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redwang8181

至尊木虫 (职业作家)

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[交流] 【求助】翻译一篇

Carl Watkins wishes to clarify the following. The first unit coming from LightEVs will be 1kWh. They may offer 400Wh units at some later date but certainly the first unit out of the gate will be 1kWh.
This is a correction to my previous LightEVS article here.
Our fearless leader B has taken it uppon himself to get ahold of Carl Watkins of LightEVS once again to answer a few questions on their expected product from EEStor.
It seems that the 2"2"8 e-bike battery that LightEVS expects to get from EEStor and demo to potentional manufacturers will be a 400Wh unit (and not the 1000 Wh unit as previously mentioned). This brings down its energy density to about 762 wh/L. -See calculation- . While much lower than the speculated 1900 wh/L, 700 Wh/L does not disapoint! 700 wh/L is still about 2.5 times the energy density of typical Li-Ion batteries.
Another tid-bit was given out by Carl from LightEVS. There is a design for a 1000Wh unit afterall. It would be approximatly 3"*4"*10" and hold 1000Wh. After a bit of calculation, this comes out to 508 Wh/L. -See Calculation- While slightly less energy dense than the 2x2x8 inch design, it was mentioned that both of these units would hold the EEStor cells and the power electronics in an aluminum box. I speculate that the lower Wh/L means that the 1kwh unit would have a higher power output to drive heavier e-bikes and e-cycles, therefor they have less energy density overall. Carl W. also mentioned that the power electronics for LightEVS would be much more compact than the power electronics ZENN would have (Most likely due to the power output needs.)
To put these new figures into perspective, I took a tape-measure to my E-Bike battery and found that it is about 6"*2.5"*14.5" and holds 324wh for a grand total of 90.9 Wh/L! It weighs 12 lbs. My current e-bike battery can ride me about 15-20 miles at full throttle and no peadling with a max speed of 23mph. It can provide a maximum output of about 700 watts at 24-42 volts (36v)

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