I te tau 2025, neke atu i te 68% o ngā aituā pākahiko wira-rua hiko i ahu mai i ngā Pūnaha Whakahaere Pūhiko (BMS) kua pakaru, e ai ki ngā raraunga a te International Electrotechnical Commission. Ka aroturukihia e tēnei ara iahiko nui ngā pūtau lithium e 200 ngā wā ia hekona, e mahi ana i ngā mahi tiaki ora e toru:
1. Kaitiaki Ngaohiko
• Te Ārai i te Utu Nui rawa: Ka tapahia te mana i te >4.25V/pūtau (hei tauira, 54.6V mō ngā kete 48V) ka ārai i te pirau o ngā electrolyte
• Whakaora i te Ngaohiko Iti: Ka akiaki i te aratau moe ki te <2.8V/pūtau (hei tauira, <33.6V mō ngā pūnaha 48V) hei ārai i te kino kāore e taea te whakatika
2. Mana Whakahaere Auaha Hihiri
| Te Horopaki Mōrearea | Wā Urupare BMS | Ngā Huanga i Āraihia |
|---|---|---|
| Te taumaha rawa o te piki puke | Te rohenga o nāianei ki te 15A i roto i te 50ms | Te ngenge o te kaiwhakahaere |
| Takahanga ara-poto | Whati porowhita i roto i te 0.02s | Te rerenga wera pūtau |
3. Te Tirotiro Wera Maamaa
- 65°C: Mā te whakaiti i te mana ka ārai i te koropupū o ngā irahiko
- <-20°C: Ka whakamahana i ngā pūtau i mua i te utunga kia kore ai e whakakikoruatia ki te konutai lithium
Te Kaupapa Tirotiro-Toru
① Tau MOSFET: ≥6 ngā MOSFET whakarara e whakahaere ana i te tukunga 30A+
② Te Taurite o te Iahiko: >80mA ka whakaiti i te rerekētanga o te kaha o te pūtau
③ Ka ātete te BMS ki te urunga mai o te wai
Ngā Ārai Tino Hira
① Kaua rawa e utu i ngā papa BMS kua kitea (ka piki ake te tūponotanga ahi ki te 400%)
② Kaua e karo i ngā herenga o ia au ("ka whakakorea te parenga e te whakarerekētanga waea parahi")
"Ko te rerekētanga ngaohiko e neke atu ana i te 0.2V i waenga i ngā pūtau e tohu ana i te korenga o te BMS," te whakatūpato a Tākuta Emma Richardson, he kairangahau haumaru EV i UL Solutions. Mā ngā tirotiro ngaohiko ia marama me ngā mita maha ka roa ake te roa o te oranga o te kete mā te 3x.
Wā tuku: 16 o Ākuhata-2025
