With the popularization of electric vehicles, on-board energy storage power systems have attracted more and more attention. On-board energy storage power supply system refers to the power supply system installed on electric vehicles to store electrical energy and supply it to the vehicle. Not only does it provide continuous power to the vehicle, but it also improves energy efficiency through the vehicle's braking energy. This article will introduce the structure, working principle, performance characteristics and application scenarios of the on-board energy storage power supply system in detail.
1. The structure of the on-board energy storage power supply system.
The on-board energy storage power supply system is mainly composed of a battery pack, a battery management system, a charger, and an energy system. Among them, the battery pack is the core part of the entire power system, and its role is to store and release electrical energy. The battery management system monitors, protects and manages the battery pack to ensure the normal operation and safe operation of the battery pack. The charger is to provide charging power for the battery pack and control the charging process. The energy** system converts braking energy into electrical energy and stores it in the battery pack when the vehicle brakes.
Second, the working principle of the on-board energy storage power supply system.
The working principle of the on-board energy storage power supply system mainly includes the charging process and the discharge process. During the charging process, alternating current is converted to direct current through the charger and stored in the battery pack. During the discharge process, the battery pack provides electrical energy to the vehicle, and at the same time, the vehicle's braking energy can be converted into electrical energy and stored in the battery pack through the energy** system.
3. Performance characteristics of on-board energy storage power supply system.
The performance characteristics of the on-board energy storage power supply system mainly include the following aspects:
1.High energy density: On-board energy storage power systems need to have high energy density to meet the needs of vehicle driving. At present, lithium-ion batteries are the mainstream battery type for on-board energy storage power systems, and their energy density is relatively high.
2.Long life: The on-board energy storage power system needs to have a long life to ensure the durability of the vehicle. Generally speaking, the life of lithium-ion batteries can reach more than 2000 times of charge and discharge.
3.Fast charging: On-board energy storage power systems need to have fast charging capabilities to shorten charging time and improve efficiency. At present, the mainstream charging method is a combination of DC fast charging and AC slow charging.
4.High safety: On-board energy storage power systems need to have a high level of safety to ensure the safety of vehicles and personnel. Generally speaking, lithium-ion batteries have high safety performance, and they are equipped with a variety of safety protection measures inside.
5.Environmental protection: The on-board energy storage power system needs to be environmentally friendly to reduce the impact on the environment. At present, lithium-ion batteries have become one of the mainstream battery types, with relatively little waste and less impact on the environment.
Fourth, the application scenarios of the on-board energy storage power supply system.
On-board energy storage power systems can be used in various types of electric vehicles, including family cars, buses, trucks, and special vehicles. In different application scenarios, the capacity, power, charge and discharge performance and other parameters of the on-board energy storage power system will also be different. For example, in heavy-duty vehicles such as buses and vans, there is a need to choose an on-board energy storage power system with a larger capacity and higher power due to its large load capacity. In the family car, due to its short mileage, it is possible to choose an on-board energy storage power system with smaller capacity and lower power.
In conclusion, on-board energy storage power systems are an indispensable part of electric vehicles. With the continuous development of electric vehicle technology, the performance of on-board energy storage power supply system will continue to improve, providing a more reliable guarantee for the popularization and development of electric vehicles.