Battery cabinet battery working current detection

What is a battery current sensor?

Battery current sensors are essential for maintaining the efficiency, safety, and longevity of modern battery systems. Their key functions include: Monitoring charging and discharging cycles to prevent overcharging or deep discharging. Supporting start-stop systems by ensuring the battery has sufficient charge to restart the engine.

How to monitor the status of an EV battery?

There are a variety of current sensing technologies that can monitor the status of an HEV or EV battery. The solution varies with the voltage and capacity of the battery. As shown in Figure 1, there are two main locations where you can measure current: top of stack (high-side sensing) and bottom of stack (low-side sensing). Figure 1.

How does a battery sensor work?

Start-Stop Systems: In ICE vehicles, the sensor ensures the battery can handle frequent engine restarts without compromising performance. Battery Management Systems (BMS): In EVs and hybrids, the sensor feeds critical data to the BMS, which controls charging, discharging, and thermal management.

What is a Lem battery current sensor?

As a global leader in electrical measurement, LEM offers a portfolio of high voltage and low voltage battery current sensors designed for the most demanding automotive and energy applications. Each product combines high accuracy, compact design, and robust performance. Accuracy up to 0.5% over full T°C range. Precise current sensing at 50mA offset.