Power battery is the core component of new energy vehicles, and its performance and quality are directly related to the vehicle's cruising range and safety. Therefore, the detection and evaluation of power battery is particularly important. Power battery detection can evaluate the battery from multiple angles, including battery capacity, internal resistance, temperature, SOC and so on. Among them, battery capacity is one of the most important indicators, which directly determines the vehicle's cruising range.
Battery capacity testing usually uses a discharge test, by recording the battery at different constant current discharge time, to determine the size of the battery capacity. In addition to battery capacity, battery internal resistance is also an important indicator. Battery internal resistance is usually determined by factors such as battery material, structure and manufacturing process, and is one of the key factors affecting battery performance and life.
Temperature is also an important factor in battery performance and life, because high temperature will cause the battery's chemical reaction speed to increase and thermal runaway, which will affect battery life.
SOC refers to the state of charge of a battery and is one of the key indicators for evaluating battery performance and life. Because the accuracy of SOC is related to the service life and protection of the battery, the accurate detection of SOC is very important.
These indicators can be monitored and controlled in real time through the battery management system to improve battery performance and life, while ensuring the safety and stability of the vehicle.
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