Fast Charging hmanga tih theih a ni.
Battery-a chemical reaction tlan chak ber tur chuan an charge kimchang an thlen theih nan hun a ti tawi a, positive leh negative plate te polarization tih tlem emaw tihtlem emaw a ni a, chu chuan battery efficiency a ti tha a, tun hnaiah charging technology chak tak a lo thang chak hle a ni. Fast charging method hman tlanglawn engemaw zat chu a hnuaiah hian tarlan a ni. Heng methods te hi optimal charging curve vel a design a ni a, actual charging curve chu optimal charging curve hnaih thei ang bera siam a tum a ni.
Pulse charge dan tur .
Pulse charging method hian battery chu pulse current hmangin a charge hmasa a, chutah chuan hun engemaw chen charge a titawp a, chutah chuan pulse current hmangin battery chu a charge leh a, he cycle hi a ti leh a, Figure 11-5-ah hian a lang leh a ni. Charging pulse hian battery chu a charge kim vek a, a inkar chuan chemical reaction atanga oxygen leh hydrogen lo chhuak chu recombine leh absorb a nih theih nan hun a phalsak a, chu chuan concentration polarization leh ohmic polarization a ti bo vek a ni. Hei hian battery chhunga pressure a tihniam a, constant current charging round dang chu a kal awlsam zawk a, battery chu charge tam zawk a absorb thei bawk. Intermittent pulses hian battery chu reaction time tling tak a pe a, gas evolution a tihtlem bakah battery charging current acceptance rate a ti sang bawk.
Pulse charging hian battery charging leh discharging efficiency a ti tha thei a, charging hun a humhim thei a, battery life pawh a ti rei thei a, mahse condition thenkhat chu a tawk tur a ni.
Lithium-ion battery te hian charging leh discharging laiin cathode, anode, leh electrolyte-a lithium ion reciprocating movement-ah an innghat ber avangin, ion movement rate leh diffusion coefficient tihpun hi charging hun humhim leh charging efficiency tihchangtlun tumna neih theihna tur a ni. Charging rate emaw distribution dik lo chuan thil tum duh chu a tihlawhtling lo mai ni lovin battery aging a ti chak bawk ang. Figure 11-2-a kan hmuh angin, charging rate a san chuan chargeable capacity a tlem zawk a ni.
Electrochemical characteristic analysis atanga a lan dan chuan lithium-ion battery charging rate hi lithium ion diffusion rate leh positive leh negative electrode materials te characteristics avang hian a tlem ber a ni. Equation (11-3) hmangin lithium-ion diffusion equation siam theih a ni.
Formula-ah chuan CL hian lithium-ion concentration a entir a; X hian diffusion distance a entir a; t hian diffusion time a entir a; leh DLI hian lithium{{1}ION diffusion coefficient a entir a ni.
Zirchianna atanga a lan dan chuan lithium-ion battery te hian cycle test laiin rapid aging period pahnih an lantir a:
1) SEI film siam hun chhung (solid electrolyte interphase), chu chu lithium ion awmsa a\\anga a \\hen hmanga electrode chunglama SEI film siam a ni.
2) Charging cycle tin tawp lamah chuan battery chhunga liquid phase-a lithium ion-te inthlak danglamna do theihna chu a tlem hle a, solid phase-a diffusion coefficient erawh a tlem hle thung. Chuvangin, charging current chu charging cycle tawp lamah a lian lutuk a nih chuan lithium ion tam tak chuan electrode surface-ah a innghat ang a, chu chuan awlsam takin lithium metal siamnaah a hruai thei ang a, lithium ion awm zat pawh a tihtlem thei ang.
SEI film siam hian battery life-ah nghawng lian tak a nei a ni. SEI film tha tak siam theih loh a nih chuan, battery hian charge/discharge efficiency sang tak leh initial charge/discharge stage-ah hman theih capacity a nei thei a, mahse, cycle count sang zel nen a capacity chu nasa takin a tlahniam ang a, a bik takin low-tuna pulse charging modes-ah chuan. Chuvangin, stage hmasa berah chuan lithium-ion hloh chu pumpelh theih a ni lo. Mahse, pulse charging lai hian current a sang lutuk tur a ni lo. Current tam lutuk chuan SEI film siam dan inang lo tak tak a thlen ang a, SEI film thickening chak tak a thlen ang a, resistance nasa takin a pung ang a, ion hman theih zat a tihtlem bakah capacity hloh a thlen ang.
Pulse charging hian a bik takin charging pauses emaw reverse discharge emaw hmangin charging process laiin polarization a ti bo thin. Polarization hi battery chi hrang hrang, siam dan leh material property te nen a inzawm tlat a, a danglamna pawh a buaithlak hle. Battery technology lama hmasawnna chhunzawm zel a nih avangin polarization pawh a tha hle. Chuvangin, conventional pulse charging modes thatna chu a langsar lo hle. Battery characteristic parameters relevant tak tak te chu real-time monitoring leh pulse charging amplitude leh cycle te chu a remchan dan angin a awm a ngai a, chu chuan battery chu optimal operating condition ah a awm theih nan a siam a ngai a ni-The intelligent charging mode a hnuaia tarlan ang hian.
ReflexTM Fast Charging hmanga tih theih a ni.
ReflexTM Fast Charging Method hi United States-a patented technology a ni a, a tir lamah chuan nickel-cadmium battery charging atana siam a ni ber. He charging method hian nickel-cadmium battery-a memory effect problem chu a tiziaawm a, chu chuan fast charging time chu nasa takin a ti tlem a ni. Pulse charging method nena khaikhin chuan ReflexTM fast charging method-a thil langsar ber chu negative pulse dah belh a ni. A mechanism hian negative pulse-in "barrier" effect a pek chu a hmang a, chu chuan reaction process laiin electrode surface-a bubble siam chhuah chu a ti bo a, battery charging-a internal resistance-a temperature sang leh sang a tihtlem phah a ni. Hei hian electrical energy chu a theih ang anga battery chhunga chemical energy-ah a chantir thei a, chu chuan slow diffusion avanga concentration polarization awm lohna turin a pui a, battery chhunga active materials hman zat a ti sang a, chu chuan charge-discharge cycle a tipung bawk.
Figure 11-6-a kan hmuh angin ReflexTM Fast Charging method-a working cycle pakhat hian stage pathum a huam a, chungte chu forward charging pulse, reverse instantaneous discharge pulse, leh maintenance atana charging-a chawlh hahdam te a ni. Forward charging pulse hnathawh chu battery charge theihna tur positive amplitude pulse current pek a ni a; Reverse instantaneous discharge pulse hnathawh chu electrolyte ion te chu battery chhunga polarization reaction tikhawtlai turin a diffuse a, chu chuan charging efficiency a ti tha a, battery life a tisang a Stop charging phase hnathawh chu electrolyte ion te chu a inthlau zawk a, polarization phenomenon chu a tihziaawm a, chu chuan charging efficiency a ti tha a, battery life a ti rei zawk a ni.
Variable current intermittent charging method .
Variable current intermittent charging method chu constant current charging leh pulse charging hmanga siam a ni a, Figure 11-7-a kan hmuh ang hian. A nihna chu constant current charging section chu voltage-limited variable current intermittent charging section hmanga thlak a ni. Charging hmasa berah chuan charging current sang zawk neih theihna tur leh charging amount tam zawk hmuh theihna turin variable current intermittent charging method hman a ni.
A hnu lama charging-naah chuan overcharge hmuh theih nan leh battery chu fully charged state-a dah leh turin constant voltage charging phase hman a ni. Charging chu a hun taka tihtawp a nih chuan, battery-a chemical reaction-in oxygen leh hydrogen a siam chu a insiam thar leh theih nan leh a insiamrem theihna hun a nei a, chu chuan concentration polarization leh ohmic polarization a ti bo a ni. Hei hian battery chhunga pressure a tihniam a, constant current charging round dang chu a kal awlsam zawk a, battery chu electric tam zawk a la lut thei bawk.
Variable current intermittent charging method hmangin, Figure 11-8-a kan hmuh ang hian variable voltage intermittent charging method an rawt a ni. Variable voltage leh variable current intermittent charging methods inthlauhna chu stage hmasa ber chu intermittent constant current ni lovin, intermittent constant voltage a ni zawk.
Figure 11-7 leh 11-8 te khaikhin chuan Figure 11-8 hian optimal charging curve a lantir tha zawk tih a hriat theih. Constant voltage charging stage tinah hian constant voltage charging avang hian charging current chu a pianphungah exponential-in a tlahniam a, chu chu charging process chhunga battery current pawm theih chu zawi zawiin a tlahniam tih characteristic nen a inmil a ni.
Variable voltage, variable current wave-Type intermittent positive leh negative zero-pulse fast charging method
Pulse charging, reflexTM fast charging, variable current intermittent charging, leh variable voltage intermittent charging, variable voltage, variable current wave-type positive leh negative zero-pulse intermittent fast charging method siam leh hman a ni. Pulse charging circuit control hi a tlangpuiin chi hnih ah a tel a:
1) Pulse current amplitude chu a danglam thei a, PWM (Power PWM) signal frequency erawh a fixed thung.
2) Pulse current amplitude chu a awm reng a, PWM signal frequency erawh a inthlak thei thung.
Figure 11-9 hian heng pahnih atanga danglam control mode a hmang a: pulse current amplitude leh PWM signal frequency te chu fixed a ni a, PWM duty cycle erawh chu adjustable a ni thung. Intermittent charging/stopping phase dah belh a nih chuan hun rei lote chhungin charge tam zawk hmuh theih a ni a, battery-a charging acceptance capability tihchangtlun a ni.
Charging mode tin hian a thatna leh application scope a nei vek a. Mahse, electric lirthei hman tam tak avangin charging speed mamawhna a sang chho zel a, hei vang hian smart charging a lo chhuak ta a ni. Smart charging hian a bul berah chuan battery charge kim emaw, hun rei lote chhunga set capacity thlen emaw a tum ber a ni. Hei hi battery’s state of charge (SOC) leh State of Health (SOH) angin current value chu siamrem a ni a, charging hun chu traditional vehicle refue-na nen tehkhin theih a ni.
Smart charging hian ngaihven a hlawh hle. Khawvel puma zirchiangtute chuan charging rates tihchangtlunna tur charging control strategies zirchiannaah resources pawimawh tak tak an dah a, chutih rualin battery lifespan chu a tha thei ang bera enkawl an tum bawk. Hei hian a lehlamah electric lirthei hman tangkai leh khawtlang pawm theihna a tipung a ni.
