·The new energy bus standard will be further improved

The reporter learned from the 2014 China Bus Academic Annual Conference that China's new energy bus standards will be further improved.

It is understood that at present, China has issued 75 electric vehicle standards, but there is no standard for the technical conditions of hybrid city buses. The China Highway Bus Branch (hereinafter referred to as the passenger car branch) said at the annual meeting that it will organize the development of this aspect. standard. In addition, the national standards and industry standards corresponding to China's LNG passenger cars are also in a vacuum. At present, only Guizhou Province has formulated technical requirements for liquefied vehicle modification and local standards for LNG passenger cars, which were released in 2012. There are only two parts of the national standard for the conversion of compressed natural gas and LPG vehicles. In order to continuously improve, improve and improve the LNG bus technology, it is urgent to introduce relevant standards.

According to the passenger car branch, the association began to organize research in 2013 and applied to the Ministry of Transport for three important new energy bus standards, namely JT/T "General Technical Conditions for Pure Electric City Bus" and JT/T "Mixed". The Technical Requirements for Power City Bus and JT/T "Technical Requirements for LNG Bus" were included in the standard system (repair) plan of the Ministry of Communications. Next, the bus branch will organize the industry to formulate the “Technical Requirements for Dual-Source Fast-Acting Bus Buses”, and at the same time, according to the development needs of new energy buses, relevant product standards will be formulated for important parts and components of new energy buses.

In view of the problems faced by China's new energy buses and the status quo of new energy bus technology, the bus branch also proposed to guide the development of new energy bus technology from four aspects.

First, increase the technical promotion of new energy buses. In the bus rating work, the rating of new energy buses is the focus of work, especially in terms of the dynamics, safety and comfort of new energy buses, and the production enterprises are encouraged to adopt new technologies. New technology, adopting new design methods and new control concepts, achieving technological breakthroughs in reducing body weight, improving power battery efficiency, and ensuring electrical system safety, and striving to match the design of new energy buses in China during the policy support period. , power system, manufacturing, cost control reached a higher level, so that new energy bus has a strong market competitiveness.

Secondly, explore the technological management innovation of the new energy road bus industry. At present, the new energy road passenger car technology has been developed more comprehensively, and scientific guidance and standardized management are urgently needed. Therefore, it is also necessary to explore and innovate in the technical management of the industry, and guide the technological development of new energy road passenger cars through scientific management. For example, based on relevant technical standards, we will try to carry out the rating of new energy road passenger cars, so that new energy buses will enter the operation market as soon as possible and accept market inspection.

Third, enrich the technical route of new energy buses. China has a vast territory and should explore some new technical routes to meet the actual needs of each region. For example, the dual-source fast-charging buses used by bus companies in some places have good off-line maneuvering performance. There is no line network at busy intersections, which solves the shortcomings of poor trolley mobility, and is more suitable for current city buses. The need to run. In addition, some companies have also carried out technical demonstrations and prototype trials of fuel cells and energy storage supercapacitor buses, which are practical measures to enrich the technical route of existing products.

Fourth, actively promote the development of core technologies and key component technologies. The main bus companies have mastered the key battery management system and power system integration and matching technology. The domestic key components can also meet the needs of use, but the existing technology still has a certain gap from the market demand. In addition, in terms of the reliability and work efficiency of key components, China still has a certain gap from the international first-class level. The industry should also focus on the development ideas based on the power control system and the development of key component products. To meet the transportation market demand in a short period of time.

The bus branch believes that there are three problems in the development of new energy buses. First, there is no sales without subsidies. The rapid transit of policies has caused the development of new energy buses to be intermittent. At present, there are 129 announcements for 21 hybrid vehicles in the general hybrid bus, but the sales volume in 2014 was almost zero. The initial investment in the passenger car industry has been squandered, and the later development has to start again. Second, when the bus is in full swing, the road passenger service industry is in jeopardy, and the new energy bus cannot enter the road passenger transport market. Third, the evaluation criteria for promotion and application are worth discussing. Financial subsidies are all in the car purchase process, and the benefits generated by the state's large subsidies cannot be assessed. It cannot be said that it is a major shortcoming.