In recent years, electric vehicle fires have been emerging one after another, especially in the high temperature in summer, electric vehicles are easy to spontaneously ignite and cause fires!
According to the 2021 national fire rescue team alarm reception and fire data released by the Fire Rescue Bureau of the Ministry of emergency management, nearly 18000 fires and 57 deaths caused by the failure of electric bicycles and their batteries were reported nationwide last year. It is reported that 26 electric bicycle fires occurred in Yantai in just half a year this year.
What causes electric vehicle fires to occur so frequently?
The main culprit behind the spontaneous combustion of electric vehicles is the thermal runaway of lithium batteries. The so-called thermal runaway is a chain reaction caused by various incentives. The calorific value can raise the battery temperature by thousands of degrees, causing spontaneous combustion. Electric vehicle batteries are prone to thermal runaway due to overcharge, puncture, high temperature, circuit short circuit, external force damage and other reasons.
How to effectively prevent thermal runaway
The inducements of heat out of control are diverse. Therefore, multiple preventive measures should be taken to prevent the occurrence of heat out of control.
The main inducement of thermal runaway is "heat". To effectively prevent thermal runaway, it is necessary to ensure that the battery has been operating at a reasonable temperature. However, in the high temperature in summer, "heat" is unavoidable, so we need to start with the battery, so as to make the lithium-ion battery have better heat resistance and heat dissipation performance.
First of all, consumers need to pay attention to the relevant characteristics of lithium batteries when buying electric vehicles, and whether the internal materials of battery cells have good temperature resistance and heat dissipation performance. Secondly, whether the connector connected with the battery inside the electric vehicle has high temperature resistance performance, we should ensure that the connector will not soften and fail due to high temperature, so as to ensure that the circuit is unblocked and avoid the occurrence of short circuit.
As a professional electric vehicle connector expert, Amass has 20 years of research and development experience in lithium electric vehicle connectors, and provides current carrying connection solutions for electric vehicle enterprises such as Xinri, Emma, Yadi, etc. The connector of Ames high temperature resistant electric vehicle adopts PBT with good heat resistance, weather resistance and electrical characteristics. The melting point of PBT insulating plastic shell is 225-235 ℃.
Amass Lab
The connectors of high-temperature electric vehicles have passed the flame retardant grade test, and the flame retardant performance reaches V0 flame retardant, which can also meet the ambient temperature of -20 ℃ ~120 ℃. For use within the above ambient temperature range, the main shell of the electric vehicle connector will not soften due to high temperature, causing a short circuit.
In addition to the selection of batteries and their components, the quality of electric vehicle chargers, long charging time, illegal modification of electric vehicles, etc. are the key to improve the safety performance of electric vehicle lithium batteries.
Post time: Sep-05-2022