1. When the car is running, the energy provided by the power system is mainly consumed in the following aspects: efficiency loss in the process of converting energy into mechanical energy. For internal combustion engines, it is reflected in the thermal efficiency of the engine, and for electric motors, it is the battery discharge efficiency, inverter efficiency, and motor efficiency.
2. The internal friction consumption of the transmission mechanism. The energy provided by the internal combustion engine and the engine is consumed to a certain extent by the internal friction of each gear transmission shaft and the like. However, compared with internal combustion engine vehicles, Oil Electric Hybrid Sedan have a smaller loss than internal combustion engine vehicles due to the simplified structure of the transmission device of Electric Car.
3. Overcoming road resistance and air resistance work consumption. When driving at a constant speed on a well-level road, the energy consumed by the car to the outside world is all used to overcome road resistance and air resistance. As the vehicle speed increases, both resistances increase, and the proportion of air resistance increases as the vehicle speed increases.
4. In the process of acceleration and climbing, it is converted into kinetic energy or potential energy. The kinetic energy acquired by the car is dissipated during deceleration or braking.
5. Consumption of electrical appliances and air conditioners in the car.
If "using as little electricity as possible to travel a long enough distance" is used as the evaluation standard for whether an Electric Car saves electricity, each of the above aspects will have an impact on the result. For example, the friction of the transmission system depends on the performance of the vehicle itself, and some, such as the working condition of the power system, depend on both the performance of the car and the driving habits. Consumers generally do not modify the core components after buying a car, so the following will mainly discuss the impact of driving habits on the "power saving" of Oil Electric Hybrid Sedan.
For internal combustion engine vehicles, the working condition with higher fuel economy is located in the period of constant speed driving with higher engine speed and higher vehicle speed. If you start and stop frequently, accelerate and decelerate for no reason, or even keep driving at a low speed, it will lead to an increase in fuel consumption.
Compared with internal combustion engines, electric motors have low-speed, high-torque characteristics and strong overload capabilities, and have better start-up acceleration performance than internal combustion engines. With the change of external load and rotational speed, the torque and power output characteristics of the motor change greatly, and the fluctuation range is larger than that of the internal combustion engine. The energy dissipation of the motor link is mainly the heat dissipation caused by the thermal effect of the current passing through the internal resistance of the motor. An increase in the current will lead to an increase in heat production. High-speed driving requires more current, so if an Electric Car wants to save power, the speed needs to be controlled not to be too high.