This month, Tesla's Shanghai Jinqiao Super Charging Station, a Tesla Model S charging fire accident occurred, and a Tesla Model S lying next to the gun also caught fire, causing two Tesla Model S to be destroyed. . There were no casualties at the scene, but this was the first car spontaneous combustion incident in Tesla in 2017. At that time, the charging station management personnel alarmed and evacuated other charged vehicles in the station for the first time, thus avoiding the further expansion of accident losses. Fortunately, no casualties were caused. For the cause of the accident, Tesla announced in the latest announcement that the fire was caused by "voltage instability" and that the part of the car that was fired was partially charged in the morning. Tesla explained that the unstable voltage caused the Sensor of the charger's "high-voltage junction box" to malfunction, causing the charging to stop. The voltage instability may be due to the expansion of the charging station, the number of charging piles increased from six to twelve, and the additional six charging piles caused the voltage of the existing six charging piles to be unstable. Currently, Tesla said it will investigate the cause of the accident more deeply. The Tesla explosion occurred before the fire, which was mainly caused by two reasons: 1. Most of them are caused by car body collision or smashing battery pack. For this reason, Tesla also installed a three-layer chassis protection plate on Model S. The outer layer is a hollow aluminum crossbar that allows hard objects to be transferred to areas outside the battery pack; the second layer is a titanium alloy plate at the front of the chassis that acts to crush the obstacles under the chassis; the third layer is The aluminum plate, the ductility of aluminum is not easily scratched by sharp obstacles. 2. The current is unstable. When the Tesla user in California was charging at home in November 2013, the line was on fire due to excessive current. With an urgent software update, Tesla achieves adjustable currents to accommodate different charging environments. It is understood that the super charging station is one of Tesla's most proud technologies. Users can fill half the mileage in 20 minutes and fully filled in about 75 minutes. However, the instantaneous power of about 120 kW is brought about, and the stability of the surrounding power grid and even the charging device itself is very high in the case of high energy input. Although it is known that current instability is an important cause of Tesla's fire, Tesla apparently failed to solve this problem completely. Just in January last year, a Norwegian Model S was also on the side of a “temporary super charging stationâ€. Self-ignited. Gear sensor has been widely used in the automotive and industrial field, which is important to the measurement of velocity, angel, angular velocity, direction of rotation. Gear Sensor,Custom Gear Sensor,Gear Sensor 3 Pins,Good Gear Sensor Yuheng Optics Co., Ltd.(Changchun) , https://www.yhencoder.com