1. Izindlela Zokuvuka
Uma ivuliwe okokuqala, kunezindlela ezintathu zokuvuka (imikhiqizo yesikhathi esizayo ngeke idinge ukuqalisa):
- Ukuvuka kokuvula inkinobho;
- Ukuvula ukushaja kokuvuka;
- Ukuvuka kwenkinobho ye-Bluetooth.
Ngokuvula amandla okulandelayo, kunezindlela eziyisithupha zokuvuka:
- Ukuvuka kokuvula inkinobho;
- Ukuvula ukushaja kokuvuka (uma amandla okufaka ishaja okungenani angu-2V ngaphezu kwamandla ebhethri);
- 485 ukuvuka kokusebenza kokuxhumana;
- CAN ukuxhumana kusebenze wake-up;
- Ukuvuka kokwenza kusebenze (okwamanje ≥ 2A);
- Ukuvuka kokhiye wokwenza kusebenze.
2. Imodi yokulala ye-BMS
II-BMSingena kumodi yamandla aphansi (isikhathi esizenzakalelayo amasekhondi angu-3600) lapho kungekho ukuxhumana, kungekho shaji/ukukhipha amandla, futhi ingekho isignali yokuvuka. Phakathi nemodi yokulala, ukushaja nokukhipha ama-MOSFET ahlala exhumekile ngaphandle kwalapho kutholwa ukuthi ibhethri lingaphansi kwamandla kagesi, ngaleso sikhathi ama-MOSFET azonqamuka. Uma i-BMS ithola amasignali okuxhumana noma ama-charge/akhipha ama-currents (≥2A, futhi ukuze uvule ukushaja, i-voltage yokufaka yeshaja kufanele okungenani ibe ngu-2V ngaphezu kwamandla ebhethri, noma kube khona isignali yokuvuka), izophendula ngokushesha futhi ngena esimweni sokusebenza sokuvuka.
3. Isu Lokulinganiswa Kwe-SOC
Isamba sangempela somthamo webhethri kanye ne-xxAH zisethwa ngekhompyutha yomsingathi. Ngesikhathi sokushaja, lapho i-voltage yeseli ifinyelela inani eliphakeme kakhulu le-overvoltage futhi kukhona ukushaja kwamanje, i-SOC izolinganiswa ku-100%. (Ngesikhathi sokushajwa, ngenxa yamaphutha esibalo se-SOC, i-SOC ingase ingabi ngu-0% ngisho noma izimo ze-alamu engaphansi kwamandla zifinyelelwa. Qaphela: Isu lokuphoqa i-SOC ukuthi ibe liziro ngemva kokuvikelwa kokuphuma kwe-cell overdischarge (undervoltage) ingenziwa ngendlela oyifisayo.)
4. Isu Lokuphatha Iphutha
Amaphutha ahlukaniswa ngamaleveli amabili. I-BMS isingatha amazinga ahlukene amaphutha ngendlela ehlukile:
- Izinga 1: Amaphutha amancane, i-BMS ihlaba umkhosi kuphela.
- Izinga lesi-2: Amaphutha amakhulu, ama-alamu e-BMS futhi anqamule iswishi ye-MOS.
Kula maphutha alandelayo eLeveli 2, iswishi ye-MOS ayinqanyulwa: i-alamu yomehluko kagesi eyeqile, i-alamu yomehluko omkhulu wokushisa, i-alamu ye-SOC ephezulu, ne-alamu ye-SOC ephansi.
5. Ukulawula Ukulinganisa
Kusetshenziswa i-passive balancing. II-BMS ilawula ukukhishwa kwamaseli kagesi aphezulungama-resistors, akhipha amandla njengokushisa. Ibhalansi yamanje ingu-30mA. Ukulinganisa kuyaqalwa uma zonke lezi zimo ezilandelayo zifinyelelwa:
- Ngesikhathi sokushaja;
- I-voltage yokuvula yokulinganisa ifinyelelwe (iyalungiswa ngekhompyutha ebambayo); Umehluko wamandla kagesi phakathi kwamaseli > 50mV (50mV inani elizenzakalelayo, elilungiseka ngekhompyutha yomsingathi).
- I-voltage yokuvula ezenzakalelayo ye-lithium iron phosphate: 3.2V;
- I-voltage yokuvula ezenzakalelayo ye-ternary lithium: 3.8V;
- I-voltage yokuvula ezenzakalelayo ye-lithium titanate: 2.4V;
6. Isilinganiso se-SOC
I-BMS ilinganisela i-SOC isebenzisa indlela yokubala i-coulomb, iqongelela ukushaja noma ukukhipha ukuze ilinganisele inani le-SOC lebhethri.
Iphutha lesilinganiso se-SOC:
| Ukunemba | Ububanzi be-SOC |
|---|---|
| ≤ 10% | 0% < SOC < 100% |
7. Ukunemba kwamandla kagesi, okwamanje, kanye nezinga lokushisa
| Umsebenzi | Ukunemba | Iyunithi |
|---|---|---|
| Amandla kagesi | ≤ 15% | mV |
| Ingqikithi Yamandla Kagesi | ≤ 1% | V |
| Okwamanje | ≤ 3%FSR | A |
| Izinga lokushisa | ≤2 | °C |
8. Ukusetshenziswa kwamandla
- I-self-consumption current ye-hardware board lapho usebenza: <500µA;
- I-self-consumption current yebhodi lesofthiwe lapho usebenza: < 35mA (ngaphandle kokuxhumana kwangaphandle: < 25mA);
- Ukuzisebenzisa ngokwakho kumodi yokulala: <800µA.
9. I-Soft Switch kanye ne-Key switch
- I-logic ezenzakalelayo yomsebenzi we-soft switch inengqondo ephambene; kungenziwa egcizelele logic positive.
- Umsebenzi omisiwe wokushintsha ukhiye ukwenza i-BMS isebenze; eminye imisebenzi enengqondo ingenziwa ngezifiso.
Isikhathi sokuthumela: Jul-12-2024
