Technical advantages of 48V lithium battery pack for vehicle

Technical advantages and applications of 48V lithium-ion battery pack systems for vehicles. The 48V mild hybrid system mainly consists of a 48V lithium-ion battery pack, a motor with an integrated AC/DC inverter, and a DC/DC converter. The 48V power supply system can store more power than the 12V power supply system. In the car equipped with the start-stop system, the engine can be turned off for a long time, reducing the situation that the battery power is too low and the engine is frequently started to charge.

Technical advantages of 48V lithium-ion battery pack system for vehicle

Although the 12V start-stop system is low-cost, the carbon dioxide emission reduction is limited; the high-voltage hybrid has more emission reductions, but the system cost increases more; the 48V lithium-ion battery pack system is close to the cost of the 12V start-stop system, and the supply is close to the high-voltage hybrid technology. performance; at the same time, the carbon dioxide emission reduction can reach up to 15%; and the 48V lithium-ion battery pack system can supply other loads other than the power system, such as air conditioning, steering, seat heating, etc.Also read:10kwh lifepo4 battery supplier

At present, the mainstream in the Japanese market is a strong hybrid vehicle equipped with a high-voltage battery of more than 100V, using a lithium-ion rechargeable battery module of more than 100V. Although the hybrid electric vehicle (HEV) can greatly improve the fuel efficiency, the special Components and withstand voltage components are expensive. Using a 48V lithium-ion battery pack system will also add cost, but relative to the cost of a pure electric vehicle or a strong hybrid vehicle, it can save 40% to 60% of the cost.

One of the keys to the 48V lithium-ion battery pack system lies in lithium-ion battery technology, which can provide a higher (3 times) energy density than lead-acid chemical batteries, while reducing size and weight. At the same time, the charging performance of the 48V lithium-ion battery is better, which can store the energy recovered from the car's braking more efficiently, and provide more and more electronic loads (such as front seat heating, heated windshield) required in the car. , rear shock absorber) supply support.Also read:10kwh lifepo4 battery manufacturer

The 48V lithium-ion battery packs the BMS substrate, battery cells, relays, and fuse packs in the same box, with strong assembleability and high reliability, further improving related technologies.

48V Li-ion battery pack system advantages and features

Flexible platform design, directional research and development, support for customization, and can provide personalized services according to the needs of different OEMs

Easy maintenance and low maintenance cost

low noise

Enhanced durability and impact resistance

Strong battery life, low self-consumption, long battery life

High energy density, small size, light weight and various shapes

Application of 48V Li-ion Battery Pack System for Vehicle

Due to the lag in technological innovation of batteries, the development of pure electric vehicles is slow. Therefore, some experts say that the hybrid system is more in line with the current demand for energy saving and emission reduction. In the hybrid system, the use of 48V lithium-ion battery packs is the most "cost-effective".

Lithium-ion battery packs for vehicles are the power lithium batteries for hybrid electric vehicles and electric vehicles. Because some technical properties of nickel-metal hydride batteries, such as energy density, charge and discharge speed, have approached the theoretical limit, lithium-ion batteries have high energy density and capacity. The advantages of large size and no memory have been unanimously recognized by car manufacturers and battery manufacturers. At present, the focus of research and development in various countries is lithium-ion batteries.

The 48V system is an improvement and upgrade to the 12V "micro-hybrid system", replacing the traditional starter motor and generator with a BSG motor, which is equivalent to an enhanced version of the automatic start-stop system. In addition to the automatic start-stop function, the 48V system can also supply auxiliary power when necessary to reduce fuel consumption at the start.Also read:lifepo4 10kwh supplier

As far as power lithium batteries are concerned, at present, ternary lithium ion battery packs, lithium iron phosphate battery packs and lithium titanate ion batteries have applications in the field of electric vehicles. Technology upgrade stage in 2020. The new lithium-ion battery has been industrialized. The specific energy of the energy-type lithium-ion battery cell reaches 350Wh/kg, and the specific energy of the energy-power lithium-ion battery cell reaches 200Wh/kg. The power lithium battery realizes intelligent manufacturing, the product performance and quality are greatly improved, and the cost is significantly reduced. The economy of pure electric vehicles is basically equivalent to that of traditional gasoline vehicles, and plug-in hybrid vehicles have entered the stage of popularization and application.

The 48V lithium-ion battery pack system can provide more functional integration such as energy recovery system, automatic start-stop system, etc. The 48V lithium-ion battery system can effectively absorb the energy of car braking and convert it into kinetic energy to supply to the car. higher demand.

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