Arched Positioning Structure for Energy Storage Power Sets

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Solution Overview

Problem

Existing energy storage devices face reliability issues due to worn hooks and small contact areas, leading to loose engagement and potential breakage in the connection between main and backup power sets.

Innovation Solution

A positioning structure with arched surfaces on the first and second positioning components, where the second arched positioning surface complements the first arched positioning surface, restricting movement and enhancing the contact area to at least 40% of the first surface, preventing detachment and improving assembly reliability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a revolving cantilever hook is used to engage with a hook structure, then the connection between main and backup power sets is achieved, but the contact area is too small and deviates from the rotating axis, causing loose engagement and potential breakage

Engineering Contradiction:
Improveengagement reliabilityVSAvoidcontact area
Core Design Contradiction:
ReliabilityVSArea of stationary object

Solution Approach 1:

The patent employs arched positioning surfaces with complementary contours on both the first positioning component (fixed to main power set) and second positioning component (pivoted to backup power set). The curved surfaces increase the contact area from a small point contact to an extended arc contact, distributing forces along the arc length. The center of curvature of both arched surfaces is positioned at the pivot point of the second positioning component, ensuring optimal force distribution and preventing engagement loosening during rotation.

Inventive Principle:
Principle #14Spheroidality (Curvature)

2Device complexity

If traditional hooks are used for connection, then the structure is simple, but the engagement strength and reliability deteriorate after long years of use due to wear

Engineering Contradiction:
Improveconnection structure complexityVSAvoidengagement reliability
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The arched positioning surfaces replace traditional flat or point-contact hooks with extended curved surfaces. This curvature transformation increases the contact area from a small point to an extended arc, distributing wear and forces across the entire arc length. The complementary arc contours ensure continuous surface contact during engagement and rotation, significantly improving durability and engagement reliability while maintaining reasonable structural simplicity.

Inventive Principle:
Principle #14Spheroidality (Curvature)

3Reliability

If the contact area of the positioning surfaces is increased, then the engagement reliability is improved, but the manufacturing precision requirements increase

Engineering Contradiction:
Improveengagement reliabilityVSAvoidpositioning surface precision
Core Design Contradiction:
ReliabilityVSManufacturing precision

Solution Approach 1:

The arched positioning surfaces are designed with their centers of curvature positioned at the pivot point of the second positioning component. This geometric arrangement ensures that during rotation, the contact point between the two arched surfaces always lies on the arc path, maintaining optimal force distribution. The curvature design transforms complex variable contact geometry into a standardized arc-to-arc engagement, simplifying manufacturing while ensuring consistent performance.

Inventive Principle:
Principle #14Spheroidality (Curvature)

Data Source

PatentUS11258220B2Positioning structure and energy storage device
Publication Date: 2022.02.22 MERRY ELECTRONICS (SHENZHEN) CO LTD
  • US11258220B2 patent drawing
  • US11258220B2 patent drawing
  • US11258220B2 patent drawing

AI summary

A positioning structure includes a first positioning component and a second positioning component. The first positioning component includes a first arched positioning portion having a first arched positioning surface. The second positioning component is disposed at one side of the first positioning component, wherein the second positioning component includes a second arched positioning portion having a second arched positioning surface. The second positioning component is configured to rotate relative to the first positioning component, such that the second arched positioning portion is moved to one side of the first arched positioning portion. The second arched positioning surface abuts against the first arched positioning surface, such that a degree of freedom of movement of the second positioning component in a direction is restricted by the first positioning component. An energy storage device is also provided.