Recently, the news about Tesla Model 3 on the Internet began to ferment, the cause of the matter is based on the netizens broke the news, driving a Tesla Model 3 on the highway, suddenly the vehicle lost power.
Tesla power is lost
According to the owner's self-description, the vehicle is delivered before New Year's Day, in the process of use, there will be an electric current sound for no reason, and after locking the car, it will run, the car will also make a rumbling sound, reopen the door in the closing sound will disappear, usually think these are small problems, and do not care.
According to the owner of the reveal, when the vehicle loses power, the vehicle maintains a speed of 100km/h at a high speed normal driving, everything without warning, suddenly the screen shows that the vehicle can not continue to drive, please stop immediately, the owner of the car deeply stepped on the accelerator pedal but the car did not respond, the owner quickly opened the double flash, forced to park the vehicle to the emergency lane, because the speed has been used up, the body and part of the body can only be parked outside the emergency lane.
After this happened, the owner immediately contacted Tesla sales and staff, but was told that there was no such situation, it is recommended to contact the after-sales, but the after-sales said that there is no solution, can only let the owner call the trailer; at present, the car has been pulled to the Tesla after-sales processing center, according to Tesla's preliminary communication and fault code query, the main reason for the failure comes from the vehicle's inverter.
The reason for the loss of power
At the same time, on the afternoon of April 7, Tesla filed a recall plan with the State Administration for Market Regulations in accordance with the requirements of the Regulations on the Administration of the Recall of Defective Automobile Products and the Implementation Measures for the Administration of the Recall of Defective Automobile Products.
Starting April 7, Tesla will recall some imported and domestically produced Model 3 electric vehicles with production dates from January 11, 2019 to January 25, 2022. A total of 127,785 vehicles were recalled; according to Tesla's official recall, the recalled vehicle rear motor inverter, power semiconductor components may have slight manufacturing differences, it is likely that after some vehicles are in use for a period of time, component manufacturing differences lead to inverter failure, resulting in inverters can not normally control the current conversion inside the car, in the event of failure, especially when the vehicle is in a running state, the vehicle power function will be lost.
In the structure of electric vehicles, many people directly identify the controller as "inverter", but the controller also contains inverters, etc.; the author has previously done relevant content about "energy recovery", in electric vehicles, because the power battery outputs DIRECT CURRENT, and the motors of electric vehicles use AC motors, therefore, when the battery outputs electrical energy to the motor, it is necessary to convert the original DC to alternating current, and the conversion device is the inverter; in the same way, when the motor is passively dragged, open into the power generation state, Whether it is a DC motor or an AC motor, when entering the power generation state, the electrical energy generated by the motor is AC, and the generated AC power wants to be recharged back to the inside of the battery, and it is also necessary to rectify the AC current into direct current, which is a key step that also requires an inverter to operate. For more details, you can click on the link below to jump to learn more. (Link to the auto farm article)
Through the foregoing, I believe that many consumers can already understand the importance of the power module in the inverter and the electric drive electronic control system, the entire system needs to carry the current conversion and output function of the electric vehicle, and needs to ensure better product quality in order to control the safety of the owner when driving, and after the owner of this situation, I hope that Tesla can quickly solve the hidden dangers of product quality through the recall, so that more consumers can rest assured of Tesla.
Write at the end
Electric vehicles in the entire internal power system, different from the traditional fuel vehicle, a kind of transmission of electrical energy and internal energy conversion, from the power battery chemical reaction to generate current, electric energy needs to be converted from the electric drive system into kinetic energy, and then driven by the motor wheels, to complete the vehicle driving process, compared to the kinetic energy output of fuel vehicles is more complex, so it is also necessary for enterprises to be more refined in each link, in order to avoid such accidents; the author also hopes, More companies can pay attention to the quality control of their own products in the Tesla incident, and give users a more comprehensive guarantee in the era of electrification to avoid dangerous accidents.