What is a Battery Sensor?

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Editorial Team - everything PE

Feb 21, 2022

Battery sensor is used to precisely monitor/measure the current, voltage, and temperature of rechargeable batteries. It provides real time status information such as state of charge (SOC), state of health (aging), and state of function (SOF) parameters of batteries.

Battery sensor is a mechatronic device that features sensor modules with necessary electronics & integrated battery detection algorithm. The mechanical parts include shunt resistors for measuring current, battery clamp for installing with the battery terminal, threaded bolt for attaching the ground cable, and a plug connector for interfacing with energy management systems.

  • State of Charge (SOC) represents how much charge is available in the battery. SOC (%) of a battery cell refers to the ratio of the remaining charge of a battery to its rated capacity. If SOC is 50%, then the battery is in a half-charged state.
  • State of health (SOH) indicates the ability of the battery to receive and deliver energy as compared to its ideal conditions. SoH value of battery will be 100% at the time of manufacture and will decrease over time and use. 
  • State of function (SoF) reflects battery readiness in terms of usable energy by observing state-of-charge in relation to the available capacity.

Battery sensor maximizes the battery life by avoiding deep discharge and supports fuel saving and CO2 emission reduction technologies such as smart alternator control, and start/stop or recuperation. It is ideal for use in light commercial vehicles,  hybrid vehicles, UPS, electric forklifts, golf carts, emergency lighting, medical beds, and solar panel monitoring.