Electric Battery Thermal Management ready for series production
The Webasto batteries are integrated with the eBTM via standardized water connections and matched high-voltage connectors. The Webasto system elements communicate to determine the delta between battery cell temperature and the corresponding setpoint in real time.
Maier says: "To be able to guarantee the optimum battery cell temperature, our eBTM decides independently whether heat or cold has to be provided. In this way, the Webasto system ensures a stable battery cell temperature, regardless of the outside temperature and the electrical load."
As simple as this sounds, the technical implementation turned out to be difficult. In the end, the team developed a system that already included all necessary components, such as pumps, heat exchangers, and power electronics. "The advantage of the 'plug-and-play' system is that it can be used immediately with no further development work," says Maier.
Keeping batteries reliably at an optimum operating temperature: What reads like a vision of the future is now ready for series production at Webasto. The eBTM is already working reliably in various prototypes from vehicle and construction machinery manufacturers. Soon, thermal management for batteries could be standard in large electric vehicles and machines on the world's roads and construction sites.