Parallel Cooling Line Layout for Uniform Battery Module Temperatures
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In electric and hybrid vehicles, existing battery systems face temperature spreads within battery modules due to insufficient refrigerant flow at low external temperatures, leading to inadequate cooling and potential damage to cells.
Innovation Solution
A battery module with a cooling apparatus featuring perpendicular first and second lines that absorb and transfer heat from cells to a fluid, ensuring uniform cooling by maintaining a consistent flow direction and connecting these lines in series or parallel configurations to maintain uniform temperature across all cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a refrigerating circuit is used for temperature management of battery modules, then cooling capacity is improved, but at low external temperatures the pressure difference falls and mass flow becomes insufficient leading to temperature spreads
Solution Approach 1:
The cooling circuit is segmented into multiple independent cooling lines (first cooling line and second cooling line) that can operate independently. Each line is equipped with its own circulation pump, allowing individual control of flow rates to maintain temperature uniformity across different operating conditions
Solution Approach 2:
The system dynamically adjusts the flow rates in each cooling line using controllable circulation pumps. The control unit monitors temperature differences and actively regulates pump speeds to compensate for varying pressure differences and mass flows, especially at low external temperatures
2Temperature
If the first line and second line extend perpendicularly to the cells, then heat transfer efficiency is improved, but the device complexity increases
Solution Approach 1:
The perpendicular cooling lines serve multiple functions: they provide primary cooling through direct heat transfer from cell surfaces, act as temperature sensing pathways, and enable flow distribution to multiple cells simultaneously. This multi-functionality justifies the increased structural complexity
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 solution ensures efficient and uniform cooling of battery modules, preventing temperature spreads and extending the service life and performance of electric and hybrid vehicles by maintaining optimal cell temperatures.
Implementation Method 1
heat can be transferred from the cells of the battery module to the fluid
Implementation Method 2
The first line and the second line carry a fluid, wherein heat can be transferred from the cells of the battery module to the fluid
Data Source
AI summary
A battery module is provided having a cooling apparatus including at least one first line and at least one second line, wherein the first line and the second line conduct a fluid and absorb heat from cells of the battery module and transfer the heat to the fluid. The first line and the second line extend perpendicular to the cells of the battery module. The first line and the second line are arranged parallel to one another. A flow direction of the fluid in the first line is opposite a flow direction of the fluid in the second line.