Heated Resin Separators for Uniform Battery Module Warming
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Solution Overview
Problem
Conventional battery modules suffer from inefficient heat insulation as heat generated by the heater substrate escapes from surfaces not in contact with the battery stack, leading to suboptimal heating efficiency.
Innovation Solution
Incorporating resin separators with a heater function between adjacent battery cells, ensuring heat is generated and retained within the module by using resin separators with integrated metal heater patterns to enhance heating efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a heater substrate is installed on the bottom surface of the case, then the battery stack can be heated when temperature is low, but heat escapes from the surface not in contact with the battery stack, resulting in poor heating efficiency
Solution Approach 1:
The heater function is merged with the resin separator that is already positioned between adjacent battery cells. By integrating the heating function into the separator structure, the heat is generated directly at the interface between battery cells, eliminating the need for a separate heater substrate and preventing heat escape to the external environment.
Solution Approach 2:
The resin separator acts as an intermediary component that serves dual purposes: electrical insulation between battery cells and heat generation through integrated heating elements. This intermediary structure efficiently transfers heat between adjacent battery cells while preventing heat loss to the case or external environment.
2Temperature
If a heater substrate is installed on the bottom surface of the case, then heating function is provided, but additional heat conductive sheets are required to improve heating efficiency
Solution Approach 1:
The heater function is merged with the resin separator that is already positioned between adjacent battery cells. By integrating the heating function into the separator structure, the heat is generated directly at the interface between battery cells, eliminating the need for a separate heater substrate and preventing heat escape to the external environment.
Solution Approach 2:
The resin separator is designed to perform multiple functions simultaneously: electrical insulation between battery cells, structural support within the battery module, and heat generation through integrated heating elements. This multi-functionality eliminates the need for separate heater substrates and heat conductive sheets, reducing overall device 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
The solution improves heat insulation by minimizing heat escape, allowing for efficient and uniform heating of battery cells without the need for additional heat conductive sheets.
Implementation Method 1
the first resin separator has a heater function capable of generating heat
Implementation Method 2
the generated heat does not easily escape to the outside, and the efficiency of heating (heat insulation) can be improved
Data Source
AI summary
A battery module includes n stacked battery cells; and m resin separators inserted between the stacked adjacent battery cells, in which at least one of the m resin separators has a heater function capable of generating heat. n represents an integer of 2 or more, and m is represented by the following formula: m=n−1.