Battery Pack Rotational Connector Design for Secure Assembly
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Solution Overview
Problem
Existing battery pack technologies face challenges in easily connecting multiple battery blocks, which hinders efficient power distribution and storage in devices like electric tools and vehicles.
Innovation Solution
A battery pack design featuring battery blocks with connectors on both ends, a connecting unit that opposes and rotates to secure the blocks, and a relay connector that fits between them, allowing for easy rotational fixing and efficient electrical connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If battery blocks are connected using conventional locking means with operating units, then the connection is secure, but the operation becomes complex and requires multiple steps
Solution Approach 1:
The operating unit is divided into two functional parts: a pressurizing portion that applies axial force and a rotating portion that provides rotational movement. This segmentation allows each part to perform its specific function independently, simplifying the overall operation while maintaining secure connection through the combined action of both portions.
Solution Approach 2:
The pressurizing and rotating functions are merged into a single integrated operating unit that performs both actions sequentially. The user presses the operating unit axially and then rotates it, combining two operations into one unified component that achieves both initial engagement and final locking in a single interaction sequence.
2Quantity of substance
If multiple battery blocks are connected in series, then the power capacity increases, but the connection time and complexity increase
Solution Approach 1:
The connection process transitions from static assembly to dynamic operation. The operating unit combines axial pressing and rotational movements in a single dynamic action sequence, allowing multiple battery blocks to be connected rapidly without requiring separate operations for each connection point.
Solution Approach 2:
The operating unit is designed to perform preliminary engagement through axial pressing followed immediately by rotational locking in one continuous motion. This preliminary action prepares the connection interface and secures it in sequence, enabling rapid connection of multiple battery blocks without intermediate steps or tools.
3Ease of manufacture
If connectors are positioned on end surfaces of battery blocks, then the connection is simple, but the structure has poor shock resistance
Solution Approach 1:
The connector positioning is moved from the end surface (one dimension) to the peripheral surface (another dimension) of the battery block. This dimensional change allows the connector to be positioned laterally, improving shock resistance by distributing connection forces away from the vulnerable end surfaces while maintaining connection simplicity through the peripheral surface interface.
Solution Approach 2:
The operating unit exhibits asymmetric functionality with different operations required for different phases: axial pressing for initial engagement and rotational movement for final locking. This asymmetric design optimizes the connection process by applying force in the most effective direction at each stage, improving both shock resistance and connection reliability.
Data Source
AI summary
A battery pack is provided with a plurality of battery blocks each including a peripheral surface on one end of which a first connector is provided, a connecting unit which connects a plurality of battery blocks to each other such that two first connectors are opposed to each other, and a second connector which fits in the two first connectors opposed to each other. The battery block is rotationally fixed to the connecting unit.