Analysis of inconsistent standards for quick charging standards for electric vehicles

At present, the fast charging standard for electric cars, there are two.Their quick charge and charger standards don't agree with each other.

One is the Japanese standards.Founded in March 2010 CHAdeMO association is the standard setters, CHAdeMO way fast charging can supply vehicles with maximum power output of 50 kw of power directly.Communication between the vehicle and quick charger adopts LAN standards "CAN", that is, this way of charge in addition to the data line also adopt CAN bus as the communication interface.

CAN because of superior resistance to noise and error detection ability is strong, and communication security and high reliability, as on-board controller dispersible network technology is widely used.For fast charging electric cars, for the safety in the first place, the on-board equipment of reason in the gateway and other separation, to make it able to charge on the side of the control unit to realize one-to-one communication, to ensure the charge signal is correct.

According to the Japanese standard, using high voltage direct current (dc) directly to the carThe lithium batteryIt only takes about 30 minutes, can give lithiumThe batteryWith 80% of capacity.And the ordinary charger to charge to single-phase 200 v power charge also need eight hours.

In Japan to CHAdeMO became the world standard, in October 2011, seven European and American car companies has announced it will according to the international society of automotive engineers cooperate with ieee standards, production can use "integrated connector" electric car to market.Has this kind of "integrated connector" is adopted widely in European and American ordinary charger and quick charger integration solution, compared with the Japanese standards there are four different:

1, integrated connector in the fast charging, maximum 90 kw dc power supply, the output power is bigger than Japan's.

2, between the vehicle and quick charger adopts power line communications (PLC) standards for communication, can be PLC programmable logic controller, it USES a programmable memory, the executing logic operation, sequence control, timing, counting and arithmetic operations such as instruction.It can be directly connected to the ac power grid, through the above a series of process, "integrated connector in the gateway and other separation of on-board equipment.

3, quick charger interface, Japan and Europe and the United States use their countries' common standards respectively.Japan and the European and American standards are not the same.

4, Europe and the United States standard is a kind of intelligent battery charger, to concentrate common charging and fast charging in a charger, and Japanese standards, except a car equipped with quick charger also equipped with an ordinary charger.

The page contains the contents of the machine translation.