BYD: cool the connections, not only the cells
Battery cells are only part of a pack’s thermal story. Electrical connections can need their own carefully engineered cooling path.
Canvas of Knowledge · 14 November 2026 · Illustrated explainerThe problem
The disclosure identifies limited heat removal from connecting sheets cooled passively by air. A hot connection can become a bottleneck even when neighbouring cells are cooled.
The proposal
A main plate cools the cells, while additional plates with cooling channels address the connecting sheets. The architecture separates two thermal jobs inside the battery assembly.
The evidence
EP4567964A1 is a European application publication dated 11 June 2025, naming BYD as applicant. Its disclosure illustrates an approach; it does not prove use in every BYD pack.
THE IDEA TO KEEPInnovation can hide in the small components joining the larger ones.
Cooling system for battery, battery pack, and vehicle
- Publication
- EP4567964A1
- Document
- European patent application publication
- Applicant at filing
- BYD Company Limited
- Earliest priority
- 2022-08-02
- Filing
- 2023-08-02
- Publication
- 2025-06-11
This record does not establish implementation in a production vehicle. Document type is not a statement of current enforceability.
Sources & further reading
Sources reviewed 14 November 2026. Specifications and availability depend on the product, market and date. Source organisations do not endorse this website.