Ukhuseleko lwe-BMS False Overvoltage: Kutheni Iqala Kwangethuba kwaye Ungalulungisa Njani
I-BMS ikhusele i-overvoltage. Kodwa xa ujonga i-voltage yephakheji - okanye i-voltage yeseli ephakathi - ifundeka ngolu hlobo3.45Vngeseli nganye, ngaphantsi kakhulu3.65VUmlinganiselo we-over-voltage we-LiFePO4. I-BMS ibonakala ngathi ayisebenzi kakuhle.
Phantse ngokuqinisekileyo, akunjalo. I-BMS isabela kwimeko yokwenyani - hayi le uyijongayo. Ukuqonda oko i-BMS ikuxelela kona ngoko nangoko into omawuyijonge.
Oko Iimonitha zeBMS: I-Voltage ngeSeli, Hayi i-Avareji
Ukhuseleko lwe-BMS olugqithisileyo luyasabela kwii-voltage yeseli nganye, hayi kwi-avareji ye-pack voltage okanye i-total pack voltage eyahlulwe yi-cell count.
Ukuba ipakethi ye-16S LiFePO4 inomlinganiselo we3.45Vngeseli nganye (isimbuku55.2V), kodwa iseli enye ikwi3.66Vngelixa abanye bephakathi3.44V, i-BMS iya kukhubeka kukhuseleko lwe-over-voltage kuloo seli inye. Ngaphandle, i-pack voltage ibonakala ilungile. I-BMS isebenza ngokuchanekileyo — ifumanise imeko yokwenyani ye-over-voltage kwiseli ephezulu.
I-BMS ithatha uhambo lwe-OVP kule seli— nangona umndilili wepakethi ulungile
Le yeyona nto ixhaphakileyo ebangela ukuba kubekho umbane ogqithisileyo "ongamanga". Ayiyonyani le nto. Yimbane ogqithisileyo kwiseli yokwenyani enyuka inyuka ngaphezu kwabamelwane bayo.
Izizathu Ezine — Zichongwa Ngepateni
| Unobangela | Xa idlula | Oko kuboniswa yi-app | Lungisa |
|---|---|---|---|
| Ukungalingani kweeseli | Kusondele ekupheleni kwetshaja; iseli enye ngaphambili | Iseli enye ephezulu; ezinye zisezantsi | Ukulinganisela okusebenzayo; umjikelo opheleleyo wokulinganisela |
| I-voltage yetshaja iphezulu kakhulu | Yonke iseshoni yokutshaja ekupheleni | Iiseli ezininzi eziphezulu ezisondela kwi-OVP | I-voltage yetshaja ephantsi kwiinkcukacha zepakethi |
| Umda we-OVP ubekwe phantsi kakhulu | Ube ngumphathi kwangethuba kunokuba bekulindelwe | Iiseli zingaphantsi kakhulu kwi-3.65V, kodwa ziyatsha | Jonga kwaye ulungise umda we-BMS |
| Ukhuseleko lobushushu alulungiselelwanga kakuhle | Kwiindawo ezishushu kakhulu | Ubushushu bepakethi buyanyuka; i-OVP iyatsha ngaphambi kokukhuselwa kobushushu | Qinisekisa imida yokukhusela ubushushu |
Isizathu 1: Ukungalingani kweeseli (Okuqhelekileyo)
Njengoko iiseli zikhula kwaye zijikeleza, umahluko omncinci kukumelana kwangaphakathi kubangela ukuba ziqhekeke ngexesha lokutshaja. Iseli enokumelana okuphantsi itshaja ngokukhawuleza kwaye ifikelela kumda we-over-voltage ngaphambi kwezinye. Xa loo seli inye ifika3.65V, uhambo lwe-BMS — nangona uninzi lwephakheji lukwi-3.44Vkwaye angamkela intlawulo engaphezulu.
Indlela yokuqinisekisa
Vula i-app ye-DALY BMS ngexesha leseshoni yokutshaja kwaye ujonge i-voltage nganye yeseli. Ukuba iseli enye inyuka ngokukhawuleza kunezinye - qhubela phambili nge-50–100mV ngaphambi kokuba ezinye zilingane.3.50V— ukungalingani yimbangela.
Indlela yokulungisa
Ukuba akukho kungalingani okuncinci (iseli enye engama-30–50mV ngaphezu kwezinye): qhuba iseshoni yokutshaja kancinci kwi-0.1C kwaye ushiye ipakethi iqhagamshelwe emva kokuba itshaja icimile. Oku kunika isekethe yokulinganisela engasebenziyo ixesha lokuphuma kwegazi kwiseli ephezulu phezulu kwetshaja.
Kwingxaki yokungalingani okuqhubekayo ebuya ngokukhawuleza emva kwemizamo nganye yokulinganisela: isisombululo esifanelekileyo yi-Smart BMS ene-active balancing. I-Active balancing isebenza kulo lonke umjikelo wokutshaja (hayi kuphela phezulu kwetshaja), isasaza ngokutsha itshaja phakathi kweeseli ukuze iseli ephezulu ingabaleki phambili kwasekuqaleni.
Isizathu sesi-2: I-Charger Voltage iphezulu kakhulu
Ukuba i-voltage yokukhupha itshaja idlula i-voltage ephezulu yokutshaja yephakheji (iiseli × umda we-OVP), ukutshaja kuya kuqhuba iiseli ngaphezulu komlinganiselo we-OVP kwiseshoni nganye.
Indlela yokuqinisekisa
Jonga i-voltage ye-charger output nge-voltmeter. Kwipakethi ye-16S LiFePO4, i-output ye-charger ayifanele idlule16 × 3.65V = 58.4VItshaja elinganiswe kwi-60V kwiphakheji ye-16S iya kuchitha i-OVP ngokuthembekileyo kuyo yonke imijikelo yokutshaja.
Indlela yokulungisa
Lungisa i-voltage yokukhupha itshaja ukuze ihambelane nenkcazo yephakeji, okanye tshintsha itshaja nge-voltage elinganiswe ngokuchanekileyo kwiphakeji. Kwi-LiFePO4, i-voltage ephezulu yokutshaja eqhelekileyo yi3.65Vngeseli nganye — umzekelo58.4Vkwi-16S,29.2Vkwi-8S,14.6Vze-4S.
Isizathu sesi-3: I-OVP Threshold Set iphantsi kakhulu
Ukuba i-BMS yayilungiselelwe ngaphambili nge-conservative over-voltage threshold — umzekelo,3.55Vngaphandle kwe3.65VkwiLiFePO4 — ukutshaja okuqhelekileyo kuya kukhubeka ngaphambi kokuba iiseli zizele.
Indlela yokuqinisekisa
Jonga useto lwe-BMS kwi-DALY app okanye kwisoftware yekhompyutha ephezulu. Yiya kwisetingi zomda wokhuseleko kwaye uqinisekise umda wokhuseleko olugqithisileyo ngokuchasene nenkcazo yekhemistri yeseli yakho.
Indlela yokulungisa
Lungisa umda we-OVP ukuze uhambelane neenkcukacha zomenzi weseli yakho zevolthi ephezulu yokutshaja. Kwiiseli zeLiFePO4 eziqhelekileyo,3.65Vngeseli nganye yeyona iphezulu kwishishini.Musa ukuseta ngaphezulu kweenkcukacha zeseli— ukudlula i-voltage ephezulu yokutshaja kweseli kubangela ukuwohloka okukhawulezileyo, kwaye kwiimeko ezigqithisileyo, umngcipheko wokhuseleko.
Isizathu sesi-4: Ukhuseleko lobushushu alulungelelaniswanga kakuhle
Kwiindawo ezishushu — indawo evalekileyo engenamoya, indawo eshushu yasehlotyeni, okanye indawo ephumayo ngamandla kwi-charge cycle — iphakheji kufuneka ikhuselwe yi-BMSubushushuImida yokhuseleko ngaphambi kokuba i-OVP ibe lukhuselo olufanelekileyo. Ukuba ubona uhambo lwe-OVP kwiimeko ezishushu ngelixa ukhuseleko lobushushu lungasebenzanga, imida yobushushu isenokungacwangciswanga kakuhle okanye ingasebenzi.
Indlela yokuqinisekisa
Jonga ukufundwa kobushushu kwi-app ye-BMS ngexesha leseshoni yokutshaja xa i-OVP idlula. Ukuba ubushushu bepakethi busondela okanye budlula uluhlu lokutshaja olucetyiswayo ngumenzi weseli (ngesiqhelo ngaphantsi kwama-45°C kwi-LiFePO4), ukhuseleko lobushushu kufuneka lube lubangela - hayi i-OVP. Qinisekisa ukuba umda wokhuseleko lobushushu obuphezulu uvuliwe kwaye usetelwe ngaphakathi kweenkcukacha zomenzi weseli.
Indlela yokulungisa
Lungiselela ukhuseleko lokutshaja oluphezulu ukuze lubandakanyeke ngaphambi kokuba iiseli zifikelele kubushushu obungakhuselekanga. Phucula umoya ovalekileyo. Musa ukunciphisa umda we-OVP ukuze uhlawule iingxaki zobushushu — okufihla ingxaki yokwenyani (ubushushu) kwaye ushiye iphakheji ivezwe kuxinzelelo lobushushu.
Indlela Yokubuyisela Umva Emva Kohambo Lwe-OVP
Ukhuseleko lwe-over-voltage luyaphela ngokuzenzekelayo xa i-voltage yeseli ebangela ukuba i-trigger ingasebenzi kakuhle ihla ngaphantsi komlinganiselo wokubuyisela we-OVP (ixabiso elibekwe ngaphantsi kwe-OVP trip point). Oku kwenzeka rhoqo xa:
Itshaja ayicinywanga— i-voltage yeseli iyehla njengoko itshaja yomphezulu iphela.
Umthwalo uqhagamshelwe okwethutyana— itsala i-voltage ephezulu yeseli.
Ukudluliselwa okanye ukuphuma kwegazi kwisekethe yokulinganisela ye-BMS kuyatshaja kude neseli ephezulu— i-voltage iyancipha.
Musa ukuzama ukuseta kwakhona i-BMS ngesandla okanye ukuyinyanzela ukuba yamkele itshaji engaphezulu. I-OVP ikhona ukukhusela iseli ephezulu ekuqhutyweni ngaphezu kwevolthi ephezulu. Sombulula unobangela oyintloko (ukungalingani, ivolthi yetshaja, ukuseta umda, okanye ubushushu) ngaphambi kweseshoni elandelayo yetshaji.
Indlela i-DALY Smart BMS enceda ngayo ekuxilongeni oku
Ukuchonga i-OVP trip ngokuchanekileyo kufuna ukubona i-voltage nganye kwiseli ngexesha elifanelekileyo lohambo - amandla asekelwe kwi-DALY Smart BMS.
II-DALY Smart BMSibonisa ii-voltage zeeseli nganye ngexesha langempela. Xa i-OVP idlula, i-app ibonisa ukuba yeyiphi iseli eyibangeleyo - ngoko ke unobangela oyintloko (iseli enye ephezulu, zonke iiseli ziphezulu kunye, okanye ukungalingani kobushushu) kubonakala ngoko nangoko endaweni yokuqikelelwa emva koko.
Irekhodi yeziganeko zembali irekhoda iseli ebangela i-OVP kunye neemeko zesiganeko ngasinye se-OVP, ukuze ukwazi ukubona ukuba iseli enye ibangela i-OVP rhoqo na (ibonisa ukungalingani okuqhubekayo) okanye ukuba iiseli ezininzi zifikelela kwi-OVP kunye (ibonisa ingxaki yetshaja okanye yomgca).
Kwiipakethi ezihlala zishukuma,Uthotho lwe-Active Balancingithatha inyathelo elinye eliya phambili: endaweni yokopha itshaja evela kwiiseli eziphezulu ngokusebenzisa ii-resistor, idlulisela itshaja phakathi kweeseli kuyo yonke imijikelo yokutshaja, igcina ipakethe ilungelelene ngaphambi kokuba nayiphi na iseli ibalekele kwi-OVP.
Imibuzo ebuzwa qho
I-app ye-BMS ibonisa i-voltage yephakheji ye-56V kwiphakheji ye-16S — oko kukuthi i-3.5V nge-avareji yeseli. Kutheni i-OVP ikhubeka?
Umda we-OVP usebenza kwii-voltage yeseli nganye, hayi umndilili wepakethi. Ukuba iseli enye ikwi3.66Vngelixa abanye bephakathi3.48V, i-OVP iya kukhubeka kuloo seli nangona umndilili wepakethi ubonakala ulungile. Vula umbono wevolthi yeseli nganye kwi-app — iseli ephezulu iya kubonakala ngaphezulu kwezinye. Thumela uqwalaselo lwepakethi yakho (ivolthi yenkqubo, inani leeseli, umthamo) kwiqela lethu kwaye singakunceda ukuqinisekisa ukuba i-BMS yakho yangoku inika ukubonakala kweseli nganye kubunzulu obufunayo.
Ndilungise umda we-OVP uphezulu ukuze ndiyeke uhambo. Ngaba oko kukhuselekile?
Ukulungisa umda ukuze uhambelane ne-voltage ephezulu yokutshaja yeseli yakho kukhuselekile (kwi-LiFePO4 eqhelekileyo, oku kukhuselekile3.65Vngeseli nganye). Ukuyilungisangasentlainkcazo yeseli yokuthulisa uhambo olubonisa ingxaki yokwenyani ayivumeli iiseli ukuba ziqhutywe ngaphezulu kwevolthi ephezulu, okukhawulezisa ukonakala kwaye, kwiimeko ezigqithisileyo, kudala umngcipheko wokhuseleko. Lungisa unobangela oyintloko wohambo endaweni yokuphakamisa umda udlule inkcazo yeseli.
Iseli efanayo isoloko ibangela i-OVP kuqala. Ngaba kufuneka itshintshwe?
Akunjalo ngokuyimfuneko. Iseli efikelela kwi-OVP rhoqo ngexesha lokutshaja yiseli enokumelana okuphantsi kwangaphakathi, amandla amancinci aseleyo, okanye zombini - ivele izale kuqala.Iseli ekufuneka itshintshwe yileyo ifikelela kwi-under-voltage kuqalangexesha lokukhululwa(umthamo ophantsi okanye ukumelana okuphezulu phantsi komthwalo), ayilo etshaja ngokukhawuleza. Ukuze uhlukanise ezi, jonga zombini iziphelo zomjikelo kwi-app ye-BMS: itshaja ephezulu kwiiseli ze-OVP-first, izantsi lokukhupha kwiiseli ze-UVP-first. Ukulinganisela okusebenzayo kugcina ipakethe ilungelelene nokuba yeyiphi iseli edla ngokuzalisa kuqala, nto leyo ehlehlisa isidingo sokutshintshwa.
I-BMS yam inokulinganisela okungasebenziyo kunye nokusebenzayo — yintoni eyenza umsebenzi?
Uninzi lweeyunithi zeSmart BMS eziqhelekileyo zisebenzisa i-passive balancing — umsinga omncinci ophumayo (ngokuvamile ukusuka kumashumi ukuya kumakhulu e-mA) osebenza xa iseli iwela umda wokuqala kwebhalansi kufutshane nephezulu kwetshaja. Uthotho lwe-DALY Active Balancing lusebenzisa ukudluliselwa kwetshaja (ngokuvamile iklasi ye-multiple-amp) kwaye lusebenza kuyo yonke imijikelo yetshaja, kungekuphela nje phezulu. Kwizicelo zokungalingani okuncinci kunye nokutshaja kancinci, i-passive yanele. Kwiipakethi ezibonisa ukushukuma okuqhubekayo phakathi kweeseshoni, i-active balancing yindlela yokuphucula. Sithumelele ipakethi yakho kwaye usebenzise imeko ukuze ufumane ingcebiso.
Isishwankathelo: Ipateni → Isizathu → Ukulungiswa
| Ipateni | Unobangela | Lungisa |
|---|---|---|
| Iseli enye ihlala ifikelela kwi-OVP; ezinye zingezantsi | Ukungalingani kweeseli — iseli enye itshaja ngokukhawuleza | Iiseshoni zokulinganisela okusebenzayo okanye zokulinganisela itshaja kancinci |
| Zonke iiseli ezisondela kwi-OVP kunye | I-voltage yetshaja iphezulu kakhulu | Isiphumo setshaja esisezantsi ukuze sihambelane neenkcukacha zepakethi |
| I-OVP kwi-voltage ebonakala iphantsi kakhulu | Umda umiselwe ngendlela engachanekanga | Jonga kwaye ulungise umda we-OVP kwiisetingi ze-BMS |
| I-OVP kwiindawo ezishushu ngelixa ukhuseleko lobushushu lungathethi | Ukhuseleko lobushushu alulungiselelwanga kakuhle | Qinisekisa umda wokhuseleko lwetshaja yobushushu obuphezulu |
Ngaba ufuna i-BMS ebona unobangela wokwenyani ngemizuzwana?
Sithumelele amanani amane kwaye siza kucebisa ulungiselelo olufanelekileyo lwe-DALY Smart BMS kwiphakheji yakho — ngokubonakala kweseli nganye kunye necebo elifanelekileyo lokulinganisela ipateni yakho yokungalingani.
- I-voltage yenkqubo (12V / 24V / 48V / 72V okanye eyenziwe ngokwezifiso)
- Inani leeseli kuthotho (S)
- Umthamo oqhelekileyo (Ah)
- Ukusetyenziswa (indawo yokugcina ilanga / i-EV / i-e-bike / i-UPS / industrial)
Fumana ingcebiso yoqwalaselo
Phendula zingakapheli iiyure ezingama-24 · Iqela lobunjineli, hayi iskripthi sokuthengisa
Ukuze ufumane uxilongo olunzulu ngemiba enxulumene ne-BMS, jonga izikhokelo zethu kwiindlela yokuxilonga ukusilela konxibelelwano lwe-BMSkwayeukulinganisela okusebenzayo kunye nokungashukumiyo kwiipakethi zeLiFePO4.
Amanqaku ngonyango lomthombo
I-voltage ephezulu yokutshaja kweseli ye-LFP eyi-3.65V/iseli igcinwa rhoqo kuzo zonke imithombo yewebhu ezizimeleyo ezilishumi elinanye ekhankanyiweyo apha ngasentla (ireferensi 1–11) kwaye ihambelana neenkcukacha zomenzi oyintloko we-CATL/EVE/CALB. Eli xabiso liphathwe njengeliqinisekisiweyo ngokupheleleyo.
Iinkcazo zangaphakathi zobuchule bemveliso (umboniso ngeseli nganye, irekhodi yembali, indlela yokuziphatha yokulinganisela) zichazwe ngokwemigangatho kwinqaku endaweni yexabiso elithile lamanani (ukuchaneka kwe-mV, izinga lokuhlaziya, amandla okugcina iziganeko, ukulinganisela ukulinganiswa kwangoku), kulindele ukuqinisekiswa kobunjineli kwezo nkcukacha.
Icandelo leCause 4 (Temperature) lakhiwe ngabom malunga nokulungiswa okungalunganga komgangatho wokhuseleko lobushushu endaweni yokuxhomekeka ngqo kumbane vs ubushushu, kuba uncwadi lukawonke-wonke lwe-LFP aluxhasi ubudlelwane obucocekileyo bomlinganiselo wefomu ethi "ukuphakama kobushushu X°C → ukunyuka kombane weseli Y mV" phantsi kweemeko zokutshaja. Ifreyimu ekhethiweyo apha ithintela abasebenzisi ekufumaniseni ingxaki yobushushu ngendlela engafanelekanga njengengxaki yombane.
Ixesha lokuthumela: Meyi-09-2026
