Battery Module Housing With Thermal Adhesive for Dense Cell Packing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Lithium-ion battery cells face challenges in thermal management and packing efficiency, particularly in applications like electric rickshaws, where high energy density is required but thermal conductivity and space optimization are critical.
Innovation Solution
A battery module design featuring a thermal conductive housing with a non-conductive bottom cell holder and thermally conductive adhesive, allowing direct thermal energy transfer between cells and housing while maintaining electrical insulation, along with a battery enclosure that thermally connects with the module for efficient heat management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If battery cells are densely packed to increase energy density, then space efficiency improves, but thermal management becomes more difficult
Solution Approach 1:
A thermally conductive adhesive is introduced as an intermediary material between the battery cells and the housing. This adhesive serves as a thermal pathway that efficiently conducts heat away from the densely packed cells while maintaining their compact arrangement. The adhesive layer fills gaps and ensures intimate thermal contact without requiring additional thermal management components that would consume space.
2Temperature
If thermally conductive materials are used to improve heat transfer, then thermal management improves, but electrical insulation may be compromised
Solution Approach 1:
The housing is constructed as a composite structure with an outer thermally conductive layer and an inner electrically insulating layer. This multi-layer composite material simultaneously provides efficient thermal pathways for heat dissipation while maintaining electrical insulation between the conductive housing and the battery cells. The composite structure resolves the conflict between thermal conductivity and electrical insulation by combining materials with complementary properties.
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 enhances thermal management and space efficiency, ensuring effective thermal energy transfer and preventing electrical shorts, thereby improving the performance and reliability of lithium-ion battery modules in energy storage applications.
Implementation Method 1
thermal energy can be transferred directly between the cells and the housing of the battery module
Implementation Method 2
A pressing member can be arranged on one of the walls opposite of the thermal plate, to press the battery module against the thermal plate
Data Source
AI summary
A battery module includes a thermal conductive housing. A plurality of cells are arranged within the housing. An electrically insulated bottom cell holder is located between the plurality of cells and the housing. The bottom cell holder has a network of positions in which each of the plurality of cells are inserted and held. Each of the positions has an offsetting member that creates a space between the plurality of cells and a first side of the housing. A thermal adhesive occupies the space, thereby fixing each of the plurality of cells to the housing. Other aspects are described.