+ Publish Ad FREE !
Ads stats: last 24h - 58, actual - 962, total - 108478

Under the skin: a crash course in making electric cars collision-safe

18 May 2020 - autocar

Under the skin: a crash course in making electric cars collision-safe

EVs have different structures and safety technology to provide protection in a collision. We take a closer look

How safe is an electric car in a crash and what are manufacturers doing to make them safe? These questions crop up a lot and are usually triggered by lurid videos of an EV being consumed in a battery-fuelled inferno, but that doesn't make electric cars any more dangerous than their fossil-fuelled equivalents when things go wrong.

To minimise damage to the high-voltage battery in an impact, manufacturers are rethinking their approach to vehicle architecture. Fully encased, floor-mounted batteries provide a protective environment but deflecting the energy of an impact away from the battery is also important.

Polestar has developed the 'SPOC Block' (severe partial offset crash) for its 2 EV. This consists of two aluminium blocks set in either side of the front bulkhead. The blocks prevent front wheels being driven backwards into the battery compartment during a partially offset frontal collision.

The EV also has a new front lower load path (FLLP – how the structure diverts the forces from an impact) to further protect the battery and occupants from frontal impacts, including one of the worst: from a pole.

Design can help push back the threshold of fatal injury to a car's structure but eventually the laws of physics have their way. All cars rely on one fundamental thing to do their job and that's energy – and lots of it. MPGe (miles per gallon gasoline equivalent) puts the energy contained in a single gallon of petrol at around 40kWh, equivalent to the battery capacity of many smaller EVs. Whether a car is powered by a battery, petrol or diesel, the energy it stores is likely to be released in a major crash.

EV batteries are a little more tricky than conventional fuels because a fire inside one is due to thermal runaway, when the heat produced causes damage that results in more heat being released. It's difficult to extinguish because the battery is made up of several thousand individual cells and there will be sections of the battery that are still active and still contain energy. If the damaged battery is disturbed, thermal runaway can resume until the battery is totally kaput.

The other major difference between conventional and all-electric cars is high voltage. EVs operate at around 400V, and while the Porsche Taycan is the first EV with an 800V system, it won't be the last. For a car's occupants or emergency services personnel, damaged high-voltage cabling could be lethal, so in a crash, the battery is disconnected at source.

This isn’t a new idea: it has been a regulation in motorsport for decades to prevent electrical sparks igniting fuel in a crash and all race and rally cars must be fitted with either manual or electronic battery disconnect systems.

The usual method for disconnecting an EV battery is the firing of explosive ‘pyrofuses’, which sever the high-voltage cables close to it. Bosch revealed a new device last year triggered by a silicon chip responding to the airbag system that drives a small sharp wedge through the cable.

News By Tags

2011 models2012 models3-d printing3D printing458 italia6-series coupeA1A2ABC Automobileabc motorsabu dhabiaccidentaccidentsaccordACIMacuraAcura NSXadidasADSUadvertisingafricaagalegaAIair pollutionairbagairbagsairbusairportAlan GanooAlbionalcotestalfaalfa romeoalgeriaalibabaAllemangeAllied MotorsAlmaalpineAlpine A110Amauryamazonamendesamphibiousandroidandroid autoAnil BachooAnse-la-Raieappappleappointmentsappsapriliaarabiaargentinaarielarnold schwarzeneggerarsenalArtashok leylandasiaastonaston martinAston Martin VantageAston Martin ZagatoauctionaudiAudi E-TronAudi Q3Audi Q7Audi Q8Audi R8Audi RS3Audi RS7auditaudit reportaustraliaAustralian Grand Prixaustriaautoauto industryauto shanghaiauto showauto-écoleautonomous carautonomus carAutopilotautopont de Decaenautopont Decaenautoroute M1aventadorawardsAxessBABagatellebahrain grand prixBAIBaiduBaie-du-CapBaie-du-TombeaubajabajajBajaj PulsarBalaclavaBambousBangkok International Motor ShowBangkok Motor ShowBangladeshBarklyBatimaraisbatmobilebatterybattlebeachbeachesBeau-BassinBeau-ChampBeau-VallonBeaux SongesBeaux-SongesbeetleBeijing Auto ShowBeijing Motor ShowBel-AirBel-Air-Rivière-SècheBel-EtangBel-Ombrebelgian grand prixBelgiumBell VillageBell-VillageBelle-MareBelle-RiveBelle-RoseBelvédèreBenellibentleyBentley BentaygaBentley Continentalbernie ecclestonebetamaxbetamax casebicyclebicyclesbikebikesbiodieselbitcoinBlackBerryBlue-BaybmwBMW 3 SeriesBMW 4 SeriesBMW 8 seriesBMW i4BMW i8BMW iXBMW ix3BMW M2BMW M3BMW M4bmw m5BMW R18BMW X2bmw x3BMW X4BMW X5BMW x6BMW x7BMW z4boatboatsboeingBogota Auto ShowBois-MarchandBois-Marchand accidentBois-PignoletBois-RougeBologna Motor ShowBon-AccueilbondBonne-Terreboschboston dynamicsBPObrabusbrakesBramsthanbrazilbrexitbribebribesbridgebridgestonebrioBrisée-VerdièreBritish Grand PrixBruniquel bridgebudgetbugattiBugatti ChironBugatti La Voiture Noirebugatti veyronbuggybuickburnoutbusbusesbuyingbydcabriocadillaccalebassescamaroCamp ChapelonCamp-ChapelonCamp-de-MasqueCamp-DiableCamp-LevieuxCanadacanadian grand prixCandosCanotCap-Malheureuxcaporal Chooluncarcar buying tipscar dealercar dealerscar firecar importcar industrycar loancar marketCar Of The Yearcar rentcar rentalcar salecar salescar servicecar sharingcar showcar theftcar washcar washingCar Wrappingcarbon fibercarburantsCarlos GhosnCarPlaycarscartingcascavelleCaudanCaudan WaterfrontCCIDCCTVCEBcelebretiescelebritiescentre de fitnessCentres De Fitnesscertificat de fitnesscertificats de fitnessCESCFMotoChamarelChamp de MarsChamp-de-MarsChebelChemin-GrenierChengdu Motor ShowcherychevroletChevrolet CamaroChevrolet ColoradoChevrolet CorvetteChicago Auto ShowchinaCHINESE GRAND PRIXChris EvanschryslerCité VallijeecitroenCitroen Berlingocitroen c3Citroen C4Citroen C5civicclassicclassic carclassic carsclassicsClémenciacode de la routecollectioncommercialcomparisoncompensationconceptconceptsConfinementConstanceconsumer reportsContract buscontraventionsconvertiblecoromandelCoronaviruscorruptioncorvetteCottagecour suprêmeCourtCourtscouvre-feuCOVID-19CPBcr-vcrashcrash testcrash testsCrève-CoeurCristiano Ronaldocroatiacrossovercrowdfundingcruise shipCubaCupraCurepipecurfewcustom bikecustom carcustomsCUVCWACyberciteCybertruckcycloneD’Epinaydaciadaihatsudaimlerdakardakar rallydartzdash camdashcamdatsunDavid Beckhamde tomasodealersdéconfinementdecongestion routiereDelhi Auto ExpodeloreandesignDetroitDetroit Auto Showdéviationdéviationsdéviations routièresdieseldiesel bandiesel scandaldieselgateDimple RaghooDIVADIYDLCdodgedodge demonDonald TrumpDPPdragdrag battledrag racedrag racingdriftdriftingdriver licensedriverless cardrivers licensedrivingdriving licensedriving schooldriving schoolsdriving testdriving tipsdronedronesdrug racedrugsdrunk drivingdsDubaiDubai Motor ShowducatiDucati ScramblerDysonearthquakeEbayebeneEbène Car ParkecoecologyeconomyÉcroignardEducationEgyptEICMAelecticelectionselectricelectric scooterelon muskemissionsEmmanuel Macronengen motor showengineenginesEOCescroquerieethanoletios livaEUEuropeeveventsexamexamens de conduiteexamsexcès de vitesseexpofacebookfailfakefake policeFast & FuriousFast And Furiousfaux coupons de parkingfaux permisfaux permis de conduirefbiFCAfeeder busfeeder busesfermetureFernando Alonsoferrariferrari 812ferrari f40Ferrari Portofinoferrari romaferryFHTAFIAfiatfiestafilmsfinancesfinefinesfinlandFireFirefightersfishersfishingfiskerfitness centerFitness certificateFlacqFlic-en-FlacfloodFloodsFlorealflying carflying taxiFond du SacFond-du-SacFootballForbachForbach accidentforce indiafordFord BroncoFord F-150ford fiestaford focusFord GTFord mustangFord Mustang Mach-EFord RangerFord Transitforest-sideformula Eformula1forza motorsportFrancefrankfurtfrankfurt motor showfraudFSCfuelfuel economy scandalfuel pricefuel stationfuel stationsfunnyfutureGaikindo Indonesia International Auto ShowGaikindo Indonesia International Motor Showgamesgare de Rose-HillGare du Nordgare VictoriagasgeargeelygenesisGeneva Auto Showgeneva motor showgerman grand prixGermanygirlsgmgodzillagolfgolf carGoodlandsgoodwoodGoodwood Festival of Speedgooglegoogle glassgoogle mapsGoProgovernmentgpsgran turismogrand baiegrand tourgrand-baieGrand-BassinGrand-BoisGrand-GaubeGrande-RivièreGrande-Rivière-Nord-Ouestgreat wallgreecegreengreen energygrnoGros-BoisGros-CaillouxGRSE accidentGTAGymkhanahackershakershamannharley davidsonharley-davidsonHatchbackhealthcarehellcatHennesseyHenriettaHermitageherohertzhighlandshistoryhit and runhitachiholdenHollandHollywoodhondaHonda AccordHonda BrioHonda Cityhonda civicHonda Civic type rhonda cr-vHonda Ehonda fitHonda Gold WingHonda HR-Vhonda jazzhonda monkeyHonda N-BoxHonda PassportHonda s2000Honda s660Honda VezelHong Konghong-konghorse racinghorsepower falsifyingHospitalhospitalshot rodhot wheelshotelhotelshoverbikehoverboardhow toHSCHuayrahummerHummer H1Hummer H2humorhungarian grand prixhurricaneHusqvarnahybridhydrogenhypercarhypercarshyundaiHyundai BayonHyundai CretaHyundai ElantraHyundai i20Hyundai i20 Nhyundai ioniqHyundai Ioniq 5Hyundai KonaHyundai NexoHyundai Santa Cruzhyundai Santa Fehyundai sonataHyundai TucsonHyundai VelosterHyundai Venuei3i40ICACiframacIIHSillegal fishingillegal racesillegal racingillegal rallyillegal taxiillegal transportIMCimportindiaIndia Auto ExpoIndian Motorcycleindian motorcyclesIndian OilindicaIndonesiaIndonesia International Motor Showindonesia motor showinfinitiInfinityinfotainmentinfrastructureinsuranceInsurance Industry Compensation FundintelinteriorinteriorsiPadiphoneiranirelandIRPisraelisuzuIsuzu D-maxIsuzu MU-Xitaliaitalian grand prixItalyjaguarJaguar Land Roverjamesjames bondJames MayJan Palach stationjapanjapaneese carsjapanese carjapanese carsJapanese Grand PrixJawajazzJDMjeepJeep CherokeeJeep CompassJeep GladiatorJeep Grand CherokeeJeep Grand WagoneerJeep Renegadejeep wranglerJeremy ClarksonjettaJin FeijobjobsJohn Deerejustin bieberkartkawasakiKawasaki Ninjakei carken blockKenyakhankiaKia CeedKia EV6Kia ForteKia NiroKia Optimakia picantoKia SorentoKia SportageKia Stingerkia TellurideKoenigseggkoreaKoshik ReesaulKTMKTM 1290 Super Duke RRKTM DukeKymcoL’AmitiéL’AventureL’EscalierLALA Auto ShowLa Brasseriela butteLa CaverneLa ChaumièreLa FloraLa GauletteLa MarieLa PrairieLa Tour KoenigLa VigieladaLallmatielamborghiniLamborghini Aventadorlamborghini diablolamborghini gallardolamborghini huracanLamborghini SiánLamborghini UruslanciaLancia Stratoslandland cruiserland roverLand Rover DefenderLand Rover DiscoveryLarsen & ToubroLaventurelawlawslazarethLDALe HochetLe MornelealleasingLebanonLeevy Frivetlegolewis hamiltonlexusLexus ISLexus NXlicenselicense platelight metrolimousinelincolnlink roadLionel MessiLockdownlondonLos Angeles Auto Showlotuslow cost carLRTluxuryluxury carluxury carsM1m2m3macondemad maxMadagascarmaha shivaratreeMahebourgmahindramaintenancemalaysiamanManhartmansorymanual transmissionmanufacturingMapoumapsMarcelin HumbertMare d’AlbertMare-aux-VacoasMare-d’Albertmarketmarketingmartinmarutimaruti suzukiMaruti SwiftMaruti Wagon RmaseratiMatt LeBlancMauricioMauritiansmauritiusMauritius Trochetiamaybachmazdamazda 3Mazda 6Mazda BT-50Mazda CX-30Mazda MiataMazda Mx-30Mazda Mx-5Mazda RX-7mazda3McLarenMcLaren 720smecedesMELmercedesMercedes AMGMercedes E63Mercedes G-ClassMercedes G63Mercedes GLEMercedes S-ClassMercedes X-classMercedes-MaybachMESmetroMetro Expressmexican grand prixmexicoMGmichael schumachermichelinMicrosoftMidlandsminimini cooperminivanMission ImpossibleMITDmitsubishiMitsubishi DelicaMitsubishi EclipseMitsubishi EvolutionMitsubishi L200mitsubishi lancerMitsubishi MirageMitsubishi OutlanderMitsubishi PajeroMitsubishi TritonMitsubishi XpandermitsubushimitsuokaMMMmobylettesMokamonacomonaco grand prixMont-ChoisyMont-RochesMontagne-BlancheMontagne-LongueMontagne-OrymontebelloMontebello accidentMontée Smontereymoose testmoparMorcellement St AndrémorganMorneMoroccomotoMoto Guzzimoto theftmoto-écoleMotoClub Racing TeammotorMotor Racing Clubmotor showMotor Vehicle LicenceMotor vehicle test centremotorcyclemotorcyclesmotorsportmotorsportsmotosportmoviemoviesMPAmpvMRAMRCMTmugenmuscle carMusicmustangmv agustamv augustaMV TrochetiaMVDAMVLNADA Auto ShowNandanee SoornackNando BodhananonasanascarNational Coast Guardnavigationnavigation systemnavigation systemsNavin RamgoolamNCAPnceNCGNDUNepalnetherlandsnew carnew york auto shownew zealandnfsNHTSANigerianikolanissanissanNissan 370ZNissan 400Znissan altimaNissan AriyaNissan FrontierNissan GT-RNissan GT-R50Nissan JukeNissan KicksNissan LeafNissan Leaf NismoNissan MaximaNissan MicraNissan navaraNissan NoteNissan NV300Nissan PathfinderNissan PatrolNissan QashqaiNissan RogueNissan SentraNissan SkylineNissan TerraNissan TitanNissan X-trailNissan ZNissan Z ProtonorwayNouvelle-FranceNTANTCNTLANürburgringoff-roadoffroadoil spillOld Moka RoadOlympic GamesOnline Renewal of Motor Vehicle LicenceopelOpel Corsapaganipagani huayraPagani ZondaPaillesPaillotePakistanPalmarPamplemoussespanasonicpapamobileParisparis motor showparkingparliamentPebble Beachpenaltiespenaltypenalty pointsPereyberepermis de conduireperoduapetit raffrayPetit-RaffrayPetite-RivièrepetrolPetrol Retailers AssociationpeugeotPeugeot 2008peugeot 205peugeot 206Peugeot 208Peugeot 3008Peugeot 308Peugeot 5008peugeot 508PhilippinesPhoenixPhœnix.PiaggopickuppickupspininfarinapirelliPitonPlace D’ArmesPlace de l’ImmigrationPlaine MagnienPlaine VertePlaine-des-PapayesPlaine-des-RochesPlaine-LauzunPlaine-MagnienPlaine-VerteplayboyPNQPointe d’EsnyPointe-aux-PimentsPointe-aux-SablespolandpolarispolcepolestarpolicePolice de l’EnvironnementpoliticspollutionpompiersPomponettepontPont ColvillePont-BlancPont-FerpontiacPope FrancispopemobilePor Louisporscheporsche 911Porsche BoxsterPorsche CayennePorsche MacanPorsche Taycanporsche vs mclarenporsheportPort LouisPort-LouisPoste-de-FlacqPoste-LafayettePoudre d’OrPoudre-d’Or-HamletPPCPPPprankPravind JugnauthpricepricespriusproguardprotestsprotonPSApublic transportpublict transportQ3qorosQuartier MilitaireQuartier-MilitaireQuatre Bornesquatre-bornesr8RaceracingrainrallyrallyeRallye Eiffelrallye illégalrallye motoramrama valaydenrangerange roverratingsRDArecallrecallsrecordrecordsred bullred bull car park driftRed CrossreduitregistrationrenaultRenault CapturRenault ClioRenault Kwidrenault meganeRenault TwingoRenault TwizyrenderingRenewal of Motor Vehicle Licencerent a carrepairreplicaRésidence VallijeerestorationretroReunionRezvaniRHTRiambelRichard DuvalRichard HammondRiche TerreRiche-MareRiche-TerreRichelieurickshawrimacRimac C_TwoRing RoadrioRipaillesRivière du RempartRiviere-des-AnguillesRivière-du-PosteRiviere-du-RempartRiviere-NoireRiyad Owarishroadroad accidentroad accidentsroad closedroad closureroad rules & regualtionsroad rules & regulationsroad safetyRoad TaxRoad Traffic (Amendment) BillRoad Traffic ActRoad Traffic Amendment ActRoad Traffic Amendment BillRoad Traffic Billroadsroads accidentsroads safetyrobberyrobotrobotsroche-boisRoche-TerreRoches-BrunesRoches-NoiresRodrigo DuterteRodriguesrolls-roycerolls-royce cullinanrolls-royce phantomromeorond-point de Beau-BassinRose BelleRose Hillrose-belleRose-HillRoshi BhadainroverRoyal EinfieldRoyal EnfieldRoyal Enfield Continental GTRoyal Enfield HimalayanRRSRSURuben RacingRue Jemmapesrue VandermeerschrumoursRussiaRussian Grand PrixrvsaabSafe Citysafetysafety ratingsafety ratingssafety testsafety testsSaint-Pierresainte croixSainte-Croixsalesamsungsamusao paulo auto showSao Paulo Motor Showsaudisaudi arabiaSCscamscandalscaniaschool busschool vanscooterscootersSea MasterseatSeat Leonsebastian vettelSebastopolsecond hand carsecond hand carssecond hand cars importsécurité routièreself driving carself-drivingself-driving carself-driving carsSEMASEMA showsemiconductorsSeoul Motor Showservice stationservice stationsShanghaishanghai motor showShehzad SooraballyshelbyShellshowsingaporeSingapore Grand Prixsir GaëtanskodaSlovakiasmartSMFsnakeSobrinho caseSodnacsoftwareSohail Sesungkursolar energySolidarity GrantSolitudesonysorezesoreze accidentSouillacsoulsound systemssouthsouth africasouth koreaSpace XspaceXspainSpanish Grand Prixspare partsspeed cameraspeed camerasspeed limitspeedboatspeedingsportSportscarspy shotssri lankassang yongSsangYongSSCSSC TuatarassuSt-HubertSt-JeanSt-Jean roadSt-JulienSt-LouisSt-Paulst-pierreStanleystar warsstartupstation-servicestations-servicestatisticsSTCste croixSte-CroixStellantisstreet racingstrikeStudentsstudysubaruSubaru BRZSubaru ImprezaSudhir SesungkursudySunshine AutosupecarssupercarssuperyachtsuprcarssurfboardsurveySUVsuzukiSuzuki BurgmanSuzuki ErtigaSuzuki HayabusaSuzuki IgnisSuzuki IntruderSuzuki JimnySuzuki S-CrossSuzuki SwiftSuzuki Swift Sportsuzuki vitaraSuzuki Wagon RSuzuki XbeeSwedenswiftSwitzerlandTATaiwantakatatamarintankTanzaniaTarisa Resorttatatata motorstaxtax fraudtaxestaxiTBStechnlogytechnolgytechnologytenderTerre RougeTerre-RougeTerre-Rouge–VerdunteslaTesla Cybertrucktesla model 3tesla model stest drivetestsThai Motor ExpoThai Motor ShowthailandThailand International Motor ExpoThe Grand TourThe ValetheftThierry Henryticket pricetipstiresTMRSUtokyoTokyo Auto Salontokyo motor showtoptop geartotalTotal Mauritiustourismtourism authoritytoyotaToyota 86Toyota AlphardToyota AvalonToyota Aygotoyota C-HRtoyota camryToyota CenturyToyota CH-Rtoyota corollaToyota FortunerToyota GR 86Toyota GR YarisToyota HiaceToyota HighlanderToyota HiluxToyota Land CruiserToyota MiraiToyota PriusToyota ProAceToyota RAV4Toyota RushToyota Siennatoyota supraToyota TacomaToyota TJ CruiserToyota TundraToyota Venzatoyota yaristoystoytatractortrafficTraffic Branchtraffic jamtrailerTranquebartransformersTransinvesttransporttransport policeTravaux routierstrendsTrianontricksTriolettriumphTrois-Boutiquestrou aux bichesTrou d’Eau DouceTrou-aux-BichesTrou-d'Eau-DouceTrou-d’Eau-DouceTrou-Fanfarontrucktruckstsunamitug of wartuningtuniningTurfTurkeytvsTyacktyresUAEuberUBIWUBSukukraineunionsUnited StatesuomuralUrban TerminalUSUSAused carused car importused carsvacanciesvaccinationVacoasVacoas-PhoenixvalettaVallée des PrêtresVallée-des-PrêtresVallee-PitotValtonvanvarma caseVeer Luchoomunvehicle inspectionVehiclesvelostervenezuelaVenusVerdunVictoria Bus StationVictoria stationVictoria Urban TerminalvideoVienna Auto ShowvietnamVillebagueVintagevintage carvintage carsVipervivo energyVivo Energy MauritiusVoitures électriquesvoitures reconditionnéesvolvolkswagenVolkswagen AmarokVolkswagen BeetleVolkswagen GolfVolkswagen ID.3Volkswagen ID.4Volkswagen MultivanVolkswagen PoloVolkswagen Tiguanvolvovwvw beetleVW Buggyvw golfVW ID.3VW JettaVW passatvw polovw t-crossWakashioWAPwaymoWeatherwheelsWolmarWootonWork Access PermitWorldXiaomiyachtyachtsyamahaYamaha MT-07yarisYogida SawmynadenzagatoZeekr
Sell Your Car