Battery Pack Lower Cover Shock Prevention Design
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Solution Overview
Problem
Existing battery packs lack durability and stability, particularly in portable electronic devices where shock resistance and efficient electrical connections are crucial for reliable operation.
Innovation Solution
A battery pack design featuring a plurality of battery units arranged side by side with a protective circuit module on top and a lower cover with shock-preventing portions and lateral wall extensions, providing enhanced structural support and electrical insulation to prevent short circuits and protect against impacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If battery units are arranged closely to maximize space utilization, then the compactness and energy density improve, but the risk of short circuits between units increases and shock resistance deteriorates
Solution Approach 1:
The lower cover acts as an intermediary component between battery units, providing electrical insulation through its material properties and physical separation through its structural design. The lateral wall portions and shock preventing portions serve as mediating structures that maintain safe distances between adjacent battery units while allowing compact arrangement.
2Device complexity
If the battery pack structure is simplified to reduce manufacturing cost, then the device complexity decreases, but the shock resistance and structural stability worsen
Solution Approach 1:
The lower cover is designed as a multi-functional component that simultaneously provides structural support, electrical insulation, shock absorption, and alignment features. The lateral wall portions provide both structural integrity and electrical isolation, while the shock preventing portions at corners provide both impact protection and structural reinforcement without requiring separate dedicated components.
3Reliability
If protective measures are added to prevent short circuits and improve shock resistance, then the reliability and durability improve, but the device complexity and manufacturing cost increase
Solution Approach 1:
The patent merges multiple protective functions into the lower cover structure itself. The lateral wall portions combine electrical insulation with structural support, the shock preventing portions integrate impact protection with structural reinforcement, and the overall lower cover design unifies separation, insulation, and mechanical protection functions that could otherwise require separate components.
Data Source
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AI summary
A battery pack includes a plurality of battery units. Each battery unit includes a can, an electrode assembly accommodated in the can and including a first electrode plate, a second electrode plate, and a separator between the first and second electrode plates, and a cap plate closing the can. The battery units are arranged side by side in a first direction. A protective circuit module is placed on the battery units and electrically connected to the battery units. An upper cover is placed on the protective circuit module; and a lower cover is positioned under the battery units and opposite the upper cover. The lower cover includes shock preventing portions protruding outward at both ends thereof.