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release time:2024-04-10 Hits: Popular:AG11 battery
China's new energy vehicle AA Ni-MH batteriesmanagement system has major flaws
If you ask new energy vehicle manufacturers what they are most afraid of? Many people may answer spontaneous combustion. Indeed, spontaneous combustion of electric vehicles is not only a nightmare for companies, but also for the entire industry.
The reason is that in addition to the problem of the AA Ni-MH batteriesitself, the AA Ni-MH batteriesmanagement system (AA Ni-MH batteriesManagement System, referred to as BMS) that controls the operation of the AA Ni-MH batteriesalso plays a key role.
To a certain extent, it can be said that the level of China's lithium batteries is not low, and it ranks first in the world in terms of production scale. Many advanced production lines are imported, and the hardware facilities are already at an advanced level. But why do many batteries fail after two or three years? Industry insiders believe that an important shortcoming lies in BMS.
I thought the AA Ni-MH batterieswas dead, but actually the AA Ni-MH batteriescell was still good. This exposed the weakness of the control system. Huang Marcus, general manager of Delilong (Shanghai) Electric Vehicle Technology Development Co., Ltd., told reporters.
BMS, often called the brain of new energy vehicle batteries in the industry, together with the power AA Ni-MH batteriespack and vehicle control system constitute the three core technologies of new energy vehicles. Due to its unique importance in the new energy automobile industry, it is increasingly sought after by the industry and also contains huge business opportunities.
The first BMS research in China appeared around 2000, and it was only about four or five years before the product actually appeared on the market. The reporter learned that the immaturity of BMS technology has become a bottleneck that needs to be broken through in the further development of new energy vehicles.
At present, the market management of BMS products in my country is still in a disorderly stage, and there is no unified national mandatory testing standard. At the same time, there is still a big gap between my country's BMS product technical capabilities and design concepts and foreign countries, making it difficult to meet the actual application needs of new energy vehicles in the future.
Safety orders and psychological comfort
All plug-in hybrid vehicles and pure electric vehicles put into demonstration operation must be equipped with real-time monitoring systems for vehicle operating technical conditions, especially to strengthen monitoring of the working conditions of power batteries and fuel cells.
On August 18, 2011, the Ministry of Science and Technology, the Ministry of Finance, the Ministry of Industry and Information Technology, and the National Development and Reform Commission jointly issued a new energy vehicle demonstration and promotion safety order - "Letter on Strengthening the Safety Management of Energy-saving and New Energy Vehicle Demonstration and Promotion". emphasize.
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