Judging from the official map, Han's appearance still uses BYD Dragon? Face's family design, the front face design of DM model and EV model is different, EV model is more futuristic, and there is no net design. The slightly raised lines on the hood are like a strong man, and BYD's family-owned horizontally arranged LED headlights make the front of the car feel exquisite.
The DM model retains the traditional middle net design, and the left and right chrome trim strips connect the left and right headlights, and the middle net is also surrounded by chrome trim strips; Chinese characters are embedded in the front of the car.
The sleek arc outlines the slip-back body shape of Korean models, and the powerful waistline extends from the front fender to the rear fender, blending with the lines of the tailgate cover. This smooth design helps to reduce the wind resistance of the vehicle.
The tail adopts the design of penetrating taillights, which is also one of the elements of retro regression. If there is no accident inside the lamp group, the strip light source will be used, which is more advanced and more delicate than the starting light source. The taillights on both sides are also decorated with chrome trim, which makes the penetrating taillights look a bit dull.
It is worth mentioning that the car is also equipped with a low wind resistance rim independently developed by BYD, and its hollowing-out ratio is about 8%, which can reduce the wind resistance as much as possible while ensuring the heat dissipation effect of vehicle brakes.
20 15 BYD announces Korean vehicle information. The front-wheel model is equipped with a plug-in hybrid system consisting of a 2.0T engine and a 150 horsepower front axle motor, while the three-engine four-wheel drive version also adds 476 horsepower motor to the rear axle. The lithium iron phosphate battery with blades is used in the battery pack.
Shu Youxing, general manager of BYD's international cooperation division, revealed in committee of 100 that BYD mass-produced a new generation of blade batteries in the first half of this year and applied them to the new model BYD Han.
According to Shu Youxing, the new generation blade battery has more than 300 core patents, which greatly improves the volume energy density and weight energy density, and is very competitive in design strength, safety and cost. In Wang Chuanfu's speech, he said: From the safety point of view, iron battery is a good battery in the field of passenger cars. BYD blade battery will be mass-produced for the first time in Chongqing factory in March this year, and its volume energy density is 50% higher than that of traditional iron battery. BYD Han, which is equipped with this battery for the first time, will have a battery life of 600km. In addition to high safety, the blade battery also has the characteristics of long life, and the life of the whole vehicle can reach more than one million kilometers.
At present, mainstream manufacturers choose to use ternary lithium batteries because of their excellent energy density. The first car in China with a battery life of more than 600km will use ternary lithium battery of Contemporary Ampere Technology Co., Ltd.. But ternary lithium batteries also have obvious disadvantages-safety.
In recent years, many accidents such as spontaneous combustion and explosion of electric vehicles are inseparable from ternary lithium batteries. Ternary lithium batteries are active in nature, and are prone to overheating and fire when encountering abnormal situations such as short circuit and extrusion. Because of this, automobile manufacturers and battery manufacturers have taken quite a number of measures, including automatic power off, liquid cooling system, thermal insulation system, micro-explosion power off system, etc., to ensure the working state of ternary lithium batteries. However, when vehicles are driving on the road, it is inevitable that they will encounter various unexpected situations. Coupled with various spontaneous combustion accidents, 100% is difficult to ensure that the car battery is not in accident.
Please forgive the poor quality of my photos.
Lithium iron phosphate batteries do not have this trouble. According to statistics, there is no danger of spontaneous combustion of vehicles caused by battery failure in lithium iron phosphate batteries. According to laboratory data, the spontaneous combustion temperature of ternary lithium battery is 200℃. Once the temperature reaches 200℃, the materials of ternary lithium batteries begin to melt, spontaneously ignite and even explode, while the spontaneous combustion temperature of lithium iron phosphate batteries is 800℃, which means that lithium iron phosphate batteries can hardly spontaneously ignite unless in extreme cases.
Please forgive the poor quality of my photos.
The blade batteries developed by BYD use large batteries, which are arranged together to form an array, just like blades inserted into a battery pack. On the one hand, it can improve the space utilization rate of the power battery, on the other hand, it can ensure that the battery has a large enough heat dissipation area to conduct the internal heat to the outside, thus achieving a high energy density. According to patent information, batteries can be directly integrated into a battery pack without modules, which greatly reduces useless equipment such as housings and brackets in traditional battery packs, which is also an important reason why Korea can achieve 600km battery life.
In the field of batteries, BYD insists on developing relatively safe lithium iron phosphate batteries, which is commendable, because lithium iron phosphate batteries are more difficult to improve the energy density than ternary lithium batteries, which is inherent in materials and must be improved by changing other configurations, including modules and battery design methods; Safety is an important dependence of BYD's research and development of lithium iron phosphate battery. After all, there are too many cases of spontaneous combustion caused by battery problems, and drivers and passengers should be the first priority of vehicles. After the development of this battery, it has a positive impact on BYD itself. After all, it can be sold to other car companies at a relatively high price, which reduces the research and development cost and ensures the safety of users, killing two birds with one stone.
This article comes from car home, the author of the car manufacturer, and does not represent car home's position.