1. Izindlela Zokuvuka
Uma ivuliwe okokuqala, kunezindlela ezintathu zokuvuka (imikhiqizo yesikhathi esizayo ngeke idinge ukwenziwa isebenze):
- Ukuvuka kokusebenza kwenkinobho;
- Ukuvuka kokusebenza kokushaja;
- Inkinobho yokuvusa ye-Bluetooth.
Ukuze uvule kabusha okulandelayo, kunezindlela eziyisithupha zokuvuka:
- Ukuvuka kokusebenza kwenkinobho;
- Ukuvuka kokusebenza kokushaja (lapho i-voltage yokufaka yeshaja iphakeme okungenani ngama-2V kune-voltage yebhethri);
- 485 ukuvuselelwa kokuxhumana;
- ukuvuka kokusebenza kokuxhumana kwe-CAN;
- Ukuvuka kokusebenza kokukhipha i-discharge (okwamanje ≥ 2A);
- Ukuvuka kokusebenza kokhiye.
2. Imodi Yokulala ye-BMS
II-BMSingena kwimodi yamandla aphansi (isikhathi esizenzakalelayo singamasekhondi angu-3600) lapho kungekho ukuxhumana, kungekho ukushaja/ukukhipha amandla kagesi, futhi kungekho signali yokuvuka. Ngesikhathi semodi yokulala, ama-MOSFET okushaja nokukhipha amandla kagesi ahlala exhunyiwe ngaphandle kokuthi kutholakale ukungabi namandla kagesi kagesi kwebhethri, lapho ama-MOSFET ezonqamuka khona. Uma i-BMS ithola izimpawu zokuxhumana noma ama-current okushaja/ukukhipha amandla kagesi (≥2A, futhi ukuze kusebenze ukushaja, i-voltage yokufaka yeshaja kumele okungenani ibe ngaphezu kuka-2V kune-voltage yebhethri, noma kukhona isignali yokuvuka), izosabela ngokushesha futhi ingene esimweni sokusebenza sokuvuka.
3. Isu Lokulinganisa i-SOC
Umthamo wangempela webhethri kanye ne-xxAH usethwa ngekhompyutha ephethe. Ngesikhathi sokushaja, lapho i-voltage yeseli ifinyelela inani eliphezulu kakhulu le-overvoltage futhi kukhona amandla okushaja, i-SOC izolinganiswa ibe yi-100%. (Ngesikhathi sokukhipha, ngenxa yamaphutha okubalwa kwe-SOC, i-SOC ingase ingabi yi-0% ngisho nalapho izimo ze-alamu ye-undervoltage zihlangatshezwa. Qaphela: Isu lokuphoqelela i-SOC ibe yi-zero ngemuva kokuvikelwa kwe-cell overdischarge (undervoltage) kungenziwa ngezifiso.)
4. Isu Lokusingatha Amaphutha
Amaphutha ahlukaniswe amazinga amabili. I-BMS iphatha amazinga ahlukene amaphutha ngendlela ehlukile:
- Izinga 1: Amaphutha amancane, ama-alamu e-BMS kuphela.
- Izinga 2: Amaphutha amakhulu, ama-alamu e-BMS futhi anqamule iswishi ye-MOS.
Kumaphutha alandelayo e-Level 2, iswishi ye-MOS ayinqanyulwa: i-alamu yokwehluka kwamandla kagesi ngokweqile, i-alamu yokwehluka kwamandla okushisa ngokweqile, i-alamu ye-SOC ephezulu, kanye ne-alamu ye-SOC ephansi.
5. Ukulawula Ukulinganisela
Kusetshenziswa ukulinganisela okungasebenzi.I-BMS ilawula ukukhishwa kwamaseli e-voltage aphezulungokusebenzisa ama-resistor, echitha amandla njengokushisa. Umthamo wokulinganisela ungu-30mA. Ukulinganisela kuyaqaliswa uma zonke lezi zimo ezilandelayo zihlangatshezwa:
- Ngesikhathi sokushaja;
- I-voltage yokusebenzisa ngokulinganisela ifinyelelwa (ingalungiswa ngekhompyutha ephetheyo); Umehluko we-voltage phakathi kwamaseli > 50mV (50mV inani elizenzakalelayo, elingalungiswa ngekhompyutha ephetheyo).
- I-voltage yokusebenza ezenzakalelayo ye-lithium iron phosphate: 3.2V;
- I-voltage yokuqalisa ezenzakalelayo ye-ternary lithium: 3.8V;
- I-voltage yokusebenza ezenzakalelayo ye-titanate ye-lithium: 2.4V;
6. Isilinganiso se-SOC
I-BMS ilinganisa i-SOC isebenzisa indlela yokubala i-coulomb, iqongelela ukushaja noma ukukhipha ukuze ilinganisele inani le-SOC yebhethri.
Iphutha Lokulinganisa i-SOC:
| Ukunemba | Ububanzi be-SOC |
|---|---|
| ≤ 10% | 0% < SOC < 100% |
7. Ukunemba kwe-Voltage, i-Current, kanye ne-Temperature
| Umsebenzi | Ukunemba | Iyunithi |
|---|---|---|
| I-Voltage Yeseli | ≤ 15% | mV |
| I-Voltage Ephelele | ≤ 1% | V |
| Okwamanje | ≤ 3%FSR | A |
| Izinga lokushisa | ≤ 2 | °C |
8. Ukusetshenziswa Kwamandla
- Ugesi osetshenziswayo webhodi yehadiwe uma usebenza: < 500µA;
- Ugesi wokusebenzisa webhodi lesofthiwe uma usebenza: < 35mA (ngaphandle kokuxhumana kwangaphandle: < 25mA);
- Ugesi ozisebenzisayo kumodi yokulala: < 800µA.
9. I-Soft Switch kanye ne-Key Switch
- I-logic ezenzakalelayo yomsebenzi we-soft switch i-logic ephambene; ingenziwa ngokwezifiso ibe yi-logic enhle.
- Umsebenzi ozenzakalelayo weswishi yokhiye ukwenza kusebenze i-BMS; eminye imisebenzi ye-logic ingenziwa ngokwezifiso.
Isikhathi sokuthunyelwe: Julayi-12-2024
