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BMS (Battery Management System) is basically an electronic device that protects the rechargeable battery or battery pack (also known as battery) against exceeding the specified safe operating limits and monitors its operating performance. In general terms, it is a system used for security purposes to ensure that the battery cell or battery pack in which it is used does not fail or pose a danger against overload or unbalanced loading situations. The battery protection circuit controls the voltage balance between the cells in the battery group to which it is connected, its temperature, the current values passing through it, calculates the data and transfers these data to the external environment according to its type.

BMS what is operation principle and its elements

Which Values Does a BMS Control?

A BMS generally controls and transmits data by measuring the following data;
  • Voltage : Voltage value inside the cell, voltage balance between cells, overall battery voltage
  • Current : Current value inside and outside the cell, leakage current probability
  • Temperature: Temperature of cells, ambient temperature, coolant inlet and outlet temperature,
  • Charge Level : Charge levels of cells (SoC, DoD)
  • Max Current Limit : Charge and discharge current limit (CCL, DCL)
  • Operating Value : Operating time since first use and total energy supplied
In cases such as high current draw from the battery, high voltage during charging, overheating of the pack, leakage current or increased intracellular pressure, the BMS is activated to shut down the system and prevent danger. In addition to its safety function, the BMS performs inter-cell balancing to keep the performance of the battery pack at the highest level and optimizes the system by taking energy from the fullest cell and transferring it to the lowest cell.

What are the Types of BMS?

These devices are divided into two groups according to the type of cell they are used in and whether they have communication features. They are divided into two as Lithium Ion (NMC) BMS and Lithium Iron Phosphate (LiFePO4) BMS according to the type of battery cell they will be used. In addition, those that have communication features in terms of transmitting the measured data to the external environment are called Smart BMS and those that do not are called Standard BMS. Apart from the above-mentioned types of BMS, the technical specifications and configuration of BMSs are determined by the arrangement and capacity of the battery pack. For example, if only a single battery cell is to be controlled, a 1S BMS is used. A BMS model with a communication port to be used in a battery pack with 8 series connected NMC cells with a maximum current value of 30A is called 8S 30A Smart NMC BMS. As HDA Enerji, you can visit our BMS (Battery protection circuit) product group for our DALY BMS products, the world's leading brand with a wide range of products that we represent, or you can contact our expert team at the contact address.

Frequently Asked Questions About BMS

What is the contribution of BMS to energy efficiency?

It positively improves the energy efficiency of devices by monitoring and controlling the energy consumption of batteries and accumulators.

What is the impact of BMS on sustainability?

It has a positive impact on sustainability by reducing the use of resources, especially energy savings, as well as reducing environmental impacts.

How is BMS maintained and managed?

Routine checks of these devices are as follows; software updates, battery status check, making sure connections and sensors are working properly are important for device maintenance.