ndabere oru ngo batrị lithium ion

  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.

Batrị lithium-ion bụ ụlọ ọrụ na-arụ ọrụ teknụzụ, mmepe nke ụlọ ọrụ a nwekwara ike na-arụsi ọrụ ike na mmepe nke nrụpụta akụrụngwa nke obodo na ụlọ ọrụ akụrụngwa. Teknụzụ akpụkpọ anụ dị elu, teknụzụ ahịrị mgbakọ akpaka, obere igirigi na teknụzụ ikuku ikuku dị ọcha na akụrụngwa kwekọrọ na-eji na isi usoro nke nrụpụta batrị lithium ion, ọ nwere ezigbo nduzi na ọrụ ngosi maka mmepe nke teknụzụ ụlọ ọrụ na akụrụngwa ndị ọzọ. Enwere ike ijikọ ihe ndị a na-eji na batrị lithium-ion na ọla kọpa mpaghara, cobalt ore na graphite ore maka nhazi miri emi n'ime ọla kọpa dị nro maka batrị lithium-ion, lithium cobaltate (lithium nickel cobalt manganate) cathode ihe, na elu- ike graphite anode ihe.

Ọ bụ ezie na batrị lithium-ion bụ batrị kacha ewu ewu ugbu a, site na mmepe teknụzụ, enwere ọtụtụ ụdị batrị lithium-ion, nke ọ bụla nwere uru na ọghọm ya. Agbanyeghị, n'ozuzu, batrị lithium-ion nwere uru na ọghọm ndị a na-ahụkarị:

1. Uru nke batrị lithium-ion.

(1) Voltage dị elu: voltaji na-arụ ọrụ nke otu batrị nwere ike iru elu dị ka 3.7-3.8V (enwere ike ịgbanye voltaji cell kachasị elu ruo 4.2V), nke bụ okpukpu atọ karịa batrị Ni Cd na Ni-H.

(2) Ike dị elu dị elu: Ugbu a, ike a kapịrị ọnụ nke enwere ike nweta bụ ihe dị ka 555Wh / kg, nke pụtara na ihe ahụ nwere ike iru ikike karịa 150mAh / g (3-4 ugboro Ni Cd, 2-3). times Ni MH), nke dị nso ihe dịka 88% nke uru usoro iwu ya.

(3) Ogologo okirikiri ndụ: n'ozuzu nwere ike iru ihe karịrị ugboro 500, ma ọ bụ ọbụna karịa 1000 ugboro, na lithium iron phosphate nwere ike iru ihe karịrị 2000 ugboro. Ogologo ndụ batrị ndị dị n'ime ngwa ndị dị ugbu a dị ala ga-agbakọ asọmpi ha okpukpu abụọ.

(4) Ọrụ nchekwa dị mma: enweghị mmetọ, enweghị mmetụta nchekwa. Dị ka onye bu ụzọ Li-ion, batrị lithium-ion ebelatala mpaghara ngwa ha n'ihi nhazi dendrites na obere sekit nke lithium dara mere. Li-ion enweghị ihe ndị na-emetọ gburugburu ebe obibi dịka cadmium, lead, na mercury. Nnukwu ihe ndọghachi azụ nke ụfọdụ batrị Ni Cd na usoro ụfọdụ (dịka sintering) bụ "mmetụta ebe nchekwa", nke na-amachibido ojiji batrị. Otú ọ dị, Li-ion enweghị nsogbu a ma ọlị.

(5) Mwepu onwe ya dị ala: Ọnụego mwepu nke Li ion nke onwe, nke a na-ana ya n'ụzọ zuru ezu na ụlọ okpomọkụ ma chekwaa ya otu ọnwa, bụ ihe dịka 2%, dị ala karịa 25-30% nke Ni Cd na 30-35% nke Ni na MH.

(6) Nchaji ngwa ngwa na ịchaji: Ikike nwere ike iru ihe karịrị 80% nke ikike aha mgbe nkeji 30 gachara, ma ugbu a batrị ígwè phosphate nwere ike iru 90% nke ikike aha mgbe nkeji 10 gachara.

(7) Ọnọdụ okpomọkụ dị elu na-arụ ọrụ: okpomọkụ na-arụ ọrụ bụ -25 ~ 55 Celsius C. Site na nkwalite nke electrolyte na electrode dị mma, a na-atụ anya ka ọ gbasaa ruo -40 ~ 70 Celsius.

2. Ọdịmma nke batrị lithium-ion

(1) Ịka nká: N'adịghị ka batrị ndị ọzọ nwere ike ịchaji, ikike nke batrị lithium-ion ga-eji nwayọọ nwayọọ daa, na-adabereghị na ọnụọgụ ojiji, mana metụtara okpomọkụ. Usoro nwere ike ime bụ na nkwụsị nke ime n'ime ya ji nwayọọ nwayọọ na-abawanye, n'ihi ya, ọ ga-abụ na ọ ga-egosipụta na ngwaahịa eletrọnịkị na-arụ ọrụ dị elu. Dochie graphite na lithium titanate yiri ka ọ na-agbatị ndụ.

(2) Enweghị ike iburu n'ebufe ibu: Mgbe ị na-ebufe oke, ion lithium agbakwunyere ga-adịgide adịgide na lattice na enweghị ike ịhapụ ya, nke nwere ike iduga ndụ batrị dị mkpụmkpụ na mmepụta gas na-eme ka afụ gas.

(3) Enweghị ike iguzogide ntupu: N'oge a na-agbapụta ya, a na-ewepụ ion lithium gabigara ókè na electrode, nke nwere ike ime ka lattice daa, mee ka ndụ dị mkpụmkpụ, ma mee ka mmepụta gas pụta, na-ebute afụ gas.

(4) A na-achọ ọtụtụ usoro nchebe: N'ihi na iji na-ezighị ezi nwere ike ibelata ndụ ndụ na ọbụna na-eduga na mgbawa, ọtụtụ usoro nchebe agbakwunyere na nhazi nke batrị lithium-ion.

Sekit nchekwa: gbochie ịchaji n'ofe, nfefe, oke ibu, na ikpo oke ọkụ.

Ọdụ ụgbọ mmiri ikpochapụ: ka igbochi oke nrụgide n'ime batrị.

Njirimara diaphragm: O nwere nguzogide ntupu dị elu iji gbochie obere sekit dị n'ime; Mgbe okpomọkụ dị n'ime batrị ahụ dị oke elu, ọ ka nwere ike gbazee, gbochie ion lithium ka ọ gafere, gbochie mmeghachi omume batrị, ma na-abawanye nkwụsị nke ime (ruo 2kQ).

Na nchịkọta, mmepe nke ụlọ ọrụ batrị lithium-ion bụ ụlọ ọrụ siri ike na-akwalite mba ndị na-emepe emepe na mba ndị mepere emepe.