NEWS

new energy vehicles

Newenergyvehiclesincludepureelectricvehicles,extended-rangeelectricvehicles,hybridvehicles,fuelcellelectricvehicles,hydrogenenginevehicles,andothernewenergyvehicles.PureelectriccarBladeElectricVehicles(BEV)isakindofvehiclethatusesasinglebatteryastheenergystoragepowersource.Itusesthebatteryastheenergystoragepowersourcetosupplyelectricenergytothemotorthroughthebatterytodrivethemotortorun,thusdrivingthecar.hybridcarHybridElectricVehicle(HEV)referstoavehiclewhosedrivesystemiscomposedoftwoormoresingledrivetrainsthatcanrunatthesametime.Thedrivingpowerofthevehicleisdeterminedbythesingledrivesystemaloneormultipledependingontheactualrunningstateofthevehicle.Thedrivesystemisprovidedtogether.Hybridvehiclescomeinmanyformsdependingonthecomponents,layout,andcontrolstrategy.FuelcellelectriccarFuelCellElectricVehicle(FCEV)useshydrogenandoxygenintheairundertheactionofacatalyst.Anelectricvehiclethatisdrivenbyanelectrochemicalreactioninafuelcellasamainpowersource.Fuelcellelectricvehiclesareessentiallyonetypeofpureelectricvehicles.Themaindifferenceisthattheworkingprincipleofpowerbatteriesisdifferent.Ingeneral,fuelcellsconvertchemicalenergyintoelectricalenergythroughelectrochemicalreactions.Hydrogenisrequiredforelectrochemicalreactions,andoxygenisusedforoxidants.Therefore,mostofthefuelcellelectricvehiclesdevelopedattheearliestusehydrogenfueldirectly.Thehydrogencanbestoredintheformofliquefiedhydrogen,compressedhydrogenormetalhydridehydrogenstorage.HydrogenenginecarAhydrogenenginecarisacarpoweredbyahydrogenengine.Thefuelusedingeneralenginesisdieselorgasoline,andthefuelusedinhydrogenenginesisgaseoushydrogen.Hydrogenenginecarisakindofvehiclethatrealizeszeroemission.Itemitspurewater,whichhastheadvantagesofnopollution,zeroemissionandabundantreserves.OthernewenergyvehiclesOthernewenergyvehiclesincludecarsthatusehigh-capacityenergystoragedevicessuchassupercapacitorsandflywheels.Atpresent,inChina,newenergyvehiclesmainlyrefertopureelectricvehicles,extended-rangeelectricvehicles,plug-inhybridvehiclesandfuelcellelectricvehicles.Conventionalhybridvehiclesareclassifiedasenergy-savingvehicles.

Thoughts on developing new energy and materials

Hydrogenenergyisoneoftheinternationallyrecognizednext-generationenergysources.Asweallknow,energy,asoneofthepillarsofsocialdevelopment,hasitsnecessityandimportance.Thenthenewenergymustmeettwoconditions.Theenergydensityofthenewenergyishigherthantheexistingenergydensity,anditcanreplacetheexistingenergy.Thesecondisenvironmentallyfriendly.Hydrogenenergyhassuchacharacteristic,sofromtheenergypointofview,itisfullycharacterizedbythenextgenerationofnewenergy.Therefore,theconstructionofahydrogenenergysocietyhasbecomeaconsensusintheinternationalcommunity. Inthepast,wetalkedaboutthehydrogenenergysociety.Wefeelthatwearefarawayfromus.Infact,thehydrogenenergysocietyisveryclosetous,eveninfrontofus.Thetimetablefortheexitoffuelvehiclesinvariouscountrieshasbeenannounced.Atthelatestin2040,theUKwillwithdrawfromfuelvehicles,andsomeothercountrieswillwithdrawearlier.Inthissense,whatisthenextgenerationofcars?Majorautocompanieshavelaunchedthenextgenerationofthemainmodels,whicharefuelcellsandhydrogen-poweredvehicles.Lastyear,PremierLiKeqiangalsowenttoseesuchacar.Themaincoretechnologyofhydrogenvehiclesishydrogenfuelcells.Sowhereishydrogen?Theteacherswhoworkinengineeringknowthathydrogenisdifficulttostorebecauseithasthesmallestmoleculesandhydrogenembrittlementproblems.Nowthatcarbonfiberbottleshavecompletelysolvedtheproblemofhydrogenembrittlement,itssafetyisnowbeyonddoubt.Atpresent,ourcountrypaysenoughattentiontohydrogenenergyandhydrogenfuelcells.BeforetheSpringFestivalin2018,thestateestablishedtheInnovationAllianceforHydrogenandHydrogenFuelCellIndustry.IamfortunatetobeamemberoftheStrategicSteeringCommittee.Hydrogenenergyasanationalemergingstrategicindustryshouldoccupyaveryimportantpositioninthenext“14thFive-YearPlan”,soIhopethatourschoolshouldpayenoughattention.

How much is the cleaning and maintenance of rooftop photovoltaic power plants?

Photovoltaic power plants are polluted by dust, affecting not only the amount of electricity generated, but also the life of photovoltaic power plants. If the dust on the components is cleaned in time, the benefits of the power station can be greatly improved.