Leading global automaker selects Eaton to supply battery disconnect units for multiple EV models

17 May 2023

Eaton, the smart energy management company, today announced that its eMobility business has been awarded a contract to supply its Battery Disconnect Unit in 400 and 800 volt configurations to a global automobile manufacturer for use in electric passenger vehicles. Eaton's BDU integrates its Breaktor ® circuit protection technology into electric vehicles (EVs), which reduces complexity and cost. Eaton will showcase this technology at “The Battery Show” in Stuttgart (Germany) from May 23 to 25, 2023, and will lead a discussion on functional safety in electric vehicle systems on May 25 at the conference.

“We are thrilled to introduce such a crucial part of the EV system with industry-leading safety and efficiency features to this world-class automotive manufacturing company,” said Mark Schneider, president of eMobility. “Our BDU integrates our Breaktor ® circuit protection technology , Bussmann ™ fuses and advanced busbars from Royal Power Solutions to provide complete electrical protection for the EV system, in a compact and efficient package.”

The main function of the BDU is to serve as a battery on/off switch, depending on how the EV is operating – while charging or driving. Most electric vehicles today rely on one of three traditional circuit protection configurations in the BDU: fuse and contactor; pyrofuse and contactor; or fuse, pyrofuse and contactor all used together in a single BDU. While all provide switching and protection functions, each has disadvantages, including overall system complexity, ease of maintenance, coordination difficulties, and susceptibility to fatigue under high current levels.

Adding Breaktor ® circuit protection technology to the Eaton BDU provides additional functionality and benefits, including replacement of up to four high voltage electrical components, which reduces complexity and cost at the system level; active and passive actuation in a single device; and the ability to restart after a high power failure. In total, the Eaton BDU eliminates the need for up to 15 additional system components.

Innovative busbars with a low-profile, space-saving design without weight-saving heatsinks have been designed into the BDU. Eaton also utilizes an automated assembly process to provide superior safety, reduce production time and deliver maximum cost savings with little material waste and near-zero development time for production products. This power connections technology was designed by Royal Power Solutions, acquired by Eaton in 2022. Eaton's Bussmann ™ series fuses were also leveraged to ensure optimal BDU performance.

“With the Breaktor and our Power Connections solutions, Eaton is uniquely positioned to create differentiated electric vehicle solutions for its international customers,” said Schneider.

Learn more about Eaton's BDU and other electric vehicle solutions .

Eaton is an intelligent energy management company dedicated to improving the quality of life and protecting the environment for people everywhere. We are guided by our commitment to doing business right, operating sustainably and helping our customers manage energy – today and in the future. By harnessing the worldwide growth trends of electrification and digitalization, we are accelerating the planet's transition to renewable energy, helping to solve the most pressing global energy management challenges and doing what is best for our shareholders and society at large.

Founded in 1911, Eaton is celebrating its 100th anniversary as a listed company on the New York Stock Exchange. We report revenues of $20.8 billion in 2022 and serve clients in more than 170 countries. For more information, visit www.eaton.com . Follow us on Twitter and LinkedIn .

The original language text of this announcement is the official authorized version. Translations are provided as a convenience only and must refer to the original language text, which is the only version of the text that is legally binding.

Thomas Nellenbach
[email protected]
(216) 333-2876 (cel.)