Simulate how the outside temperature, your highway speed and consecutive charges affect the thermal performance of your Blade battery and the DC fast charging speed.
20°C
88 kW
38 min
The Blade LFP (Lithium Iron Phosphate) battery of the BYD Atto 3 stands out for its excellent structural safety, but due to its lithium-iron chemical properties, its fast charging acceptance speed in direct current (DC) depends closely on the temperature of the cells. cells:
It occurs at low temperatures. If the LFP cells are below 15°C, the electrolyte viscosity is high and the passage of lithium ions is slow. To prevent metallic lithium sedimentation ('lithium plating') that generates short circuits and degrades the battery forever, the BMS severely restricts the power to about 25 - 45 kW.
It occurs after chaining successive DC fast charges at high speed in summer. The internal resistance generates heat due to the Joule effect that raises the internal temperature above 48°C. To protect the cells from premature thermal degradation, the BMS drastically reduces the charging power to around 30 - 45 kW.
The Atto 3 features an integrated heat pump capable of actively heating or cooling the liquid coolant of the Blade battery. Activating the battery preheating en route before arriving at the station (via navigation or manually if available) brings the cells to the ideal temperature of 22°C to achieve the maximum power of 88 kW.
The direct current (DC) charging power of the Atto 3 describes an optimal plateau of 88 kW up to 60% of SoC, at which point the power is decreased in steps (e.g. 50 kW to 70%, 30 kW to 85%) to protect the cells from overvoltages and overheating.