We know that the safety threat of electric vehicles is not only the risk that may be caused by the defects of intelligent algorithm and functional design. One of the most important reasons for people to fear the accident of electric vehicles is the threat and injury caused by the explosion of the battery. too serious. For example, when the vehicle is in a static state, problems such as battery overcharge, short circuit, and liquid leakage caused by imperfect battery system management, incompatible communication, and communication barriers with charging equipment cannot be monitored and alarmed in advance, resulting in thermal runaway, spontaneous combustion, and fire. Such situations require the management of battery safety through a battery management system (BMS).
The battery management system uses the CAN communication protocol and real-time dual ECU multi-level monitoring, which makes the communication between the charging equipment and the battery management system smooth and coordinated to ensure the safety of the battery.
During the charging process, if the three links of battery cell, BMS, and sensor do not cooperate well, spontaneous combustion may occur. For the dynamic temperature change of battery charging and discharging, first of all, the pack design of the battery itself is very important, and it is necessary to ensure the heat dissipation and reliability of the battery, and secondly, the constant temperature thermal management technology of the battery pack of the electric vehicle can control the temperature of the battery cell more stably at a high efficiency, safe temperature range.