Battery Module Frame Layout for Balanced Cell Binding Forces
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Solution Overview
Problem
Conventional power storage units experience unbalanced binding forces applied to power storage devices due to the concentration of binding forces at both end portions on the side-component sides.
Innovation Solution
The power storage unit is designed with end and side components that overlap and join in different directions, inhibiting unbalanced binding forces by ensuring even distribution across the power storage devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If a coin cell battery is disassembled to access the electrolyte solution, then the electrolyte can be replaced to extend battery life, but the battery structure becomes complex and the sealing performance deteriorates
Solution Approach 1:
A removable cap acts as an intermediary component between the battery terminal and the electrolyte solution. The cap can be detached to allow electrolyte replacement while maintaining the sealed structure when attached, solving the contradiction between accessibility and sealing performance.
Solution Approach 2:
The battery structure is segmented into separable components including the cap, terminal, and body. This segmentation allows the cap to be removed for electrolyte access without compromising the integrity of the main battery structure, enabling maintenance while preserving structural simplicity.
2Duration of action of stationary object
If a coin cell battery is disassembled to access the electrolyte solution, then the electrolyte can be replaced to extend battery life, but the sealing performance deteriorates
Solution Approach 1:
The cap serves as a sealed intermediary that maintains the protective barrier between the electrolyte and external environment. When properly attached, it preserves sealing performance; when removed, it enables controlled electrolyte access for extension purposes.
Solution Approach 2:
The cap design incorporates sealing features that prevent contamination before access is needed. The pre-established sealed structure allows for safe electrolyte replacement without compromising future sealing performance when the cap is reattached.
3Ease of operation
If the positive electrode cap is made detachable to enable electrolyte access, then maintenance becomes possible, but contact resistance increases and connection reliability deteriorates
Solution Approach 1:
The cap functions as a reliable intermediary connection element that maintains electrical contact when attached. Its design ensures low contact resistance during normal operation while enabling easy removal for maintenance, resolving the contradiction between accessibility and connection reliability.
4Object-affected harmful factors
If the battery is designed as a sealed structure to protect the electrolyte, then protection performance is improved, but access to the electrolyte becomes difficult
Solution Approach 1:
The sealed structure is segmented with a removable cap portion. This segmentation maintains the sealed protection of the battery body while providing controlled access to the electrolyte through cap removal, resolving the contradiction between protection and accessibility.
Solution Approach 2:
The cap serves as a controlled intermediary access point that maintains the sealed structure during normal use but can be removed when electrolyte access is required, balancing protection performance with operational accessibility.
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 configuration effectively inhibits unbalance in the binding force applied to the power storage devices, ensuring a well-balanced and secure assembly.
Implementation Method 1
the positive electrode cap is detachable from the positive electrode terminal... when the expansion force generated by the positive electrode cap exceeds the binding force between the positive electrode cap and the positive electrode terminal
Implementation Method 2
the expansion force generated by the positive electrode cap exceeds the binding force between the positive electrode cap and the positive electrode terminal
Data Source
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AI summary
A power storage apparatus (10) includes: a first end component (301) and a second end component (302) that interpose power storage devices (100) in a first direction; and a first side component (401) and a second side component (402) that interpose the power storage devices (100) in a second direction. The first end component (301) includes a first end connector (321) connected to the first side component (401) and a second end connector (331) connected to the second side component (402). The first side component (401) includes a first side connector (421) connected to the first end connector (321). The second side component (402) includes a second side connector (432) connected to the second end connector (331). The first end connector (321) and the first side connector (421) overlap one another in the first direction, and are joined. The second end connector (331) and the second side connector (432) overlap one another in the second direction, and are joined.