Battery Pack Liquid Cooling Layout With Fewer Joints and Shorter Paths
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Solution Overview
Problem
Existing liquid cooling devices for batteries face challenges in cost and safety due to increased joints in parallel configurations and longer cooling paths in series configurations, affecting service life and temperature consistency.
Innovation Solution
A liquid cooling device with multiple liquid cooling units connected in parallel, where each unit has multiple liquid cooling pipes connected in series, forming an accommodation space between adjacent pipes to reduce joint count and temperature differences, thereby improving safety and reducing production costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If liquid cooling devices use parallel connection with multiple joints to separate flows, then cooling effectiveness is improved, but the number of joints increases leading to higher cost and safety risks
Solution Approach 1:
The liquid cooling device is divided into multiple independent liquid cooling units, each handling a specific region of the battery pack. This segmentation allows the system to achieve parallel cooling functionality while minimizing the number of joints within each unit, thus reducing leakage risks while maintaining cooling effectiveness.
Solution Approach 2:
The patent transitions from a single-plane parallel connection to a multi-dimensional arrangement where liquid cooling units are distributed across different spatial dimensions. This allows the system to achieve parallel cooling without requiring numerous joints in a single plane, thereby improving safety while maintaining cooling performance.
2Reliability
If liquid cooling devices use series connection to reduce joints, then safety and cost are improved, but the cooling path becomes longer causing larger temperature differences
Solution Approach 1:
The battery pack is divided into multiple regions with dedicated liquid cooling units for each region. This segmentation creates multiple shorter cooling paths in parallel, ensuring that no single path becomes excessively long, thereby maintaining temperature consistency while reducing the total number of joints compared to a fully parallel system.
Solution Approach 2:
The patent arranges liquid cooling units and batteries in a multi-dimensional spatial configuration, allowing the cooling system to serve multiple battery regions simultaneously through strategically positioned units. This dimensional arrangement optimizes cooling path lengths across different spatial zones, reducing temperature differences while minimizing joint requirements.
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 configuration reduces the number of joints, decreases production costs, enhances safety, and improves temperature consistency within the battery pack by shortening the liquid cooling path and maintaining efficient heat exchange.
Implementation Method 1
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
Implementation Method 2
a liquid cooling device is utilized to liquid-cool the battery
Data Source
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AI summary
A liquid cooling device and a battery pack are provided. The liquid cooling device includes a plurality of liquid cooling units (100) connected in parallel. Each of the liquid cooling units (100) includes at least one liquid cooling pipe (101), the liquid cooling pipe (101) in at least one of the liquid cooling units (100) is multiple in number, and the plurality of the liquid cooling pipes (101) are connected in series. An accommodation space for accommodating batteries is formed between adjacent two of the liquid cooling pipes (101).