Volvo Cars announced that they have achieved a major technological achievement in the lightweighting of automotive batteries, which can make current electric vehicles lighter by 15%. Currently, this technology has been tested on the S80 test vehicle.
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As “energy saving and consumption reduction†has become a topic of widespread concern, lightweighting has also been widely applied to all aspects of the automotive field, and it has improved fuel economy while improving handling. The fuel consumption of a car mainly depends on the displacement of the engine and the total mass of the car. Under the premise of keeping the overall quality, performance and cost of the car unchanged or even optimized, reducing the weight of the car can increase the output power, reduce the noise, improve the handling and reliability. Sexuality, increase vehicle speed, reduce fuel consumption, reduce exhaust emissions, and improve safety.
Research figures show that if the vehicle weight is reduced by 10%, the fuel efficiency can be increased by 6%-8%; if the rolling resistance is reduced by 10%, the fuel efficiency can be increased by 3%; if the transmission efficiency of the axle, transmission and other devices is increased by 10 %, fuel efficiency can be increased by 7%. The car body accounts for about 30% of the total mass of the car. Under no-load conditions, about 70% of the fuel consumption is used in the body quality. Therefore, the lighter body is beneficial to the fuel economy of the vehicle, vehicle control stability, and collision safety. )
What is the key to this battery lightweighting technology?
Volvo invented an innovative lightweight battery structure. This structure consists of a new type of nanomaterial that includes nanostructures composed of carbon fibers, polymeric resins, and supercapacitors interposed between them.
What are the characteristics of this new material?
The battery structure of this new material is not only very light, but also can be made into a thin sheet, which is more convenient to arrange. In addition, it has good strength and applicability, can replace the body panel, thus saving space for the battery pack.
When was this R&D project started?
The project was launched in 2010. It is sponsored by the European Union and has 10 major institutions involved, and Volvo Cars is the only car manufacturer. The original intention of the project was to solve the problem of the current bulky battery pack in hybrid and electric vehicles, while also ensuring battery efficiency and performance.
How is this new material battery pack made?
First, the carbon fiber material is made into a thin sheet, then molded, dried, hardened, and the super capacitor is implanted in it, and it is completed. It can be made into a battery module by superposition, and it is made into a body panel and arranged on the body frame. This new battery panel can replace the door, trunk cover, hood, roof and so on.
How does this new material battery pack work?
This new battery can recover the braking energy of the vehicle or it can be directly connected to the grid for charging. While the vehicle is running, the power of the battery pack can be supplied to the motor of the car.
What advantages does this new battery have over current batteries?
Studies have shown that this new material battery can be charged faster than conventional battery packs, with better strength and greater applicability. Volvo also said that this new battery material is cheaper and more environmentally friendly. If the current electric vehicle battery is completely replaced with this new material, the weight of the vehicle can be reduced by more than 15%, and the effect is obvious.
What is the current research progress of this new battery technology?
Still in the practical test phase. Volvo Cars has built two S80 test vehicles to test the effectiveness of this battery material. The rear cover of the test vehicle replaces the current standard car battery with this material, and even replaces the stabilizer bar at the front end of the vehicle with the starter battery pack.
Summary: The bulkiness of the battery pack is a major problem that plagues the current "energy saving and consumption reduction" of electric vehicles. It leads to the impact of the electric vehicle space and the mileage is not ideal. If this new battery technology is so amazing, it will greatly improve the overall performance of electric vehicles, thus promoting the popularity of electric vehicles.
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