BYD puts battery cells directly in cooling liquid in new patent carnewschina.com

BYD’s patent application CN 122868832 A describes an energy-storage battery cabinet with cell modules submerged in dielectric fluid in a lower chamber, while electrical equipment sits in a separate dry upper chamber. Filed in March 2025 and published by China’s patent office on October 5, 2026, it routes electrical connections through the upper part of the liquid compartment to reduce pressure on the seals; the application remains under examination and does not indicate a production plan.