Battery Pack Liquid Cooling Layout With Parallel Units and Fewer Joints
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Solution Overview
Problem
Existing liquid cooling devices for batteries face issues with increased costs and safety risks due to multiple joints, and temperature inconsistencies caused by longer cooling paths in series connections.
Innovation Solution
A liquid cooling device with parallel-connected units and series-connected pipes within each unit, forming accommodation spaces for batteries, reducing joint numbers and ensuring consistent temperature distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If liquid cooling pipes are connected in parallel to cool batteries, then cooling coverage is improved, but the number of joints increases leading to higher cost and safety risks
Solution Approach 1:
The liquid cooling system is segmented into multiple independent liquid cooling units, each containing series-connected pipes. This segmentation allows parallel arrangement of units for comprehensive cooling coverage while keeping each unit's internal pipe connection simple (series), thereby reducing the total number of joints and associated safety risks.
2Device complexity
If liquid cooling pipes are connected in series to reduce joints, then cost and safety are improved, but the cooling path lengthens causing larger temperature differences
Solution Approach 1:
The cooling system is divided into multiple liquid cooling units arranged in parallel, with each unit containing series-connected pipes. This segmentation creates multiple shorter cooling paths that can be simultaneously executed, reducing the overall temperature difference while maintaining fewer joints per unit.
Solution Approach 2:
The patent transitions from a single-dimension series or parallel connection to a multi-dimensional arrangement where multiple liquid cooling units are positioned at different locations. This spatial distribution enables simultaneous cooling across different battery regions, reducing temperature differences while maintaining manageable pipe complexity.
3Temperature
If multiple joints are used for parallel liquid cooling pipes, then cooling performance is improved, but liquid leakage risk increases
Solution Approach 1:
The liquid cooling system is segmented into multiple independent units with series-connected pipes within each unit. This segmentation reduces the number of joints per unit, thereby lowering liquid leakage risk while maintaining effective cooling performance through the parallel arrangement of multiple units.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design decreases production costs, enhances safety, and improves temperature consistency within the battery pack while maintaining efficient cooling performance.
Implementation Method 1
a liquid cooling device is utilized to liquid-cool the battery
Data Source
AI summary
A liquid cooling device and a battery pack are provided. The liquid cooling device includes a plurality of liquid cooling units connected in parallel. Each of the liquid cooling units includes at least one liquid cooling pipe, the liquid cooling pipe in at least one of the liquid cooling units is multiple in number, and the plurality of the liquid cooling pipes are connected in series. An accommodation space for accommodating batteries is formed between adjacent two of the liquid cooling pipes.