Battery Module Handle Coupling to Prevent Separation and Noise
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Solution Overview
Problem
Battery modules with handles can separate during transportation on inclined paths due to self-weight, leading to potential falls, damage, or injury, and may cause noise from vibration gaps between the handle and cover.
Innovation Solution
A battery apparatus design featuring protruding fixing parts on the upper case with catching protrusions and coupling parts on the handle, including a seating surface, recessed surface, and limiting surface to secure the handle in place, reducing clearance and vibration noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single cover structure with a handle is used for the battery module, then ease of transportation is improved, but the handle may separate from the cover during transportation on inclined paths due to self-weight
Solution Approach 1:
The single cover structure is divided into multiple sections with multiple fixing parts distributed across the cover surface. Each fixing part independently secures a portion of the handle, distributing the mechanical load and preventing handle separation during transportation on inclined paths.
Solution Approach 2:
Different regions of the cover are equipped with fixing parts having specific local characteristics - catching protrusions at critical attachment points, seating surfaces for positional stability, and limiting surfaces to prevent excessive movement. This localized optimization ensures reliable handle attachment where most needed.
2Device complexity
If a simple coupling structure is used between the handle and cover, then device complexity is reduced, but gaps or clearances appear causing noise due to vibration
Solution Approach 1:
The coupling structure incorporates pre-designed frictional engagement between fixing parts and coupling parts, along with positioning features like catching protrusions and limiting surfaces, that eliminate gaps before vibration occurs. This preliminary mechanical engagement prevents vibration-induced noise without requiring complex active control systems.
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 design ensures the handle remains securely attached to the battery module, minimizing the risk of separation and noise during transportation, by using frictional forces and rotational restrictions to maintain the handle's position.
Implementation Method 1
each of the coupling parts can further include a fixing protrusion configured to generate frictional force with respect to a surface of the upper case and to reduce a gap between the handle and the upper case
Implementation Method 2
each of the fixing parts includes a catching protrusion that protrudes from an end portion thereof... each of the coupling parts includes a plurality of inner protrusions that protrude from an inner circumferential surface of the connection hole... to be restricted by the catching protrusion in a left-right direction
Implementation Method 3
a rotating protrusion configured to restrict the handle from rotating relative to the upper case... a cross-sectional shape of the rotating protrusion defines two or more curvatures
Data Source
AI summary
A battery apparatus includes a plurality of batteries, an upper case including fixing parts respectively protruding in left and right directions from both side surfaces thereof, each of the fixing parts having a catching protrusion protruding from an end portion thereof, and a handle including coupling parts coupled to the respective fixing parts at both ends thereof.