Integrated Shield Wall for Noise Suppression in Power Storage Units
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Solution Overview
Problem
In vehicles, separating circuit portions and power storage elements leads to increased weight, power transmission loss due to electrical wires, and complexity in noise shielding and heat management.
Innovation Solution
An electricity storage unit with a conductive shield wall between the circuit and power storage elements, an electrically conductive heat dissipation member, and a holding member that positions and shields the power storage element, allowing for noise reduction and simplified configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the circuit portion and power storage element are installed separately in a vehicle, then the configuration is flexible and easy to install, but electrical wires and connectors are needed which increases weight, component count, and power transmission loss
Solution Approach 1:
The patent merges the circuit portion and power storage element into a single integrated electricity storage unit. The circuit board is mounted directly within the housing that contains the capacitor, eliminating the need for separate electrical connections via wires and connectors. This consolidation reduces weight, component count, and power transmission loss while maintaining installation flexibility through the integrated design.
2Weight of stationary object
If the circuit portion and power storage element are consolidated into one unit, then weight and power transmission loss are reduced, but noise shielding becomes more complex
Solution Approach 1:
The housing serves multiple functions simultaneously: it contains the power storage element, provides structural support, and acts as a noise shield. The conductive plate integrated into the housing provides electromagnetic shielding for the circuit portion without requiring separate shielding components. This multi-functional design reduces overall complexity while achieving noise suppression.
3Object-affected harmful factors
If a shielding case covers the entire circuit portion, then noise is effectively shielded, but the configuration becomes complex and simplification is difficult
Solution Approach 1:
Instead of using a separate shielding case to cover the circuit portion, the patent extracts the shielding function and integrates it directly into the housing structure through a conductive plate. This eliminates the need for an additional shielding case component while maintaining noise shielding effectiveness. The conductive plate is strategically positioned to provide electromagnetic shielding without requiring a complete enclosing case.
4Power
If the circuit portion generates heat, then power conversion functions are performed, but the heat may affect the power storage element and reduce reliability
Solution Approach 1:
The housing is segmented into distinct functional zones: a first space for the power storage element and a second space for the circuit portion. This spatial segmentation physically separates the heat-generating circuit from the temperature-sensitive power storage element, preventing thermal interference while allowing both components to perform their functions. The conductive plate also serves as a thermal barrier between these zones.
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 shields noise from the circuit portion, reduces weight and power loss, and protects the power storage element from heat, while maintaining a compact size.
Implementation Method 1
the holding member includes an electrically conductive shield wall portion between the circuit portion and the power storage element, and the shield wall portion shields noise generated by the circuit portion
Implementation Method 2
an electrically conductive heat dissipation member that dissipates heat from the circuit portion
Data Source
AI summary
The present invention provides an electricity storage unit in which the influence of noise from a circuit portion can be suppressed, and the circuit portion and a power storage element can be consolidated. The electricity storage unit includes a circuit portion on which an electronic component is mounted, power storage elements, and a holding member that holds the power storage elements. The holding member includes an electrically conductive shield wall portion between the circuit portion and the power storage elements, and the shield wall portion shields noise generated by the circuit portion. The electricity storage unit may further have an electrically conductive heat dissipation member that dissipates heat from the circuit portion.