Electric car low temperature "armpar" solution

2022/04/08

  Author :Iflowpower – Portable Power Station Supplier

On January 26, the Ministry of Industry and Information Technology gave a solution for the low temperature "armpit" in electric vehicles. In response to the dynamic lithium-ion battery, there is a significant performance drop in low temperature environment, battery capacity attenuation, renewal mumens, Industry and Information Technology, has been organized and powered, long-term, industry institutions, high school institutes to carry out technical research, acceleration Low-impedance film formation additive, all-weather battery and other R & D and industrialization, improve electric vehicle low temperature driving performance. The Ministry of Industry and Information Technology said that recently, experts' seminars have also been organized to promote this issue.

There are several measures: First, ask the automotive company to strengthen after-sales service, solve user appeals in time. Organize industry institutions to strengthen science propaganda and guide scientific use. The second is to support the company and battery production company to strengthen the technical research, improve the low temperature driving performance of electric vehicles, and improve user experience.

The third is to grasp research and formulate relevant technical specifications, accelerate the promotion of my country's working conditions, clarify performance and technical requirements of low temperature environment, and strengthen product access and production consistency check. At present, key companies, industry institutions have actively active, publishing winter cars, increasing disposal service, layout scientific and technological research project. It is understood that the whole vehicle and battery companies have a low temperature "killer" to resist the life of life, and they are strengthening technical research and service upgrade.

Beiqi new energy uses a PTC heating system, which is similar to the "floor heating" to the battery, the structure is simple and the cost is relatively low, but the power is consumed to heat the heat, which will sacrifice some endurance mileage. In addition, Beiqi new energy also launches ultra-low temperature-free start and climate battery, developing the fourth-generation IBTC battery thermal management technology. BYD blade battery uses "no module" structure, allowing the heating line into a heating platform, heating all battery cells with a large flat, heating efficiency is more uniform, and the battery temperature is consistent, which is conducive to release More electricity; on the other hand, by continuously reducing vehicle wind resistance, using measures such as low viscosity grease in winter conditions.

Wei Lian's car improves related supporting facilities such as power transmission stations to deal with low temperature driving problems, and the challenge is the operational efficiency and service standard for power saving stations. From the end of April 2020 to the end of the year, it is approximately more than 70 shift stations, which is about 2 stations per week. Weima Motor uses a 24-weather battery pack constant temperature management system, which is important to heat the system by independent liquid cooling system, PTC electric heating system, minus 30 ¡ã C polar heating system, more stably controlling the battery temperature in efficient, safe temperature range, effective Improve the capacity and charge and discharge efficiency of winter available battery.

In addition, a special inspection service in winter is also launched. In addition to the special design of the positive material, electrolyte, etc. of the monomer battery, the powerful electricity, etc.

, is also actively cooperating with colleges and universities to develop self-heating techniques, while doing a well-integrated design of battery packs, taking into account temperature control systems and battery efficiency. Balance.

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