Biyaditang electric car battery details

Biyaditang electric car battery life is actually much more than that of Biyadiqingao because Biyaditang has expanded the battery capacity of the battery compared to Qin, with a maximum battery capacity of 18.4 kilowatts. So how long does Biyaditang live as an electric car battery?

Biyaditang electric car battery expansion after pure electric life up to 85 kilometers

Biyaditang is a four-wheel drive SUV model, but compared to the traditional four-wheel drive model, it does not have the traditional meaning of the central differential, split box, and transmission shaft. Its four-wheel drive system is implemented by setting a separate motor on the rear axle of the vehicle. To drive the rear axle, And through the motor control device to achieve the power distribution of the front and rear axle.

Biyaditang's power system is divided into two sets, in which the conventional gasoline power system uses its own 2.0 Ti engine and a new wet double clutch gearbox. The maximum power of this 2.0 Ti engine is 151 kW(205 HP) / 5500 rpm, and the maximum torque is 320N · m/1750-4500 rpm.

The electric power system consists of two sets of motors placed on the front and rear axes respectively. The maximum power of each motor is 110 kW and the maximum torque is 200N · M. When the vehicle accelerates rapidly, the gasoline engine and the motor work at the same time, so that the engine + motor can output a maximum power of 370 kW and a maximum torque of 720N · M. For the acceleration performance of this car, the manufacturer announced that Don's 0-100km / H time is 4.9 S.

Although Qin used the same DMII hybrid system as the already listed Qin, Tangze made some upgrades to the battery capacity of the battery, with a maximum battery capacity of 18.4 kilowatts, so that Tang could achieve 85 kilometers of pure electric power. range.

Biyaditang electric car battery details

BYD Tang uses lithium iron phosphate batteries like Qin, except that Qin's battery capacity is 13 kilowatts per hour, and Tang's battery capacity has been increased to 18 kilowatts per hour, with a pure electric life of 85 kilometers.

Lithium iron phosphate batteries refer to lithium-ion batteries that use lithium iron phosphate as a positive material. The positive materials of lithium-ion batteries are mainly lithium cobalt acid, lithium manganese acid, lithium nickel acid, ternary materials, and lithium iron phosphate. Among them, lithium cobalt acid is currently a positive material used in most lithium-ion batteries.

The long-life lead-acid battery has a cycle life of about 300 times and a maximum of 500 times, while the lithium iron phosphate power cell has a cycle life of more than 2,000 times. The standard charge(5-hour rate) can be used up to 2,000 times. The lead-acid batteries of the same quality are "new half year, old half year, maintenance and maintenance for another half year", and the maximum time is 1 to 1.5 years, while lithium iron phosphate batteries are used under the same conditions, and the theoretical life will reach 7 to 8 years. Taking into account, the performance price is more than four times that of lead-acid batteries in theory.

The report shows that lithium cobalt acid batteries are the most unstable at high temperatures, and lithium iron phosphate batteries are the most stable: when the temperature reaches 180dushitesila's lithium cobalt acid batteries will decompose into oxygen, releasing a large amount of heat energy and may explode; The decomposition temperature of lithium manganese acid battery is higher than that of lithium cobalt acid battery. The structure of the BYD lithium iron phosphate battery up to 600 degrees remains stable and does not release oxygen.

The battery technology route determines the development potential of pure electric vehicles. Most Japanese car companies use lithium-manganese batteries, and most domestic car companies use lithium iron phosphate batteries. Lithium iron phosphate is lower in energy density than ferromanganese lithium batteries, but its service life is vice versa. In the 50-degree environment, the positive manganese will melt into the electrolyte and shorten life. Lithium iron phosphate can no longer undergo chemical changes and has a longer life because of the use of trivalent iron.

Summary: Although the battery life of Biyaditang electric car has not been explicitly stated by the government, from the perspective of the performance of lithium iron phosphate battery, the battery use of 7 to 8 years should not be a problem, but the battery loss caused by the increase in the number of charges will increase. Whether or not manufacturers can provide after-sales services such as battery repurchase is another big selling point to attract consumers 'eyes.

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