Nio improves battery in standard range

Nio claims that the new standard range of 75kWh hybrid cell batteries will reduce range loss at low temperatures by 25%.

Using patented technology, the new battery provides both a longer range and more accurate charge state (SoC) estimates in cold weather, while matching the battery performance of a ternary lithium battery.

This new standard range battery (75kWh) is a hybrid of three-component lithium and lithium iron phosphate (LFP) cells using a new generation of cell-to-pack (CTP) technology.

To achieve range performance gains, engineers have designed complete thermal management software and hardware systems for batteries. The hybrid layout of ternary lithium batteries and LFP batteries takes full advantage of the low temperature performance of these batteries and improves overall battery performance.

The dual chemistry control algorithm accurately controls the performance of 3-component lithium and LFP cells at low temperatures to improve energy efficiency. In addition, the radiant heat compensation heater heats the cell evenly to maintain the operating temperature of the battery while considering energy consumption.

Further improvements in passive insulation have been achieved using low thermal conductivity materials and innovative structural designs. The result is a 25% reduction in distance loss compared to LFP counterparts in cold environments.

The in-house developed hybrid cell battery SoC estimation system integrates both software algorithm and hardware innovations to reduce estimation error to less than 3%, thereby reaching the level of 3-component lithium battery SoC estimation. The dual chemistry SoC algorithm utilizes a three-component lithium and LFP battery system to ensure accuracy. The high power DCDC in the battery guarantees fast, real-time balanced SoC calibration.

CTP technology simplifies manufacturing and assembly by 10%, increases volume utilization by 55 and increases energy density by 14% to 142Wh / kg.

Standard and long-range three-component lithium batteries (100kWh) are now available for ordering new cars to be delivered in November.

The vehicle price of the new 75kWh battery is the same as the previous 70kWh battery.

Nio improves battery in standard range

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