1. Hanyoyin Farkawa
Lokacin da aka kunna farko, akwai hanyoyin farkawa guda uku (samfuran nan gaba ba za su buƙaci kunnawa ba):
- Maɓallin kunnawa farkawa;
- Canjin kunnawa caji;
- Maɓallin Bluetooth farkawa.
Don kunnawa na gaba, akwai hanyoyin farkawa guda shida:
- Maɓallin kunnawa farkawa;
- Tashewar kunna caji (lokacin da ƙarfin shigar da cajar ya fi ƙarfin ƙarfin baturi aƙalla 2V);
- 485 farkawa kunna sadarwa;
- Farkawa na kunna sadarwa na CAN;
- Farkawa na kunna fitar da wuta (na yanzu ≥ 2A);
- Maɓallin kunnawa farkawa.
2. Yanayin Barci BMS
TheBMSYana shiga yanayin ƙarancin ƙarfi (tsoho lokacin shine 3600 seconds) lokacin da babu sadarwa, babu caji/fiɗawar halin yanzu, kuma babu siginar tashi. A lokacin yanayin barci, caji da fitar da MOSFETs suna kasancewa a haɗa su sai dai idan an gano ƙarancin baturi, a lokacin MOSFETs za su katse haɗin. Idan BMS ya gano siginar sadarwa ko igiyoyin caji / fitar da ruwa (≥2A, kuma don kunnawa caji, ƙarfin shigar da cajar dole ne ya zama aƙalla 2V sama da ƙarfin baturi, ko kuma akwai siginar tashi), nan take zai amsa kuma shiga yanayin aikin farkawa.
3. SOC Calibration Strategy
Ana saita ainihin jimlar ƙarfin baturi da xxAH ta hanyar kwamfutar mai masaukin baki. Lokacin caji, lokacin da ƙarfin lantarki ya kai matsakaicin ƙimar juzu'i kuma akwai caji na yanzu, SOC za a daidaita shi zuwa 100%. (Lokacin fitarwa, saboda kurakuran lissafin SOC, SOC bazai zama 0% ba ko da lokacin da yanayin ƙararrawa mara ƙarfi ya cika. Lura: Dabarar tilasta SOC zuwa sifili bayan kariyar wuce gona da iri (ƙasa) ana iya keɓance shi.)
4. Dabarun Magance Laifi
Laifi an kasasu kashi biyu. BMS na sarrafa matakan kurakurai daban-daban daban-daban:
- Mataki na 1: Ƙananan kurakurai, ƙararrawa BMS kawai.
- Mataki na 2: Laifi masu tsanani, ƙararrawa na BMS kuma suna yanke maɓallin MOS.
Don kurakuran Level 2 masu zuwa, ba a yanke canjin MOS: ƙararrawar bambancin ƙarfin lantarki mai wuce kima, ƙararrawar bambancin zafin jiki, ƙararrawar SOC mai girma, da ƙaramar ƙararrawa ta SOC.
5. Daidaita Kulawa
Ana amfani da daidaita ma'auni. TheBMS na sarrafa fitar da mafi girman ƙarfin lantarkita hanyar resistors, watsar da makamashi kamar zafi. Matsakaicin halin yanzu shine 30mA. Ana haifar da daidaitawa lokacin da aka cika duk waɗannan sharuɗɗan masu zuwa:
- Lokacin caji;
- An kai ma'aunin kunna wutar lantarki (wanda aka saita ta hanyar kwamfutar mai watsa shiri); Bambancin ƙarfin lantarki tsakanin sel> 50mV (50mV shine ƙimar tsoho, wanda aka saita ta kwamfutar mai masaukin).
- Tsoffin kunna wutar lantarki don lithium baƙin ƙarfe phosphate: 3.2V;
- Tsoffin kunna wutar lantarki don ternary lithium: 3.8V;
- Tsoffin kunna wutar lantarki don lithium titanate: 2.4V;
6. Ƙimar SOC
BMS tana ƙididdige SOC ta amfani da hanyar kirga coulomb, tara caji ko fitarwa don kimanta ƙimar SOC na baturi.
Kuskuren Kiyasin SOC:
| Daidaito | Farashin SOC |
|---|---|
| ≤ 10% | 0% < SOC < 100% |
7. Ƙimar wutar lantarki, halin yanzu, da daidaiton yanayin zafi
| Aiki | Daidaito | Naúrar |
|---|---|---|
| Wutar Lantarki ta salula | ≤ 15% | mV |
| Jimlar Wutar Lantarki | ≤ 1% | V |
| A halin yanzu | ≤ 3% FSR | A |
| Zazzabi | ≤ 2 | °C |
8. Amfani da Wutar Lantarki
- Yin amfani da kai na yanzu na allon kayan aiki lokacin aiki: <500µA;
- Yin amfani da kai na yanzu na hukumar software lokacin aiki: <35mA (ba tare da sadarwar waje ba: <25mA);
- Yin amfani da kai a halin yanzu a yanayin barci: <800µA.
9. Soft Switch and Key Switch
- Tsohuwar dabaru don aikin sauyawa mai laushi shine sabanin dabaru; ana iya keɓance shi zuwa dabaru masu kyau.
- Tsohuwar aikin maɓallin maɓallin shine kunna BMS; sauran dabaru ayyuka za a iya musamman.
Lokacin aikawa: Jul-12-2024
