Keyword search: battery plant ,  lithium battery factory ,  power bank works ,  lifepo4 battery mill ,  Pallet Trucks LiFePO4 Battery,  LiFePO4 Pallet Trucks Battery,  Lithium Pallet Trucks Battery, 

As an industry insider, it is often asked why electric vehicles cannot be charged on some public charging stations, especially after a certain car company organized an electric vehicle operation on the Beijing Shanghai Expressway a year ago. It seems that more people have begun to pay attention to this issue. Many people will mention why electric vehicles still cannot be charged since there are national standards for charging. Answering this question is actually very complex because it involves many aspects such as the government, car manufacturers, charging equipment manufacturers, operators, etc., and this problem is also one of the many problems encountered in the promotion process of electric vehicles.

1、 The reason why it cannot be charged

In addition to charging equipment or electric vehicle malfunctions, the reasons why electric vehicles cannot charge under normal circumstances can be explained from two aspects: charging interface and communication protocol:

1. In terms of charging interfaces, due to the existence of the three major charging interface standards in the United States, Europe, and China globally, various car companies have also designed different charging interfaces that are suitable for their respective technical routes, such as the European Combo interface, the Japanese CHAdeMO interface, Tesla's charging interface, some CCS interfaces used by American and German brands, and China's GB/T20234 interface. This means that currently, foreign cars cannot connect with domestic charging stations from a hardware interface perspective. For example, Tesla can only ensure the promotion of models in the Chinese market by building its own charging stations.

For China's national standard GB/T20234, the standards for AC and DC interfaces are specified. The AC interface adopts a seven pin design, while the DC interface adopts a nine pin design. Domestic car companies all follow this standard for design. However, in the early days, some car companies considered the extended battery life, and some car models did not design DC charging interfaces. It is normal for some car owners to encounter DC piles that cannot be charged at public charging stations.

For users, it is necessary to first clarify whether their car's charging interface is domestic or foreign, and whether it can be charged through AC or DC.

2. In terms of communication protocols, the current difference in charging protocols is the main reason for the inability to charge. To explain this issue, it is necessary to have an understanding of the basic principles and processes of AC charging and DC charging.

(1) The process of AC charging involves the transmission of AC power through the charging station, vehicle charger, and power battery. According to national standards, there is no communication relationship between the charging station and the entire vehicle. Simply put, the AC charging station is a slightly higher power socket, and there is no connection between the charging station and the communication protocol of the entire vehicle. Therefore, if AC charging is used, theoretically all vehicle models can be charged.

(2) The process of DC charging, in simple terms, involves the transmission of DC electricity through the charging station and power battery, eliminating the need for the on-board charger. This requires communication between the charging station and the vehicle control device or battery management system (BMS). The national standard GB/T20234 specifies the data transmission and control of the charging process in the form of charging messages through CAN bus. The S+and S - pins on the DC interface are used for charging communication. In addition, the national standard GB/T27930 also specifies the relevant content of communication protocols. In reality, charging equipment manufacturers and car manufacturers have their own charging protocols. Although they both comply with national standards, they still have their own unique characteristics. Without prior communication protocol docking, there may be situations where the battery cannot be charged.

For charging facility operators, currently electric vehicles can only achieve intelligent monitoring of the vehicle status, battery status, and charging station status after passing vehicle certification and charging on the DC station, and play their role in operation and maintenance. Therefore, users need to authenticate the vehicle information before charging, so that the charging equipment can recognize the user's vehicle normally.

For users, only when their cars are included in the charging service network of the operator can they charge normally. Otherwise, they can only find ways to solve the charging problem themselves. This is why the operator allows users to apply for a charging card, and it is also the reason why the operator often mentions the one car, one card binding.

2、 The problems reflected behind the reasons

1. The so-called public charging stations have never reflected the characteristics of universality and compatibility. At present, some charging stations in certain regions only conduct joint debugging on electric vehicle models of car companies in that region, without considering the issue of matching models in other regions. Therefore, the construction of charging stations is only a "public" charging station for a certain model. How can we talk about public utility?

2. The national standard GB/T20234 for electric vehicle charging was officially promulgated and implemented in 2013. With the rapid development of the electric vehicle industry, problems such as its incompleteness and refinement began to emerge. For example, in reality, various charging equipment manufacturers have their own charging protocols, and each car factory also has their own charging protocols. There will inevitably be differences in the agreements between the two parties, which has led to many problems for users during use.

3. Charging equipment manufacturers also lack consideration for compatibility and universality of their charging protocols in their design, and they need to conduct joint debugging with the charging equipment whenever electric vehicles are put into use; However, some car companies also adopt a conservative attitude towards electric vehicle related technologies and agreements, with insufficient openness, which leads to a lack of effective communication between the two parties and forms a technical barrier.

3、 Ways to solve charging problems

1. The relevant departments of the country need to further refine and optimize the national standard for charging and swapping, and clarify the ambiguous and controversial aspects in the national standard. The reasonable and perfect design of the charging and swapping national standard is an important guarantee factor for promoting the healthy development of charging infrastructure.

2. The government department should play the role of a referee. Relevant government departments need to supervise the standardization of public charging piles that are about to be put into commercial operation, conduct universality and compatibility tests on public charging piles, and only after passing the acceptance can operators carry out commercial operation. For some equipment that does not meet national standards, relevant enterprises and units should be instructed to rectify it, and even establish a nationally certified charging equipment catalog in the future.

3. A city level electric vehicle data monitoring platform will be established under the leadership of the government. New electric vehicles will be integrated into the city network, and vehicle information, network access, charging, and fault information can be integrated into one information management platform. This can ensure the security of user information and achieve intelligent management of electric vehicles and charging stations. Car manufacturers, charging equipment manufacturers, and charging operators can collaborate and interact smoothly on this platform.

4、 Conclusion

For the current issue of electric vehicles not being able to charge, it can be seen as a routine problem encountered in the early stages of development. Although this tests the first group of "crab eating" people, there is no need to worry too much. With the improvement of the national standard system, the increasing attention of the industry, and the development of the electric vehicle industry, I believe that this issue will only plague electric vehicle users in the short term. With the efforts of all parties in the electric vehicle industry, it will eventually disappear.

Lithium Batteries ,Ensure Quality

Our lithium battery production line has a complete and scientific quality management system

Ensure the product quality of lithium batteries

Years of experience in producing lithium batteries

Focus on the production of lithium batteries

WE PROMISE TO MAKE EVERY LITHIUM BATTERY WELL

We have a comprehensive explanation of lithium batteries

QUALIFICATION CERTIFICATE

THE QUALITY OF COMPLIANCE PROVIDES GUARANTEE FOR CUSTOMERS

MULTIPLE QUALIFICATION CERTIFICATES TO ENSURE STABLE PRODUCT QUALITY

Providing customers with professional and assured products is the guarantee of our continuous progress.

Applicable brands of our products