Emergency recall of 100,000 electric cars! Is DC charging necessary?

Recently, Musk's news has been hot. But in contrast to the heat of his social accounts, his factory in China has suffered a major accident.

On May 16, Tesla filed a recall of 100,000 electric vehicles with the State Administration of Market Supervision and Administration of China, according to information on the official website of the State Administration of Market Supervision and Administration of China.

The reason for this is that there are serious defects and safety hazards when charging the product

In some vehicles under recall, the central processor of the infotainment system may not be sufficiently cooled down when preparing for DC charging or during DC charging, resulting in slowdown of the central processor and delay in the operation of the central touch screen, and in severe cases the central processor may reboot, resulting in the display not being displayed.

In simple terms, this means that a number of essential functions for driving, such as the reversing camera, the setting of the windscreen (defrost, defog and wiper) function, the driving gear display and indicator lights, will not work properly, increasing the risk of the vehicle being involved in a collision in extreme cases. A special point to mention here is that the defect occurs during DC charging.

So you don't need DC charging?

Unfortunately, at this stage we need DC charging, especially fast charging.I would like to start by explaining the current output mode of the charging post.



Fast charging piles are mostly DC charging




If you look around a little, you will find a number of charging posts on the road. Currently, AC charging is mainly used. The principle is to convert AC to DC via an on-board rectifier, which is then fed into the battery. Essentially, the battery is charged with DC power.

Therefore, DC charging, which skips the rectifier, reduces the current conversion and charges the battery directly and at a faster rate, is the natural choice. The charging stations on the highway are DC fast charging stations that can quickly relieve the pressure of traffic due to charging.




High load on the power grid. DC overcharging accelerates battery depletion



The combination of these inferences shows that DC fast charging is necessary, which makes it understandable why Tesla is recalling products with defective DC charging. However, the disadvantages of DC charging are also obvious, which also leads to the lack of large-scale popularization of DC fast charging.


A. The DC output from the DC charging pile is often hundreds of AMPS, which may affect the service life of the battery.


B. On the other hand, with the energy crisis, the number of electric vehicles is steadily increasing. In the case of DC high power charging at the same time, it is a huge test for the grid and the power company may trigger a power outage if it is not prepared.


C. In terms of battery capacity, current electric vehicles are not suitable for long-distance driving, plus as a means of getting around within the city, so many families will choose to just charge slowly at work or at home at night, which is why AC charging posts are widely promoted.



Increasing demand for electricity for travel


With the current increase in electric vehicles for domestic use, the number of AC charging posts has also increased. In this case, there will be a great need for inverters for the grid. It can effectively increase grid stability and reduce maintenance costs. A good inverter not only adapts to different current environments, but also intelligently monitors and manages the distribution of power.

Therefore, as a professional manufacturer in the photovoltaic industry, SUNPROPOWER recommends here this intelligent inverter - the SP12KH3.



The SP12KH3:




Maximum input power 15.6KW. MPPT range 125V-850V. Maximum output power 13.2KV. It is compatible with a wide range of material batteries. High safety and protection with anti-backflow function and reverse battery connection protection. It is easy to operate. An intelligent energy management system is built in. It enables power dispatch and distributed virtual power station management.


Stylish appearance and light weight. Smart operation with touch screen. Low noise operation. IP65 dust and water resistant. Wall-mounted design for space saving. Cloud-based monitoring allows you to keep track of the status of the grid using your mobile phone or PC. It is very effective as a means for power stations to monitor the grid.


For the commercial grid, when setting up public electricity facilities (e.g. charging posts in car parks) and when shops use electricity, it is able to monitor power distribution projects, quickly troubleshoot faults and reduce customer losses. In addition, it can be equipped with 5/10kw capacity lithium iron phosphate batteries for energy storage according to user needs.


The expanding market for electric vehicles has been accompanied by an increased demand on the grid. At the moment, electricity is expensive and unstable in many countries, and power outages are frequent. Delaying and reducing the risks associated with inadequate power supply is necessary. Then make sure you use reliable products when purchasing equipment.






Today is the Grain buds ( Chinese is 小满，Xiao man ) of the Chinese 24 solar terms, which means that wheat is already grouting at this time of year. In China, "小满" also refers to a person's state of small achievements. I wish you little success in your work.


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