Battery Pack Terminal Connector With Elastic Hollow Contacts
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Solution Overview
Problem
Existing battery packs face challenges in simplifying the connection structure between input/output terminals and connectors, leading to increased component count and costs, as well as reduced reliability of electrical connections, particularly in high-power applications like electric vehicles and hybrid vehicles.
Innovation Solution
A battery pack design featuring a connection structure with a first and second hollow conductive member, a central guide, and an elastic connection member, where the central guide is fitted into the first hollow conductive member, and the third hollow conductive member is fitted between the first and second members, forming an electrical connection through an elastic connection member, which includes a disk member and ring elastic pieces for enhanced contact and reduced component count.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a conventional connection structure with multiple separate components is used between input/output terminal and connector, then the connection can be established, but the number of components increases and cost increases
Solution Approach 1:
The patent combines multiple separate connection components into a single integrated elastic connection member that includes a disk member with inner and outer ring elastic pieces. This merging reduces the number of components and simplifies the connection structure while maintaining electrical connectivity between the input/output terminal and connector.
Solution Approach 2:
The elastic connection member serves multiple functions simultaneously: it provides electrical connection through conductive paths, mechanical coupling between the terminal and connector, and elastic compliance to accommodate misalignment or thermal expansion. This multi-functionality reduces the need for separate components.
2Device complexity
If a conventional connection structure with multiple separate components is used, then the connection can be established, but the cost increases
Solution Approach 1:
By merging multiple components into a single elastic connection member with integrated disk member, inner ring, and outer ring structures, the manufacturing process is simplified. This reduces assembly steps, lowers production costs, and improves ease of manufacture while maintaining connection functionality.
3Reliability
If a conventional connection structure is used, then the connection can be established, but the reliability of electrical connection decreases
Solution Approach 1:
The elastic connection member incorporates dynamic elastic elements (inner ring elastic piece and outer ring elastic piece) that can deform and recover. This dynamic capability ensures reliable electrical connection by maintaining contact pressure despite thermal expansion, vibration, or assembly misalignment, improving reliability without requiring a complex rigid structure.
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 design simplifies the connection structure, reduces the number of components and costs, and improves the reliability of electrical connections, enabling efficient charging and discharging currents in battery packs for high-power applications.
Implementation Method 1
an elastic connection member arranged in the space
Data Source
AI summary
A battery pack includes a battery cell, an input/output terminal to/from which a charging/discharging current of the battery cell is to be inputted/outputted, and a connector detachably connected to the input/output terminal, and the input/output terminal includes a first hollow conductive member protruding in a first direction and a second hollow conductive member protruding to surround an outer periphery of the first hollow conductive member, the connector includes a central guide protruding in a second direction opposite to the first direction and a third hollow conductive member protruding to surround the outer periphery of the central guide, the central guide is fitted into a hollow portion of the first hollow conductive member, and the third hollow conductive member is fitted into a space between the first and second hollow conductive members and is electrically connected to the first and second hollow conductive members by an elastic connection member.