Dynamical cell bag is one of component of electric car core, batteries bag weight is occupied about truckload gross weight 20-30% , also be truckload the cost in production is occupied than one of high components. Well-known, batteries wraps special to the requirement of security Yan Ke, also decided at the same time truckload the expression on power and add boat course of development. Want to promote property, the weight of automobile body whole is crucial also. Among them weight takes the battery of near 1/3 the parcel is small quantified a problem to also become a key. Why does batteries bag want light quantify? Study data makes clear, traditional fuel car is decreased heavy 10% , economy can promote 6-8% ; And wait for fast travel operating mode to fall, electric car is self-prossessed reduce 10% , can make truckload increase 10% right-and-left add to sail course of development. So how to promote add boat course of development? In light of the point of view that includes from batteries, because the limitation on constituent of electric core material and dimension is bigger, want to decrease so can fluctuate from the structure only again hand, casing is light quantify and modular group is compact change the key way that for instantly look forward to of car of new energy resources studies. How to realize batteries is the parcel small quantify? What batteries wraps is light it is roughly OK to quantify cent designs the level and detailed design level for system of —— of two big levels. Class of specific fractionize layer can see figure below: Light quantify, the construction that batteries includes still still needs to satisfy rigid security, sealed insulation and fire prevention to wait for safe demand. The intensity of casing structure, stiffness, be able to bear or endure bump into gender, stability to be able to wrap function to produce an effect to batteries. Light in quantified road, relatively efficient way has the following 5 easy ways: 01 optimize batteries bag to decorate means to wrap casing in batteries inside limited space, a certain quantity of batteries monomer forms batteries model group through specific and mechanical join and electrical continuity bonding. The dimensional form that includes with batteries according to the car and bear the weight of characteristic, series-parallel connection of batteries model group discharges cloth to form dynamical cell system, group of the model in batteries bag is decorated and configuration difference is bigger. Commonly used type has batteries monomer carapace of cylindrical, quadrate aluminium and film of mild package aluminous model, interior of bag of pool of this dispatches from foreign news agency still is decorated wiring harness of BMS controller, high pressure waits for auxiliary function component. Dynamical cell wraps decorate a form normally by truckload dimensional feature decision, need to consider car drive means, truckload the element such as centre of gravity place and road clearance. Foundation of company of production of dynamical cell bag is truckload business demand, development goes modular group to discharge cloth the car of each different uses shape of bodily form of lodge of different, batteries and installation hanger position dynamical cell bag. Through ceaseless research and development, batteries wraps commonly used structure to decorate a form to automobile body bottom hangs type of buy type, an organic whole of automobile body structure and standard casing distributed etc. Automobile body bottom hangs buy type to inchoate and electric car changes his costume or dress by traditional fuel car more and be become, dynamical cell bag installs the position such as bottom of cabin, mothball before the car box, floor normally, the day that following plan institute show produces package of batteries of form of Leaf“ sunken ” . Day produces Leaf batteries to wrap automobile body bottom to hang bag of buy type batteries to use bolt to join at car frame bottom, have a design it is good that efficient and agile, production creates independent character wait for an advantage, it is to multiply the dynamical cell that uses extensively with the car to wrap configuration, if day produces the model such as EV of a person of extraordinary powers of Leaf, auspicious emperor. Casing is distributed standard casing is distributed it is to pass a few identical or the series-parallel connection of bag of standard casing batteries with similar structure forms batteries system, have decorate agile, install the characteristic such as positional diversity. The space is larger and neat passenger car or special car use this kinds of configuration more, if eaves connects E10 pure electric passenger car. Type of an organic whole of automobile body structure rises ceaselessly as the demand of course of development of boat of electric car add, the space suffers bounds traditional car structure to cannot satisfy actor to design a requirement, batteries of type of an organic whole of automobile body structure wraps a structure to decorate a form to be taken seriously gradually. Electric car is making electric car special to the maturity that designs a technology design platform appears, the electric car of wide steam GEB that shows like plan institute is special design platform, reach batteries bag confluence in automobile body structure. Platform of wide steam GEB is dynamoelectric car add sails demand of course of development increases, adscititious car is developing to what design a technology, make automobile body design and batteries bag structure be developed in coordination, structure of automobile body of do one's best is compact at the same time batteries includes property relatively actor. Instantly, platform is changed, bag of modular cell of power of type of an organic whole of automobile body structure is added gradually much, the model such as the Model S that if carry platform of TESLA of the Ao Di Q4 E-tron of masses MEB platform, tesla,designs and Model X. 02 optimize system of batteries model group to design the level, batteries parcel is small quantify a design to choose to begin from electric core parameter and monomer dimension first. Core of cable of power of ion of the lithium below different and chemical system and dimension parameter and existence of dynamical cell system match design problem, need to decide in computation of design phase of batteries system concept normally. It is after decorate through optimizing interior of batteries lodge system, reduce design layer level, achieve casing space old utilization rate. Could there be for example the form do not have a model that heart times offers designs a technology (Cell To Pack, CTP) , the graph takes the place of for Ning Deshi design of some CTP construction of system. In design of this CTP of example of application of design of CTP of peaceful heart times, used monomer and batteries management system to be secured directly in batteries bag housing, the buy inside electric core is in fluctuation housing, glue of heat conduction of housing interior fill. In addition, between electric core sidewall and electric core housing inside put pressure or temperature sensor, can discharge below synergism of two kinds of sensor check monomer of bad report core, and be explored ahead of schedule produce the safe accident such as hot out of control possibly to electric core. Because this design form does not use modular group structure, make batteries wrapped bulk utilization rate to promote 15-20% ; Electric core is assembled alone, reduce assemble difficulty, improve manufacturing efficiency about 50% ; More important is, what can realize breakdown report core is seasonable detect with change, electric core housing strengthens plan to be able to reduce what batteries encrusts to defend grade. 03 new-style into group kind big module the dimension of core of report of design general monomer and capacity increase, the structural member quality that causes share of core of every monomer report decreases. Could there be for example the old standard group of heart times designs a structure: Example of design of battery of CATL old standard designs the batteries casing in cancelling to have a technology through old standard group, pass batteries model series directly fixed cross the sleeve that prop up and installation Liang An outfit is in truckload on, implementation batteries parcel is small quantify raised batteries bag to be in at the same time truckload on join intensity. Unifinication design reduces batteries to include the intermediate layer form such as modular group, achieve dimension of monomer report core beautiful, raise casing space utilization rate. For example bag of batteries of ” of batteries of “ razor blade devises plan, if plan institute is shown, give a kind through the design compressed change core of large size report, use array to discharge interior of system of lodge of batteries of park of cloth pattern cloth, monomer batteries inserts batteries like ” of “ razor blade in the bag. Biyadi it is reported of bit batteries structure, this design can make batteries bag promotes than energy 50% the left and right sides, manufacturing cost is reduced about 30% . The material of grand opera —— that application of 04 light simple stuff comes to to today is light quantify. Is why saying play of head of “ heavy ” ? In decreasing heavy design because of casing, apply light simple stuff to reduce serious effect to casing whole very apparent. The light simple stuff with relatively at present mature application is aluminum-magnesium alloy and composite material two kinds big. Metal kind in material, aluminium alloy besides weight it is light, good to fight oxygen besides, still be helpful for reclaiming, the applied amount on batteries bag is very large. Considering structural intensity, die-casting aluminous box and extruding - box of aluminium spelling solder is multi-purpose issueing casing, punch - box of aluminium spelling solder is used in top part lid commonly. Aluminium alloy comes to metalloid material in the application in batteries bag here, composite material it may be said is current big popular. The weight imponderability that it has, insulation property good, treatment shapes handy advantage is in batteries bag and even truckload go up to carry forward. At present case of such as engine cover, oily base, batteries includes top part in the domain such as the lid, the component that all sorts of composite material make is in large-scale replace traditional metal component. Composite material includes medium application in batteries but also want to notice, the limitation of the respect such as raw material of composite material be enslaved to be enslaved to, cost, the fine having Bo with at present more application increases plastic (SMC) , and of all kinds modified resin. Data shows, the top of batteries bag top part that SMC makes is decreased than upper cover of traditional metal stuff it is about again 38% , composite material application also is in carbon fiber to be added gradually much, composite material reduces serious effect apparent. Partial enterprise tries to use composite material in the motherboard below electric car, but character of composite material stiffness is wronger, need adds large size to perhaps use interlining structure to promote the character of the structure that defy a turn. Can wrap next casing to design interlining structure in batteries at the same time, and inter layer increases a metal or beehive aluminous structure, metal and metalloid union, have light qualitative excel in, be able to bear or endure it is good to bump into a gender wait for a lot of advantage. Exemple issueing a list lifted the performance data of all sorts of light simple stuff and characteristic: The light simple stuff such as magnalium alloy, composite material includes a construction in batteries serious effect is reduced gently in quantifying a design remarkable, but the existence in pledging material application wraps a structure to design in batteries gently at present was not worth at 2 o'clock below: Combinative batteries wraps crucial function to develop a function and light the batteries bag structure that quantifies the effect to all actor or actress is defective, method of the research achievement that can draw lessons from, design is not much; Right stuff is used in proper place to there already was preliminary applying in design of batteries bag structure, but method of type selecting of much to batteries bag material, the much material that combines function obligation designs a method to consider to be not worth. Design of limit of 05 limits design is to show in product detailed design level undertakes function is optimized or later period undertakes designing reforming to the product. The limit designs the critical cost that requires clear design, want to satisfy each function requirement not only, still need to satisfy component treatment, product to assemble craft to ask. The limit is designed CAE of have the aid of is normally right product critical value and manufacturing technology parameter explore each property, through CAE energy of emulation analysis technology follows fixed position. Bear the weight of batteries lodge body for example place strengthens a design, and rather than bearings place uses thin wall data, casing does not spend implementation structure function to satisfy a design to ask to be decreased as far as possible again with positional thickening heavy. Besides these light beyond quantified demand, the development of instantly auto industry is right plastic posed more demand and challenge.