Today marks Great Heat, the hottest solar term of the year. As The Interpretation of the 72 Pentads notes, "heat reaches its peak." Ancient wisdom captured this sweltering poetry through observations like "fireflies emerging from decaying grass" and "moist, sweltering earth." Traditional practices—such as herbal jelly in Guangdong, lychees in Fujian, or mutton soup in southern Shandong—embrace "countering heat with heat," while modern life gains tech-driven cool: constant temperatures in air-conditioned rooms, electric vehicle rides—all powered by a "heart": lithium-ion batteries.

How Li-ion Batteries Stay "Calm" in Extreme Heat

Great Heat’s extreme temperatures are a litmus test for Li-ion performance. Guihang New Energy’s batteries tackle summer challenges with technology:

Great Heat Li-ion Care Guide

1. Cell-Level "Firewall"
   Inspired by aerospace materials, nano-insulating aerogel fills gaps between cells, with high-temperature mica sheets on top and ultra-low thermal conductivity materials at the bottom—forming multi-layer barriers. Even at 60°C ambient, cell operating temperature stays stable within the 35°C safe range, slowing heat transfer effectively.
2. Intelligent Thermal Management
   A millisecond-level BMS (Battery Management System) monitors each cell in real time. Over 45°C triggers liquid cooling, keeping temperature differences within 2°C to prevent local overheating. Abnormalities trigger current cutoff in 0.5–1 second, eliminating thermal runaway risks.

Avoid Peak Charging: Charge at night instead of 11:00–16:00 to reduce battery stress. Charge Level Management: Maintain 20%–80% daily; reserve 50% for long storage to prevent electrode damage from full charge or depletion. Parking Sun Protection: Prioritize garages or shade; use sunshades for outdoor parking to avoid rapid battery compartment heating.