【Zhongke Zhonghuan】Focusing on electric vehicle safety, Zhongke Zhonghuan has been working hard for many years before starting again
Release Date:2022-04-01 Source: View count:565
Focusing on electric vehicle safety, the country is once again increasing its efforts!
Recently, the Ministry of Industry and Information Technology issued the "2022 Automotive Standardization Work Points". The most important aspect is to initiate the revision of safety standards for electric vehicle power batteries, further improving the level of thermal runaway alarm and safety protection for power batteries.
This is another revision of relevant standards for the safety of power batteries in the field of new energy vehicles by the Ministry of Industry and Information Technology,following the official implementation of the"Three Strong Standards"in 2021.
This means that in the near future,domestic electric vehicles(including passenger cars and commercial vehicles)may be equipped with power battery thermal runaway detection and fire extinguishing devices.
According to data from the China Association of Automobile Manufacturers,the number of new energy vehicles in China reached 7.84 million in 2021.Along with the increase in the number of new energy vehicles,there is a frequent occurrence of fire accidents.
It is reported that there were about 3000 new energy vehicle fire accidents nationwide in 2021.Since 2022,there have been multiple incidents of electric vehicle fires across the country.
On March 17,2022,a truck caught fire while charging at the Shuangyong Charging Station on Binjiang Road in Haikou City.The fire caused one side of the door of a new energy taxi next to it to be smoked black.
On February 21,2022,a new energy car caught fire in Taoli Wenyuan Community,Sixian County,Suzhou,Anhui Province.After receiving the alarm,the local fire department immediately rushed to the scene to put out the fire.
On February 20, 2022, at the Guolian Taxi Comprehensive Service Station in an underground garage near Fei'e Road, Liunan District, Liuzhou City, Guangxi, a new energy taxi parked on a charging station suddenly emitted thick smoke and then caught fire.
According to accident reports from various regions, the biggest cause of fires in new energy vehicles is the power battery.
At present, China's new energy vehicles are mainly equipped with lithium iron phosphate batteries and ternary lithium batteries. Due to its high energy, high power, and strong low-temperature resistance, ternary lithium batteries can improve the driving range of vehicles, and their usage rate is much higher than that of lithium iron phosphate batteries.
Even so, it cannot conceal the shortcomings of lithium batteries. It has poor safety performance and poses a risk of explosion. After a vehicle collision, it is highly likely to cause a battery short circuit, which can lead to spontaneous combustion in a short period of time; Lithium batteries generate a large amount of heat energy during operation, and if the heat accumulates too much and dissipates slowly, it is also prone to explosion; When charging new energy vehicles, it is common for the internal current of the battery to be too high, too heavy, or too hot. If the BMS system is not well managed, it can also easily lead to fires.
It is inevitable for the power battery of new energy vehicles to experience thermal runaway, and timely detection of thermal runaway and thermal spread becomes crucial. This is also the focus of the Ministry of Industry and Information Technology's proposal to improve the level of thermal runaway alarm and safety protection for power batteries.
To solve the spontaneous combustion accidents caused by thermal runaway of power batteries in new energy vehicles, Zhongke Zhonghuan and the Key Laboratory have formed a technical research team. Through a large number of lithium battery thermal runaway tests, rich process data has been accumulated. Based on this, a lithium electric thermal runaway model and thermal runaway determination algorithm have been established, and the safety protection level of power battery thermal runaway has been improved through the following core technologies:
Accurate prediction and warning technology for lithium-ion battery fires
Based on the battery thermal runaway model and a series of experimental tests, Zhongke Zhonghuan has developed multi parameter coupled battery fire warning technology and equipment products, achieving early perception, intelligent judgment, and three-level warning functions for lithium-ion battery system fires.
Temperature control technology for lithium-ion batteries
Based on the incubation mechanism model of lithium-ion battery fires and multi-level warning strategies, targeted cooling measures are taken to prevent the occurrence of thermal runaway and suppress its spread after it occurs.
High efficiency fire extinguishing and anti re ignition technology for lithium-ion battery fires
Through theoretical analysis and extensive experimental research, clean and efficient fire extinguishing agents have been selected, and FK5112 fire prevention and control technology has been adopted to break through traditional designs and solve problems such as large consumables, difficult storage and transportation, and easy reignition; Using secondary (multiple) fire extinguishing techniques to quickly extinguish the unique secondary jet fire and reignition phenomena of power batteries.
Zhongke Zhonghuan has established good strategic cooperation relationships with major domestic vehicle manufacturers, battery factories, research institutes, and local public transportation companies. Relying on advanced technology, reliable quality, and professional services, it improves the operational safety and management safety of vehicles, and provides safe, green, and comfortable travel experiences for the citizens of Guangzhou.
Focusing on electric vehicle safety, the country is once again increasing its efforts!
Recently, the Ministry of Industry and Information Technology issued the "2022 Automotive Standardization Work Points". The most important aspect is to initiate the revision of safety standards for electric vehicle power batteries, further improving the level of thermal runaway alarm and safety protection for power batteries.
This is another revision of relevant standards for the safety of power batteries in the field of new energy vehicles by the Ministry of Industry and Information Technology,following the official implementation of the"Three Strong Standards"in 2021.
This means that in the near future,domestic electric vehicles(including passenger cars and commercial vehicles)may be equipped with power battery thermal runaway detection and fire extinguishing devices.
According to data from the China Association of Automobile Manufacturers,the number of new energy vehicles in China reached 7.84 million in 2021.Along with the increase in the number of new energy vehicles,there is a frequent occurrence of fire accidents.
It is reported that there were about 3000 new energy vehicle fire accidents nationwide in 2021.Since 2022,there have been multiple incidents of electric vehicle fires across the country.
On March 17,2022,a truck caught fire while charging at the Shuangyong Charging Station on Binjiang Road in Haikou City.The fire caused one side of the door of a new energy taxi next to it to be smoked black.
On February 21,2022,a new energy car caught fire in Taoli Wenyuan Community,Sixian County,Suzhou,Anhui Province.After receiving the alarm,the local fire department immediately rushed to the scene to put out the fire.
On February 20, 2022, at the Guolian Taxi Comprehensive Service Station in an underground garage near Fei'e Road, Liunan District, Liuzhou City, Guangxi, a new energy taxi parked on a charging station suddenly emitted thick smoke and then caught fire.
According to accident reports from various regions, the biggest cause of fires in new energy vehicles is the power battery.
At present, China's new energy vehicles are mainly equipped with lithium iron phosphate batteries and ternary lithium batteries. Due to its high energy, high power, and strong low-temperature resistance, ternary lithium batteries can improve the driving range of vehicles, and their usage rate is much higher than that of lithium iron phosphate batteries.
Even so, it cannot conceal the shortcomings of lithium batteries. It has poor safety performance and poses a risk of explosion. After a vehicle collision, it is highly likely to cause a battery short circuit, which can lead to spontaneous combustion in a short period of time; Lithium batteries generate a large amount of heat energy during operation, and if the heat accumulates too much and dissipates slowly, it is also prone to explosion; When charging new energy vehicles, it is common for the internal current of the battery to be too high, too heavy, or too hot. If the BMS system is not well managed, it can also easily lead to fires.
It is inevitable for the power battery of new energy vehicles to experience thermal runaway, and timely detection of thermal runaway and thermal spread becomes crucial. This is also the focus of the Ministry of Industry and Information Technology's proposal to improve the level of thermal runaway alarm and safety protection for power batteries.
To solve the spontaneous combustion accidents caused by thermal runaway of power batteries in new energy vehicles, Zhongke Zhonghuan and the Key Laboratory have formed a technical research team. Through a large number of lithium battery thermal runaway tests, rich process data has been accumulated. Based on this, a lithium electric thermal runaway model and thermal runaway determination algorithm have been established, and the safety protection level of power battery thermal runaway has been improved through the following core technologies:
Accurate prediction and warning technology for lithium-ion battery fires
Based on the battery thermal runaway model and a series of experimental tests, Zhongke Zhonghuan has developed multi parameter coupled battery fire warning technology and equipment products, achieving early perception, intelligent judgment, and three-level warning functions for lithium-ion battery system fires.
Temperature control technology for lithium-ion batteries
Based on the incubation mechanism model of lithium-ion battery fires and multi-level warning strategies, targeted cooling measures are taken to prevent the occurrence of thermal runaway and suppress its spread after it occurs.
High efficiency fire extinguishing and anti re ignition technology for lithium-ion battery fires
Through theoretical analysis and extensive experimental research, clean and efficient fire extinguishing agents have been selected, and FK5112 fire prevention and control technology has been adopted to break through traditional designs and solve problems such as large consumables, difficult storage and transportation, and easy reignition; Using secondary (multiple) fire extinguishing techniques to quickly extinguish the unique secondary jet fire and reignition phenomena of power batteries.
Zhongke Zhonghuan has established good strategic cooperation relationships with major domestic vehicle manufacturers, battery factories, research institutes, and local public transportation companies. Relying on advanced technology, reliable quality, and professional services, it improves the operational safety and management safety of vehicles, and provides safe, green, and comfortable travel experiences for the citizens of Guangzhou.
