Imvelaphi yeprojekthi yelithium ion yebhetri

  Lithium-ion battery is an indispensable energy storage product that drives human modern life, Lithium ion batteries are indispensable for daily communication, energy storage, household appliances, electric vehicles, electric ships, etc. And in special applications such as military, deep sea, and mining, lithium-ion batteries are characterized by their high energy density, long service life, and superior safety performance, Widely replaced the traditional lead-acid batteries, nickel-metal hydride batteries and other previous generation products.

Iibhetri zeLithium-ion lushishino olusebenzisa itekhnoloji ngamandla，Uphuhliso lweli shishini lunokuqhuba ngenkuthalo uphuhliso lokwenziwa kwezixhobo zelizwe kunye nemizi-mveliso yemathiriyeli. Itekhnoloji ye-membrane ephucukileyo, itekhnoloji yomgca wokudityaniswa okuzenzekelayo, indawo ephantsi yombethe kunye netekhnoloji ephezulu yomoya ococekileyo kunye nezixhobo ezihambelanayo ezisetyenziswa kwinkqubo engundoqo yokwenziwa kwebhetri ye-lithium ion, Inesikhokelo esilungileyo kunye nendima yokubonisa kuphuhliso lobunye ubugcisa bemizi-mveliso kunye nezixhobo. Izinto ezisetyenziswa kwiibhetri ze-lithium-ion zinokudibaniswa nentsimbi yendawo yobhedu, i-cobalt ore kunye ne-graphite ore ukuze kuqhutywe ubunzulu kwi-ultra-thin copper foil kwiibhetri ze-lithium-ion, i-lithium cobaltate (i-lithium nickel cobalt manganate) izixhobo ze-cathode, kunye ne-high-- izixhobo ze-graphite anode zamandla.

Nangona iibhetri ze-lithium-ion okwangoku zilolona hlobo ludumileyo lwebhetri, kunye nophuhliso lwetekhnoloji, kukho iintlobo ezininzi zeebhetri ze-lithium-ion, nganye ineenzuzo zayo kunye nokungalunganga. Nangona kunjalo, ngokubanzi, iibhetri ze-lithium-ion zineenzuzo ezilandelayo kunye nokungalunganga:

1. Izinto eziluncedo kwiibhetri ze-lithium-ion.

(1) I-voltage ephezulu: I-voltage esebenzayo yebhetri enye inokufikelela phezulu njenge-3.7-3.8V (i-voltage ephezulu yeeseli inokuhlawulwa ukuya kwi-4.2V), ephindwe kathathu i-Ni Cd kunye ne-Ni-H ibhetri.

(2) Amandla athile aphezulu: Okwangoku, amandla okwenene anokufezekiswa malunga ne-555Wh / kg, oku kuthetha ukuba izinto eziphathekayo zinokufikelela kumthamo othile ongaphezu kwe-150mAh / g (i-3-4 amaxesha e-Ni Cd, i-2-3 amaxesha Ni MH), ekufutshane malunga ne-88% yexabiso layo lethiyori.

(3) Ubomi bomjikelo omde: ngokuqhelekileyo unokufikelela amaxesha angaphezu kwama-500, okanye nangaphezu kwamaxesha e-1000, kwaye i-lithium iron phosphate inokufikelela ngaphezu kwamaxesha angama-2000. Ubomi beebhetri kwizixhobo ezikhutshwayo ezisezantsi ziya kuphinda kabini ukukhuphisana kwazo.

(4) Ukusebenza kakuhle kokhuseleko: ukungcola, akukho mpembelelo yememori. Njengomphambili we-Li-ion, iibhetri ze-lithium-ion ziye zanciphisa indawo yazo yesicelo ngenxa yokubunjwa kwee-dendrites kunye neesekethe ezimfutshane ezibangelwa yi-metallic lithium. I-Li-ion ayinazo izinto ezingcolisa imo engqongileyo ezifana necadmium, ilothe, kunye nemercury. Ingxaki enkulu kwezinye iibhetri zeNi Cd kwiinkqubo ezithile (ezifana ne-sintering) yi "memory effect", ethintela kakhulu ukusetyenziswa kweebhetri. Nangona kunjalo, i-Li-ion ayinayo le ngxaki konke konke.

(5) Ukuzikhupha okuphantsi: Umlinganiselo wokuzikhupha we-Li ion, ohlawuliswa ngokupheleleyo kwiqondo lokushisa kunye nokugcinwa kwinyanga enye, malunga ne-2%, ephantsi kakhulu kune-25-30% ye-Ni Cd kunye ne-30-35% ye-Ni kunye ne-MH.

(6) Ukutshaja ngokukhawuleza kunye nokukhupha: Umthamo unokufikelela ngaphezu kwe-80% yomthamo we-nominal emva kwemizuzu engama-30 yokutshaja, kwaye ngoku iibhetri zentsimbi ye-phosphate zinokufikelela kwi-90% yomthamo oqhelekileyo emva kwemizuzu eyi-10 yokutshaja.

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2. Ukungalungi kweebhetri ze-lithium-ion

(1) Ukuguga: Ngokungafaniyo nezinye iibhetri ezitshajwayo, umthamo weebhetri ze-lithium-ion uya kuncipha ngokukhawuleza, ngokuzimeleyo kwinani lokusetyenziswa, kodwa uhambelana nobushushu. Indlela enokwenzeka kukuba ukuchasana kwangaphakathi kwanda ngokuthe ngcembe, ngoko kunokwenzeka ukuba kubonakaliswe kwiimveliso ze-elektroniki ezinemisinga ephezulu yokusebenza. Ukutshintsha igraphite nge-lithium titanate kubonakala kwandisa ubomi.

(2) Ukungakwazi ukuthwala i-overcharging: Ngexesha lokutshaja, i-lithium ion efakwe ngokugqithisileyo iya kulungiswa ngokusisigxina kwi-lattice kwaye ayikwazi ukukhutshwa, nto leyo inokukhokelela kubomi obufutshane bebhetri kunye nokuveliswa kwegesi okubangela iibhubhu zegesi.

(3) Ukungakwazi ukumelana nokukhutshwa: Ngexesha lokukhupha, i-lithium ion egqithisileyo isuswe kwi-electrode, enokubangela ukuwa kwe-lattice, ukunciphisa ixesha lokuphila, kwaye kubangele ukuveliswa kwegesi, okubangelwa yi-bubbles yegesi.

(4) Iindlela ezininzi zokukhusela ziyafuneka: Ngenxa yokuba ukusetyenziswa okungalunganga kunokunciphisa ixesha lokuphila kwaye kuze kuholele ekuqhumeni, iindlela ezininzi zokukhusela ziye zongezwa ekuyilweni kweebhetri ze-lithium-ion.

Ukhuseleko lwesekethe: thintela ukutshaja, ukukhupha ngaphezulu, ukugcwala, kunye nobushushu.

Exhaust port: Ukuthintela uxinzelelo olugqithisileyo ngaphakathi kwebhetri.

Iimpawu ze-diaphragm: Inokumelana okuphezulu kwe-puncture ukukhusela imijikelezo emfutshane yangaphakathi; Xa ukushisa kwangaphakathi kwebhetri kuphezulu kakhulu, kusenokunyibilika, kuthintele i-lithium ion ukuba idlule, ithintele ukuphendula kwebhetri, kunye nokwandisa ukumelana kwangaphakathi (ukuya kwi-2kQ).

Isishwankathelo, uphuhliso loshishino lwebhetri ye-lithium-ion lushishino olunamandla olukhuthaza amazwe asakhulayo kumazwe aphuhliswe kakhulu.