Purpose of battery cabinet thermal management system

A battery thermal management system (BTMS) is a component in the creation of electric vehicles (EVs) and other energy storage systems that rely on rechargeable batteries. Its main role is to maintain the temperatures for batteries ensuring their battery safety, efficiency and lifespan.

Introduction As lithium battery energy storage systems (BESS) become increasingly powerful and compact, managing heat generation has emerged as a critical challenge. Without effective thermal control, systems risk performance degradation, shortened lifespan, and, in worst cases, thermal runaway.

Thermal Control Unit: This component manages all activities in the battery thermal management system, including processing power from sensors, setting fan speeds, operating liquid pumps, and controlling heat elements. Additionally, this control system is typically integrated with the Battery Management System (BMS).

The battery thermal management system performance can generally disrupted if it's located in an area with excessively high or low temperatures. Solution: Add a heating system (PTC heater) and thermal insulation when extreme temperatures occur.

PCM typically utilizes materials that can absorb or release heat during phase changes to regulate battery temperature. The material used in this type of battery thermal management system is generally one that can change shape from a solid to a liquid and back again.

In liquid-based battery thermal management systems, a chiller is required to cool water, which requires the use of a significant amount of energy. Liquid-based cooling systems are the most commonly used battery thermal management systems for electric and hybrid electric vehicles.