The battery thermal management system includes vehicle thermal management, battery thermal management and battery core thermal management, which are closely linked and indispensable. Among them, battery thermal management is the foundation and core of the whole thermal management system, and it is the decisive external factor to ensure the safety of battery operation. The thermal management system can prevent the local temperature of the battery from being too high, so that the battery can be quickly heated in a low temperature environment and effectively dissipated in a high temperature environment, thereby reducing the temperature difference of the battery cells, ensuring that the battery is in a suitable working range and avoiding the danger of thermal runaway. Effective thermal management of battery system is of great significance for improving the overall performance of battery pack.
From the point of view of a single cell
The thermal runaway of bicycle battery is controlled from structural design, top safety valve, anode and cathode materials, production technology and other aspects, so as to ensure that once the single battery is subjected to external force, the module and the whole package are not affected, delay the time of thermal diffusion, and cooperate with the structural design of vehicle manufacturers to minimize the risk factor of drivers and passengers. From the perspective of battery modules, BIC constantly explores BMS technology and liquid cooling design technology between modules to protect battery safety.
Take BIC 18650-3.0AH high-energy core as an example.
Bicycle battery was developed from 20 15, and it took three years to complete the chemical design freeze and process design freeze, successfully solved the directional blasting technology of high-capacity single battery, and realized the "fail-safe" concept that the whole package of single battery failed and the whole package was intact.
Lin Jian said: "In addition to new energy vehicles, all products that use lithium batteries in our daily life include electric two-wheeled vehicles, power tools, smart homes, drones and garden tools. , need a battery with good thermal management ability to escort. At the same time, it also needs good overall design and correct usage habits. Lithium battery companies, product manufacturers and consumers work together to ensure the safety of lithium battery products. "