Working principle of battery fire tester:
The main purpose of battery fire tester is to simulate the performance of battery in extreme environment, especially in fire condition, to verify its safety. Its working principle usually includes the following steps:
Heating system:
The tester will simulate flame or high temperature environment through heating element, usually in a closed container. The heating process can simulate the high temperature conditions in fire condition, and the temperature can reach hundreds of degrees.
Test environment control:
The temperature, air pressure and other environmental conditions inside the fire tester will be precisely controlled and monitored to ensure that the battery is tested in a standardized environment.
Battery installation and heating:
The tested battery will be fixed in the test area, and the equipment will provide a gradually warming environment through the heating system. The temperature changes inside the battery, the appearance damage, and whether short circuit, fire or explosion occur will be recorded.
Temperature and pressure monitoring:
During the test, the tester will monitor the surface temperature, internal temperature and ambient temperature of the battery in real time. At the same time, the pressure sensor will also be used to monitor whether the battery leaks or ruptures due to thermal expansion.
Data collection and analysis:
During the test, the battery fire test machine will record the temperature change, pressure change, fire occurrence and other data of the battery in real time by connecting to a data logger or computer system, and analyze it after the test to evaluate the performance of the battery under extreme conditions. How to ensure safety:
The safety of the battery fire test machine is usually ensured by the following aspects:
Equipment protection design:
The test machine itself usually has a firewall, high temperature resistant materials and isolation design to prevent damage to the equipment when the battery explodes or leaks during the test.
The shell of the test machine will adopt fireproof, explosion-proof and high temperature tolerance design to ensure that the equipment itself can withstand high temperature and fire environment.
Temperature control system:
The equipment is equipped with a precise temperature control system to ensure that the temperature is stable and will not be too high to cause equipment failure. In addition, when the temperature reaches the set threshold, the equipment will automatically shut down or enter the protection mode to prevent further danger.
Automatic fire extinguishing system:
Some high-end battery fire test machines are equipped with automatic fire extinguishing systems. When fire or smoke is detected, the fire extinguishing device can be automatically triggered to reduce accidents.
Gas monitoring:
During the fire process, harmful gases may be generated (such as toxic gases when the battery explodes). The fire test machine is usually equipped with a gas detection device to monitor the gas concentration in the surrounding environment in real time to ensure the safety of the test area.
Emergency channel and remote monitoring:
The test machine is generally equipped with an emergency stop button and has clear emergency measures. At the same time, the test machine can be monitored by a remote monitoring system, and the tester can monitor the test process in real time from a safe distance.
High temperature and pressure release device:
The test machine is usually equipped with an automatic pressure release device. When the internal pressure reaches the safety threshold, it will automatically release the pressure to prevent explosions or other catastrophic consequences during the test.
Safety regulations and operation training:
Before conducting a battery fire test, operators usually receive strict training, familiarize themselves with the equipment operating specifications, and ensure that they operate according to the safety process.
Through these designs and measures, the battery fire test machine can maximize the safety of the test process and reduce the risk of equipment failure and personal injury.
