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Solar system design examples of 2V250AH lithium battery pack

Solar system design examples of 2V250AH lithium battery packBasic comparison of common battery performance




Secondary battery classification


Lithium Ion Battery


NiMH batteries


Nickel-cadmium batteries


Lead-acid batteries


Nickel-zinc battery




Positive system


Lithium transition metal oxide


Nickel hydroxide


Nickel hydroxide


Lead


Nickel hydroxide




Negative system


Layer of graphite


Hydrogen storage alloy


Cadmium oxide


Sponge


Zinc oxide




Diaphragm system


PP / PEPP, or PE


PP


nylon


Glassic fiber cotton


glass




Electrolyte system


Hasoni salt electrolyte


KOH aqueous solution


KOH aqueous solution


Dilute sulfuric acid


KOH aqueous solution




Q


3.0V - 3.7V


1.2V


1.2V


2.0V


1.6V




Volume energy density


350-400WH / 1


320-350WH / I


160-180WH / 1


65-80WH / I


170WH / I




Weight energy density


180-200Wh / kg


60-65WH / kg


40-45WH / kg


25-30WH / kg


55-60WH / kg




Battery principle


Ion migration


Redox reduction


Redox reduction


Redox reduction


Redox reduction




Charge and discharge method


Constant current constant pressure charge


Constant current charging


Constant current charging


Constant current charging


Constant current charging




Charging end point control


Constant current / restriction


- △ V / constant current limit


- △ V / constant current limit


Limited flow regulation


- △ V constant current limit




safety


Have a certain hidden danger


Safety


Safety


Safety


Safety




Environmental friendly


Environmental friendly


Environmental friendly


Cadmium pollution


Lead pollution


Environmental friendly




* Good working temperature


0c-45 ° C


-20c-45c


-20 ° C -60 ° C


-40 ° C -70 ° C


-20 ° C -60 ° C




Price (yuan / WH)


2.2-2.8 / wh


3.5-4.0 / wh


2.2-2.8 / wh


0.7-1.0 / wh


3.0-3.5 / wh




Charger cost


Height (constant current constant pressure)


General (- ΔV or ΔT control, constant current source)


General (- ΔV or ΔT control, constant current source)


Low (steady source)


General (- V or male T control, constant current source)







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