Battery Pack Connector Module With Guided Misalignment-Tolerant Coupling

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Solution Overview

Problem

Existing connector modules for battery packs face challenges in precise alignment and coupling, leading to frequent damage and connection failures due to misalignment during assembly.

Innovation Solution

The connector module incorporates a coupling guide rib that extends to guide the coupling position, a fastening part that allows movement within a predetermined range, and magnetic attraction to ensure precise alignment and secure coupling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If manual alignment of connector modules is used, then assembly simplicity is maintained, but alignment precision deteriorates leading to frequent damage

Engineering Contradiction:
Improvealignment precisionVSAvoidconnector structure complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

A coupling guide rib is introduced as an intermediary element between the connector module and the receptacle. The guide rib extends from the connector module and fits into a receiving groove on the receptacle, automatically guiding the connector to the correct position during assembly. This mechanical intermediary ensures precise alignment without requiring complex external alignment tools or procedures.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The coupling guide rib is pre-positioned on the connector module before assembly. The rib's geometry is designed in advance to match the receiving groove, so that when the connector is brought near the receptacle, the guide rib automatically engages with the groove and guides the connector into precise alignment. This preliminary positioning structure eliminates the need for manual adjustment during assembly.

Inventive Principle:
Principle #10Preliminary action

2Manufacturing precision

If rigid fixed positioning is used, then alignment precision is improved, but ease of operation deteriorates due to difficulty in insertion

Engineering Contradiction:
Improvecoupling position precisionVSAvoidinsertion ease
Core Design Contradiction:
Manufacturing precisionVSEase of operation

Solution Approach 1:

The coupling part is designed with dynamic characteristics, allowing it to move elastically in the vertical direction within a predetermined range. When the connector is inserted, the coupling part can deform to accommodate slight misalignments or variations in insertion force, then returns to its original position to maintain precise coupling. This dynamic flexibility makes insertion easier while preserving alignment precision.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The coupling part incorporates flexible elements that can deform elastically. These flexible components allow the connector to be inserted with varying forces and angles, absorbing the impact through controlled deformation. Once inserted, the flexible elements return to their original shape, ensuring the connector maintains precise positioning without requiring rigid, difficult-to-insert structures.

Inventive Principle:
Principle #30Flexible shells and thin films

3Manufacturing precision

If coupling guide rib is added, then alignment precision is improved, but device complexity increases

Engineering Contradiction:
Improvecoupling position precisionVSAvoidconnector module complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The coupling guide rib is merged with the connector module as an integrated component rather than a separate attachment. The rib is formed as part of the connector's housing or body structure, combining the functions of structural support and alignment guidance into a single unified element. This integration minimizes the increase in device complexity while maintaining the alignment precision benefits.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The coupling guide rib serves multiple functions: it provides structural support for the connector, guides the insertion direction, ensures precise alignment with the receptacle, and protects the electrical contacts during assembly. By combining multiple functions into a single element, the overall device complexity is minimized while achieving precise coupling positioning.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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 configuration enhances the durability and convenience of the connector module by preventing damage from misalignment and ensuring reliable electrical connections.

Implementation Method 1

a coupling part including a coupling guide rib, wherein the coupling guide rib extends toward the external connector module, is inserted into the receiving groove when the external connector module is connected to the connector module, and is configured to guide a coupling position of the connector module

Methodology Applied
Scientific EffectMechanical guidance:

Implementation Method 2

magnetic attraction to ensure precise alignment and secure coupling

Methodology Applied
Scientific EffectMagnetic attraction: Magnetism

Data Source

PatentUS12308563B2Connector module, battery pack comprising same, vehicle, and connector assembly
Publication Date: 2025.05.20 LG ENERGY SOLUTION LTD
  • US12308563B2 patent drawing
  • US12308563B2 patent drawing
  • US12308563B2 patent drawing

AI summary

The present disclosure discloses a connector module with improved convenience in use and durability. The connector module has at least one receptacle and a receiving groove having an inner space, is configured to be connected to an external connector module provided in an external device, and is provided in an internal device. The connector module includes at least one plug configured to be coupled to the receptacle for electrical connection with the receptacle, a coupler including a coupling guide rib, which extends toward the external connector module, inserted into the receiving groove when the external connector module is connected to the connector module, and is configured to guide a coupling position of the connector module, and a fastener coupled to the coupler such that the coupler moves in a predetermined distance range and configured such that a portion of the fastener is fixed to the internal device.