锂电网讯:保时捷新能源汽车的800V的系统,相信大家一直很好奇。
随着更多车企喜欢官方告诉我们这个工程设计,这次媒体采访的是这两位总监:
Otmar Bitsche, Director of Development Electrics, Electronics, Electromobility at Porsche
Michael Kiefer, Director of High-Voltage Systems at Porsche Engineering
从图上我们可以进行一些信息解读:
90kWh 分成多少个模组是个问题,采用三列的方式进行排布;
目前能直接看到的有25个模组,根据盖板下面估算,可能一共有30个模组;
两个模组是VDA的捆在一起,根据通信线缆来看,应该是分布式CMU的设计
通过高压化,整个高压连接器的尺寸和线束都比较细
采用了两根大的熔丝
在这一边还配置了一根独立的熔丝
铜排处理上,也是比较有意思的,细节看不到
电池能量密度采访,可能采用老的NCM 111,大约180wh/kg的方案
Currently high-voltage batteries using the latest lithium-ion technology are the gold standard. They offer an energy density of currently about 180 watt hours per kilogram
冷却方案
按照这个设计,整个液冷通道是整合在电池框架里面去了,从框架里面走液冷管路,冷却板直接在框架下方,形成了外框架和内框架;
冷却管路输入为红管;
输出为蓝管,直接往下方走;
有关800V 快充的设计变种:做800V的系统,如何在动力电池系统上兼容传统的400V低压的100kW左右的充电桩,这里保时捷的想法是采用了一个变种的升压器,通过Boost的办法来把电压升起来。
We have two different variants, the charging park and the ChargeBox. The park is designed for locations with more available space in which a very high volume of charges is to be expected, 24 hours a day, seven days a week. With a small compact station, however, a charging park is possible in the city as well, for example in a residential area. For all areas with extreme space constraints, there is our second variant, the ChargeBox with an integrate battery. It can be connected to the normal low-voltage grid and enables fast charging in spite of its compact dimensions.
小结:正常保时捷的车是很难对标的,不是它官方给我们信息,我们一般真不大好定到它的跑车去看具体怎么设计的,还有一点非常重要就是一体化的液冷托盘设计,非常的有意思,路虎、奥迪和保时捷都这么来的