Golf carts are often used in outdoor environments where temperatures can rise above 35°C for extended periods, particularly in tropical or subtropical regions. High temperatures pose significant risks to golf cart batteries, including accelerated capacity degradation, increased self-discharge rate, electrolyte evaporation, and even safety hazards such as thermal runaway. To ensure reliable operation in high-temperature conditions, golf cart battery manufacturers focus on improving the battery’s high-temperature stability through material optimization, structural design, and thermal management technologies.

The choice of battery chemistry is a key factor in determining high-temperature adaptability. LiFePO4 (lithium iron phosphate) batteries are widely recognized for their superior high-temperature stability compared to traditional lead-acid batteries and other lithium-ion battery types. LiFePO4 batteries have a high thermal decomposition temperature (above 300°C), which significantly reduces the risk of thermal runaway even in high-temperature environments. In contrast, lead-acid batteries experience electrolyte evaporation and plate corrosion when temperatures exceed 32°C, leading to rapid capacity loss and shortened service life. For example, at 45°C, LiFePO4 batteries can maintain around 1,800 charge-discharge cycles, while lead-acid batteries only last about 250 cycles under the same conditions. Additionally, manufacturers optimize the electrolyte formula of LiFePO4 batteries by adding high-temperature stabilizers, which reduce electrolyte decomposition and improve the battery’s stability at high temperatures.

Thermal management systems are essential for maintaining the battery’s operating temperature within a safe range in high-temperature environments. Passive thermal management systems use heat-dissipating materials and structural designs to facilitate heat transfer. For example, the battery pack is equipped with aluminum heat sinks or heat-dissipating plates, which absorb heat generated by the battery cells and transfer it to the surrounding air through convection. The battery pack’s casing is also designed with ventilation holes to promote airflow, accelerating heat dissipation. Some models use phase-change materials (PCMs) that melt at a specific temperature, absorbing a large amount of heat to keep the battery cool. Active thermal management systems, such as fans or liquid cooling systems, are used in high-power golf cart batteries to enhance heat dissipation efficiency. These systems are controlled by a BMS, which monitors the battery temperature and activates the cooling mechanism when the temperature exceeds a threshold (usually 40°C to 45°C).

Structural design optimizations also play a crucial role in improving high-temperature adaptability. The battery pack is designed to ensure uniform heat distribution, preventing local overheating which can damage individual cells. For example, the battery cells are arranged with sufficient spacing to allow airflow between them, and the current collectors are designed to minimize resistance, reducing heat generation during charging and discharging. The casing of the battery pack is made of high-temperature-resistant materials, such as flame-retardant ABS or aluminum alloy, which can withstand high temperatures without deformation or melting. Additionally, the BMS is equipped with over-temperature protection functions, which automatically reduce the charging and discharging current or shut down the battery when the temperature exceeds a safe limit, preventing damage and ensuring safety. Redway Battery’s LiFePO4 golf cart batteries, for example, can operate stably at temperatures up to 60°C, maintaining 80% of their capacity and ensuring reliable performance for golf carts in hot climates. These improvements not only extend the battery’s service life in high-temperature environments but also ensure the golf cart’s consistent performance throughout the day.