Ɔberɛfɛw da 22, afe 2023
Ɔhyew ka adeyɛ biara a ɛwɔ batere mu — efi electrochemical reaction rate so kosi electrolyte viscosity so kosi SEI film stability so. Ɔhyew nkɛntɛnso ntease yɛ ade a ɛsɛ sɛ wodi kan yɛ ansa na wɔatumi asɔ batere ahwɛ na wɔasiesie no yiye. Saa asɛm yi kyerɛkyerɛ nea enti a ɛfata sɛ wɔde adwene si ɔhyew so te sɛ voltage no mu.
Ɔhyew nya batere no adwumayɛ so nkɛntɛnso kɛse. Ɛkame ayɛ sɛ emu adeyɛ biara — electrochemical reaction rate, electrolyte viscosity, SEI film stability — yɛ ɔhyew-a wɔhwɛ so. Saa nsunsuanso ahorow yi ntease ne ade a ɛsɛ sɛ wodi kan yɛ ansa na wɔasɔ batere ahwɛ yiye na wɔasiesie.
Wɔ ɔhyew a ɛba fam (a ɛba fam sen 0°C) mu no, tumi a wotumi de di dwuma no so tew kɛse. Wɔ lead-acid batere ho no, wɔ 0°C mu no, tumi a wotumi de di dwuma no bɛyɛ 75% wɔ nea wɔahyɛ no mu; wɔ -10°C, bɛyɛ 50%; wɔ -20°C, ebia 30% pɛ. Eyi nyɛ ɔsɛe a ɛtra hɔ daa — ɔhyew a ɛba fam ma electrolyte ionic conductivity so tew, ɛma reaction kinetics brɛ ase, na ɛma polarization kɔ soro, na ɛtew tumi a ɛwɔ hɔ so bere tiaa bi. Tumi no san ba bere a ɔhyew kɔ soro no. Nanso, anyinam ahoɔden a ɛkɔ soro wɔ ɔhyew a ɛba fam mu no betumi ama ahoɔden no akɔ fam ntɛmntɛm na ama mfiri no agyae, ɛwom mpo sɛ tumi a aka no da so ara wɔ hɔ de.
Wɔ ɔhyew a ɛkɔ soro (boro 30°C) mu no, tumi a wotumi de di dwuma no kɔ soro bere tiaa bi (bɛyɛ 10% wɔ 10°C a ɛkɔ soro biara mu ma kɔbere-acid), nanso ɛka a wɔbɔ ne nkwa a ɛsɛe ntɛmntɛm. Lead-acid float nkwa nna wɔ 25°C yɛ bɛyɛ mfeɛ 5-8; 10°C biara a ɛkɔ soro no bɛyɛ sɛ ɛyɛ nkwa a aka no fã — wɔ 35°C mu no, ebia mfe 2-4 pɛ na aka. Eyi te saa efisɛ ɔhyew a ɛkɔ soro ma grid no nsɛe ne electrolyte nsu a wɔde di dwuma ntɛmntɛm. Lithium-ion batere no yɛ nea ɛyɛ mmerɛw saa ara — ɔhyew a ɛkɔ soro ma SEI film porɔw ne electrolyte oxidation yɛ ntɛmntɛm, na ɛma tumi a ɛyɛ ntɛmntɛm no yera na emu ahoɔden a ɛko tia no kɔ soro ntɛmntɛm.
Enti, mfaso a ɛwɔ ɔhyew a wɔhwɛ so wɔ batere sɔhwɛ mu ne sɛ: sɔhwɛ mu aba a wɔfa wɔ ɔhyew ahorow mu no nyɛ nea wɔde toto ho. Sɛ wɔankyerɛw ɔhyew a atwa yɛn ho ahyia bere a wɔreyɛ sɔhwɛ no a, nhwehwɛmu a edi hɔ no ntumi nhu sɛ ebia nsakrae a ɛba wɔ ahoɔden a ɛko tia no mu no da onyin adi anaasɛ ɔhyew mu nsakrae ara kwa. Sɛ nhwɛso no, ebia ahoɔden a wɔsusuw wɔ awɔw bere mu no bɛyɛ kɛse asen ahohuru bere a ɛnyɛ sɛ batere no abɔ akyɛ nti, na mmom esiane sɛ na awɔw wom nti.
Ɔhyew a wɔde tua ho ka yɛ mfiridwuma titiriw a wɔde sɔ batere hwɛ. Ne botae ne sɛ ebeyi ɔhyew mu nkɛntɛnso afi hɔ sɛnea ɛbɛyɛ a wobetumi de nsɛm a wɔsusuw wɔ mmere ahorow mu atoto ho. Nnyinasosɛm no: fa 25°C di dwuma sɛ ɔhyew a wɔde kyerɛ, na teɛ nea efi mu ba a egyina nea ɛtwe ne ho fi nea wɔde gyina so no so.
Wɔ emu ahoɔden sɔhwɛ mu no, ɔkwan a wɔtaa fa so tua ka ne: 10°C biara a ɛtwe ne ho fi nhwɛsode ho no siesie akenkan no bɛyɛ 30% ma lead-acid batere anaa 15% ma lithium-ion. Sɛ nhwɛsoɔ no, emu ahoɔden a wɔsusuu wɔ 10°C sɛ 50 mΩ no teɛteɛ kɔ bɛyɛ 35 mΩ wɔ 25°C nkyerɛkyerɛmu no so. Eyi ma wotumi de awɔw bere ne ahohuru bere mu akenkan toto ho tẽẽ.
Wɔ voltage sɔhwɛ mu no, ɔhyew akatua ho hia saa ara. Battery open-circuit voltage nso gu ahorow sɛnea ɔhyew te — bɛyɛ 3mV wɔ 1°C biara mu ma lead-acid. Sɛ wɔantua ka a, 12.6V a wɔsusuu wɔ 5°C ne 12.6V a wɔsusu wɔ 35°C no betumi ne SOC gyinapɛn a ɛsono bɛboro 10% no ahyia.
PK59B no ka ho ne ɔhyew akatua a wɔasisi mu a ɛwɔ ɔhyew sensor a ɛyɛ gyinapɛn a wɔde susuw batere no ani bere koro mu ne ɔhyew a atwa ho ahyia. Tester no ankasa teɛteɛ akenkan denam preset compensation curve — nsaano akontaabu biara ho nhia. Wɔ nneyɛe mu no, eyi brɛ ɔyare a wohu a ɛnteɛ a ɔhyew a ɛsakra de ba no ase kɛse.
Wɔ batere no huammɔdi mu no, ɔhyew a ɛnteɛ taa ba ansa na emu ahoɔden a ɛko tia no akɔ soro anaasɛ ne tumi so atew wɔ ɔkwan a wotumi hu so. Sɛ wohu ɔhyew a ɛnteɛ ntɛm a, ebetumi asiw nneɛma pii a wɔhwere ano.
Ɔhyew a ɛnteɛ a ɛtaa ba no bi ne: nkwammoaa biako a ɛwɔ ahama mu a ɛyɛ hyew kɛse sen afoforo bere a wɔrebɔ charge (a ɛkyerɛ sɛ sulfation tiawa anaasɛ emu yɛ den wɔ mu); ahama no nyinaa a ɛretu mmirika kɔ so yɛ hyew bere a float charge (a ɛkyerɛ sɛ wɔde float voltage ahyɛ soro dodo); ɔhyew a ɛsan ba brɛoo bere a wɔayi afi mu akyi (a ɛkyerɛ sɛ emu siw ano dodo). Sɛ wotumi kyere saa ɔhyew anomalies yi ntɛm a, wobetumi ayɛ nteɛso ansa na asiane kɛse adi nkogu — ɔhyew guan anaasɛ tumi a wɔhwere to zero.
Ɔkwan a wɔfa so hu no gyina nnwinnade nhyehyɛe so. Ɔkwan a ɛyɛ mmerɛw ne battery tester a ɛwɔ ɔhyew tumi (te sɛ PK59B), a ɛkyerɛw ɔhyew ka emu resistance sɔhwɛ biara ho. Nea ɛkɔ anim kɛse ne intanɛt so nhyehyɛe a wɔde hwɛ ɔhyew a ɛwɔ sensor ahorow wɔ nkwammoaa biara so, data a wɔde kɔ so gu host a wɔhwɛ so so. Wɔ telecom ne UPS mmeae dodow no ara fam no, ɔhyew sɔhwɛ a wɔyɛ no bere ne bere mu a wɔde ka ho ne emu ahoɔden a ɛko tia ho sɔhwɛ no dɔɔso sɛ ɛbɛkyere ɔhyew a ɛnteɛ dodow no ara.
Ɛte sɛ nea ɔhyew ho sɔhwɛ yɛ mmerɛw nanso ɛwɔ adwumayɛ ho nsɛm a ɛfata sɛ yɛhyɛ no nsow. Nea edi kan: baabi a ɛsɛ sɛ wosusuw. Ɔhyew kyekyɛ wɔ battery mu nyɛ pɛ — terminals ne connections tu mmirika hyew sen nipadua no esiane Joule ɔhyew a efi contact resistance mu nti. Enti, susuw wɔ battery nipadua (mid-shell) sɛ nea wɔde gyina so titiriw, na terminal temperature yɛ nea ɛto so abien. Sɛ ɔhyew a ɛwɔ awiei no boro nipadua mu hyew boro 10°C a, ɛda adi sɛ nkitahodi ahorow no ayɛ mmerɛw na ɛsɛ sɛ wɔkyekyere no denneennen.
Nea ɛto so abien: bere a ɛsɛ sɛ wosusuw. Battery hyew kɔ soro bere a ɛrebɔ no, bere a ɛrebɔ nso, na ɛsan kɔ baabi a atwa yɛn ho ahyia nkakrankakra bere a woagye n’ahome no. Sɛ wopɛ sɛ wɔde toto sɔhwɛ ahorow nyinaa mu a, kyerɛw ɔhyew wɔ beae a ɛkɔ so daa wɔ sɔhwɛ kyinhyia no mu — sɛ nhwɛso no, bere nyinaa bere a float charge a ɛyɛ den, anaasɛ bere nyinaa wɔ discharge awiei. Sɛ ɛsono mmeae a wɔsusuw nneɛma a, ɛbɛyɛ den sɛ wɔbɛhwehwɛ ɔhyew ho nsɛm mu.
Nea ɛto so abiɛsa: sɛnea wɔkyerɛ ase. Ɔhyew akenkan biako da bere a wɔsusuw no nkutoo adi na ɛsɛ sɛ wɔde toto ɔhyew a atwa yɛn ho ahyia ho. Sɛ batere nipadua hyew boro baabi a atwa yɛn ho ahyia no boro 5°C a, emu hyew a ɛnteɛ rekɔ so sɛ mpo ɔhyew koraa da so ara sua a. Sɛ nkwammoaa mu hyew a ɛwɔ ahama bi mu no gu ahorow boro 3°C a, nkwammoaa no nhyia wɔ hɔ.
Wɔ akuw a wɔhwɛ batere so fam no, fa ɔhyew sɔhwɛ ka batere siesie ho nhyehyɛe a ɛwɔ hɔ dedaw no ho. Akuw a wɔwɔ PK59A betumi de infrared thermometer aka ho sɛ ɔhyew a wɔde ka ho; akuw a wɔwɔ PK59B de standard sensor no di dwuma tẽẽ. Ɛmfa ho adwinnade biara no, ade titiriw ne sɛ wobɛkyerɛw ɔhyew a ɛka sɔhwɛ biara ho.
Wɔ adetɔfoɔ a wɔwɔ mmeaeɛ a ɛhɔ hyeɛ nsakraeɛ kɛseɛ wɔ (mpɔtam a ɛhɔ yɛ hyeɛ, mmeaeɛ a ɛhɔ yɛ nwini a mmerɛ ahodoɔ anan) wɔ hɔ no, fa nhwɛsoɔ a ɛtumi sɔ ɔhyeɛ hwɛ (PK59B) di kan. Ɔhyew ho nsɛm a ɛyera no brɛ sɔhwɛ mu aba no mu nhwehwɛmu ase kɛse — wubetumi de bere ne mmɔdenbɔ koro no ara ahyɛ sɔhwɛ mu nanso wuntumi nhu sɛ ebia nea efi mu ba no yɛ nea ɛfata a ɔhyew ho nsɛm nka ho.
Sɛ yɛhwɛ yɛn anim a, battery siesie renya nkɔsoɔ akɔ multi-parameter comprehensive assessment — emu resistance, voltage, temperature, charge-discharge abakɔsɛm, ne nneɛma a atwa yɛn ho ahyia tebea a wɔaka abom denam data nhwehwɛmu so de ayɛ battery akwahosan nkontabuo a wɔabom ayɛ. Ɔhyew yɛ ade a ɛho nhia wɔ nhyehyɛe yi mu. View the Battery Test Instruments Collection
Ka wo project scenario ne ahwehwɛdeɛ kyerɛ yɛn, na yɛbɛma ano aduru a ɛfata no ahyia na yɛde quote ama wɔ nnɔnhwereɛ 24 ntam.
Nya Quote a Wɔde Ma KwaPK59A storage battery tester, PK59B tester with temperature, PK59C battery internal resistance tester, PK59D premium resistance tester — four series covering the complete needs from basic capacity/voltage/resistance testing to high-precision internal resistance consistency analysis. Handheld design, online testing supported, multi-chemistry compatible — designed for battery maintenance and acceptance at telecom base stations, UPS, and data centers.
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