Prismatic Battery Pack Bus Bar Turns for Heat Dispersion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional battery packs face challenges in dissipating heat from abnormally heated prismatic batteries, leading to temperature rises and potential damage to adjacent batteries, while also struggling to achieve high output and compact design.
Innovation Solution
A battery pack design featuring a housing with prismatic batteries arranged in rows and connected by bus bars to form parallel and series connections, allowing for heat dispersion across a wider area and enabling higher output and downsizing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If energy density of prismatic batteries is increased, then output of battery pack is improved, but heat generation from abnormally heated batteries increases causing temperature rise in adjacent batteries
Solution Approach 1:
The patent transitions from one-dimensional linear arrangement to two-dimensional matrix arrangement of battery modules, allowing heat to disperse in multiple spatial directions (width and depth) rather than just along a single line, thereby reducing concentrated heat damage to adjacent batteries
2Device complexity
If battery modules are connected in parallel or series with linear arrangement, then electrical connection is simplified, but heat from abnormally heated battery concentrates on adjacent batteries in the same module
Solution Approach 1:
The patent arranges battery modules in a two-dimensional matrix with rows and columns, creating spatial separation in both width and depth directions. This multi-directional layout ensures that heat from an abnormally heated battery disperses across a wider area rather than concentrating on immediately adjacent batteries in a linear sequence
Solution Approach 2:
The patent introduces bus bars as intermediary thermal and electrical connection elements that span across multiple modules. These bus bars act as heat sinks and thermal pathways that can conduct heat away from abnormally heated batteries to other areas, preventing localized heat concentration
3Power
If more battery modules are added to increase output, then power is improved, but battery pack size increases making downsizing difficult
Solution Approach 1:
The patent utilizes two-dimensional matrix arrangement to pack battery modules more efficiently in space, allowing higher power output within a compact footprint by optimizing the spatial utilization in both width and depth directions rather than simply extending in one direction
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
The design effectively disperses heat from abnormally heated batteries, reducing the risk of damage to other batteries and enabling a compact, high-output battery pack.
Implementation Method 1
increasing amounts of heat are conducted to other prismatic batteries from the abnormally heated prismatic battery
Data Source
AI summary
A battery pack includes a plurality of bus bars serving to form a plurality of parallel battery structures that each have parallel connection of two or more of a plurality of prismatic batteries. The plurality of bus bars electrically connect the plurality of prismatic batteries to connect the plurality of parallel battery structures in series. The plurality of parallel battery structures connected in series form a battery connection structure that includes a turn causing a reversal of direction of series connection of the plurality of parallel battery structures.