Battery Pack Ribs for Cooling and Assembly Stability
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Solution Overview
Problem
Battery packs face challenges in maintaining stable assembly and efficient cooling of secondary batteries, particularly in vehicles where heat generation and vibrations are prevalent, leading to reduced battery lifetime and inconvenient assembly processes.
Innovation Solution
The battery pack design incorporates a frame with ribs that support and securely hold secondary batteries, featuring ventilation paths and grooves for efficient air circulation and connection taps for easy electrical connections, ensuring stable assembly and effective cooling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If secondary batteries are closely arranged to increase energy density, then the battery pack capacity is improved, but the cooling efficiency deteriorates due to reduced air circulation space
Solution Approach 1:
The battery pack is segmented into multiple battery rows with ribs positioned between them, creating separated cooling channels that allow air circulation even when batteries are closely arranged. This segmentation enables maintaining high battery density while preserving cooling pathways.
Solution Approach 2:
The cooling system transitions from a two-dimensional planar arrangement to a three-dimensional structure by adding ribs that extend vertically between battery rows, creating multi-level cooling channels that maximize air circulation in the available space.
2Stability of the object's composition
If rigid fixation structures are used to maintain stable battery assembly, then assembly stability is improved, but the assembly process becomes more complex and time-consuming
Solution Approach 1:
Instead of using complex rigid fixation structures to hold batteries in place, the invention inverts the approach by using simple ribs with grooves that passively guide and stabilize battery placement through their geometric shape, reducing assembly complexity while maintaining stability.
Solution Approach 2:
The ribs with supporting grooves are designed to self-align and stabilize the secondary batteries during assembly without requiring additional fixation mechanisms or complex alignment procedures, allowing the structure to serve its own positioning function.
3Temperature
If ventilation paths are enlarged to improve cooling, then cooling efficiency is improved, but the battery pack volume increases
Solution Approach 1:
The ventilation paths are optimized locally within the rib structures positioned between battery rows, providing targeted cooling channels exactly where heat generation occurs, rather than requiring large overall ventilation spaces that would increase pack volume.
Solution Approach 2:
The rib structures incorporate multiple ventilation paths and holes that create a porous-like flow network, allowing efficient air circulation through the battery pack without requiring large open spaces, thus maintaining compact volume while achieving effective cooling.
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 stabilizes secondary battery assembly, enhances cooling efficiency, and simplifies the assembly process by maintaining secure positioning and maximizing air circulation, thereby extending battery life and reducing operational inconvenience.
Implementation Method 1
Adjacent first ribs may include a ventilation path for circulating air. The ventilation paths are connected to the ends of the first ribs and connected to the frame. The frame may include a plurality of ventilation holes for connecting air inside of the frame and air outside of the frame.
Data Source
AI summary
A battery pack includes a battery group including battery rows consecutively disposed adjacent to each other, with the battery rows including secondary batteries disposed parallel to each other and spaced apart from each other, a frame for surrounding the battery group, and a plurality of first ribs that are each disposed between adjacent battery rows. The first ribs include supporting grooves that are formed in lateral surfaces of the first ribs and accommodate portions of edges of the secondary batteries, and ends of each of the first ribs are coupled to the frame.