With the popularization and development of electric passenger car, the safety of lithium-ion power batteries has attracted much attention electric passenger car. Fire is one of the important issues of the safety of lithium ion batteries. Therefore, the design and application of fire prevention and control devices are particularly important. This article will deeply discuss the general technical requirements of electric passenger car lithium ion power battery fire prevention and control device, including temperature monitoring, short circuit protection, overcharge protection, overdischarge protection, battery management system, etc, to help readers have a more comprehensive understanding of how to ensure the safety of electric passenger car lithium ion power batteries.

1. Temperature Monitoring

the fire prevention and control device should have the function of temperature monitoring, which can monitor the temperature change of the battery pack in real time. Once the temperature abnormality is found, timely alarm and take corresponding measures to avoid fire caused by excessive temperature.

2. Short circuit protection

the fire prevention and control device should have the function of short circuit protection, which can detect the short circuit situation in the battery pack in time and cut off the circuit quickly to prevent overheating and fire risk caused by short circuit.

3. Overcharge protection

the fire prevention and control device should have overcharge protection function, which can monitor the charging status of the battery pack. Once overcharge is detected, stop charging or adjust the charging voltage in time to avoid fire caused by overcharge of the battery.

4. Over-release protection

the fire prevention and control device should have the function of over-discharge protection, which can monitor the discharge status of the battery pack. Once the over-discharge situation is detected, stop the discharge or adjust the discharge voltage in time, avoid damage and fire risks caused by battery overdischarge.

5. Battery management system

the fire prevention and control device should be equipped with a complete battery management system, which can monitor the voltage, current, temperature and other parameters of the battery pack, realize the overall management and control of the battery pack, and ensure the safe operation of the battery pack.

6. Fast power off

the fire prevention and control device should have the function of fast power off. Once the fire risk is found, it can quickly cut off the connection between the battery pack and the external circuit to prevent the spread of fire and ensure the safety of passengers and vehicles.

7. Waterproof and dustproof

the fire prevention and control device should have waterproof and dustproof function, be able to work normally under harsh environmental conditions, and improve the stability and reliability of the device.

8. Automatic alarm

the fire prevention and control device should be able to alarm automatically. Once the fire risk or abnormal battery condition is detected, an alarm signal should be sent out in time to remind the vehicle drivers and passengers to take corresponding measures.

Electric passenger car lithium ion power battery the general technical requirements of fire prevention and control devices include temperature monitoring, short circuit protection, overcharge protection, overdischarge protection, battery management system and other aspects, these requirements are essential to ensure the safety of electric passenger car lithium ion power batteries.