Liquid-Cooling Pipeline Layout for Uniform Battery Pack Temperature

The cooling system is segmented into multiple independent cooling circuits, each serving a specific battery pack or group of battery packs. This segmentation allows for independent flow control and temperature management in each circuit, preventing the temperature uniformity problems that arise in large-scale series-connected systems.

The patent introduces a hierarchical pipeline structure with multiple dimensions: main pipelines at the system level, branch pipelines at the battery pack level, and sub-branches at the battery module level. This multi-dimensional arrangement optimizes coolant distribution and maintains temperature uniformity across the entire system.

The cooling system is divided into multiple parallel cooling circuits rather than a single series connection. Each circuit is further segmented into branch pipelines serving different battery packs, allowing independent flow management and maintaining temperature uniformity without excessive complexity.

The patent incorporates adjustable flow control valves in each branch pipeline, enabling dynamic adjustment of coolant flow distribution. This dynamic control allows the system to adapt to varying thermal loads and maintain optimal temperature uniformity under different operating conditions.

Gas separation and removal functions are extracted from the main cooling circuit through dedicated gas separation devices installed at strategic locations. This extraction approach allows gas to be removed without disrupting the main cooling flow, preventing gas accumulation while maintaining system simplicity.

Gas separation is performed preliminarily at multiple points along the cooling circuit before gas can accumulate and cause problems. By proactively removing gas at each branch connection point, the system prevents harmful gas buildup without requiring complex gas management mechanisms.

The extensive cooling network is segmented into multiple independent circuits and branches, each optimized for its specific service area. This segmentation ensures adequate cooling coverage across all battery packs while maintaining temperature uniformity through independent flow control in each segment.

Each branch pipeline and cooling circuit is designed with local optimizations, including appropriately sized pipes, flow control valves, and cooling channels tailored to the specific thermal characteristics of the served battery packs. This local quality approach ensures uniform temperature distribution across the entire system despite the large number of pipelines.