“A cold rain in the autumn”, the temperature has dropped a lot in recent times, and many people have begun to add clothes People are afraid of cold, mobile phones are also afraid of cold? Many netizens found that after the weather was cold, the mobile phone was powered down very quickly.

Energy and environment are two serious problems that mankind must face in the 21st century The development of new energy and clean renewable energy is one of the most decisive technological fields in the world economy in the future.

Despite the importance of new energy vehicles has been highlighted, but in the early stage of development, industrial policy still very closely On February 13, the ministry of finance, ministry of industry, the ministry of science and technology, development and reform commission and other four ministries jointly issued "on fiscal subsidy policy adjustment perfect new energy automobile application notice (hereinafter referred to as the" notice "), a new subsidy policy officially fall to the ground.

Polaris energy storage network: the performance of the cell is inconsistent, are formed in the production process, in the use of the process to deepen In the same battery pack, the weak become weak, and accelerate to become weak.

At the 2017 Shanghai auto show, roewe unveiled its latest electric vehicle, the roewe "wings of light" vision-econcept The concept electric car is positioned as a pure electric coupe SUV.

With the rectification of the lead-acid battery industry and the serious environmental problems exposed by the electric vehicle industry, the reaffirmation of the “limit speed limit” regulations for electric vehicles has caused much concern in this industry At the end of May this year, the "Notice on Strengthening the Management of Electric Bicycles" issued by the Ministry of Public Security, the Ministry of Industry and Information Technology, the State Administration for Industry and Commerce, and the General Administration of Quality Supervision, Inspection and Quarantine showed that "the speed of no more than 20 kilometers, the mass of the whole vehicle (weight) is not more than 40 kilograms" is an electric bicycle.

The rise of the new energy automobile industry has expanded the market demand for lithium resources, causing the soaring price of lithium However, a recent report from Morgan Stanley indicates that lithium supply may exceed the demand for lithium in new energy vehicles in the future, and lithium price may drop by 45% in 2021.

I am charging a lithium battery at a time In order to detect the performance of a new lithium-ion charging board, an ammeter (pointer-type multimeter) is connected between the charging board and the lithium battery to monitor the charging process.

The key factors for the development of China's power vehicles are cruising range, charging speed and safety performance These three factors are caused by the power lithium battery technology, so it can be regarded as the three technical bottlenecks of the power lithium battery.

Graphene is a two-dimensional crystal, graphene unique structure makes it have excellent electrical, mechanical, thermal and optical properties, such as graphene has 100 times the silicon ultra high carrier mobility, the intensity of up to 130 gpa, good flexibility and nearly 20% of stretching rate, high thermal conductivity, specific surface area of up to 2600 m2 / g, and almost transparent, within the wide band of light absorption is only 23%.