Battery is the core component of electric vehicle, and the power of electric vehicle comes from battery. Therefore, the durability and safety of electric vehicles are determined by the level of batteries and battery technology. Therefore, it is very important to choose a reliable battery and host manufacturer.
As the leader of new energy vehicles, BYD has become one of the best manufacturers of Sanpower technology. The benefits of consumers choosing industry leaders are obvious. Advanced technology means that its products are one of the advanced products on the market now, which saves a lot of inspection time and cost. Because such products are more reliable, BYD is the first main engine manufacturer in the world to apply power batteries to automobiles, and has 15 years of seamless cooperation experience with vehicle manufacturers.
Secondly, BYD has realized the whole industrial chain layout of batteries, from mine raw materials to production technology, as well as core design, module, package development and manufacturing, BMS manufacturing and battery utilization and recycling in the later period. The advantage of this layout is that all aspects of battery production are inspected by BYD, which ensures the reliability of the whole chain of batteries from source to recovery. At the same time, the layout of the whole industrial chain helps to keep the prices of batteries and electric vehicles stable, and reduce prices and promote sales under certain conditions.
In terms of battery research and development, BYD spends 7% of its annual sales on battery research and development, and more than 1000 invention patents have been authorized, further ensuring that BYD batteries always maintain the leading position in the industry and giving consumers the power choice to lead the times.
In the end, BYD battery achieved higher energy density, higher discharge voltage and better low temperature performance. More importantly, BYD battery has achieved excellent safety by adopting the comprehensive technology of square aluminum shell, perfect protection strategy, leading battery thermal management system and unique charging protection technology. Today, the safety of electric vehicles has attracted much attention. BYD battery has achieved a sales volume of 500,000 people, and the safety accidents caused by batteries are no exception.
As mentioned above, the motor provides the driving force for the electric vehicle. Without a motor, an electric car can't run. Therefore, the motor has become the core component of electric vehicles. If the engine is the heart of a traditional car, then the drive motor is the heart of an electric car, which directly affects the external performance of the vehicle.
At present, there are two main types of motors used in electric vehicles: AC asynchronous motors and permanent magnet synchronous motors. Compared with AC asynchronous motor, permanent magnet synchronous motor has the advantages of high power density, high energy conversion efficiency (about 90%-95%) and low energy consumption. BYD chose the technical route of permanent magnet synchronous motor according to the prospect, and now more and more manufacturers and competitors follow suit.
The data shows that the proportion of permanent magnet synchronous motor in automobile motor installation in China is getting higher and higher, and now it is close to 80%. BYD, as the only main engine factory that independently developed and designed permanent magnet synchronous motor, ranked first in the installed capacity of automobiles (including passenger cars and commercial vehicles) for four consecutive years from 20 15.
Among the three technologies, electronic control technology is related to the energy consumption, charging and discharging efficiency, energy recovery efficiency and motor controllability of new energy vehicles. In terms of electronic control technology, BYD has a well-known technology, that is IGBT technology.
What is IGBT? IGBT is equivalent to an electric car, and CPU is equivalent to a computer. Its functions include OBC charging and discharging, vehicle steering assistance, variable frequency heating of automobile air conditioner, front and rear motor drive and other important parts of electric vehicles. It controls the conversion between DC and AC, and also determines the torque of the drive system, which directly affects the acceleration ability of the vehicle.
For a long time, IGBT technology has been monopolized by a few foreign companies. BYD is the first independent automobile brand in China to master IGBT technology, and has mastered many core technologies that determine the core performance of electric vehicles. At present, BYD IGBT4.0 products have reached the world leading level in chip loss, module temperature cycling ability, current output ability and other important indicators, and the comprehensive loss is about 20% lower than other products. Other things being equal, adopting BYD IGBT4.0 and adopting the current mainstream IGBT in the market can save 3% of the electricity fee of 100 km.
It is very important for consumers to choose a reliable electric car. BYD's battery industry chain layout, high-performance permanent magnet synchronous motor and high-efficiency control technology have become consumers' first choice. Not only that, BYD also introduced E-platform technology to realize the integration of motor and electronic control. I believe that in the near future, with consumers' further understanding of electric vehicle technology, BYD's E-platform battery, three-in-one drive and three-in-one high voltage will also become high-quality electric vehicles.