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发表于 2012-2-23 10:21
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来自: 美国
我是根据以前做volt时候的经验估计的。GM工程师告诉我大概就是10KWh 200kg,当然,那是2009年,现在科技进步了,也许密度增高了。
我去wikipeida搜了下,
The Volt's lithium-ion battery (Li-ion) battery pack weighs 435 lb (197 kg) and consists of 288 individual cells arranged into nine modules. Plastic frames hold pairs of lithium-ion cells that sandwich an aluminum cooling fin. The design and construction of that aluminum plate was critical to ensuring an even temperature distribution with no hot or cool spots across the flat, rectangular cell. The battery pack has its own cooling circuit that is similar to, but independent from, the engine cooling system.[48][55]
The battery pack stores 16 kW·h of energy but it is controlled or buffered via the energy management system to use only 10.4 kW·h of this capacity to maximize the life of the pack. For this reason the battery pack never fully charges or depletes, as the software only allows the battery to operate within a state of charge (SOC) window of 65%, after which the engine kicks in and maintains the charge near the lower level. The minimum SOC varies depending on operating conditions. When more power is required, such as mountain mode, the lower limit of the SOC will raise to 45% to ensure there is enough power available.[12][48]
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