![]() The dual chemistry SoC algorithm fully takes advantage of ternary lithium and LFP battery systems to realize constant battery SoC estimation and guarantee the accuracy. "NIO’s self-developed hybrid-cell battery SoC estimation system integrates the innovation of software algorithm and hardware application, which reduces the estimation error to less than 3%, reaching the level of ternary lithium battery SoC estimation. The LFP's SOC estimation accuracy has been improved too so it's now at the level of NCM type. And the dual chemistry control algorithm precisely controls the performance of ternary lithium and LFP cells in cold temperature to improve low-temp energy efficiency of the whole battery system. The hybrid layout of ternary lithium cells and LFP cells makes full use of the low-temp performance advantage of ternary lithium cells to improve the overall battery performance in low temperature. The radiant thermal compensation heater uniformly heats the battery cells to maintain the working temperature of the battery while taking into account the energy consumption. The intelligent thermal system coupling battery heat generation dynamically adjusts thermal control targets in combination with battery heat to balance the drive experience and energy consumption. "The comprehensive environment shielder applies low-thermal conductivity materials and innovative structural design for the source of heat loss in extremely cold environments in order to effectively improve passive thermal insulation performance. "NIO has designed a complete thermal management software and hardware system for the standard-range battery (75 kWh), which reduces the range loss in low temperature by 25% compared to its LFP counterpart." NIO says that it addressed the low-temperature issues through software and hardware solutions. Well, the energy density would be lower and there are other issues with the LFP chemistry like lower capacity and performance in cold weather and not as accurate estimation of the state-of-charge (SOC) due to the mostly flat voltage curve. One might ask why not switch to all-LFP battery if it's less expensive. ![]() increased energy density by 14% to 142 Wh/kg.simplified manufacturing and assembly by 10%.cell-to-pack (CTP) technology (no modules). ![]() 75 kWh (5 kWh or 7% more than 70 kWh previously).NIO standard-range, hybrid-cell battery pack stats: The results are pretty interesting, as the company is now able to offer a 75 kWh at a price of the outgoing 70 kWh version, which increases the range of ES8, ES6 and EC6 cars by at least several percent. NIO Hybrid-Cell Battery Pack - 75 kWh version ![]()
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