1. Njira Zodzutsira Mtima
Mukayamba kuyatsa, pali njira zitatu zodzutsira (zinthu zamtsogolo sizidzafunika kuyatsa):
- Kutsegula batani;
- kuyatsa kuyambitsa kuyatsa;
- Kutsegula batani la Bluetooth.
Pa kuyatsa kotsatira, pali njira zisanu ndi chimodzi zodzutsa:
- Kutsegula batani;
- Kutsegula kwa kuyatsa kwa chaji (pamene magetsi olowera a chaji ali oposa 2V kuposa magetsi a batri);
- 485 kuyambitsa kulumikizana;
- Kutsegula kwa CAN yolumikizirana;
- Kutsegula kwa mphamvu yotulutsa mphamvu (yamakono ≥ 2A);
- Kutsegula makiyi.
2. BMS Tulo Mode
TheBMSImalowa mu mode ya mphamvu yochepa (nthawi yokhazikika ndi masekondi 3600) pamene palibe kulumikizana, palibe mphamvu yoyatsira/kutulutsa, komanso palibe chizindikiro chodzuka. Mu mode yogona, ma MOSFET ochaja ndi kutulutsa amakhalabe olumikizidwa pokhapokha ngati batire silikulandira mphamvu yokwanira, pamenepo ma MOSFET amasiya kugwira ntchito. Ngati BMS ipeza zizindikiro zolumikizirana kapena ma current ochaja/kutulutsa (≥2A, ndipo kuti iyambe kuyatsa, mphamvu yolowera ya charger iyenera kukhala yokwera ndi 2V kuposa mphamvu ya batri, kapena pali chizindikiro chodzuka), idzayankha nthawi yomweyo ndikulowa mu mkhalidwe wogwirira ntchito.
3. Njira Yoyezera Ma SOC
Mphamvu yeniyeni ya batri ndi xxAH imayikidwa kudzera pa kompyuta yolandirira. Pakuchaja, pamene magetsi a selo afika pamlingo wapamwamba kwambiri wa overvoltage ndipo pali chaji yamagetsi, SOC idzasinthidwa kufika pa 100%. (Pakutulutsa, chifukwa cha zolakwika za mawerengedwe a SOC, SOC singakhale 0% ngakhale pamene zinthu za alamu ya undervoltage zakwaniritsidwa. Dziwani: Njira yokakamiza SOC kukhala zero pambuyo poti chitetezo cha cell overvoltage (undervoltage) chisinthidwe.)
4. Njira Yothetsera Zolakwika
Zolakwika zimagawidwa m'magawo awiri. BMS imagwira ntchito mosiyanasiyana pamlingo wosiyana wa zolakwika:
- Gawo 1: Zolakwika zazing'ono, ma alarm a BMS okha.
- Gawo 2: Zolakwika zazikulu, ma alarm a BMS ndikudula switch ya MOS.
Pa zolakwika zotsatirazi za Level 2, switch ya MOS siidulidwa: alamu yosiyana kwambiri ya voltage, alamu yosiyana kwambiri ya kutentha, alamu ya SOC yapamwamba, ndi alamu yocheperako ya SOC.
5. Kulamulira Bwino
Kulinganiza kosachitapo kanthu kumagwiritsidwa ntchito.BMS imalamulira kutulutsa kwa maselo amphamvu kwambirikudzera mu resistors, zomwe zimachotsa mphamvu ngati kutentha. Mphamvu yolinganiza ndi 30mA. Kulinganiza kumachitika pamene zinthu zonse zotsatirazi zakwaniritsidwa:
- Panthawi yochaja;
- Voliyumu yoyatsa magetsi imafikiridwa (yokhazikika kudzera pa kompyuta ya host); Kusiyana kwa voliyumu pakati pa maselo > 50mV (50mV ndiye mtengo wokhazikika, wokhazikika kudzera pa kompyuta ya host).
- Voltage yoyambira yoyambitsa ya lithiamu iron phosphate: 3.2V;
- Voltage yoyambira yoyambira ya lithiamu ya ternary: 3.8V;
- Voltage yoyambira yoyambitsa ya lithiamu titanate: 2.4V;
6. Kuyerekeza kwa SOC
BMS imayesa SOC pogwiritsa ntchito njira yowerengera coulomb, ndikusonkhanitsa mphamvu kapena kutulutsa kuti iyerekeze mtengo wa SOC wa batri.
Cholakwika pa Kuyerekeza kwa SOC:
| Kulondola | Mtundu wa SOC |
|---|---|
| ≤ 10% | 0% < SOC < 100% |
7. Kulondola kwa Voltage, Current, ndi Kutentha
| Ntchito | Kulondola | Chigawo |
|---|---|---|
| Voteji ya Maselo | ≤ 15% | mV |
| Voliyumu Yonse | ≤ 1% | V |
| Zamakono | ≤ 3% FSR | A |
| Kutentha | ≤ 2 | °C |
8. Kugwiritsa Ntchito Mphamvu
- Mphamvu yodzigwiritsira ntchito yokha ya bolodi la zida ikagwira ntchito: < 500µA;
- Mphamvu yodzigwiritsira ntchito yokha ya bolodi la mapulogalamu ikagwira ntchito: < 35mA (popanda kulumikizana kwakunja: < 25mA);
- Mphamvu yodzigwiritsira ntchito yokha mu sleep mode: < 800µA.
9. Switch Yofewa ndi Switch Yofunika
- Logistic yokhazikika ya ntchito ya soft switch ndi inverse logic; ikhoza kusinthidwa kukhala positive logic.
- Ntchito yokhazikika ya key switch ndikuyambitsa BMS; ntchito zina za logic zitha kusinthidwa.
Nthawi yotumizira: Julayi-12-2024
