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Recently, many dolphin owners posted a video on Weibo saying that there are air-conditioned vents "spraying powder" in the process of using dolphin vehicles. According to the video released by car owners, most car owners use duct tape to seal the air conditioning outlet and then turn on the air conditioner to do the test. from the video, you can see a lot of white powder adhering to the tape.

According to netizens who know about Chedi's circle of friends, their vehicles have been "abnormally dusting with air conditioning" for several months. I thought it was caused by the air conditioner filter. It was later found that it was the white powder blown out of the air outlet of the air conditioner. Then contacted the 4S store, after-sales for this phenomenon said: evaporator failure needs to be replaced. For the reason for the formation of "air conditioning abnormal powder injection", the car owner said: "as the evaporator is responsible for cooling, water droplets are formed after cooling." However, the water droplets cannot be dried and discharged inside the evaporator, causing the outer skin of the evaporator to fall off and blow into the car. "

In addition, netizens who understand the circle of car friends put forward a solution in an online post, saying: you can first use something similar to a mask to cover the air outlet of the air conditioner to prevent dust from blowing out. At the same time, it also said: some car owners reported that there was an abnormal start-up noise of the air conditioner and the problem of spraying powder again after the evaporator was replaced.

It is worth noting that after the BYD dolphin was exposed to the incident of powder spraying, BYD Yuan Puls was also exposed to the same problem.

As for what the powder blown by the vehicle is, some professionals have pointed out that the powder is aluminum powder. It said: basically it can be judged that there is something wrong with the evaporation box, and the powder blown out is not dust, but aluminum powder, which is caused by the oxidation on the surface of the evaporation box.

It is understood that aluminum powder, commonly known as "silver powder", that is, silver metal pigment, pure aluminum foil with a small amount of lubricant, crushed into scale powder, and then polished. Inhaling a small amount of aluminum powder every day can lead to delayed metabolic excretion and may cause pneumoconiosis, and large amounts of aluminum powder can be deposited in the lungs, which can lead to uncomfortable symptoms in the lungs, such as coughing and expectoration. In addition, there may be symptoms of dyspnea, with the aggravation of the disease, there may be a decline in respiratory function, or even cause respiratory failure, so inhaling a small amount of aluminum powder every day is more harmful to the body.

With the escalation of the incident, BYD officials also responded: "some air-conditioning ducts are oxidized, which can be eliminated through air-conditioning system cleaning, and car owners with problems can go to the store for free." In addition, in response to the question of "what is the blown debris and whether it is harmful to health", BYD responded that it had received feedback and actively worked out a solution.

It is understood that BYD Dolphin is the first model of BYD Ocean car Department, which was officially launched at last year's Chengdu Auto Show. The new car is positioned as a pure electric city trot of 100000 yuan, with a total of four models, with a price range of 9.38-121800 yuan. In terms of power, the ordinary version of the model will be equipped with permanent magnet synchronous motor, maximum power 70kW, peak torque 180N ·m. The high-power version is equipped with a permanent magnet synchronous motor (PMSM) with maximum power 130kW and peak torque of 290Nm. In terms of battery, equipped with lithium iron phosphate blade battery, the NEDC has a range of 301km, 401km and 405km respectively.

As BYD's entry-level pure electric car, it has been sought after by the market as soon as it is listed, and its monthly sales volume has quickly exceeded 10,000, which is a hot-selling model of BYD. According to relevant data, September sales of dolphin models in 2022 were 24956, accounting for 12.42% of BYD's sales and ranking first among small car sales.

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