High Energy Propulsion Battery System (HEPBAS)

Important results from the project

The project aimed to develop a certifiable battery pack with high energy density for electric aircraft. The project has created a clear picture of what is required of a battery pack for electric aircraft. Clear specifications have been established, covering technical requirements, certification requirements of the product and the organizations. A scale prototype of the battery is built and tested against several requirements. Heart´s innovation and customer capabilities have significantly improved for batteries for electric aircraft, where certification has a key component.

Expected long term effects

Through the collaboration between Heart Aerospace and ElectroFlight (later Evolito), the project has established eligibility requirements for a certifiable battery, built a prototype, and tested the prototype against several of the eligibility requirements set for a flight-worthy battery. The battery prototype represents a small fraction of the total battery capacity required for the ES-30. The ability to order has been strengthened in both organisations.

Approach and implementation

During the project, RISE and Baines Simmons left. Heart led requirements and certification work, while Evolito did battery development. The pandemic prevented physical meetings in favor of regular virtual meetings. The regularity facilitated the understanding and rapid handling of changes such as switching from CS-23 to CS-25, updating from ES-19 to ES-30, Evolito´s acquisition of ElectroFlight, and reassignment of testing due to sensitive IP. Although Evolito did not become a battery supplier for the ES-30, project partners continued due to increased innovative capacity.