Battery Case Cooling Layout With Diagonal Shunt Flow Paths
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing liquid-cooling plates in battery packs suffer from complex pipelines, excessively long flow passages, high pressure drops, and low cooling efficiency, leading to temperature differences and reduced durability.
Innovation Solution
A battery case design featuring an inner support beam with an inner guide passage and opposing shunt elements that guide heat exchange medium diagonally, enhancing heat exchange efficiency and targeting central high-temperature areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If existing liquid-cooling plates are used to cool battery packs, then thermal management is provided, but the pipeline structure becomes complex and flow passage length increases excessively
Solution Approach 1:
The liquid-cooling plate is segmented into multiple independent cooling channels arranged in parallel. Each channel is a separate flow passage that can be independently optimized, reducing the overall complexity of the pipeline system while maintaining effective cooling coverage across the battery pack surface.
Solution Approach 2:
The cooling channels are arranged in a two-dimensional grid pattern on the liquid-cooling plate surface, transitioning from a single-dimensional linear flow to a multi-dimensional distributed network. This dimensional change reduces the required flow passage length while improving cooling uniformity across the battery pack.
2Temperature
If existing liquid-cooling plates with optimized flow passages are used, then thermal management is improved, but pressure drop in flow passages increases
Solution Approach 1:
The flow system is segmented into multiple parallel channels, distributing the total flow rate across several paths. This segmentation reduces the flow velocity and pressure drop in each individual channel while maintaining the same overall cooling capacity, as the pressure drop is inversely proportional to the number of parallel channels.
Solution Approach 2:
The channel cross-sectional area and hydraulic diameter are optimized to reduce flow resistance. By adjusting these geometric parameters, the pressure drop is minimized while maintaining adequate heat transfer coefficients, achieving a balance between cooling efficiency and pressure loss.
3Temperature
If existing liquid-cooling plates are used, then cooling is provided, but temperature differences between different locations of battery packs increase
Solution Approach 1:
The cooling plate is divided into multiple discrete cooling channels distributed across the cooling surface. This segmentation allows for localized cooling zones that can be precisely positioned over high-temperature areas of the battery pack, reducing temperature differences between different locations through targeted thermal management.
Solution Approach 2:
Different regions of the liquid-cooling plate are equipped with cooling channels of varying densities and configurations according to the local heat generation characteristics of the battery pack. Areas with higher heat generation receive more intensive cooling, while cooler areas receive less, achieving uniform temperature distribution across the entire battery pack.
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 simplifies pipeline complexity, reduces pressure drops, and improves cooling efficiency by prioritizing central heat exchange, reducing temperature differences and maintaining optimal battery performance.
Implementation Method 1
the battery module exchanges heat with the liquid-cooling assembly
Implementation Method 2
liquid-cooling solutions adopted in thermal management design commonly used in the industry now mainly adopts liquid-cooling plates for cooling
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present disclosure discloses a battery case, which includes a case body and a liquid-cooling assembly. The case body is provided with an inner support beam. The inner support beam is provided with an inner guide passage and an output pipe connector in communication with the inner guide passage. The liquid-cooling assembly is mounted in the case body, and includes a first shunt element and a second shunt element arranged opposite to each other. The inner guide passage is arranged between the first shunt element and the second shunt element, and the first shunt element and the second shunt element are both in communication with the output pipe connector. The first shunt element guides the heat exchange medium to be transmitted along a diagonal direction thereof, while the second shunt element guides the heat exchange medium to transmit along a diagonal direction thereof.