(19)
(11) EP 4 816 215 A1

(12)

(43) Date of publication:
07.10.2026 Bulletin 2026/41

(21) Application number: 24821715.0

(22) Date of filing: 25.11.2024
(51) International Patent Classification (IPC): 
B60L 53/22(2019.01)
H02M 1/00(2006.01)
(52) Cooperative Patent Classification (CPC):
B60L 53/22; H02J 2207/20; H02M 1/0058; H02M 1/007; H02M 3/33584; H02M 3/33573; H02M 3/33576; H02M 1/4208; H02M 1/0032; H02M 1/0009; Y02T 10/70; Y02T 10/7072
(86) International application number:
PCT/US2024/057283
(87) International publication number:
WO 2025/117447 (05.06.2025 Gazette 2025/23)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA
Designated Validation States:
GE KH MA MD TN

(30) Priority: 01.12.2023 US 202318526989

(71) Applicant: Atieva, Inc.
Newark, CA 94560 (US)

(72) Inventors:
  • DEY, Saikat
    Newark, CA 94560 (US)
  • LUO, Yukun
    Newark, CA 94560 (US)
  • CHAI, Shan
    Newark, CA 94560 (US)

(74) Representative: Gulde & Partner 
Patent- und Rechtsanwaltskanzlei mbB Berliner Freiheit 2
10785 Berlin
10785 Berlin (DE)

   


(54) IMPROVING EFFICIENCY IN A DUAL-ACTIVE BRIDGE OF A DC-DC STAGE