203218356U (en) * | 2013-04-15 | 2013-09-25 | 中国第一汽车股份有限公司 | Novel main structure of power battery |
| CA2870239A1 (en) * | 2012-04-24 | 2013-10-31 | Valmet Automotive Oy | Battery pack with a fire preventing agent |
| JP2014061218A (en) * | 2012-09-24 | 2014-04-10 | Ngk Insulators Ltd | Combination product |
| US20150069068A1 (en) * | 2013-09-09 | 2015-03-12 | The Boeing Company | Containers for fire containment |
| WO2016076420A1 (en) * | 2014-11-14 | 2016-05-19 | 日本電気株式会社 | Storage battery unit and power storage device |
| CN205621780U (en) * | 2016-04-07 | 2016-10-05 | 中国第一汽车股份有限公司 | Liquid cooling power battery end plate assembly |
| CN206436811U (en) * | 2016-09-22 | 2017-08-25 | 中国第一汽车股份有限公司 | A kind of electric automobile power battery attachment structure |
| CN206878064U (en) * | 2017-05-23 | 2018-01-12 | 杭州拂晓新材料科技有限公司 | Covered on a kind of electric automobile battery box |
| CN108140773A (en) * | 2015-12-09 | 2018-06-08 | 株式会社Lg化学 | Battery pack and the vehicle including battery pack |
| CN108832034A (en) * | 2018-05-31 | 2018-11-16 | 肇庆中能创智信息科技有限公司 | A kind of new energy car battery box with quick extinguishing function |
| CN109515216A (en) * | 2018-12-06 | 2019-03-26 | 中国第汽车股份有限公司 | Power battery of pure electric automobile assembly structure |
| CN110235272A (en) * | 2017-01-13 | 2019-09-13 | 株式会社村田制作所 | The manufacturing method of battery tray disk cover, battery tray with cover and battery |
| CN209592101U (en) * | 2018-12-13 | 2019-11-05 | 东风汽车集团有限公司 | A kind of pure electric automobile battery system and pure electric automobile |
| CN209747594U (en) * | 2019-05-29 | 2019-12-06 | 宁德时代新能源科技股份有限公司 | Battery box, battery package and vehicle |
| CN209804762U (en) * | 2019-05-22 | 2019-12-17 | 北京新能源汽车股份有限公司 | Upper cover of power battery, power battery and vehicle |
| CN110767931A (en) * | 2019-09-27 | 2020-02-07 | 吴海平 | Manufacturing method of explosion-proof storage battery |
| CN210047150U (en) * | 2019-02-25 | 2020-02-11 | 保定市宏腾科技有限公司 | Composite material integrated structure |
| WO2020059080A1 (en) * | 2018-09-20 | 2020-03-26 | 日産自動車株式会社 | Battery pack |
| CN111509163A (en) * | 2020-05-25 | 2020-08-07 | 重庆金康动力新能源有限公司 | Battery pack with fire extinguishing function |
| CN211507720U (en) * | 2020-03-05 | 2020-09-15 | 中国第一汽车股份有限公司 | Upper box assembly and power battery |
| CN212271375U (en) * | 2020-03-17 | 2021-01-01 | 李雪芳 | Suspended ceiling board with heat insulation and sound absorption functions |
| CN212303792U (en) * | 2020-05-29 | 2021-01-05 | 蜂巢能源科技有限公司 | Power battery package and vehicle |
| CN112234285A (en) * | 2020-05-29 | 2021-01-15 | 蜂巢能源科技有限公司 | Power battery pack |
| CN112259890A (en) * | 2018-02-10 | 2021-01-22 | 佛山市建金建电子科技有限公司 | Fire-proof and explosion-proof battery pack with high safety |
| CN212485392U (en) * | 2020-06-30 | 2021-02-05 | 中国第一汽车股份有限公司 | Soft packet of power battery assembly of pure electric vehicles and pure electric vehicles |
| CN212499287U (en) * | 2020-04-24 | 2021-02-09 | 纳诺科技有限公司 | Fireproof impact-resistant heat insulation pad and fireproof impact-resistant heat insulation cover of battery box |
| CN112448078A (en) * | 2019-09-05 | 2021-03-05 | 三星Sdi株式会社 | Energy storage module |
| CN212967934U (en) * | 2020-09-11 | 2021-04-13 | 恒大新能源汽车投资控股集团有限公司 | Cover body of battery pack and battery pack |
| CN213278306U (en) * | 2020-09-25 | 2021-05-25 | 蜂巢能源科技有限公司 | Battery cover plate of battery module and battery assembly |
| CN112968249A (en) * | 2021-02-01 | 2021-06-15 | 王晶 | Automatic fire extinguishing equipment for battery box of new energy automobile |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012014348A1 (en) * | 2010-07-28 | 2012-02-02 | パナソニック株式会社 | Cell module and cell pack |
| CN203562456U (en) * | 2013-09-30 | 2014-04-23 | 长城汽车股份有限公司 | Vehicle dynamic battery package |
| CN208797082U (en) * | 2018-11-13 | 2019-04-26 | 宁德时代新能源科技股份有限公司 | A kind of battery pack |
| CN209544470U (en) * | 2019-04-16 | 2019-10-25 | 南京天河汽车零部件股份有限公司 | A kind of new energy car battery case weld assembly |
| CN212011040U (en) * | 2020-05-25 | 2020-11-24 | 北京新能源汽车股份有限公司蓝谷动力系统分公司 | Upper cover structure of power battery, power battery and electric automobile |
| CN113471588B (en) * | 2021-06-30 | 2022-10-11 | 中国第一汽车股份有限公司 | Upper box assembly, battery assembly and electric vehicle |
-
2021
- 2021-06-30 CN CN202110738470.8A patent/CN113471588B/en active Active
-
2022
- 2022-04-26 WO PCT/CN2022/089191 patent/WO2023273568A1/en unknown
Patent Citations (37)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050174092A1 (en) * | 2003-10-28 | 2005-08-11 | Johnson Controls Technology Company | Battery system |
| CA2523240A1 (en) * | 2005-10-11 | 2007-04-11 | Delaware Systems Inc. | Universal battery module and controller therefor |
| JP2010097836A (en) * | 2008-10-17 | 2010-04-30 | Panasonic Corp | Battery pack, electronic equipment using it as power source, and battery pack case |
| US20120231306A1 (en) * | 2009-04-22 | 2012-09-13 | Tesla Motors, Inc. | Battery Pack Venting System |
| US20120237803A1 (en) * | 2009-04-22 | 2012-09-20 | Tesla Motors, Inc. | Battery Pack Directed Venting System |
| US20110297402A1 (en) * | 2010-06-03 | 2011-12-08 | Cesar Belmonte | Fire-Suppressing Ceiling Panels |
| CA2870239A1 (en) * | 2012-04-24 | 2013-10-31 | Valmet Automotive Oy | Battery pack with a fire preventing agent |
| JP2014061218A (en) * | 2012-09-24 | 2014-04-10 | Ngk Insulators Ltd | Combination product |
| CN103066225A (en) * | 2013-01-24 | 2013-04-24 | 东风汽车公司 | Power battery pack assembly structure of all-electric vehicle |
| CN203218356U (en) * | 2013-04-15 | 2013-09-25 | 中国第一汽车股份有限公司 | Novel main structure of power battery |
| US20150069068A1 (en) * | 2013-09-09 | 2015-03-12 | The Boeing Company | Containers for fire containment |
| WO2016076420A1 (en) * | 2014-11-14 | 2016-05-19 | 日本電気株式会社 | Storage battery unit and power storage device |
| CN108140773A (en) * | 2015-12-09 | 2018-06-08 | 株式会社Lg化学 | Battery pack and the vehicle including battery pack |
| CN205621780U (en) * | 2016-04-07 | 2016-10-05 | 中国第一汽车股份有限公司 | Liquid cooling power battery end plate assembly |
| CN206436811U (en) * | 2016-09-22 | 2017-08-25 | 中国第一汽车股份有限公司 | A kind of electric automobile power battery attachment structure |
| CN110235272A (en) * | 2017-01-13 | 2019-09-13 | 株式会社村田制作所 | The manufacturing method of battery tray disk cover, battery tray with cover and battery |
| CN206878064U (en) * | 2017-05-23 | 2018-01-12 | 杭州拂晓新材料科技有限公司 | Covered on a kind of electric automobile battery box |
| CN112259890A (en) * | 2018-02-10 | 2021-01-22 | 佛山市建金建电子科技有限公司 | Fire-proof and explosion-proof battery pack with high safety |
| CN108832034A (en) * | 2018-05-31 | 2018-11-16 | 肇庆中能创智信息科技有限公司 | A kind of new energy car battery box with quick extinguishing function |
| WO2020059080A1 (en) * | 2018-09-20 | 2020-03-26 | 日産自動車株式会社 | Battery pack |
| CN109515216A (en) * | 2018-12-06 | 2019-03-26 | 中国第汽车股份有限公司 | Power battery of pure electric automobile assembly structure |
| CN209592101U (en) * | 2018-12-13 | 2019-11-05 | 东风汽车集团有限公司 | A kind of pure electric automobile battery system and pure electric automobile |
| CN210047150U (en) * | 2019-02-25 | 2020-02-11 | 保定市宏腾科技有限公司 | Composite material integrated structure |
| CN209804762U (en) * | 2019-05-22 | 2019-12-17 | 北京新能源汽车股份有限公司 | Upper cover of power battery, power battery and vehicle |
| CN209747594U (en) * | 2019-05-29 | 2019-12-06 | 宁德时代新能源科技股份有限公司 | Battery box, battery package and vehicle |
| CN112448078A (en) * | 2019-09-05 | 2021-03-05 | 三星Sdi株式会社 | Energy storage module |
| CN110767931A (en) * | 2019-09-27 | 2020-02-07 | 吴海平 | Manufacturing method of explosion-proof storage battery |
| CN211507720U (en) * | 2020-03-05 | 2020-09-15 | 中国第一汽车股份有限公司 | Upper box assembly and power battery |
| CN212271375U (en) * | 2020-03-17 | 2021-01-01 | 李雪芳 | Suspended ceiling board with heat insulation and sound absorption functions |
| CN212499287U (en) * | 2020-04-24 | 2021-02-09 | 纳诺科技有限公司 | Fireproof impact-resistant heat insulation pad and fireproof impact-resistant heat insulation cover of battery box |
| CN111509163A (en) * | 2020-05-25 | 2020-08-07 | 重庆金康动力新能源有限公司 | Battery pack with fire extinguishing function |
| CN212303792U (en) * | 2020-05-29 | 2021-01-05 | 蜂巢能源科技有限公司 | Power battery package and vehicle |
| CN112234285A (en) * | 2020-05-29 | 2021-01-15 | 蜂巢能源科技有限公司 | Power battery pack |
| CN212485392U (en) * | 2020-06-30 | 2021-02-05 | 中国第一汽车股份有限公司 | Soft packet of power battery assembly of pure electric vehicles and pure electric vehicles |
| CN212967934U (en) * | 2020-09-11 | 2021-04-13 | 恒大新能源汽车投资控股集团有限公司 | Cover body of battery pack and battery pack |
| CN213278306U (en) * | 2020-09-25 | 2021-05-25 | 蜂巢能源科技有限公司 | Battery cover plate of battery module and battery assembly |
| CN112968249A (en) * | 2021-02-01 | 2021-06-15 | 王晶 | Automatic fire extinguishing equipment for battery box of new energy automobile |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023273568A1 (en) * | 2021-06-30 | 2023-01-05 | 中国第一汽车股份有限公司 | Upper box body assembly, battery assembly, and electric vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113471588B (en) | 2022-10-11 |
| WO2023273568A1 (en) | 2023-01-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20110250477A1 (en) | Battery module | |
| CN110875443B (en) | Protection component, closing cap and box | |
| CN110828747A (en) | Thermal protection system for power battery | |
| CN107757399A (en) | A kind of battery management system with safety management | |
| CN113471588B (en) | Upper box assembly, battery assembly and electric vehicle | |
| CN207587767U (en) | A kind of lithium ion battery fireproof anti-explosion device | |
| CN108736079A (en) | A kind of power battery thermal runaway diffusion early warning system and method | |
| US11992719B2 (en) | Fire-fighting fluid storage apparatus of battery pack | |
| CN106864269A (en) | A kind of guard method of electrokinetic cell collision safety and device | |
| CN210628393U (en) | Battery, battery module and battery system | |
| CN112038560A (en) | Battery package thermal runaway early warning fire extinguishing systems | |
| EP3731301B1 (en) | Energy storage device | |
| CN107185132A (en) | Battery bag | |
| CN207425965U (en) | A kind of battery pack housing | |
| CN109148980A (en) | The safety sensor module of vehicle communication is carried out with the first respondent | |
| CN112615094A (en) | Battery module for vehicle and vehicle | |
| US20230187771A1 (en) | Battery arrangement and method for discharging a gas from a battery cell | |
| KR20210101820A (en) | Flameless venting device for a battery pack of a electric car | |
| CN215578941U (en) | Battery module thermal runaway protective structure | |
| CN213752877U (en) | Battery pack and vehicle with same | |
| CN208028184U (en) | A kind of power battery thermal runaway diffusion early warning system | |
| CN113018730A (en) | Power battery extinguishing device, battery box body and battery pack thereof | |
| CN214336839U (en) | Battery pack upper shell and battery pack | |
| CN220860535U (en) | Battery unit with built-in fireproof system | |
| CN219610653U (en) | Battery case lid, battery module and energy storage system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |