Battery Testing Fundamentals: Capacity, Voltage, im Internal Resistance — Jilu oran ko rej kwalok aolepen bwebwenato eo

Bwebwenato

Māe 8, 2020

Kwojjab maroñ in ekajete juon battery kin juon wōt oran. Bōd eo elaptata ej tõmak bwe elap voltage ej melelen juon battery eo emourur — juon battery eo ej jijet ion shelf eo iumwin jiljino allōñ im elap an self-discharge emaron kwalok voltage eo elap an open-circuit ke joñan an maroñ in kajerbale ej diklok kin jimettan. Ilo oktak, juon battery eo etto ippāñ taujin cycle ko emaron kwalok voltage eo emman ak ej diklok jen joñan eo iumwin load. Waanjonok kein ruo rej kwalok bwe juon wōt parameter ej tellok ñan bōd in etale: maroñ, voltage, im internal resistance rej aikuj in aolep etale ibben don.

Kajoor, Voltage, im Internal Resistance: Jilu wāween ko an ājmour in battery

Joñan ej kwalok joñan kajoor eo battery eo emaron in dāpij, ekkā an kwalok ilo ampere-awa (Ah) — joñan charge eo emaron in lelok ilo jekjek in discharge eo ekkar. An jako maroñ ej men eo ej kwalok kin an battery eo rūttolok. Juon battery eo ej 100Ah im emaron in lelok 70Ah elikin jilu yio ewōr an joñan ejmour (SOH) in 70%. Test in maroñ ej aikuj in lukkun jolok ñan joñan voltage eo, eo ej bōk elap ien — ekkã an jab ekkar ñan lale ko ilo ran otemjej, ak ej aorōk ñan test in bōk, etale in kejbãrok ko ilo yio otemjej, im lale jemlokin mour.

Internal resistance ej kwalok impedance eo ilowaan battery eo, joñe ilo milliohms (mΩ). Ewōr jilu m̧ōttan ko ie: polarization resistance (jen electrochemical reaction kinetics), ohmic resistance (jen electrode material resistivity im contact interfaces), im electrolyte resistance. Battery ko rekãl rej kwalok air maroñ in jume ilo joñoul in milliohms ak diiklok. Ilo an laplok oran cycle ko im electrolyte ko rej diklok, resistance eo ilowaan ej wōnmanlok jidik kin jidik. Meļeļe eo eaorōk ej bwe kajoor eo ilowaan im jako in maroñ eo ejjab linear — bōbrae ej oktak jidik wōt ilo m̧ōttan eo m̧oktata in mour, innām ej m̧ōkajļo̧k ilo m̧ōttan eo āliktata. Ilo ien eo joñan eo ear diklok, maroñ in jumae emaron kar ruo alen ak laplok. Menin ej kōmman bwe jumae eo ilowaan en emman ñan kakkōl mokta jen ekajet eo eliktata.

Voltage ej juon men eo elaptata an alikar ak ej barāinwōt juon men eo emōkaj an bōd an riiti. Open-circuit voltage (OCV) ej kwalok wōt joñan charge eo (SOC) — joñan kajoor eo ej bed wōt — jab joñan an battery eo maroñ in lelok. Juon 12V lead-acid battery ilo 12.6V ej lukkun charge; ilo 12.0V ej 75% SOC; ilo 11.4V enañin 25% SOC; ilo 10.5V ej epaak an jako. Ak SOC im SOH rejjab juon wōt men — juon battery ilo SOC eo eutiej ippāñ resistance eo eutiej ilowaan enaj wōtlo̧k ium̧win voltage in jerbal eo ilo iien eo ej kōjerbal eddo eo, im kein jerbal eo enaaj bōjrak jekdo̧o̧n ta. Voltage ej aikuj in aolep ien melele kake ibben load, ikijen load testing ak capacity testing, jab ikijen open-circuit voltage make.

Ñāāt ñan kōjerbal Capacity Testing vs. Internal Resistance Testing

Application ko reoktak rej aikuji wāween test ko reoktak, im kālet wāween eo ebōd ej joļo̧k iien im emaron̄ likjab jān apan̄ ko rem̧ool. Capacity testing (full discharge) ej joñan eo emman tata ñan lale ejmour in battery eo, ak ewōr ruo men ko rej aikuj in kōmmane mokta: ej aikuj in lukkun jolok battery eo, melelen bōk juon online system offline; im ej bōk ien eo elap — juon 100Ah battery eo ej jerbal ilo 5A ej aikuj 20 awa. Test in maroñ ej ekkar ñan: bōk battery ko rekãl, etale ko kin kejbãrok ilo kajjojo yio, lale jemlokin mour eo an battery eo mokta jen an ukõt battery eo, im etale eo elap ilo ien etale bōd ko.

Internal resistance test ej mõkaj, ejjab kakkure, im emaron in online. Joñjoñ ej bōk wōt jejjo wōt sekoņ, ejjab aikuj in bōkļo̧k battery eo jān jerbal, im ejjab aikuj in kōtļo̧k. Menin ej kōmmane bwe en emman ñan etale ko ilo aolep allōñ: lale battery ko ilo telecom base station ko, etale internal resistance ko ilo UPS battery bank ko, im etale battery ko an data center ko. Ilo ad keidi joñan an kajoor cell ko ilowaan juon battery string, cell ko remõjno remaroñ in kile — elañe juon cell ej kwalok elaplok jen 30% an kajoor jen joñan eo an kumi eo, ej aikuj in lale meñe joñan eo an ej bed wot ilo spec eo.

Juon wewein eo ej bed ilo load voltage test eo: kōjerbal juon load eo edik ien, moderate-current load (ekkā an joñoul amps ñan jejjo second ko ñan joñoul second ko) im joñe voltage sag eo. Menin elaplok an melele jen open-circuit voltage ak elaplok an mõkaj jen full capacity testing, im kōmmane bwe en emman ñan etale elañe juon battery emaron mour ilo ien eo ej walok ilo ien eo kein jerbal ko rej jino jerbal. PK59A storage battery tester ej jipan load testing mode in — ejelok jolok battery im ejelok aikuj in jolok battery eo.

PK59A: Kobaik jilu men ko ilo juon wōt kein jerbal

Test battery ko etto rar kajerbal jilu kein jerbal ko: juon voltmeter ñan voltage, juon discharge instrument ñan capacity, im juon internal resistance meter ñan resistance. Apañ ko rej alikar — elōn kein jerbal ko, wiring ko rebin, data ko rejjab errā, im tokjen ko rebin ñan kōmmane. Ri jerbal ro rar aikuj in jeje jilu riit ko reoktak jen dron, innem likiti ilo juon system ilo opiij eo. Jabdrewot bōd ilo chain eo — transcription, data entry, ak interpretation — ej melelen bwe data eo ear jab jejjet.

PK59A ej kobaik joñan maroñ, joñan kajoor, im joñan an kajoor ilo juon kein jerbal eo ej jibwe ilo pein. Wãwen joñan eo an ej kajerbal juon jiljino-wire (Kelvin) ñan joñan joñan an maroñ in joñe, im jolok joñan an maroñ in joñe test lead. Juon circuit in discharge eo ekkar ej kōmman bwe en maroñ in wōr discharge ilo jidik ien ñe ej aikuj. Voltage ej sample ikijen juon ADC eo elap an jejjet. Aolep jilu parameter ko rej walok ilo juon wōt screen, tokjen ko rej make wōt kōllaajrake, im ejelok aikuj in kōmman manual transcription.

Ilo jerbal, PK59A ej kobaiktok tokjen ikijen melele ko rediklok. Ej jipan elōn kain battery ko — lead-acid, lithium-ion, nickel-metal hydride — aolep remaroñ joñe kin juon wōt kein jerbal, im ej jolok aikuj in kein jerbal ko rej jerbal ñan chemistry. Ej kejbãrok tokjen test ko ñan keidi ibben data ko etto. Display eo an ej letok juon verdict eo ejimwe — PASS / WARNING / FAIL — jen baj riit ko rejimwe, kōtlok bwe rijerbal ro ilo jikin eo ren etale joñan battery eo ilo juon wōt kalimjōk. Ej barāinwōt wōr an automatic joñan bwil im molo, kōmman bwe en jimwe joñan bwil im molo eo ilo jikin ko elap ak edik bwil im molo bwe joñan bwil im molo en jab ukõt tokjen ko.

Emān bōd ko rej walok ilo ien mālijjon ko

Ilo jerbal in mālijjon̄ in battery ko ilo jikin kallib, elōn bōd ko rej bar walok rej kōmman jorrāān ko rejjab aikuj. Meļeļe kaki ej bōbrae jorrāān ko remol. Bōd eo moktata ej joñan voltage ilo ejelok resistance ilowaan. Einwot kar konono kake, voltage ej kwalok wōt SOC, jab ejmour in battery eo. Ri jerbal in kōjparok ro rej liki voltage — lemnok bwe voltage eo ekkar ej melelen juon battery emman — rej wōnmanlok wōt im jerbal kin battery ko me resistance eo air ej lukkun lap, mae ien eo kein jerbal eo ej rup ilo juon ien eo elap tokjen.

Bōd eo kein karuo ej kōjekdoon joñan an jejjet battery string eo. Juon battery string ej emman wōt einwot cell eo an eo emõjno tata. Elañe resistance eo ilowaan ej oktak elap ibwiljin cell ko, string eo enaj mōjno iumin cutoff voltage ilo ien high-current discharge kin barrel effect eo, meñe kajjojo cell ko rej bed ilo spec eo ilo absolute resistance. Ñe kwoj test juon string, aolep ien joñe aggregate eo im kajjojo cell ko, lukkun lale cell ko me resistance eo air ej oktak jen 30% jen group average eo.

Bōd eo kein kajilu ej ​​likjab in rekoote im etale melele ko. Elōñ rijerbal ro rej kadedelok juon test, riiti oran ko, innem etal — data eo ejjab deloñ ilo maintenance system eo. Ilo ien test eo tok juon, ejelok ial in jelā ta eo ear oktak ilo ien eo. Wāween eo ejimwe ej ñan rekoote joñan an kajoor im kajoor ilowaan ālkin kajjojo mālijjon̄, kalōk juon rekoot in ājmour an kajjojo cell. Ñe juon cell ej kwalok an mōkaj an eddeklok, bōk jikin ej aikuj in kōmmane mokta jen an jorrāān.

Bōd eo kein kajilu ej ​​ad jab lale joñan bwil im molo eo ilo mejatoto. Battery eo ilowaan im maroñ eo an rej jimor lukkun pedped wōt ioon joñan bwil im molo. Ñan lead-acid battery ko, kajjojo 10°C ej wõnmanlok ej kadiklok joñan an maroñ in jume ilo 30% im kalaplok joñan maroñ eo air kin 10%; ej walok ilo joñan bwil im molo edik. Ilo an ejelok joñan bwil im molo, joñan bwil im molo eo kar bōk ilo season ko reoktak jen dron rejjab maroñ in keidi. PK59A temperature compensation feature ej bed wōt ñan kamadmõde abañ in.

Naan in kakapilōk ko rejimwe ñan tiim in kōjparok im ri wia ro

Kōjparok battery eo ej etal jen baj joñan wōt joñan an kajoor battery eo. Juon jerbal in test eo ejejjet ej aikuj in koba: test in bōk battery ko rekãl (kōmeļeļeik SOH eo jinointata ilo 100%), etale internal resistance eo ilo ien jerbal (quarterly ñan general use, monthly ñan telecom base stations), annual capacity spot-checks (fully discharge 20% in cells), im inspection ko relaplok ilo jikin ko ñe elap an jako kajur.

Ñe kwoj kālet kein jerbal in test ko, wōnan wōt ejjab aikuj in men eo ej kōmman bebe. Juon wōt kein jerbal eo ej joñe joñan maroñ, voltage, im internal resistance ej diiklok wōnan, elaplok an tiljek, im ediklok an bōk ien jen jilu kein jerbal ko rej jerbal juon wōt. Aorōk eo an juon kein jerbal einwot PK59A ejjab baj jimwe in joñan — ej maroñ eo ñan kadedelok juon etale in battery ilo lalem minit jen ruo awa in wiring, discharging, im data transcription.

Ri wia ro rej aikuj barāinwōt lale men ko rejjab lukkun alikar ilo kein wia ko: elañe kein jerbal eo ej jibañ data export ñan kobaiktok ibben maintenance management system eo; elañe battery clip ko rej maroñ in bōk kain terminal ko reoktak jen don ilo jikin eo; elañe online (no-remove) testing ej jerbal; im elañe jerbal in warranty im calibration rej jejjet — kein jerbal in test ko make rej aikuj calibration ilo ien ko rejejjet. Meļeļe kein rej kwalok elañe kein jerbal eo ej lukkun jerbal ak ej meloklok ilo juon drawer. View the Battery Test Instruments Collection