Liquid-cooled battery packs have been identified as one of the most efficient and cost effective solutions to overcome these issues caused by both low temperatures and high temperatures.
To ensure the safety and service life of the lithium-ion battery system, it is necessary to develop a high-efficiency liquid cooling system that maintains the battery’s temperature within an appropriate range. 2. Why do lithium-ion batteries fear low and high temperatures?
In order to design a liquid cooling battery pack system that meets development requirements, a systematic design method is required. It includes below six steps. 1) Design input (determining the flow rate, battery heating power, and module layout in the battery pack, etc.);
The development content and requirements of the battery pack liquid cooling system include: 1) Study the manufacturing process of different liquid cooling plates, and compare the advantages and disadvantages, costs and scope of application;
• Cells with up to 12,000 cycles. • Lifespan of over 5 years; payback within 3 years. • Intelligent Liquid Cooling, maintaining a temperature difference of less than 2℃ within the pack, increasing system lifespan by 30%. • High-stability lithium iron phosphate cells. • Three-level fire protection linkage of Pack+system+water (optional).
When the lithium-ion battery is in a high-temperature environment, the side reactions of the battery increase, which leads to the continuous consumption of lithium ions during the cycle, and the battery capacity decays rapidly.