MAXIMUM PERFORMANCE, LONGER SERVICE LIFE AND SHORTER CHARGING TIME WITH THE WEBASTO EBTM
Electrical Battery Thermal Management (eBTM) complements Webasto’s product portfolio with a compact and scalable system that keeps traction batteries in trucks, vans, buses and construction machinery within the ideal temperature range at all times.
This allows the batteries to deliver their maximum operating performance, regardless of the outside temperature and load, and achieve the longest possible life cycle – it also facilitates more rapid charging.
Ideal temperatures for maximum capacity
The eBTM, which is precisely tailored to the requirements of traction batteries, allows continuous monitoring of the operating temperature and ensures that the heating and cooling circuits are balanced in order to maintain the battery temperature in the ideal range of approx. 22 degrees at all times. Depending on the vehicle type, application and number of batteries installed, several units can be combined. The eBTM dynamically adjusts the temperatures through the different load phases. It is moreover capable of conditioning the batteries during charging, thereby halving the charging time.
The system solution is designed for 400- as well as 800-volt applications and delivers up to 8 kilowatts (kW) of cooling and up to 10 kW of heating power for battery systems having a total capacity of up to 210 kilowatt hours (kWh). Thanks to its compact dimensions of 100 x 70 x 30 (L x W x H) centimeters, low weight of just 90 kilograms and just a few connection interfaces, the plug-and-play system is easy to install and can be taken into operation quickly. The components for the coolant and heating circuits, electric water pumps and control units are already fitted inside the eBTM housing.
The benefits in figures
The eBTM from Webasto is highly efficient, thereby saving essential battery capacity in everyday service. The solution allows batteries to be charged using up to 41 percent more power compared to batteries without thermal management. The accelerated power input results in a significantly reduced charging time. For a driving profile having a high frequency of starts and stops, thermal management provides 8.9 percent more range, resulting partly from 24 percent greater energy recuperation at low temperatures. Under hot climatic conditions, the eBTM furthermore improves the “state of health” by 21 percent.