Views:7 Author:Site Editor Publish Time: 2020-07-27 Origin:Site
In the current context of energy saving and emission reduction, an important part of the sustainable economy-electric vehicles have gradually entered our lives. However, as an industry still in development, new energy vehicles still have their own shortcomings, and auto spontaneous combustion accidents that are frequently reported are one of them. The concerns of the little friends about safety have also hindered the development of the electric vehicle market to a certain extent.
What is Honeywell battery thermal runaway warning sensor
Monitor in advance to minimize losses
ntelligent mode switching, effectively reduce energy consumption
According to statistics, in 2018 alone, as many as 40 spontaneous combustion incidents occurred in electric vehicles, and at least 20 spontaneous combustion incidents occurred in the first eight months of 2019. Battery thermal runaway is one of the common faults of power batteries, which often leads to fire accidents. With the gradual popularization and development of electric vehicles, passenger safety is of paramount importance. As an expert in the field of safety systems, Honeywell has its own coup-Honeywell battery thermal runaway warning sensor.
The overall thermal runaway of the power battery pack is often caused by the thermal runaway of the single cell. If the thermal runaway of the single cell can be detected, it will win precious time for passengers to evacuate-this is the Honeywell battery thermal runaway warning The core idea of the sensor lies. At the same time, the early intervention of the BMS (Battery Management System, battery management system) can also take many measures to prevent the thermal runaway of the single battery cell caused by the overall battery pack thermal runaway, to avoid causing major personnel and property losses. Thanks to Honeywell's powerful R&D capabilities, we have studied the mechanism of battery thermal runaway, and the gas (carbon monoxide/hydrogen/hydrogen fluoride/TVOC), pressure, suspended particles, temperature and other physical quantities after thermal runaway of the battery Collected and verified.
While continuously monitoring the battery status, the Honeywell battery pack thermal runaway early warning program also takes into account the need to save energy. When the vehicle is running and charged, our products will work at full power, and changes in air pressure and suspended particles in the battery pack will be monitored in real time. In the parking state, in order to save limited power, the BMS will be in a sleep state, and our products will also enter the ultra-low power consumption state, but the detection is still in progress, acting as a "sentinel" to monitor the relevant changes of the battery pack, After discovering the changes of relevant physical parameters, the sensor re-enters the full power state to detect the condition in the battery pack, and wakes up the BMS coupling voltage and temperature signals for review and verification.
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