Precautions for purchasing electric truck three-power system

To buy an electric truck, you need to pay attention to the "three electric systems". To put it simply, the motor, battery (power battery), and electronic control system are the three core components of the electric truck, collectively referred to as the three major electric systems. The three-power system is the core of the electric dump truck. Next, Let's get to know the three electric systems before you decide to buy an electric car.

Here is the content list:

l Motor

l Battery

l Electronic control system

Motor

According to the definition of a motor, its basic working principle is an electromagnetic device that converts mechanical energy and electrical energy with a magnetic field as the medium. Classification can be roughly divided into DC motors, induction motors, and permanent magnet motors. At present, permanent magnet motors are loaded more, and we are more common. The angle of focus for an electric truck electric motor is similar to that for a drive motor. We generally regard the parameters such as horsepower, torque, and power consumption of the motor as the main angle of concern. If a motor with a lower power is selected, it is usually operated at full load, which will cause the motor to often be in an overloaded state. It consumes electricity and affects the life of the three-power system. If a high-power motor is selected, it cannot be fully utilized in actual operation. It often works in the under-load state, not only the efficiency will be lower, but the low load will also affect the life of the three-power system.

Battery

The battery pack is actually like our traditional truck fuel tank , and it is an electric truck energy storage module. It usually consists of structural components such as batteries, battery packs, BMS battery management systems, cooling systems, high and low-voltage wiring harnesses, and protective casings. Each battery has its advantages and disadvantages. For example, lead-acid batteries are low in cost and good in safety, but have low specific energy, resulting in high weight. Nickel-cadmium batteries have good stability, but there is some pollution. The safety of lithium batteries is poor, and a battery management level is required, resulting in high prices and so on. Simply put, it is to pay attention to the energy density and weight per unit volume of the battery. For a battery pack of the same weight, the higher the energy density of the battery, the more energy it can store, and the longer the mileage of the vehicle. At the same energy density, the smaller the size and weight of the battery, the lower the spare mass of the vehicle and the more cargo it can carry. Of course, when we buy an electric concrete mixer truck, we should also pay attention to the safety performance of the battery. We must not just look at the battery parameters blindly. We should choose battery products from major manufacturers with materials such as precision insulation treatment, insurance design, and high-temperature resistance.

Electronic control system

Compared with motors and batteries, the electronic control system is complex, including the vehicle control system, motor control system, and BMS battery management system modules. As the nerve of the electric tractor truck, the electronic control system is responsible for receiving and transmitting signal instructions from various parts of the vehicle. I believe that friends who have electric trucks or are concerned about electric trucks know that the engines and battery packs of some vehicles are from major manufacturers, but in actual driving and operation, there is a certain gap between the vehicles.

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