【Zhongke Zhonghuan】Design and Application of Fire Prevention and Control for Lithium ion Batteries
Release Date:2022-08-07 Source: View count:548
On August 4th, the China International Power Battery Safety Design and Manufacturing Forum with the theme of "Creating Safer Power Batteries" opened in Suzhou. The conference conducted technical exchanges on topics such as battery safety design and manufacturing from different perspectives of the power battery industry chain, and the application of new materials and technologies.
Zhu Xingguo, Technical Director of Zhongke Zhonghuan, gave a special report on "Lithium ion Battery Thermal Loss Detection and Efficient Fire Suppression Plan" at the forum, sharing Zhongke Zhonghuan's concept in the design and application of lithium-ion battery fire prevention and control.
In recent years, with the rapid increase in the market for pure electric vehicles and the mass application of higher energy density lithium-ion power batteries, electric vehicle self ignition accidents caused by power batteries have occurred intensively. The safety issue of power batteries is the biggest obstacle to the further development and popularization of electric vehicles.
The main factors affecting the fire hazard of batteries include battery capacity, battery composition system, battery state of charge, battery structure (with PTC and pressure relief valve installed in the battery), etc. The thermal hazard of batteries is compared using equivalent TNT equivalent, which is nearly half of the TNT specific energy (1282Wh/kg). The analysis of thermal and combustion characteristics is currently the main means of assessing the hazard of batteries.
The data obtained from a large number of thermal runaway tests shows that the battery generates a rapid increase in temperature, produces a large amount of combustible mixture gas, and carries the risk of combustion and explosion during and after thermal runaway.
To this end, Zhongke Zhonghuan adopts the basic methods of early sensing and thermal runaway suppression to cope with battery thermal control. Through various sensors such as temperature, smoke, CO, VOC, etc., real-time collection of internal environmental parameters of the battery box is carried out. Combined with multiple parameter composite judgments and thermal runaway models, three-level pre alarm (reporting) of battery thermal runaway is achieved; Thermal runaway suppression uses fire extinguishing media with cooling capabilities to reduce thermal diffusion and secondary fires caused by thermal spread, thereby solving the core safety problem of thermal runaway.
Anhui Zhongke Zhonghuan Defense Equipment Technology Co., Ltd. is a leading provider of early warning and comprehensive solutions for public safety in the transportation sector in China. Based on a profound understanding and technological accumulation of public safety in the transportation field, the company focuses on two major directions: lithium battery fire safety and information intelligent platform. It has formed a technical research team and continuously introduced years of innovative technological achievements into the application market, effectively improving the safety, reliability, and stability of downstream products.
In the future development path, Zhongke Zhonghuan will continue to focus on industry demand, actively respond to market changes, strengthen technological innovation, create value for customers, and accumulate strength for the industry!
On August 4th, the China International Power Battery Safety Design and Manufacturing Forum with the theme of "Creating Safer Power Batteries" opened in Suzhou. The conference conducted technical exchanges on topics such as battery safety design and manufacturing from different perspectives of the power battery industry chain, and the application of new materials and technologies.
Zhu Xingguo, Technical Director of Zhongke Zhonghuan, gave a special report on "Lithium ion Battery Thermal Loss Detection and Efficient Fire Suppression Plan" at the forum, sharing Zhongke Zhonghuan's concept in the design and application of lithium-ion battery fire prevention and control.
In recent years, with the rapid increase in the market for pure electric vehicles and the mass application of higher energy density lithium-ion power batteries, electric vehicle self ignition accidents caused by power batteries have occurred intensively. The safety issue of power batteries is the biggest obstacle to the further development and popularization of electric vehicles.
The main factors affecting the fire hazard of batteries include battery capacity, battery composition system, battery state of charge, battery structure (with PTC and pressure relief valve installed in the battery), etc. The thermal hazard of batteries is compared using equivalent TNT equivalent, which is nearly half of the TNT specific energy (1282Wh/kg). The analysis of thermal and combustion characteristics is currently the main means of assessing the hazard of batteries.
The data obtained from a large number of thermal runaway tests shows that the battery generates a rapid increase in temperature, produces a large amount of combustible mixture gas, and carries the risk of combustion and explosion during and after thermal runaway.
To this end, Zhongke Zhonghuan adopts the basic methods of early sensing and thermal runaway suppression to cope with battery thermal control. Through various sensors such as temperature, smoke, CO, VOC, etc., real-time collection of internal environmental parameters of the battery box is carried out. Combined with multiple parameter composite judgments and thermal runaway models, three-level pre alarm (reporting) of battery thermal runaway is achieved; Thermal runaway suppression uses fire extinguishing media with cooling capabilities to reduce thermal diffusion and secondary fires caused by thermal spread, thereby solving the core safety problem of thermal runaway.
Anhui Zhongke Zhonghuan Defense Equipment Technology Co., Ltd. is a leading provider of early warning and comprehensive solutions for public safety in the transportation sector in China. Based on a profound understanding and technological accumulation of public safety in the transportation field, the company focuses on two major directions: lithium battery fire safety and information intelligent platform. It has formed a technical research team and continuously introduced years of innovative technological achievements into the application market, effectively improving the safety, reliability, and stability of downstream products.
In the future development path, Zhongke Zhonghuan will continue to focus on industry demand, actively respond to market changes, strengthen technological innovation, create value for customers, and accumulate strength for the industry!
