I roto i te kohinga pākahiko lithium-ion, he mea nui te rite o nga ruma.

Me timata te whakamarama ma te whakahua i te paanga o te peere, kia marama ake ai, kia marama ake ai.

Ko te kaupapa matua o te paanga o te peere ko te nui o te wai ka taea e te peere te pupuri kaore i te whakawhirinaki ki te waahanga teitei rawa atu., engari ki te wahi poto rawa o te peere.

Me whakaaro he putea pākahiko lithium he peere wai kei roto, katahi te pūtau pākahiko lithium e hanga ana i te kete pākahiko he rite ki te papa rakau e hanga ana i te peere, penei, ko te pūtau he kino rawa atu te mahi ka whakatau i te mahi katoa o te katoa o te kete pākahiko lithium.

No reira, mena he kino te riterite o te pūtau lithium-ion, mahi penei i te kaha, huringa ora, me nga ahuatanga o te utu-tuku ka pa ki etahi waahi. I te mea ka piki ake te maha o nga utu me nga tukunga e whakamahia ana i roto i nga kete pākahiko lithium, ka piki hoki tenei mahi kino.

Me pehea e tupu ai? He aha te arorau? Me whakamarama i raro nei:

Kei te mohio katoa tatou kei te whakamahia te BMS mo te whakamarumaru i te nuinga o nga kete pākahiko lithium. Kei a BMS te utu nui o te pūtau kotahi me te whakamarumaru i runga i te tukunga o te pūtau kotahi hei tiaki i nga pūtau lithium-ion mai i te utu me te tuku i roto i te awhe ngaohiko haumaru me te pono.. I te wa ka nui te utu o te waea kotahi, ka nui atu ranei te tuku, ka pa ki te oranga o te mahi, ka puta hoki he morearea haumaru.

Ko te pākahiko lithium ternary he kotahi te ngaohiko tapahi o te 2.5V, me te BMS i te nuinga o te waa ka whakatauhia te whakamarumaru-a-kotahi-a-roto ki te 2.8V. Ko te tikanga whakahaere whakamarumaru o te pākahiko lithium BMS ko te wa ka tae te ngaohiko o nga raupapa o nga pākahiko i roto i te kete pākahiko lithium ki te 2.8V., ka whakakāhia te whakamarutanga o runga-tuku, ka momotuhia te ngongo MOS tuku, te reera ranei, ka mutu te tukunga o te pākahiko katoa.

Tangohia he kete pākahiko lithium ternary o 10 i roto i te raupapa me 1 whakarara hei tauira.

Whakaarohia kei roto i nga 10pcs ternary pūtau pākahiko lithium, ko te mea iti rawa te kaha ko te 2000mAh, ko tetahi atu 9 He 2500mAh te kaha o nga pūtau pākahiko. I te wa e tukuna ana te putea lithium, te 10 kei te tukuna nga pūtau i te wa ano, ka heke te ngaohiko o nga pūtau ka heke te kaha.

I te wa ka tukuna te pūtau 2000mAh me te kaha iti, ka tae te ngaohiko pūtau ki te 2.8V, ko tetahi atu 9 he 2500mAh tonu te kaha o nga pūtau kei roto i te kete pākahiko me te ngaohiko kei runga ake i te 3.0V. Ka kitea e te BMS ina he raupapa ngaohiko e eke ana ki te 2.8V te kete pākahiko, kua whakakāhia te whakamarutanga o runga-tuku, ka mutu te tukunga o te pākahiko katoa.

Ko tenei ka puta te kaha tuku o te 2000mAh anake mo te putea pākahiko katoa.

He rite te paanga ki tera i te wa e tukuna ana

Ko te ngaohiko katoa o te pūtau pākahiko lithium ternary he 4.2V, a ko te BMS o te kohinga pākahiko lithium e whakatakoto ana i te whakamarumaru utu nui kotahi ki te 4.25V. Ka piki ake te ngaohiko o te pūtau pākahiko ki te piki o te kaha.

A, no te te pākahiko ki te kaha iti o 2000mAh kua kakato, tae te ngaohiko pākahiko 4.25V, me tetahi atu 9 karekau nga pūtau i te tino whakakiihia, kei raro iho te ngaohiko i te 4.1V, but when the BMS detects a series of voltages higher than 4.25V, it starts the battery pack overcharge protection, the entire battery pack stops charging.

This results in the battery pack can only charge 2000mAh, not 2500mAh.

This is how the bucket effect does to the lithium battery pack, that is the cell with the lowest capacity determines the charge capacity and discharge capacity of the whole lithium battery pack.

The same influence of the poor consistency of battery cells happens to the battery pack cycle life.

The lithium battery cell with the worst cycle life in the battery pack determines the overall performance of the lithium battery pack.

The consistency of lithium battery packs includes open circuit voltage, kaha, and internal resistance. More deeply, it also includes the K value (self-discharge rate), huringa ora, charge and discharge characteristics, take.

Before the lithium battery pack is assembled, the cells will be sorted and assembled. The standard of matching is generally: the battery capacity difference is controlled within 1%; the voltage difference is within 3mV; the internal resistance difference is within 2mΩ.

As for the K value, huringa ora, and charge-discharge characteristics, these consistency factors need to be controlled at the source of the battery cell manufacturers/factories. Standardization of core mass production, automated control, take.