The current sensor module provides current and temperature information to ensure the safety and longevity of the high voltage battery. The battery is the most expensive component of an electric vehicle. The current sensor module must not only protect them from overcurrent, but also preserve the properties of the battery, limiting the effects of aging. This technology provides two key pieces of information for battery protection and reliable range control.
Lithium-ion batteries store a large amount of energy. Physical impacts cause the battery to heat up during charging and discharging, especially when charging at high power quickly or when driving sports. To avoid overloading the car battery, the current must be regulated to limit the temperature. The current sensor module also helps to calculate the exact remaining range by monitoring the current consumption of the battery.
The current sensor module not only optimizes the efficiency of the charging process and protects the battery, but also helps to detect mechanical failures that can quietly start a fire. This year, the production of an electric car from a global car manufacturer will begin.
Battery shock detection
An electric vehicle's lithium-ion battery is placed under the floor, where its weight contributes to a low center of gravity and where it is well protected by the vehicle's structure. At low speeds, contact with the ground during a parking maneuver can also cause damage. For this reason, electric vehicles are equipped with a large and often heavy cover that protects the battery compartment from below.
In the event of an impact, the driver must decide for himself whether the vehicle needs to be checked out by a workshop. To correct this and provide light underbody protection, a battery impact detection system based on a pressure sensor was developed.
The system detects and classifies impacts or penetrations under the body to alert the driver to possible battery damage. The car owner can take precautions before a faulty battery can catch fire later on.