Layered Battery Housing With Fluid Cooling for Heat and Shock Control
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Solution Overview
Problem
Current energy storage apparatuses, particularly the cell-to-rack type, face challenges in managing heat generated by battery cells and are vulnerable to vibration or external shock, affecting the charge/discharge lifetime and cycle stability of the batteries.
Innovation Solution
The energy storage apparatus incorporates a unique structure with an accommodating body that includes a layered design with internal passages for fluid flow, allowing thermal contact between battery cells and a heat dissipation medium, along with a fan for forced convection, and a resin layer for continuous pressure application to stabilize the battery cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If cell-to-rack type energy storage apparatus is used to simplify structure and reduce components, then device complexity is reduced, but heat management becomes difficult and reliability decreases
Solution Approach 1:
The patent introduces a heat dissipation medium as an intermediary substance that flows through internal passages within the battery cell structure. This mediator enables efficient heat transfer from the battery cells to the external environment, resolving the heat management difficulty while maintaining the simplified cell-to-rack structure.
Solution Approach 2:
The patent employs fluid dynamics by circulating a heat dissipation medium through internal passages using forced convection (via fans). This hydraulic/pneumatic approach enables active thermal management in the simplified cell-to-rack structure, allowing heat to be efficiently removed without adding complex external cooling systems.
2Device complexity
If cell-to-rack type energy storage apparatus is used to simplify structure, then device complexity is reduced, but vulnerability to vibration and external shock increases
Solution Approach 1:
The patent applies beforehand cushioning by designing the accommodating body with shock-absorbing structures and protective configurations before vibration or shock occurs. The layered structure and internal passage design provide inherent protection, cushioning the battery cells against mechanical stresses from vibration and external shocks.
3Temperature
If internal passages with fluid flow are added for heat dissipation, then heat management improves, but device complexity increases
Solution Approach 1:
The patent implements nesting by integrating the internal passages directly within the accommodating body structure itself. The heat dissipation channels are nested within the existing structural framework, allowing heat management functionality to be embedded without adding separate external cooling components, thus minimizing overall device complexity.
Solution Approach 2:
The accommodating body serves multiple functions: it provides structural support, contains the battery cells, and simultaneously acts as the heat dissipation system through its integrated internal passages. This multi-functionality reduces the need for separate dedicated cooling components, maintaining simplicity while achieving effective heat management.
4Device complexity
If battery cells are directly accommodated in rack structure, then device complexity is reduced, but charge/discharge lifetime and cycle stability decrease due to poor heat management
Solution Approach 1:
The heat dissipation medium acts as an intermediary that facilitates thermal energy transfer from the battery cells to the external environment. This intermediary cooling mechanism maintains optimal operating temperatures during charge/discharge cycles, preventing thermal degradation and extending the duration of battery operation and cycle life.
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 effectively manages heat dissipation, enhances the stability and longevity of battery cells by improving heat recovery and shock resistance, thereby extending the charge/discharge cycle life.
Implementation Method 1
the battery cell may be in thermal contact with a fluid passing through the internal passage
Implementation Method 2
the fan may transfer a fluid outside the accommodating body to an internal passage
Data Source
AI summary
An energy storage apparatus of the present disclosure includes an accommodating body including an accommodating portion including a layered structure provided with an accommodating space and an internal passage through which a fluid is allowed to pass, and a battery cell accommodated in the accommodating space, wherein the battery cell is in thermal contact with a fluid passing through the internal passage.