1. Hanyoyin Farkawa
Lokacin da aka fara kunna shi, akwai hanyoyi guda uku na farkawa (samfuran nan gaba ba za su buƙaci kunnawa ba):
- Farfado da kunnawar maɓalli;
- Farfado da kunnawar caji;
- Maɓallin Bluetooth yana farkawa.
Don kunna wutar lantarki na gaba, akwai hanyoyi shida na farkawa:
- Farfado da kunnawar maɓalli;
- Farfadowar kunnawar caji (lokacin da ƙarfin shigar da caja ya fi ƙarfin batirin aƙalla 2V);
- 485 kunna sadarwa farkawa;
- farkawar kunnawar sadarwa ta CAN;
- Farfadowar kunnawar fitarwa (na yanzu ≥ 2A);
- Farfadowar maɓalli.
2. Yanayin Barci na BMS
TheBMSyana shiga yanayin ƙarancin wutar lantarki (lokacin da aka saba shine daƙiƙa 3600) lokacin da babu sadarwa, babu wutar lantarki/fitarwa, kuma babu siginar farkawa. A lokacin yanayin barci, MOSFETs na caji da fitarwa suna kasancewa a haɗe sai dai idan an gano ƙarancin wutar lantarki na baturi, a lokacin ne MOSFETs za su yanke. Idan BMS ta gano siginar sadarwa ko wutar lantarki ta caji/fitarwa (≥2A, kuma don kunna caji, wutar lantarki ta shigarwar caja dole ne ta kasance aƙalla 2V sama da ƙarfin baturi, ko kuma akwai siginar farkawa), nan take zai amsa kuma ya shiga yanayin aiki na farkawa.
3. Tsarin Daidaita SOC
Ana saita ainihin ƙarfin batirin da xxAH ta hanyar kwamfutar mai masaukin baki. A lokacin caji, lokacin da ƙarfin tantanin halitta ya kai matsakaicin ƙimar ƙarfin lantarki kuma akwai wutar lantarki ta caji, za a daidaita SOC zuwa 100%. (A lokacin fitarwa, saboda kurakuran lissafin SOC, SOC bazai zama 0% ba koda lokacin da aka cika yanayin ƙararrawa na ƙarancin wutar lantarki. Lura: Ana iya keɓance dabarun tilasta SOC zuwa sifili bayan an fitar da ƙarin wutar lantarki (ƙarancin wutar lantarki).
4. Dabarun Magance Laifi
An rarraba kurakurai zuwa matakai biyu. BMS tana kula da matakai daban-daban na kurakurai ta hanyoyi daban-daban:
- Mataki na 1: Ƙananan kurakurai, ƙararrawa na BMS kawai.
- Mataki na 2: Lalacewa mai tsanani, ƙararrawa ta BMS da kuma yanke maɓallin MOS.
Ga kurakurai na Mataki na 2 masu zuwa, ba a yanke maɓallin MOS ba: ƙararrawar bambancin ƙarfin lantarki mai yawa, ƙararrawar bambancin zafin jiki mai yawa, ƙararrawar SOC mai yawa, da ƙararrawar SOC mai ƙasa.
5. Daidaita Daidaito
Ana amfani da daidaitawa mara aiki.BMS yana sarrafa fitar da ƙwayoyin lantarki mafi girmata hanyar masu adawa, suna watsar da makamashin a matsayin zafi. Matsakaicin wutar lantarki shine 30mA. Daidaito yana faruwa ne lokacin da aka cika duk waɗannan sharuɗɗan:
- A lokacin caji;
- Ana isa ga ƙarfin kunna daidaito (ana iya saita shi ta hanyar kwamfutar mai masaukin baki); Bambancin ƙarfin lantarki tsakanin ƙwayoyin halitta > 50mV (50mV shine ƙimar tsoho, wanda za'a iya saita shi ta hanyar kwamfutar mai masaukin baki).
- Ƙarfin wutar lantarki na asali don lithium iron phosphate: 3.2V;
- Ƙarfin wutar lantarki na tsoho don lithium na ternary: 3.8V;
- Ƙarfin wutar lantarki na asali don lithium titanate: 2.4V;
6. Kimantawar SOC
BMS tana ƙiyasta SOC ta amfani da hanyar ƙidayar coulomb, tana tara caji ko fitarwa don kimanta ƙimar SOC na batirin.
Kuskuren Kimanta SOC:
| Daidaito | Tsarin SOC |
|---|---|
| ≤ 10% | 0% < SOC < 100% |
7. Daidaiton Wutar Lantarki, Wutar Lantarki, da Zafin Jiki
| aiki | Daidaito | Naúrar |
|---|---|---|
| Ƙarfin Tantanin Halitta | ≤ 15% | mV |
| Jimlar Wutar Lantarki | ≤ 1% | V |
| Na yanzu | ≤ 3% FSR | A |
| Zafin jiki | ≤ 2 | °C |
8. Amfani da Wutar Lantarki
- Wutar lantarki ta amfani da kanta ta allon kayan aiki lokacin aiki: < 500µA;
- Na'urar amfani da kanta ta allon software lokacin aiki: < 35mA (ba tare da sadarwa ta waje ba: < 25mA);
- Wutar lantarki ta cinye kai a yanayin barci: <800µA.
9. Maɓallin Maɓalli Mai Laushi da Maɓalli
- Tsarin dabaru na asali don aikin sauya mai laushi shine juzu'i na dabaru; ana iya keɓance shi zuwa ga dabaru masu kyau.
- Aikin maɓalli na asali shine kunna BMS; sauran ayyukan dabaru za a iya keɓance su.
Lokacin Saƙo: Yuli-12-2024
